How to Find the Hidden Treasure in Your Logistics System

British_Museum_Alton_B_HoardIt is done. The new distribution system is in operation for a couple of weeks now. It passed the acceptance procedure and the supplier’s team has hit the road after a successful run-up. Was that all? What’s next?

Well, if you do it right, you can now start a phase in which you increase the profitability of the project far above your budget. We are talking about raising efficiency by 20 to 50%, compared to design specifications! By the way, these are not made-up numbers, but instead have been achieved in a variety of optimization projects with our customers.

A semi-automated distribution system has roughly 20 – 30 logistical parameters that you may adjust. This purposefully excludes the hundreds of technical adjustments, which are possible at the machines, even though they will indirectly influence the logistical functioning as well. This, by the way, is for an average, semi-automated installation, worth between 2 and 10 Million €. You could say this is still middle class, certainly not high-end, in terms of investment as well as in technical complexity.

And that’s not nearly all, because the logistical performance and efficiency of the distribution system is also significantly influenced by the organization of the business and the interaction with the ERP system and its associated processes.

Altogether, we are talking about a bunch of around 50 to 100 parameters that influence the profitability of your investment after the run-up of the system, and noteworthy so.

anlagenmanagementNow, how can you bring this treasure to the surface? The operating manager is already busy getting to know the new system, reducing the training deficit of his people and overcoming the typical disturbances a new facility tends to experience. The supplier’s experts have left and the maintenance mechanics are not seasoned logistics specialists.

With the experience from many successful optimization projects, we can give a crystal-clear recommendation here. What you need is an experienced logistics veteran who is deliberately not involved in the process organization. In the end, it doesn’t matter whether he or she comes from your own company, from the facility’s supplier or from a third party. A true expert with experience in logistics will leave no stone unturned when analyzing all the processes from goods-in to replenishments and order start all the way to personnel placement planning and the synchronization of functions, as well as control parameters of the installation. Particularly the analysis of error handling allows valuable insights about the process, the interfaces and the possible ways to optimize.

Such an overall optimization usually consists of a number of small adjustments and improvements. And now the good news: most of these steps require little or no additional investment. That’s because the lion share of the potential improvement can usually be realized from process or business organization.

Another finding from projects such as these is that it pays to involve the system supplier, especially when it was he who provided the material flow control or the warehouse management system as well. First, the supplier can give valuable data and detailed knowledge about the facility. Second, he will be needed when it comes to changing and adjusting parameters later. A good supplier will actively contribute to the success of this phase with his own constructive and pragmatic proposals.

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How to Model Your Goods-to-Person Picking System for Maximum Performance

4 Steps to Winning the Race of Order Fulfillment

Just like race car engines, storage and retrieval engines must be designed properly for optimum performance.

Car enthusiasts know that a vehicle’s performance is dependent on many variables. Engine horsepower, for example, is one important factor but means very little if that power does not get distributed efficiently to the wheels. Similarly, there are many storage and retrieval engines in the marketplace today, all with a wide range of potential throughput horsepower. But regardless of the potential power of your storage engine, the overall performance of a goods-to-person picking system may suffer greatly from poor design.

When deciding the power and performance you need from an automated storage & retrieval system (ASRS), you need to look at your company’s past and present data as well as your long term distribution goals.  You must consider your throughput capacity, SKU availability, and storage efficiency as well as the costs needed to implement your new ASRS system.  There are tradeoffs in choosing the amount of one versus one of the others to achieve your desired results.  To avoid pairing the wrong operation with the wrong system configuration, it is necessary to understand your operation and business fundamentals.

Selection Process

Technology is always driven by application.  The 3 critical steps for selecting the proper ASRS technology for your order fulfillment are: defining your operation; planning your picking process; and applying fulfillment partitioning.

Every operation is different, but each can be fairly well defined by considering certain information such as supply chain positioning, existing infrastructure, key data (inventory on hand, order fulfillment date and forecasted growth) and distributive analysis to name a few.

From this point, you must plan your picking process.  At the heart of order selection is getting specific inventory to its shipping container.  You must determine between discrete picking (one trip for every order line) and batch picking (one trip for every SKU).

For multiline order structures, the effectiveness of batch picking is constrained by the number of concurrent open orders.  Single line orders mixed in with multiline orders are a good opportunity for batch picking. Batch picking can be very effective to increase performance but has limiting factors such as order release times, single line order mix, trending changes in line orders and SKU touch recurrence. Sometimes a hybrid of discrete and batch picking is ideal.

The final step in the selection process is fulfillment partitioning.  For instance, products move at different velocities.   As the Pareto Principle states, usually 80% of your volume comes from 20% of your SKUs. So for optimal pick efficiency, you need to segment them accordingly.

Neue AnlageDesign factors

Total system throughput is determined by conditions that create a throttling effect on the ASRS.

Total system throughput is determined by conditions that create a throttling effect on the ASRS, such as the work rate of the operator which can be affected by ergonomics and general pick station design and  the number of open orders at the pick station that allow all machines to work unrestricted. If these factors are not properly considered, you will cause a major delay in order processing.  For example, if the sequencing of inventory to a work station has a limited number of put positions, then the inventory for subsequent orders cannot get released.  Or consider the SKU representation for a group of orders, if some aisles feeding the workstation lack inventory, then they will sit idle for a significant period of time.

The number of days of supply in your ASRS versus the reserve storage is important in determining how the inventory should flow.  Cost of storage as well as additional touches to the inventory are factors that are considered during this process.  You must determine if the goods in receiving should go to the storage reserve or into the ASRS engine.

In summary, to achieve a higher picking performance, always remember these four things:

  1. Pair the technology to your operation. There are many good technologies, but you wouldn’t go to the Baja 1000 race with a Formula 1 car.  The things that have a high impact on your operation include order profile, inventory complexity and service level.
  2. When planning your picking process, be aware of limiting factors such as order release times, order size, and SKU recurrence.
  3. Don’t limit yourself to a single technology.  Use the Pareto Principle and treat fast movers different than slow movers, as long as it is cost effective to merge them.
  4. Design with ergonomics and efficiency in mind to avoid conditions that choke the performance of your ASRS engine such as poor workstation design, limited put positions, and SKU availability.

Follow these parameters and the engine you choose to run your operation, will get your orders delivered across the finish line on time, every time.

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Why Ergonomics Makes a Difference in Warehouse Logistics

In a recent blog post about guided processes, we already talked about how important workplace design is in distribution logistics. The combination of hand, eye and common sense is still the most valuable resource in a distribution centre. Ergonomics therefore, is not a feel good factor, but instead the linchpin in designing work processes and especially workplaces.

Adherence to ergonomics verifiably improves the three dimensions that every industrial performance needs to concentrate on: cost, quality and time (or speed). Ergonomic workplaces lower costs, lead to higher quality and in most cases reduce the throughput time of stock orders. At SSI Schaefer, the result of this knowledge is merged under the brand name ergonomics@work!®.

As a matter of fact, setting up ergonomically designed workplaces is one of the investments that promise the highest ROI (Return on Investment). For instance, several applications all over the world have already proven that the ergonomically correct goods-in workplace by SSI Schaefer reduces costs by 15% on average. And this is a conservative figure, because it only accounts for increases in productivity of workers at this particular workplace.

Another example is the so-called Pick-to-Tote workplace for picking goods in a goods-to-person fashion. This thought-out and patent-protected design of processes and ergonomics is proven to enable performances of 600 to 1,000 picks per hour in continuous operation. Hundreds of these order picking workplaces are currently used in a variety of industries and demonstrate that ergonomics pays off greatly.

Let’s look at the second important objective – improving quality. In distribution logistics we define it quite simply: the customer receives the items he ordered, in the right amount, at the requested time and without damages. What might sound easy is actually an enormous task, considering that hundreds or thousands of parcels are send daily and a million or more single processes are required, which leads to an incredible amount of possible errors.

But what has ergonomics got to do with that? Good ergonomics is self-explanatory and simple. Ergonomics is certainly more than just going easy on joints and muscles. It is also about logic, easy to follow work steps and stress-free processes. In relation to a distribution centre, this means for example optimizing search and orientation tasks. Either there is just one removal position (which means there’s no need for orientation), as in a pick-to-tote workstation, or the error-prone study of picking lists is replaced by light pointers and pick-by-light displays. On top of that, a good workplace is also intelligent. It “knows” which step is possible next or which processes are not permitted at that particular moment. For instance, an order cannot be completed if the article is dropped into the wrong chute.

There are 3 principles of ergonomics@work!® that are combined here to improve the quality:

  1. removing physical loads from the employee and thus reducing errors caused by fatigue
  2. simple and clearly structured processes to reduce the number of possible errors right from the start
  3. intelligent workplaces that recognize mistakes before the process is completed

Increasing productivity in combination with quality-supporting processes will almost automatically lead to an improvement in throughput time. When more can be done with less effort, and there are less error-related disturbances at the same time, it means that orders get filled more rapidly. Shorter throughput times are not an end in itself, but rather come with important advantages. The entire warehouse is not only becoming more flexible, but also emptier. Reduced throughput times mean that each order takes less time to process in the warehouse. Every order that gets filled faster therefore reduces the number of simultaneously processed orders and lowers the overall amount of open orders. This reduces complexity in the warehouse and brings hidden performance reserves clearly within reach.

This is what makes ergonomics such a central theme at SSI Schaefer. Ergonomics not only contributes to the wellbeing and relief of the staff, but also brings measurable and distinct advances in productivity. Beyond that, the improvement in quality results in less error-related expenses and thus also leads to higher customer satisfaction, which in turn is important for tomorrow’s business. Finally, ergonomics also increase flexibility inside the warehouse, reduces complexity and speeds up order processing.

Whenever you see the ergonomics@work!® logo, you may rest assured that the experts at SSI Schaefer put a lot of brainpower into finding creative solutions to improve cost structure, quality and throughput times in your warehouse. A lot of this originated in close dialogue with our customers. Therefore, we appreciate your suggestions and ideas on ergonomics in plant and distribution.

More information on ergonomic workplace systems:
Pick-to-Tote workstation
Goods-in workstation
pick@work

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Intralogistics Trends for 2013: Surprises

SilvesterThe year 2013 promises to become an exciting one, not just for the intralogistics sector. The general connection between the global economy and intralogistics has become almost commonplace. But in 2012, interesting new developments have been clearly foreseeable.

For a long time, we just accepted the worldwide material flow as a three-legged stool: 1. Shipping raw materials from all over the world to Asia, 2. Moving simple products and components from Asia to Europe and North America and finally, 3. Partially moving these products back to Asia in the form of high-value and complex items and facilities.  

Repercussions of the crisis in the US

Due to the rising prosperity in Asia and the lessons from the crisis in North America, the intralogistics industry will soon be facing new challenges. It will, for example, become necessary to build up intralogistics facilities in countries that have previously been mostly exporting their goods. So instead of just filling containers with factory output and shipping it overseas, there will be domestic demand for these very same goods. This means, that they’ll have to be stored and distributed domestically as well.

Asia will transform itself from being just a supplier to being a full-scale trading partner in both directions. For instance, would you believe that Germany achieved a positive net export with China in the first half of 2012? (data for the entire year is not yet available)

Even the US is starting to see a paradigm shift, which will affect the intralogistics sector. Not least through the financial crisis, it became obvious how vulnerable an economy with little value added can actually be. Over the long term, such a large economy cannot survive on services and financial transactions alone. The struggle to increase domestic production and value added will also lead to changes in the flow of goods.

E-Commerce remains trendy

What we can see all over the world: E-Commerce is one of the trends, which will certainly continue and affect more and more industries. Something that has been considered impossible for a long time has now become a reality: selling groceries over the internet. Considering the notoriously slim margins of retail grocers and the pressure from discount department stores, this can only work with the most modern intralogistics behind it. Thus, the internet will continue to drive innovation in warehouse equipment.

This certainly includes the subject of same-day-delivery. After E-Commerce experienced enormous growth rates since the turn of the century, a consolidation phase will be inevitable. Already, the competition between Amazon and its various rivals is carried out at least to a certain extent on the basis of delivery times. This trend is likely going to get stronger in 2013 and require new and more sophisticated concepts in warehouse logistics.

Most interestingly though, many of the big shots in E-Commerce are still unable to draw consistent profits. The most profitable E-Commerce companies are smaller, more specialized ones. Therefore, we are certain that we’ll see strategy changes in a lot of companies in the market in the coming year.

Innovations in intralogistics

Something similar is going on at the technology and solution providers in intralogistics. Renowned companies were seen changing their owner and in some cases their strategies as well. As of today, the dominance of European companies in the world market remains unbroken, which is due to their capacity to innovate.

We are beginning to see an interesting trend here as well. Providers expand their range of products and solutions at the upper and lower end. This means, that on the one hand, we see innovations in high-tech that enable completely new applications, or make existing applications significantly more effective. On the other hand, we see smaller, simplified solutions emerging that are easy to set up and impress with their low complexity.

This much can we say already: in 2013, SSI Schaefer will again be one of the leading innovators in the industry. You will be in for a surprise…

Please allow us one final remark, concerning a very special anniversary. In 2012, SSI Schaefer has been in business for 75 years. We hope you’ll agree with us that there has rarely been a 75-year old in such great shape. We owe this success to you, our customers. For 2013, we hope you’ll give the soon-to-be 76-year old the opportunity to support you in every intralogistical task you might face.

Having said this, we are looking forward to the coming year and many exiting topics. We wish you a healthy and successful year 2013!

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Vertical Lifts – The Advantages of Compact Small Parts Storage

LagerliftPeople who see a vertical lift storage system for the first time, usually think something like: “Ah, interesting. But they must be complicated and expensive, so why shouldn’t we continue storing our goods in conventional shelves?”

But vertical lifts definitely have their place in modern warehouse technology. This is a strong hint that they have some very specific features making them valuable to warehouse operators. Let’s take a closer look at these characteristics.

Of course, there’s no point in comparing vertical lifts with every conceivable alternative, so we’ll focus on the most common and obvious one, which is storing small parts in conventional shelves.

Many companies used normal shelving systems for quite a while before switching to vertical lifts. Others among those opting for a vertical lift were unable to set up a static shelving system for lack of space. This brings us to the first and probably most noticeable aspect.

Saving space
Vertical lifts save a lot of space and therefore also energy costs, because warehouse space is expensive, especially if it’s not used efficiently. But how much of a difference does this actually make? Of course, we should be careful with generalizing these data, but under the condition, that the goods are fully suitable for vertical lifts, you can expect to save up to 90% of warehouse space. This is realistic, because this compact way of storing small parts uses the available floor space and the clearance height most efficiently.

Saving time
When you suspect your warehouse staff to spend too much time looking for and picking items from storage, a vertical lift might be the solution you are looking for. It’s important though not to confuse activity with productivity. A worker, who is walking through the warehouse, searching for an item, sure is active, but not productive.

A vertical lift uses the „goods-to-person“ principle, which is very comfortable. Compared to a conventional storage system, the worker gets the item much faster. Therefore, he or she saves time and is considerably more productive. Again, providing precise numbers is not that easy, because each warehouse is different. However, based on our experiences, it’s safe to say that a vertical lift reduces the travel times in your warehouse by 50-80%.

KommissionierungErgonomics
Your workers won’t need to bend down or climb on ladders. The service windows of modern vertical lifts are within easy reach and quite comfortable. Various other options, such as tilting the table or adjusting the height of the service window to the worker, increase the ergonomics even further. This improves the operator’s safety and is most certainly going to prevent a lot of back pain over the life span of the vertical lift. If that argument doesn’t seem valid to you, then you’re one of those lucky fellows with unbreakable backs. Consider yourself blessed!

Protection against dirt and theft
If you have been working inside a conventional warehouse for any period of time, you already know that the stored items don’t remain clean for long. There’s always a fine layer of dust settling on the shelves and the products. Depending on what you are storing, this might become a nuisance. A vertical lift is comparable to a big drawer cabinet. The amount of dust entering and contaminating the inside of the lift is significantly lower, which means that your goods stay clean much longer.

Furthermore, a vertical lift protects your goods better against theft and any other unauthorized access than placing them openly into conventional shelves. Modern vertical lifts even offer additional features to protect the staff and the stored goods. Again, whether this is relevant for your company depends on the kind of products you store.

Maintenance
The amount of maintenance necessary to keep vertical lifts running is an important factor to consider. Instead of the commonly used chain or belt drives, the SSI Schaefer vertical lift LogiMat for example, comes with a low-maintenance pinion. The use of these pinions does not lead to alterations such as elongations of chains and belts, therefore it does not require adjustments. Don’t forget to ask for this before purchasing a particular model.

Investment
The device itself requires a larger investment compared to buying normal shelves for the same amount of items. But considering the savings that accrue as a result of increased efficiency, this investment should break-even quickly. But to be on the safe side, ask a competent logistics consultant for some real numbers, so that you can make a well-informed decision.

Because, as advanced as vertical lifts might be, there are still many conventional shelving systems being installed every year. This means that both systems have advantages and disadvantages. As in many cases, it depends on the situation. What kinds of items are you going to store (value, size, risk potential …), what does the product structure look like (fast-moving vs. slow-moving items) and how much floor space do you have available. If you know this data, then you’re well on your way to choosing the right storage system.

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Are we at the beginning of the end of conventional conveyor technology?

Whether it’s in the warehouse or in the storage feed area – the future belongs to modular, autonomous agents. At least that what industry publications and research centres predict. It seems we’re witnessing the beginning of the end of conventional conveyor technology.

But what is a modular, autonomous agent? In the field of distribution logistics, this term stands for a vehicle with its own intelligent control. This distinguishes it from passively driven load units on conventional conveyor systems and also requires a control system able to handle complex and abstract tasks. So instead of “Go to x-position 657” the system could ask for complete, autonomous handling of a task such as “Remove the good from shelve 4711 and carry it to transfer location 0815”.

At this point, we have to dispel a widespread myth. Even a comparatively ‘dumb’ vehicle is able to behave like an agent. This means that the intelligence doesn’t necessarily have to sit on the vehicle physically. In the end, it’s irrelevant whether the CPU for the agent’s software is attached to the vehicle or to a central computer, which processes the commands and guides the vehicles remotely. In many cases, the common use of a central computer by several agents is a more economic and better solution.

Advantages of a modular facility design

This leads us to another important aspect: modularity, which is designing a facility using compatible modules. That’s basically what it’s all about. The vehicles’ autonomy and intelligence are nothing but technology components to archive the goal of modularity.

Why is this so important? A system comprising modular elements promises less complexity and shorter construction and implementation periods. Also, these advantages should become noticeable by improving flexibility in day-to-day operation. Something that can be assembled like Lego bricks will surely by adjustable to changed requirements without too much hassle.

The good news first: most of the time, this is true. Modularity leads to more flexibility and faster implementation of a facility. Because the individual elements are either not physically connected at all or they are using a standardized interface (like the knops on Lego bricks) and may be combined in different ways. The same holds true for the connection of modules on the control level. This not only increases flexibility, it also reduces the amount of planning necessary to adjust the individual connections between elements of the facility.

Like busses and cars

So where’s the catch? The required technology is available and largely mature. Why is there no general switch towards modular, autonomous agents for conveying and storage, or at least a combination of both systems?

Even the new, cost-effective technology does not change one fact: flexibility and modularity come with a price. And in many cases, this price is simply too high.

Just like a bus trip is cheaper per person than a car trip (as long as there are enough travel companions going in the same direction), modular conveyor technology with autonomous agents does not measure up to conventional conveyor systems in terms of cost/performance ratio. Contrariwise, when there are not enough passengers with the same destination, then cars are much cheaper than busses. Consider for example the connection from the goods-in section to the high bay warehouse. Because all goods take the same way, a conventional conveyor system will always be cheaper than a large number of autonomous vehicles.

Only when routes tend to change often or handle throughput infrequently, an autonomous vehicle might be the more economical solution. The same is true for autonomous vehicles entering the warehouse or even carrying the warehouse around (so to speak). With increasing throughput, not only will the organization of a large number of agents and the coordination among them become ever more complex, but the costs will simply take off. The higher the throughput, the more attractive are conventional designs.

But what modular, autonomous agents will never lose is the advantage of greater flexibility. In the end, you have to calculate: how much are you willing to pay for flexibility?

However, this doesn’t necessarily have to be an either-or-decision. Hybrid facility designs allow you to combine both worlds. And we still haven’t reached the end of the line with regards to modular concepts in conventional conveyor systems and storage devices. I am confident that we will see a number of interesting developments in the future.

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Intralogistics for the Future of Shopping

EinkaufswagenHow are we going to shop in the future? To generate some insights into the developments in retail, internet marketplace operator Ebay enlisted a number of experts to create a study called “The Future of Retail”. Even though the results are announced for the end of 2012, some of the theses were published in advance.

The experts brought together by Ebay agree that there will be significant changes concerning retail stores. According to them, conventional stores will almost disappear entirely, giving way to showrooms. These showrooms will allow customers to get their hands on the products and try them out, but not take them home. Instead, customers will be able to order the products they want by using QR-codes or order terminals and have them delivered directly to their homes.

Assuming that these visions would become reality, how would it affect the intralogistics of the companies involved? Here are three points that intralogistics insiders might find most relevant:

1. No more stock-keeping in retail stores

Retail stores that get turned into showrooms won’t need a conventional warehouse anymore. Producers would deliver new products to the showroom, set them up for the customers to see, and also remove phased-out models and take them back. In case a customer orders something, the product would get shipped from the producer’s distribution centre directly to the customer. The stores would then benefit from lower costs, but the producers will most likely insist on getting a larger profit margin, because they are contributing more than before.

This poses the question of how to implement this concept. In order to get their commission, showroom operators would need to prove, that the order did in fact originate from their store and make it traceable. However, the privacy of the customer must not be compromised. This is a point where more careful consideration will be necessary to make the concept work.

It is going to be interesting to see how those retailers, which now only sell over the internet, will react to this development. Are they going to continue focusing on online and try to defend their market shares with cost advantages? Or will they open their own showrooms, attempting to leave the territory they’re used to, the internet? After all, internet retailers already have the infrastructure in place, necessary to deliver directly to customers. By setting up their own showrooms, they might be able to poach in the preserve of the offline-retailer (turned showroom operator).

Scanner2. Single-piece order picking instead of pallet order picking

All the products that producers and intermediaries are sending to retail stores by the pallet or carton these days, would need to get shipped directly to the consumers’ households in the future. This requires a large change in intralogistics. Producers and intermediaries would need to retrofit their distribution centres to work efficiently in single-piece order picking.

The future laid out in the study is not going to turn into reality overnight; and certainly not everywhere at the same time. There will be a transition period of several years, in which the distribution centres will most likely adopt multi-channel distribution solutions. This would enable them to deliver to conventional retail stores as well as handling orders coming in from the newly established showrooms.

3. Further increase in returned goods

Many internet retailers are already struggling daily with truckloads full of returned items. In the future this will also include products that customers today are still returning in shops. The logistics to handle the returns will have to keep pace with that increase, so producers and retailers will have to look for more efficient methods and technologies.

However, retailers do have reason to be optimistic in this regard. Customers, who ordered from a showroom, after trying out the product and talking to salespeople, will be less likely to return the item than pure online shoppers. Nevertheless, returned items will continue to lower the retailers’ profits significantly.

Are we really going to shop this way in a couple of years or were the Ebay experts just stabbing around in the dark? One thing is for sure: the customers are going to decide which retail concepts will prevail in the future. Technological progress has no respect whatsoever for big names in the industry and customers’ loyalty is as low as never before. Companies need to be prepared to question their business model and if necessary adjust it to a changed environment.

For people working in the intralogistics of the affected companies, it is important to recognize these trends before it’s too late. Then they will be able to make the right decisions. Those however, who don’t plan for the future, won’t be able to participate in it.

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The Biggest Challenge in Logistics Projects

NotschalterWelcome to part 3 of our series on success factors, challenges and pitfalls in logistics projects. Today we are going to talk about probably the most difficult phase in a project to automate a product warehouse: handing the facility over from the supplier to the operator.

This SSI Schaefer blog post is going to explain why this phase can be troublesome and what could be done to improve the situation.

Simply said, there are usually two colliding points of view in this phase. The operator complains that “the facility is not ready and not faultless”. The supplier then accuses the operator that “the staff is not qualified and the requirements for the facility changed too shortly before the start-up phase”.

The trouble arising from changing requirements mid-way has already been addressed in part 2 of this series. Good objectives for a project come with a target corridor to provide enough flexibility. Of course, we are operating under dynamic economic circumstances. Over the 9 to 15 months the project usually takes to completion, one or more parameters might change. And, yes, for a highly dynamic goods-to-person system it makes a big difference whether we plan for 2 or 2.7 pieces in each order line. It could mean that we suddenly need 35% more performance than originally agreed upon!

In general, it’s the final stage of the project, just before the start-up, when current problems as well as unsolved ones from the past, tend to surface at the same time. And that’s the reason why you should prepare this stage with the utmost diligence and supervise it together with a qualified management team.

Often the effort necessary at this stage is underestimated and not included adequately in project planning and calculations. This is quite understandable, because higher costs in personnel and management in this phase have no directly measurable results to outweigh them. Why would a supplier at the tendering stage trip himself up by calculating more resources and thus a higher price? And why should an operator and his project team set aside more funds for this. How could they be presented to management in a verifiable cost-benefit analysis?

Neue AnlageTypical problems at the start-up stage

Maybe the following list can serve to back you up the next time you need to argue about a project. It has been compiled from the experience of hundreds of projects that differed in size and level of complexity and come from various industries. So here are typical challenges at the start-up stage of an automated distribution centre:

  • Above all, it’s the start-up phase in which the employees and their supervisors are not accustomed to working with the new facility and unable to make use of its full potential. For example, in many cases the control for resupplies hasn’t been optimized. This leads to an overflow at workstations for incomplete orders, and as a consequence keeps the performance of the entire facility down.
  • Also, understanding the interrelationships of order compilation with different order picking areas comes with a steep learning curve. Particularly when we have to deal with a combination of manual and semi- or fully-automated processes, there’s always the risk that throughputs and/or capacities are not matched. This leads to bottlenecks on one side and idling on the other.
  • No specification sheet – which has to be created and agreed upon at the beginning of a project – can really account for all sorts of additional processes. Not until the start-up phase is well underway is it possible to recognize all the exceptional situations and disturbances, for which there aren’t any defined and documented processes. Depending on the complexity of the issue, this might slow down the start-up considerably.
  • Often we have to deal with a situation in which the Warehouse Management System and the superior ERP-Software do not communicate correctly at the beginning. While it’s relatively easy to solve problems concerning protocols, it gets much more difficult when it comes to interpreting the transmitted data. Particularly in inventory management, WMS and ERP often don’t share the same opinions. From the point of view of the ERP, an item belongs to the inventory as soon as it passed the goods-in section, while the WMS wouldn’t recognize this item as inventory until it reached the storage or order picking area. This means that there’s always a small discrepancy between these two systems. It gets worse when exceptions occur, such as damaged goods or (temporarily) lost items. The WMS would usually just delete them from the files, which of course cannot be done by the ERP, because financial accounting needs to write them off properly.

This list could easily go on and on. But the special challenges of the start-up phase are already clear from the points mentioned here. So what should you do about them?

The start-up should be seen as a separate subproject, with its own working packages and qualified resources available to complete it. For example, it would be ideal to reinforce the project team temporarily with one or more experts who possess the experience necessary to handle the start-up phase of such a facility. They might be employees “borrowed” from another company site or independent outside experts.

But by far the biggest success factor is to be aware of this particular project phase and get prepared ahead of time!

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Is Intralogistics Really That Evil? Part 1: Does Automation Kill Jobs?

unemployed_peopleWe enjoy working in the intralogistics industry. Sometimes, we explain to others what kind of projects and products we’re working on day-to-day. Unfortunately, it then doesn’t take long, before we get to listen to the same statements over and over again. Actually, they are not so much statements as they are accusations. So that’s the reason we would like to discuss them in a small series.

Probably the number one accusation is that our partially and fully automated facilities would replace human workers, rendering them obsolete. So we would be at least to a certain extent responsible when people lose their jobs. But is this really the case?

This view on the world of intralogistics is of course overly simplified and doesn’t do justice to the real-world circumstances. Every company decides on its own to which degree it is going to automate processes in its warehouse. These decisions are backed by business-management considerations, which are made when the company is struggling.

In such a situation it would be a big mistake to wait for the situation to improve by itself. That would only play into the hands of the competition and jeopardize the existence of the company. Once the calculations tell them that automation would save money, they have to do something.

What is behind all the automation?

Critics might interpret this as yet another example of greedy behaviour to the detriment of others. These people see the world only as black and white, good and evil, rich and poor. But that’s not the way the world works.

Is it greedy, to offer the customers cheaper products? Is it greedy to resist the competition, when customers are going over to them? Is it greedy to ensure the survival of one’s company (which has a workforce as well)?

The truth is: if a company makes the decision to automate under the pressure of the market, it is actually saving jobs. However, not the ones inside the warehouse, because these are lost either way, but those attached to other tasks within the company.

The explanation for this is almost too simple. If a business is suffering from high costs, it has to offer its products and services at a higher price, to cover these costs. If the customers are unwilling to pay these prices, they go elsewhere and the company loses money, until it’s insolvent and gets broken up. This doesn’t just put the jobs of the warehouse staff in jeopardy, but of all employees in the company.

automatisches-lagerhausBut when a business is able to recognize the market’s signals and reduces its costs – for instance through an automatic distribution centre – it can escape this fate. So, in essence, a small number of jobs in the warehouse need to be sacrificed in order to make the other peoples’ jobs more secure. Is this fair?

Clearly, it’s not. But it would be even less fair to drag the rest of the company into insolvency, just to preserve the warehouse jobs for a little bit longer. It’s therefore rational to automate in good time. Whether this is done in a just way, is the responsibility of the managers in charge.

Planning personnel for the long term

Companies are well advised to plan their personnel requirements for the long run. This helps to cushion some of the extreme fluctuation that might arise from automating the warehouse. It is still the case though that most tasks in distribution centres are done by low-skilled workers. That’s just a result of the kind of work that needs to be done there.

But that certainly doesn’t mean that these people wouldn’t qualify for other tasks within the company. A man called Joe Girard for instance, a school drop-out without professional education, was underestimated for quite a while. But that didn’t stop him from selling more than 13,000 cars over the course of 15 years and becoming the best car salesman of all times. Maybe you’ve got someone like him among your staff without even knowing.

I daresay that many of those people employed in warehouses could upgrade their skills, if they would get notified and motivated early enough. If then comes the time when jobs in the warehouse (need to) get cut, it is possible to move people who know the company and have already proven their motivation and their commitment to its goals, to new assignments.

It is never the objective of automation, to get rid of reliable and committed employees. But automation is necessary to save the company’s future and prevent it from being displaced by the competition. If automation makes economic sense, holding it off would only move the organization in the wrong direction.

Making intralogistics providers responsible for the loss of jobs in distribution centres misses the heart of the matter completely. We, as those people working in this industry, are thus hoping for a more thorough understanding of causal economic relationships in our society, so that we don’t have to deal with such accusations anymore.

In the second part of this series, we are looking into the assertion that we would speed-up global warming.

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Returned Products in Online Retail – How much of it is avoidable?

Pakete2011 was the most successful year for online retailers up to now and the trend is clear. More people are spending a larger share of their budget on the internet. So far, so simple. But unfortunately, an increase in orders usually leads to more returns as well. This in turn leads to higher costs for the retailer and reduces his earnings, sometimes considerably.

From the perspective of companies, returns are a two-edged sword: on the one hand, it is important for customers to have the right to return products they are not happy with. This was a prerequisite in establishing distance selling as an alternative to brick-and-mortar retailers. On the other hand, dealing with returned items is costly and also more complicated then shipping them to the customer in the first place.

The reason for this is that handling returns is a task that can hardly be automated, at least not today. Incoming packages vary greatly in shape and size, need to be opened and unpacked by hand. Employees have to check the products for damages and then either discard them or feed them back into the system for reselling. Some items are as good as new; others have to be cleaned first or can only be sold as second quality.

Overall, this is a personnel-intensive process with many potential sources of error and a high need for monitoring and control. High costs are then a result of the large number of returns. In German online retail, for example, unbelievable 40% of the ordered goods get returned to the shop!

It’s only natural to assume that many of these returns would be avoidable – and indeed they are. And it’s not about complicated strategies, but rather about simple steps that most online retailers are already familiar with. Yet when we do research on the internet, we still dig up plenty of shops that don’t follow even the most basic advice.

What can online retailers do to limit the amount of returned goods?

1. The most common reason for returning items is „un-met expectations about the product“. That’s why it’s so important to describe products online or in catalogues as accurately as possible. Not surprisingly, three-dimensional views of products are becoming more and more popular. Items without any picture or with just a category image (“product image serves as example only”) don’t have much of a future in modern online retail. In case you run such a shop, make sure to use accurate pictures that show the colours as they really are. Besides, it makes sense to set up a hotline so that customers can get their product-related questions answered quickly.

2. The second-most common reason for returns is damaged goods. This could be caused by inappropriate storage, poor packaging or careless handling in the transport chain to the customer. This already provides some ideas about the starting point in reducing the number of returns. Now you only need to know where exactly the products get damaged.

Beschleunigungs-LoggerOne idea is to send a shock data logger (also called acceleration logger, see picture) through your distribution centre. It is able to tell you how strong the outside forces are, that the package has to cope with. Then you’ll find out, where the technology or the staff treat the merchandise particularly roughly. Armed with this knowledge, you’ll be able to take countermeasures.

3. The third reason for returning an item is one on which retailers have little influence at first glance: poor product quality. However, it’s the retailers that advertise the product and communicate its characteristics to the customer. If the retailer overstates the product’s features, he shouldn’t be surprised if customers are disappointed. There’s a fine line of course, and no one likes to downplay the product’s quality and thereby crush the incentive to buy. Also, retailers often get their product information directly from the producers and have little or no possibilities of verifying it all.

4. Delayed shipping and/or incomplete shipments are another reason why many online shoppers return the goods they ordered. By now, the customers are used to getting their orders delivered in 2 or 3 days, because the market leaders (Amazon etc.) have set the bar pretty high. So if you already know or expect that your deliveries are going to take longer, give the customer a heads up. He can then make up his own mind about whether he accepts the delay or goes somewhere else.

Cutting delivery times by investing in more sophisticated intralogistics solutions might or might not be a workable alternative. When in doubt, consult with experienced logistics planners, who are going to tell you, what is possible and what isn’t.

5. Aside from all the justified returns, there are unfortunately a number of people misusing this option, to the detriment of retailers and honest customers. Particularly clothes that are meant for certain occasions are devalued in this way. The customer orders a suit or a cocktail dress, wears it to an event and then returns the item the next day for a full refund.

Online retailers should therefore feel free to put these customers on a blacklist. This list simply keeps track of those customers that misuse the right to return merchandise. Businesses using such a list will usually not communicate this externally, but instead try to get rid of respective customers on the quiet. Remember the 80-20 rule: it might be that 80% (or more) of returned items come from just 20% (or less) of your customers.

Despite all these measures, there will still be returns to deal with. What a business can do to keep the costs of handling these returns low, is the subject of an article coming soon.

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3 Responses to Returned Products in Online Retail – How much of it is avoidable?

  1. Melvina says:

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  3. Lawerence says:

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Distribution: Does the future belong to multi-channel solutions?

Kommissionierung für EinzalhandelBy this time, most people interested in order picking and dispatch operations will have come across the term “multi-channel distribution”. Some suppliers are already promoting these solutions at intralogistics trade shows. If you would like to get more information on this topic and learn why multi-channel distribution isn’t a short-term trend at all, then you’ve come to the right place.

Those of you who’ve been around for more than two decades probably remember the time before the internet. Back then, people bought the vast majority of their consumer goods in local stores. Distribution channels were clear and straightforward: producers dispatched their goods to chain stores and specialized dealers, sometimes via wholesalers.

These stores only had a limited area from which they attracted customers, so that the demand of goods was quite stable. Market power was clearly on the side of the producers, wholesalers, department stores and supermarket chains. In this scenario, consumers were relatively powerless.

When the price of a product increased, they could drive to the next store or even to the next city, with considerable expenditure of time, and look for the product they wanted to buy. Direct marketing by phone, advertisement and mail order catalogues, although already established, never amounted to more than a small fraction of total consumption.

The internet as a game-changer

All of this changed when the internet took off. Consumers are now able to order virtually any non-food consumer good online. Price and quality are easier to compare online than in brick-and-mortar stores. This increases the power of the consumer and puts pressure on the profit margins. Local retailers were the first to notice it, but by now this trend has trickled down to the producers as well.

It’s interesting to see how some producers are reacting to this threat: they are selling their products directly through their website. The online prices are basically the same as in stores, but the profit margins are larger, because they are cutting out wholesalers and retailers.

Sounds like a perfect solution, but there’s a catch: the producers’ distribution centres are not designed to handle the kind of order structures prevalent in online retail. From a logistical perspective, E-Commerce and store deliveries are worlds apart.

Dispatching to stores results in a rather small number of orders, but with many (and mostly the same) articles for each order. Online shopping on the other hand leads to many orders, but most of them consist only of 1 or 2 items. If you take a look at the order picking process in the logistics centre, you’ll see where this causes problems.

For instance, in order to supply the stores of an apparel company with the items for the upcoming season, the goods could be piled on pallets by the carton and then loaded on trucks. The warehouse would have to accommodate only pallets, from which the deliveries would get picked. For E-Commerce however, this wouldn’t be efficient.

Online retailers order pick in a different way

Imagine a customer orders a jacket and a pair of pants from the fashion company over the internet. Then, someone would have to go into the pallet warehouse, find and open the right cartons, take out the individual items and pack them into a parcel for shipping. Obviously, if they would really do that, they would quickly lose track of the remaining number of items, which cartons are still complete, and so on. When returns enter the picture, it becomes even less economic.

Kommissionieren für Online-ShopperOnline retailers usually solve this problem by breaking up the pallets they receive into individual items. They then register each article into the computer, so that it can be order picked very easily. When customers return something, the product only needs to be scanned into the database and put back to a storage space. Keeping track is no problem at all, at least not for the computer.

So what can a company do, when it would like to deliver to a number of stores and at the same time sell directly over the website? It could maintain two separated warehouses, one for each distribution channel. But this would lead to higher costs and a lot of economic risk, especially when the company has no previous experience with E-Commerce.

Because it’s uncertain how the new sales channel will perform and what its share is going to be in relation to other channels, flexibility is king. A solution for multi-channel distribution is exactly what the company needs to play it safe. Such a facility is essentially a combination of several sales channels.

Of course, these multi-channel solutions are (to a certain extent) a compromise between the extremes. Engineers are looking for ways to comply with the requirements of different channels in a way that results in more than the least common denominator.

As I mentioned at the beginning, there are already systems available that were developed precisely for this purpose. No, it’s the turn of the customers of those intralogistics suppliers, to familiarise themselves with the concept. One thing can be said for sure, though: a number of companies will have little choice but to invest in a multi-channel solution. It’s therefore going to be interesting to see how engineers and logistics planners will approach this subject in the future.

Feel free to share this article or comment below!

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What to do, when even a shuttle isn’t fast enough

Schäfer Carousel SystemIn relation to storage space, shuttle systems cost at least twice as much as a small parts warehouse with a conventional ASRS. Nevertheless, shuttles are becoming more and more popular. Why is that? And why would anybody need such a high throughput and accept high costs in return?

The majority of shuttles supplies goods-to-man workplaces. When the goods travel to the man – well, to be correct it should be called goods-to-person – the efficiency of the order picking process jumps up. That’s because the operator doesn’t have to walk from one bin location to the next, or from and to the place where he assembles the orders. In conventional warehousing, these walking times typically take up between 40 % and 70 % of the entire workday.

This is something to think about very clearly: more than half of the workday in conventional warehouses is wasted on a completely unproductive activity. By the way, just because the goods are transported to a stationary order picking workplace, doesn’t mean that the process is optimal. The efficiency and the ergonomic design of the workplace also matter, a lot actually. We already talked about what this means in detail in one of our earlier blog posts.

Why it makes sense to speed up the handling of slow moving items

The goods-to-man principle is particularly profitable when handling products with low and medium rates of access. This is understandable considering that the 80-20 rule holds true in most distribution centres. A small number of fast moving items (20%) can be grouped in optimal storage positions (= less travel time), which improves performance by very simple means.

But then we could be tempted to believe that some low-budget technology should be sufficient for the remaining articles. So why invest in high-performance equipment, such as a shuttle?

Well, in most cases, medium and slow moving articles are only requested in small amounts per order. For example, a pharmacy is usually going to order Aspirin, a fast-mover, in large quantities, but rarely needs a specific drug against metabolic disorders, and only in small quantities.

As a result, each order picking for medium and slow moving items only takes a short amount of time. After all, the amount to be picked is very small. To get the order picker to work efficiently, it is important to have the next article ready without delay. A goods-to-man workstation is essentially like a vacuum cleaner, sucking in items from all over the warehouse.

It usually “sucks“ between 500 and 1000 different articles each hour. Because these articles are stored separately in storage bins (boxes or cartons), the warehouse needs to provide 500 to 1000 double cycles per hour for each workstation. If we just add up as little as 3, 4 or 5 of these workstations, we end up with an enormous thirst for performance.

This explains why, in particular, medium and slow moving items in a goods-to-man concept need a fast-operating storage device. In fact, in many cases even a shuttle system wouldn’t be fast enough.

How to compare the speed of storage and retrival machines

But how can we compare different storage devices with regard to speed? As a reader of this blog, you’re most likely familiar with the term double cycles (DC). However, in order to make a comparison of systems, we need a reference value. A single shuttle can roughly achieve 30-50 double cycles per hour. This would make it a lame duck, even compared to a standard ASRS.

The best way to compare them is to look at the number of double cycles per hour, but also per 1000 storage positions. This is an indicator that is completely independent from the design of the warehouse. Something like “performance per aisle” on the other hand cannot work in systems that don’t have aisles, but instead use lifting bars or carousels.

Compared speed of storage and retrieval machinesShuttle systems typically perform at 100 to 150 DC/h per 1000 storage positions. A conventional ASRS can only do 20 to 40 DC/h per 1000 storage positions. But the following number is much more striking: the Schaefer Carrousel System (SCS) achieves up to 250 DC/h per 1000 storage spaces. This means, it’s about 60% faster than a shuttle system!

It’s therefore no surprise that the SCS has been beating its own sales records time and again over the last couple of years. The increasing requirements coming from highly efficient and ergonomic goods-to-man workstations can hardly be met with shuttle systems, at least not without unjustifiably high costs. Even when we consider cost per storage position, the SCS doesn’t fall behind a shuttle system.

In case you need more performance than a shuttle system is capable of delivering, you should take a look at the SSI Schaefer website for more details on the Schaefer Carousel System.

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The world is flat and Pick-by-Light is expensive

Pick-by-Light seems like a really old chestnut, so why bother writing about it on the SSI Blog? Before we deal with a new, more economic approach to Pick-by-Light, let’s first take a quick look at the underlying principle.

Pick-by-Light is a generic term for a group of applications that guide order pickers to the requested items, by using lights or displays. Wherever something needs to be picked from the shelf or off the pallet, a display goes on.

But there are of course different methods and procedures to accomplish that. The most simple one is an illuminated push-button without further displays or functions. Once the item is picked, pressing the button acknowledges the pick.

This means, it is neither possible to display the amount to be picked nor is signaling shortfall quantities or incomplete picks, because there are no display options or input keys for this.

In essence, the available Pick-by-Light solutions differ with regard to whether there’s a numerical or alphanumerical display installed at every shelf space and which kind of responses are possible with additional buttons. Also, there are mixed forms, for example with a simple illuminated button at every pick position and a central display and input panel for quantities and responses.

All versions share one characteristic: they allow for paperless order picking. And this leads to all the advantages that come with paperless picking, such as:

  • Picking performance increases by 30 – 100%, because less time is needed for searching, orientation, acknowledging picks and editing the picking list
  • Significantly improved picking accuracy. There are hardly any miss-picked items and mistakes in quantities are easily reduced with those variants that feature displays at each storage position.
  • Automatic feedback to the warehouse management system in case the inventory changes or errors in the inventory occur. This controls the replenishments directly and improves the accuracy of the inventory data.
  • Easy handling with hardly any training.

Under normal circumstances, Pick-by-Light achieves cost-savings and improvements in accuracy and quality. This should make us wonder, why Pick-by-Light is not more widely used than it is right now. And it brings us to a “flat world”.

Pick-by-Light has a reputation for being high-cost. First, all the shelves and picking places need to get connected to the Pick-by-Light displays and operating devices. Then it was necessary to have the supplier set up the superordinate IT system to configure and operate the system. This requires highly skilled personnel. Therefore, Pick-by-Light systems usually start with an investment of around 100.000 Euro and are part of an even larger (and more expensive) automated solution. In smaller facilities, there was no way that Pick-by-Light could be operated efficiently.

But this is now behind us, because since then, easier and more economic ways of setting up Pick-by-Light systems have been developed. These are not replacing existing systems, but rather offer a very attractive option for smaller facilities.

Probably the most comprehensive and flexible solution for small, economic Pick-by-Light applications come from SSI Schaefer. The core of this so-called “E-Pick” is a panel PC, which is an industrial computer with integrated screen and pre-installed software.

The graphic, touchscreen-controlled software is a breeze to use and all you need to set up and operate a Pick-by-Light application from the ground up. This starts with a graphic illustration of the shelves, addressing individual Pick-by-Light displays, and finally the classification of the items. You can operate the software with the universal XML exchange file format, through direct data base access, or by supplying article lists and – depending on the configuration – order data, from a USB stick. E-Pick is thus a complete Pick-by-Light application including feedback about changes in inventory that comes as cost-effective, easy-to-use standard software.

And this makes the world round again and Pick-by-Light is an affordable yet highly productive alternative for small applications as well. You’ll find more information about E-Pick on our website.

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Walgreens: role model for integration … and efficiency

„Give a man a fish, and you feed him for a day. Teach him how to fish, and you feed him for a lifetime.“

There’s a lot of wisdom behind this old Chinese saying. And it also holds true for people with disabilities. The rest of society pities them and supports them with charity. But what they really want is a fair chance to earn their living and the respect that goes along with it.

Randy Lewis at Walgreens understood. But he didn’t just have an idea. As Senior Vice President of Supply Chain and Logistics, he also had the means to put it into action. It all started with the setup of a new distribution centre in Anderson, South Carolina.

Working in a distribution centre can be physically and mentally challenging. The employees are almost always working under pressure and there’re plenty of ways to get injured or to cause accidents. You would suppose that this couldn’t be the right working environment for handicapped people… and you would be wrong.

When Walgreens put a new distribution centre into operation in 2007, it became a declared objective to fill roughly one third of the vacancies with disabled people. First and foremost, this was an act of charity, because handicapped citizens have a hard time finding employment. The fact that this initiative developed into much more, did surprise even the deciders at Walgreens.

What results did Walgreens get from employing people with disabilities?

After just a short time, the newly established distribution centre in Anderson had become 20% more efficient than the other logistics facilities in the company. In particular, Walgreens experienced the following effects:

  • highly positive work environment
  • low fluctuation of staff
  • fewer work-related accidents
  • low absenteeism
  • positive PR, nationally and internationally

The company then concluded, that staffing the distribution centre with one third of handicapped people, significantly increases its productivity. By the way, Walgreens is the largest drugstore chain in the US and operates about 7,700 stores and 12 distribution centres. By putting this hiring policy in place, the deciders blazed a new trail and other companies might follow.

Where did Walgreens pay the most attention when setting up the new DCs?

And now, prepare for the real surprise: To a large extent, Walgreens achieved these successes through measures that – on closer inspection – every company should use in its distribution centres. Here they are:

  • setting up ergonomically correct workplaces; they prevent fatigue and therefore also mistakes and accidents
  • hiring highly motivated and ambitious employees
  • treating the staff with respect; promoting teamwork and the readiness to help others
  • training and teaching the staff comprehensively
  • putting up clear signs and safety instructions inside the facility
  • paying the same salaries for equal performance

This led me to the following assumption: Walgreens’ new distribution centres are not working more productive, because one third of the staff has disabilities. They work more productive because the workplaces and the entire work environment are created according to human requirements and people receive more assistance and attention than they do in conventional DCs. This benefits handicapped and non-handicapped workers alike.

So, if you would like to support people with disabilities, give them a fair chance to become part of the professional world. Most of them will know how to use this opportunity. And if you would like to run productive distribution centres, make sure you consider the requirements of those working there day in and day out, whether handicapped or not.

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Logistics projects – the ‘right’ objectives

ZielscheibeWelcome to part 2 of our series on success factors, challenges and pitfalls of logistics projects. Like we mentioned in the first part (logistics consultants), every project begins with a definition of its objectives.

In most cases, people start discussing performance figures such as the number of SKUs, stock turnover, throughputs, costs per pick, etc. way too early. It’s true that these numbers become relevant during the project, and some even at the beginning. But oftentimes, these logistical figures, if discussed prematurely, only obstruct your view of the real business goals.

Asking the right questions

Do you know which articles or categories are going to be your bestsellers in 3 or 5 years? How is the volume of sales going to change over the next 2 years, is it going to rise by 5%, maybe 15%, or is it even going to drop by 10%? Which services and delivery schedules are your customers going to expect from you in 4 years? How is your inventory going to look like in 3 years, the same as today or perhaps twice the size? Or will it still have the same volume, but turn over more often each year, partly or entirely? Which are your future sales channels and what is their share in overall sales going to be, and how much uncertainty comes with this projection?

Answering these questions helps you in two ways. First, you will be able to check whether your logistical performance indicators match your company’s long-term objectives and business strategy. Because the performance indicator “stock turnover”, for example, is not going to help you if the “rate of change of the inventory” is of much larger concern for you.

Second, by sticking closer to your company’s objectives, you’ll be able to recognize where target corridors come into play, and to what extent. This, by the way, does not mean that you should aim at the highest possible value for each indicator when planning a new distributions centre. This would be unaffordable and utterly unrealistic. Instead, you should make sure that the chosen solution is able to get you into the target corridor. At the same time, the necessary adjustments should be manageable and affordable, which is most likely if you incorporated them into the concept at an early stage.

Get ready for some honesty now: Flexibility comes with a price tag! A facility or a system, that has been optimised to operate at a certain level of throughput, also causes “optimal” costs. On the other hand, a system with a lot of inbuilt flexibility will cost significantly more. But, and this is another advantage of defining the objectives of the project with regard to your business, you will be able to assess accurately where you need flexibility and what you are willing to pay for it. And if you specify this in your bid invitation, you are going to receive offers for the right solution at a price you can afford.

However, a new distribution centre is not just affecting your logistical performance and your costs. We briefly talked about your customers before and are now going to treat this subject in more detail, before we approach the final area of interest, your employees.

What are your customers expecting?

3D-KonzeptThe ability to deliver is an objective closely connected to the time required for shipping. Do you still remember when mail order catalogues offered delivery within 24 or 48 hours at a surcharge? By now, fast shipping without surcharge has become a matter of course. Then again, the enormous increase of medical costs forces us to reconsider shipping to pharmacies several times a day, for example. Shortening delivery intervals is not always a one way street. At the same time, the costs for faulty deliveries increase in almost every industry. Because you not just have to handle returns and make additional deliveries, you also run the risk of losing the customer to the competition.

It is therefore important to plan the new distribution centre with the customers’ service requirements in mind. How long are customers willing to wait between placing an order and receiving the delivery? What error rates are still acceptable? Which additional services regarding documentation (i.e. tracking serial numbers in the distribution centre), customized packaging or inserts have to be provided? And above all, which developments can be expected in the coming years?

Efficient employees as an objective

Warehouse automation, alongside all the other objectives we discussed so far, usually also aims at increasing the efficiency of the staff. Or, to put it simple: fewer employees handle more deliveries than before and, ideally, with higher accuracy and additional services. But this is only possible when we define new processes and set up efficient workplaces. And this means that employees have to learn new things or even get a completely different job description.

If “costs per pick” becomes the only staff-related performance indicator, you would risk achieving this cost objective way behind schedule or not at all. The key to optimizing performance and costs of a distribution centre is process control. This, in turn, is a matter of staff qualification. It’s therefore wise to take this subject into account when the initial goals are laid out. How many employees, and with what kind of skills are necessary to operate the new facility? How much do we have to invest in training and how are we going to measure the results of this training? It does make a lot of sense by the way to track quality and productivity in conjunction. At the beginning in particular, quality should have a higher priority. First, make sure the processes run stable, and then start optimizing them. But this now leads us right to the next interesting subject, the start-up phase of a new or retrofitted automated warehouse. Because this topic is so important, we are going to cover it in a separate blog post.

A single post obviously has to focus on a few crucial aspects of a subject. In this case, these are logistics, customers and staff. Of course there are others as well, such as buildings, energy and maintenance. They however are less specific for warehouse automation.

Hopefully, this article gave you some practical ideas. We are looking forward to your suggestions and comments.

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Does Your Intralogistics Drive the Competition Crazy?

Impossible StaircaseYou might have read the book “How to Drive Your Competition Crazy” by Guy Kawasaki. As American authors prefer to use lurid titles, they manage to reach quite a large audience.

The book deals almost exclusively with a couple of non-standard marketing schemes that are supposed to make it impossible for the competition to gain the upper hand. But the way to achieve this is not by attacking your competitors head on. Instead, the author suggests that your primary objective should be to please the customers.

The idea is that a company with a loyal following of customers will make it extremely tough for the competition to lure them away. The reader might easily get the impression that Kawasaki sees the world through marketing glasses. This would explain why he considers other factors in a company’s success hardly worth mentioning.

In case the competition really ends up being driven crazy, this success – as usual – would have many fathers. I was therefore asking myself, what part the intralogistics of a company might play whenever your competitors become desperate. I would say, that in those industries where goods need to be shipped to the customer, intralogistics can make a substantial contribution. Here are 2 examples:

1. Ship incredibly fast

No matter whether you are in B2B or B2C, people will always appreciate it to get the products they ordered fast and without delay. Customers are usually impatient and would like get their purchases immediately. Normal companies would see this as a problem, but innovative ones realize, that there’s an opportunity to drive the competition crazy.

Solar A/S from Denmark is a great example for this. The company delivers technical and electrical equipment and accessories to customers in Northern Europe, and it does so with impressive speed. Orders coming in before 6 PM will be at their destination at 7 AM the next morning. When less than 24 hours pass, before the customer gets his hands on the product, this might cause the competition at least some headaches.

In pharmaceuticals, rapid deliveries are even more important. The distribution of medical products to pharmacies and clinics is not about days anymore, instead it’s a matter of hours. The Austrian pharmaceutical company Kwizda restocks pharmacies up to 6 times per day. In Linz, the company’s home town, only 45 minutes pass by between order receipt and delivery to the customer. It’s difficult to imagine anything that the competition might come up with to compete with that.

2. Ship incredibly cheap

Online retailer Amazon improved customer loyalty significantly by offering delivery at a flat rate. For a yearly fee, customers can order as much as they want without paying shipping costs. Of course, once someone orders more than 7-10 times, Amazon’s profit margins get under pressure. However, this doesn’t seem to bother them, at least not enough to stop this offer. Apparently, the company’s distribution centres are so economical that the balance remains positive. Companies with higher costs for each delivered order will find this a hard nut to crack.

This aspect is primarily relevant for B2C, and less so for B2B. But still, it does pay off greatly if your supply chain costs are low, even when you serve corporate customers. In the end, your customers have to pay for everything, all the money you spend is reflected in the price of your product. And when the costs are indeed low, the company is able to offer their products at a lower price and the competition is puzzled: “How is this even possible?”

Most businesses are unable (or unwilling) to include shipment free of charge or as a flat rate. Amazon just tries to please its customers and this strategy seems to work.

These examples are showing, how a fully functioning supply chain can add to customer loyalty. As important as marketing campaigns might be for the success of a company, it’s hardly possible to replace other departments. Investing in modern efficient intralogistics is a complex undertaking and requires a lot of planning and business acumen. But when you are trying to drive your competition crazy, this might be the trump card you were looking for.

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Logistics Projects – The Part of the Consultant

LogistikberaterIn a series of articles throughout this year, we will talk about the challenges, pitfalls and success factors of logistics projects. In the first part, we take a look at the launch of these projects and the role a consultant should play in it.

Only a few companies put a new distribution centre (or even several) in operation every single year. For most of our customers, setting up and working with a new logistics centre is an extraordinary event, for which the normal processes and structures of the company are not prepared.

Therefore, many deciders in business and logistics resort to hiring a consultant. But this leads directly to the first crucial point: what should be part of the consultant’s responsibilities and what shouldn’t? What are the objectives of the consulting firm? What might seem like a trivial question at first, is certainly worth a thought or two.

Setting your objectives

Every project starts by setting the objectives. This is a task that must not be delegated. Who else but yourself is able to specify what the new facility or centre is supposed to achieve? Go ahead and describe the objectives in your own words, with the requirements of your business in mind. In this initial step, don’t concern yourself with logistics parlance or performance figures. The translation can be done later, possibly with the support of a consultant.

But watch out! Exactly here, where the individual objectives of the project need to be translated into a profile of requirements or a request for proposal, is where the same mistake happens again and again. Instead of a neutral specifications sheet with logistical requirements, they outline a solution and a bid invitation for this particular solution. Without even realising it, you may be depriving yourself of a large potential for optimising and cost-cutting.

A useful as it is for someone without the relevant experience, to get help from outside advisors on how to phrase the specification sheet, it is dangerous to limit the range of possible solutions. Presenting prospective bidders with an almost complete facility layout and only accepting tenders that fit this layout exactly, is highly questionable.

At first sight, it might seem the most logical procedure and promise transparency and comparability. But how can you be sure that the solution outlined by your consultant is a good one, let alone the best one? To make this very clear: in the tender stage you are going to benefit the most from the competition between different concepts, not from the competition in unit costs and hourly rates.

3D ZeichnungSure, it is difficult and therefore expansive to evaluate seemingly incomparable concepts and offers from different suppliers. But if you managed to outline your actual objectives in a smart, thorough and comprehensive way at the beginning, this apparently impossible task is not that tough after all. By the way, we are going to talk about identifying the “right” objectives in a separate post in this series.

Who should be responsible?

A cardinal question in defining the structure of the project is the one about responsibility for integration. In principle, there are possibilities:

  1. The initiator of the project (You), is responsible for integrating the different suppliers and subsections
  2. A third party without physical contribution takes over this task. This could be the consultant.
  3. One of the suppliers assumes responsibility for the integration as an integration service.

Integration service providers are usually referred to as general contractors. This brings us to the heart of the matter. Responsibility for integrating the project only makes sense, if it includes entrepreneurial responsibility and the risk of financial losses. For reasons that are fully understandable, consultants are usually neither capable nor willing to take over this financial risk.

Equally important as the question of responsibility for integration, but rather underrated, is the organisation of the launch and the start of the operation. An experienced consultant can save you a lot of trouble here. In the end, almost every new distribution centre comes with changed or new processes.

This leads to numerous consequences, which people fail to consider or prepare for adequately. Employees have to fulfil new tasks or have to work on their present tasks in a different way and with new tools. Some of their new tools might not function, for example because certain processes have been documented inaccurately or not at all, and got implemented that way.

The entire team is going to experience a lot of stress from new, unfamiliar technology, the need to learn new tasks, the mistakes they make along the way and the challenge to manage the start-up of the facility. During this phase, a seasoned logistics advisor, who can guide you through this process, proposing solutions instead of assigning blame, makes all the difference. The right person for this job would be someone with personal experience in launching and operating a distribution centre. Of course, it is important that they are not trying to defend their own contributions or mistakes. This is yet another reason why the supplier of the facility, and not the consultant should be responsible for the logistical solution.

I hope that these remarks help you in setting up a logistics project, decide upon the potential role of a consultant and find the right person for this job. In a later blog post, we are going to talk in more detail about the “right” objectives of a facility project.

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The 3 R’s of Logistics: Returns, Reverse, Recycle

University of San FranciscoThe concept of logistics – moving and storing goods from acquisition to consumption – is fairly well known to businesses and their consumers. Logistics is how we make things happen, whether it’s in our businesses or in our personal lives. But what exactly does “reverse logistics” mean and why is it so important to a company’s success?

All goods typically have a final destination, but on occasion, these goods may leave that final destination and move to another point. Consumers may return the items or the item may have reached the end of its life, such as a washing machine or a computer. Reverse logistics is what happens to goods in the post distribution process; it’s the science of capturing otherwise unavailable value for a product that has been returned or has reached the end of its life. Recalls, recycling, restocking, returns, hazardous materials, seasonal inventory, damaged merchandise, salvage and more all fall under the umbrella of reverse logistics operations.

Once a product reaches its intended final destination, the consumer may decide that it is not something they want to keep; this is where reverse logistics comes into play. The foundation for reverse logistics is customer satisfaction, so companies need to communicate with their clientele and clearly identify why the consumer was dissatisfied with the product. Once these reasons are known, measures can be taken and future success is much more likely.

One of the key components of reverse logistics is to ensure that consumer returns are more user-friendly than they have been in the past. By optimizing technology through improved barcodes and return labels, consumers can more easily and quickly return their product, speeding up the entire process for all involved, and speeding up the company’s ability to resolve any unanticipated issues that appear.

Another way to minimize return rates is to simply assess and optimize the readability of any instruction manuals. A common reason why customers return goods is because the operating manual is too complicated and/or contains distracting and confusing errors. By revising and rewriting instructions so that they are accessible to customers, the number of returns for this reason will obviously decrease.

When goods are returned, it’s critical for a company to have a meaningful process for what to do with the product. Often, goods can and should be recycled. This increases sustainability, reduces costs and helps the customer. Most consumers are interested in being socially responsible when it comes to returning or disposing of their goods, so companies need to communicate their process to their consumers.

Many businesses have been able to implement successful reuse and recycling programs, and have reduced the amount of waste that feeds into their supply chain and landfills. Operating costs are lowered, and the companies have been able to recover other costs from areas like packaging procurement, raw material, waste disposal and regulatory compliance.

A commitment to reverse logistics means a commitment to increased environmental awareness and sustainability, something all companies should strive for.

This article was submitted by the University of San Francisco’s higher education program, which offers an online master certificate in supply chain management and sustainable supply chain management. For more information on the courses offered please visit http://www.usanfranonline.com.

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Happy New Year – Happy New Solutions

Topics 20122011 was the year of CeMAT, the world’s largest intralogistics trade show. And because there’s only one CeMAT every three years, the exhibits shown there are a good indicator for the innovations we can expect in the months and years ahead. This time, the large variety of new concepts and solutions for intralogistics was particularly remarkable.

They are going to bring additional dynamics into the market, because newly developed solutions and concepts usually lead to higher performance in goods distribution. A couple of years back, the focus was on the efficient picking of cartons and pallet building. What we now see is a stronger emphasis on single item order picking.

The idea behind small vehicles, such as the ones developed by Dematic and KIVA for example, is to have a flexible solution for single item picking. Our new Fulfilment Factory has the same objective. By combining a world novelty and an innovative improvement of existing overhead conveyor technology, we created a high performance solution that works irrespective of the order structure. Also, the system is easily scalable and adjustable. This means we came up with a solution that offers new opportunities for layout design and operation of distribution centres.

Like in any other market, competition in the intralogistics sector fuels innovation. The year 2012 is therefore going to bring us interesting new concepts and architectures for storage and order picking. SSI Schaefer will be presenting new developments as well, increasing efficiency, utility and flexibility.

Along with the ever growing and improving opportunities, the need for orientation and advise will rise as well. Especially larger projects, such as planning and building a distribution centre, benefit greatly from the support of a logistics consultant. To show where an external consultant can make the largest difference and what else you should know about complex logistics projects, this blog is going to feature a series about these topics in 2012.

So, in many respects, you can expect a lot from us in the year ahead. The SSI Schaefer blog team wishes you all the best for 2012.

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Ending the year with a highlight reel

SilvesterOnce again, it’s time to say good-bye to the old year and move on. But before we start 2012, let’s look back on some issues we covered in 2011.

The world we live in is full of intralogistics. With this blog, we are offering readers the opportunity, too look behind the closed doors of warehouses and distribution centres to uncover what lies hidden there. Granted, the matter may be quite complex. But we’re trying our best to shed some light on those aspects crucial to intralogistics.

Most of the time, we focus on the subject of efficiency. We use efficiency to evaluate how economic a certain solution or product works. It means that we are looking at the results in relation to the employed resources. To make this concept less abstract, we like to use specific examples in our articles.

A-Frame order picking, which can be done at about 5 cent per item picked, is a great example. Not surprisingly, this blog post was well received by our readers, because it is important to know the operating costs of intralogistics solutions. The report about 1,000 picks per hour basically takes the same line, although the topic is sometimes controversial. Obviously, several producers would like to advertise by claiming such a picking performance, but not everyone really achieves it.

When we talk about efficiency, we need to consider the particular situation of the company we’re looking at. A solution that might be a perfect fit for one company, could be completely useless for another one. We demonstrated this by presenting two entirely different warehousing solutions: chaotic storage and computer-optimised fixed location storage (locator storage system).

But there’s even more to say about efficiency, because the most efficient solution doesn’t just fall out of the sky. Instead, we have to look for it. Again and again. Those companies that mastered the process of continuous improvement will often be one decisive step ahead of the competition.

This however, is easier said than done, otherwise every company would work efficiently and any discussion about this would be futile. But this is never going to happen, which means that blog posts such as the one about 7 ways to efficient intralogistics are worth reading.

The article on the 80/20 rule also belongs in this category because it provides clues on where to look for potential improvements in a company’s intralogistics. A bit more direct, but with the same intention, we asked “How wasteful is your intralogistics?”. In both cases, it was about finding and exploiting options to increase the efficiency of a company.

New technologies will always play an important part here. They are offering opportunities to work in a more economic way. Sometimes it’s a new technology, such as the autonomous transport vehicle SSI Autocruiser, in other cases it’s an advancement, acting like a rejuvenation for existing solutions.

As you can see, intralogistics is an exciting world that never stops turning. We are therefore looking forward to 2012 and hope that you will continue to read this blog. Comments and suggestions are very welcome, of course. Just use the comment section below or send an e-mail to torsten.reichardt@ssi-schaefer.de.

A big „thank you“ to our readers and a healthy and successful year 2012 !!

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7 Ways to Efficient Intralogistics – Part 2

The first part of this blog post dealt with 3 important issues, that are going to lead you to more efficient intralogistics. Of course, this was only the beginning, so stay with me for numbers 4 to 7.

4. Ergonomics in not a luxury

In the initial purchase, ergonomically optimised solutions are more expansive than conventional ones. But in the long run, it looks completely different. Your warehouse staff might easily become the weakest link in your supply chain, if a facility is not in line with ergonomic requirements. That would create a work environment which is detrimental to human performance instead of supporting it.

The consequences of such a situation can be problematic: high personnel turnover, sickness absence, unhappy employees. In a worst case scenario, for example when accidents happen inside your facility, you will encounter even bigger troubles: you will get bad press and might even get sued.

Therefore, ergonomically optimised products and systems are not luxury items, but integral parts of modern intralogistics solutions. Technology should help human employees instead of working against them. This means, that whenever they get in contact with each other, technology has to adjust to the human, not the other way round. Go ahead and ask your intralogistics supplier about specific examples, where the systems they offer are ergonomically optimised.

5. Getting lean

Wastefulness is a delicate topic, and intralogistics is no different in this regard. Under normal circumstances, the inside of a warehouse is not accessible for outsiders. However, our experience tells us that many companies don’t take wastefulness seriously and therefore lose money. The reasons are manifold and might include poor insulation of buildings, large amounts of damaged goods, idle running conveyor technology and plenty more. In the end, it’s the customers who have to pay for that, until they find another supplier who wastes less and therefore charges less.

Thrifty intralogistics makes a strong contribution to the competitiveness of your company. It can even be said that thriftiness is a prerequisite for efficiency. It basically means that you are allocating your resources in an economic way. But the path to lean warehouse or distribution centre can be quite rocky. I’d therefore advise you to hire experienced consultants that are able to help you along the way. Some companies have developed a high degree of expertise in topics such as “lean production” and are supporting other companies in getting there as well.

6. Only the scalable solution will last

Predictions about the future development of an enterprise always come with uncertainty. The farther you would like to look into the future, the more vague your prediction will be. Sometimes, future growth is not anticipated, because the planners are afraid of designing an oversized facility that ends up working well below its capacity.

But there’s a big difference between oversized and scalable. Oversized means that the facility is designed to handle a much higher throughput, and therefore does not work efficiently. By scalable, we mean that the system can be expanded without a lot of hassle, in case a higher throughput is needed.

Scalable intralogistics solutions put you on the safe side and allow you to adjust them according to the business development. The ideal system rises to the challenge, so to speak. What does that mean at the moment of purchase? It pays off to ask beforehand, if the system can be expanded and what this is going to cost you. Some suppliers are even able to guarantee the availability of their products for several years, which definitely comes in handy.

7. Look at your intralogistics as a whole

Inside an ideal intralogistics system, all the parts work together like in a Swiss clock-work. The capacity of different components is perfectly matched. Humans and technology cooperate without friction losses. A warehouse management system controls and manages all the processes and ensures the efficient interaction of all parts. In short, your facility is a well-oiled machine.

Sounds too good to be true? Well, yes, but in this case it might be more real than you think. Large intralogistics providers are capable of installing a complete turnkey system. This has advantages for both parties: the customer gets a turnkey system, where all the parts interact seamlessly. He doesn’t have to look for other suppliers to purchase missing components and he has only one point of contact. In return, the producer gets a larger contract. Experience shows that it does indeed make sense to look at the intralogistics of a company as a whole and search for a complete turnkey solution.

Are you already en route to having efficient intralogistics or did I mention a point where you’ve still got unused potential. I was hoping, this small list would help some people on how to inquire about important aspects of intralogistics solutions. So maybe next time you deal with a potential supplier, you will be able to check their offer more thoroughly than before.

Can you think of an 8. way to efficient intralogistics? If so, write a comment!

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7 Ways to Efficient Intralogistics – Part 1

What might keep a company from investing in efficient intralogistics solutions to gain an advantage over the competition? I think that there are often a lot of doubts about the right course of action. From an outsider’s point of view, the intralogistics industry can be confusing in many ways. There are plenty of different systems, processes and technologies available on the market. Some of them are complementary, others are mutually exclusive. This leads to uncertainty and hampers further actions, sometimes as far as consolidating the status quo.

This happens although the objective is already clear: efficient intralogistics. It means achieving your goals with the most economic use of your resources. But which ways are going to lead you there?

To provide some means of orientation here, I listed 7 ways to efficient intralogistics. These points are basically a suggestion, to think critically about your company’s intralogistics. They will be most useful to those, who don’t deal with this topic on a daily basis, yet can’t ignore it completely.

When this subject is outside your “home turf”, you might fail to consider something essential when searching for intralogistics products or services. It might then lead to serious disadvantages later on, when the purchase has already been made. Of course, you should always get expert advice, but even then, your are certainly better off when you’re able to participate in the conversation. Maybe this blog post will allow you to avoid a costly mistake. If not, it only took a few minutes of your time.

1. Keep your systems up-to-date

Let’s assume you just invested into your intralogistics. What do you think: how long can you lean back now and watch, until your newly purchased equipment becomes outdated? The answer: the moment the producer hands you the keys is the moment a process of deterioration starts. Technological progress is unstoppable.

Although this progress is of a positive nature, it might render your shiny new facility technologically obsolete in a couple of years, if you don’t update it. Suddenly then, you have to think about buying new equipment again, at high costs.

But there is another way. It pays off to stay in touch with the intralogistics provider and look into new components, the latest software updates, and so on. In many cases, regular and timely updates, the right training for your crew, and some new components increase the life expectancy of the entire facility. This will lead to regular, yet lower costs in total, compared to purchasing new stuff after many years without modernisation.

Are you concerned about striking long-term service and maintenance deals with your supplier? Don’t worry! Browse the market and you’ll find companies ready to maintain not just their own installations, but third party systems as well, and in a professional way. You have plenty of alternatives.

2. Always do the math

Every company in a market economy has to earn money. Those who don’t, will disappear from the market. Granted, there’s nothing surprising about this fact, but it still gets ignored quite often. When you consider purchasing intralogistics products and services, don’t forget about the balance sheet. Ask your supplier about the operational costs of his systems and how long it takes them to break even. Look at different scenarios, not just best-case, but also worst-case and the most likely development.

The longer it takes for a system to break even, the larger the margin of error in your predictions. So if the business doesn’t grow as planned, the facility is constantly operating below capacity. This pushes the break-even still further into the future and your money is tied up in an oversized facility.

It is definitely a good sign when a prospective intralogistics supplier inquires thoroughly about your business model and individual processes, before pitching an offer. It indicates that they are not going to deliver some run-off-the-mill system, but something customised according to your particular needs. This makes it more likely to reach the break-even as predicted.

3. Reliability is the key

Intralogistics solutions need to be reliable. Your facility can only earn money during up-time. So any down-time in your operation will usually reduce your earnings.

This aspect is most relevant when it comes to systems with a high degree of automation, but also concerns the cooperation between humans and technology. People are a potential source of error, which makes it the task of technology to support them. Under ideal circumstances, even semi-automated system will provide the reliability you need, but at lower costs.

Of course, this point would be complete without mentioning modern technologies. Suppliers are keen to sell their most recent developments, even if these systems haven’t proven themselves yet. This might be risky for the customer. It doesn’t mean though, that you should refrain from purchasing new products and solutions, because technological progress can only happen if people are willing to adopt it. New technologies sometimes have teething troubles, but they shouldn’t be too difficult to deal with. The real problems start when an intralogistics company turns your shiny new distribution centre into a test site for half-baked products. It is therefore absolutely justified to ask for references, which means comparable installations that are already working reliably.

Points 4 – 7 are the subject of part 2 of this blog post.

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Intralogistics Step by Step: From the Initial Contact to the Presentation of a Concept

3D DesignLet’s assume you’d like to upgrade your intralogistics, or even buy something completely new. I suppose you would start like this: you do some research in industry magazines and online, maybe visit a trade fair for intralogistics. Eventually, you are going to contact one or several intralogistics suppliers. And then, what happens next?

By writing this article, I would like to shed some light on this procedure. To do so, I divided the process into its single steps. With this information you will hopefully be able to see whether your potential business partner is working diligently or just trying to sell you some run-off-the-mill concept.

Consulting

A thoroughly handled intralogistics project requires extensive consulting. At this point, the supplier should not try to pitch a certain product or system to the potential customer. Instead it’s all about understanding the current situation of the client and his intralogistics needs.

Some customers are surprised how many details a supplier would like to know about the business processes. However, this is no reason to worry, quite the contrary. For the intralogistics company, being familiar with the customer’s business model is a prerequisite for developing a suitable solution.

You, as a potential business partner, should therefore prepare yourself for these meetings. The more data you have on your current intralogistics, and the more clearly you articulate your goals, the easier it gets.

How much space is available? How quickly are the goods moving through your warehouse? Are there seasonal peaks in your business? How much storage capacities do you have now and how much would you like to have? How much budget is there? What about other restrictions?

These are just some of the questions you might encounter. And don’t worry, there’s no reason to be embarrassed when you don’t have a lot of data, or when your data shows, that you didn’t work efficiently up to now. Experienced intralogistics suppliers have seen it all. No matter how inefficient your are right now, it’s not going to dumfound your consultant.

What counts is that you communicate as clearly as possible, what kind of improvements you expect. This enables the supplier to come up with a concept that truly matches your situation and your requirements. Which brings us to the next step in the process.

First concept

This is where the really creative work of the intralogistics company starts: the planning. Based on the data collected during the meeting with the customer, the supplier now develops a first concept. It means, that the planners come up with several alternative solutions and then evaluate them to find the most efficient one for the particular customer.

Business-MeetingThis step is much more complex than it seems at first. There are numerous aspects to consider when transferring the available data into a sustainable concept. In the end, the new system should not just match the current situation, but also offer options for a future expansion.

And even though it is merely the first concept, it should be conclusive and based on the previously gathered information. On the other hand, a certain level of flexibility is still helpful in this stage. It wouldn’t be wise to set anything in stone that would significantly narrow the options for further adjustments of the concept.

Look at this as an application. The intralogistics company uses this concept to apply to do business with you. Then why would you settle for some run-off-the-mill solution?

And please don’t fall for companies that only offer 100% automatic solutions. These suppliers will hardly be able to offer unbiased and objective advice. As you know: when the only tool is a hammer, every problem looks like a nail.

Presentation of the concept

When the first concept is finished and revised, it’s time for the long-awaited presentation. It usually takes place in front of your decision-making body. It’s purpose is to illustrate the optimal solution and the expected improvements, based on your current problem.

From the point of view of the supplier, this presentation is a possibility to find out what the customer thinks about these propositions and ideas. It wouldn’t make sense to start developing all the details of the project until the customer is happy with the basics. For you, the presentation is the right place and time to ask questions.

When does the system reach its break-even in different scenarios? Which follow-up costs do we need to consider? Is the system scalable, environmentally friendly, economic, ergonomic, etc.? Feel free to ask uncomfortable questions as well: How long does it take for the service team to get here, when the system suddenly breaks down on a Friday afternoon before the Christmas holidays?

It is smart to think about these questions beforehand. Once the supplier makes its presentation -  hopefully a very professional one – these questions might drift into the background. But that’s not where they belong.

And then, what’s next? After the presentation it’s up to you to decide. You need to make up your mind about whether you are going to do business with this supplier and start working out the details together, or rather look for a solution elsewhere. In any case, good luck!

What are your experiences with this process? Share them in a comment!

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Locator Storage System, Part 3: Are German car dealerships storing air?

Lagerung von KarosserieteilenIn parts 1 and 2 of this blog post, I wrote about the setup of a locator storage system (LSS) and explained, what kind of advantages businesses can expect from this type of warehouse organisation. But what kind of cumulated effect would the LSS have on the economy as a whole?

Choosing the right kind of warehouse organisation, meaning the most efficient one, is not just crucial for each single business, but also for the entire economy. I daresay that Germany would be way more efficient and also a whole lot greener, if more companies would store their goods in a LSS. But let’s do the math.

Among car dealers in Germany, there are roughly 14,000 authorised ones, that also offer repair services. Then there are about 11,000 service partners and spare parts shops. Combined, their numbers add up to 25,000 businesses with an average spare parts storage of 500 m². This means they cover an area of 12.5 million m² in total. As the average dealership could cut its warehouse in half using LSS, we would save 6.25 million m² in Germany. This area equals approximately 870 football fields.

The amount of waste we see here is surprisingly high, considering that we use this much area to store basically air. But there’s more. Because one square metre of warehouse comes at about 1,000 Euros, we can estimate that a solid 6,25 billion Euros have gone into warehouse construction unnecessarily.

From a macroeconomic perspective, this ties up a serious amount of capital, which is not available anymore for other, more urgent investments. That is another reason why the LSS would have long-term positive effects, which would not be limited to individual businesses, but benefit the entire economy.

Oversized warehouses do not only cost more in construction, but also in operation. In a conservative estimate, we can calculate possible energy savings of 1 Euro per square metre and month. This is the money we have to pay for basic HVAC and would total about 75 million Euro. An average business could save 3,000 Euro each month, which doesn’t sound like a lot, but does matter, since we are talking about small enterprises here. Including other expenditures into the calculation, for example cleaning and surveillance, would make a warehouse compression even more profitable.

Warenausgabe im AutohausIt is not just increasing your balance, it will also reduce your CO2 footprint, which helps to portray the business as environmentally friendly. If you would try instead to achieve this level of savings by other means (wall insulation, triple-glazed windows, etc.) you would soon realize the enormous potential of LSS warehouse organisation.

It works for new constructions as well as for already existing warehouses. In both cases, you stand to gain something. When setting up a new warehouse, you may purchase a smaller construction site when you are going to organise the warehouse as a LSS. In an existing warehouse, the LSS frees up space and allows you to add more goods to your storage. You might, for example, want to store special tools or offer wheel and tyre storage to your customers. Winter tyres are now mandatory in Germany, so there will be a number of car owners who would appreciate such a service.

HGV repair shops are no different in this regard. For example, there was the case of a service station, that was designed to include a parts storage of 1,600 m³. When applying the LSS principles during the planning phase, the warehouse was downsized to just 800 m³. With the current prices for land and construction in mind, this amounts to savings of several 100,000 Euros.

The 7 leading producers of HGVs maintain around 800 service centres in Germany. This does not account for unauthorised repair shops, whose numbers also reach several hundreds. Every one of these small businesses needs a warehouse with thousands of spare parts in stock. When looking at these numbers, it becomes obvious that the potential reductions in costs are quite large, and what amount of capital is tied up in these buildings.

I hope that these examples showed that taking a closer look at LSS would not only benefit the individual businesses. It would also be a step forward for the entire economy and reduce our impact on the environment.

Did you already work with a LSS? Do you think I am exaggerating or are these calculations accurate? Let us know in the comments!

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Locator Storage System, Part 2: Requirements and Advantages

Einlagerung ins Locatoren-LagerIn the first part of this blog post, I wrote about setting up a storage facility that follows the locator storage principles. This second part is going to be about the requirements that make this type of warehouse organisation particularly lucrative and which advantages materialise in practise.

Which are the requirements of a Locator Storage System?

Or, in a different wording: Under which circumstances do the advantages of a locator storage system (LSS) have the greatest impact? Experience tells us that the LSS should be taken into consideration whenever a larger number of stockkeeping units need to be organised and the items differ greatly in shape, size, weight, etc. This is usually the case with spare parts in the automobile industry. The warehouse should comprise at least 1,000 stockkeeping units, otherwise a different form of storage would most likely be a smarter choice.

This also includes, that those units remain in the selection long enough to justify the time and work that needs to be put into data collection and classification. The example of a repair shop makes sense again: when a car producer rolls out a new model, the repair shops can be certain that spare parts for it will remain the same for years to come.

Furthermore, the range of articles should consist mainly of medium and slow-moving items. Warehouses storing basically fast-moving items will usually do better with other kinds of warehousing systems. This does of course require some data about the turnover of each article.

As mentioned in a previous post, the probability of mix-ups in chaotic storage is small, because similar items don’t get stored directly next to each other. This however, does happen quite frequently in a LSS. To make up for this fact, the warehouse staff needs to be more familiar with the stored goods. Small personnel turnover is therefore very helpful, which in turn is easier to achieve with little or no seasonal peaks in distribution.

The requirements mentioned throughout this blog post usually pose no challenge for companies such as car dealerships, repair shops and the like. Therefore, it’s basically these types of businesses that benefit the most from organising a warehouse as a LSS. And the advantages are indeed surprisingly large, considering that the system is based upon the well-established fixed location storage principle.

Kommissionieren im AutohausWhat are the advantages of a LSS?

The most significant difference compared to standard fixed location storage is the reduced need for space. A cutback to 50% is by no means exceptional, which also lowers operating costs correspondingly (HVAC, cleaning, etc.). In addition, the time needed to store and order pick items goes down by 50-70%. This means you could assign more important tasks to your staff. Certainly, that’s a big plus in times of high labour costs.

Because the computer keeps track of all the storage operations, there are fewer potential sources of error and your book inventory balance will be more accurate than ever before. This will simplify the actual stocktaking, the more so as it can be integrated into the staff’s daily routine.

You might have the idea in your mind that a smaller warehouse would perform worse and sooner or later become an obstacle to further growth of the business. But you would be surprised to learn that the opposite is actually true. Reducing the size of the warehouse leads to higher efficiency und thus facilitates the expansion of the company. In essence, the storage doesn’t really become smaller, it just gets compressed.

In case the LSS reaches it limits eventually, it can be expanded just like a standard fixed location warehouse, with more storage space and better technologies (handheld barcode scanner, Pick-by-Voice). So, the LSS is not a closed system, instead it grows along with the company’s requirements.

A LSS therefore offers a range of advantages, which might give a decisive competitive edge to smaller businesses such as car dealerships and repair shops. Would you like to know how the LSS protects our natural resources and benefits the economy as a whole? That is the topic of part 3.

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Locator Storage System, Part 1: How does a computer-optimised fixed location warehouse work?

Organisation eines TeilelagersA while back, I wrote a blog post about chaotic storage at online retailer Amazon.com. The advantages of this kind of warehouse organisation from Amazon’s point of view were clearly visible. But this is not supposed to mean that other types of storage had no right to exist. I would therefore like to present a completely different kind of storage with this three-part blog post: the Locator Storage System (LSS).

A warehouse that follows the locator storage principles is at heart a precisely optimised fixed location warehouse. What makes it different from a standard fixed location warehouse is the exact planning of the storage positions. In this process, it is of prime importance to record the article data comprehensively.
A LSS is an interesting alternative for companies that need to store larger numbers of spare parts. First and foremost, this includes dealerships and repair shops for cars, lorries and busses, but also businesses in the bicycle and motorcycle industry. Those are the firms where a LSS will usually make quite a difference.

How to organise a LSS?

Previously, many companies stored their items according to order numbers or name. The problem with this kind of system is that the storage takes up too much space and time, because the differences in sizes and turnover rates were hardly taken into account. The LSS is therefore the most logical improvement.

Each article’s characteristics, basically size, weight, value, current inventory, turnover, sensitivity and potential hazards (hazardous goods) need to be recorded into the system. Additionally, every storage position has to be labelled in such a way that humans and machines are able to read it, i.e. with code digits and barcodes. This is a prerequisite in order to assign the right storage location to each article.

This is a task for a special computer software. It calculates the ideal warehouse organisation based on the recorded data. Each stockkeeping unit gets its own storage location, which is registered by the computer. And the computer remains indispensible as the operation progresses, because it keeps track of the inventory and the storage locations. Each storage and order picking operation therefore needs to be done with the computer.

Kommissionieren im TeilelagerThe warehouse is organised around the idea that items with similar characteristics should be stored together. This might lead to situations in which otherwise unrelated items, such as screws, o-rings and hose clamps share the same drawer (but not the same insert box). This increases the storage density and uses the available space more efficiently. Another feature of this kind of storage is that items are placed according to turnover. The more often a certain article is required, the closer it should be to goods issue. Those items, for which demand is highest, are then located within a radius of just 5 m.

Then again, these storage locations are not set in stone. The system is flexible enough to adjust to changes in the range of articles or in turnover. In a real life application, it is common to form families of parts. As an example, all light bulbs would then be put together, irrespective of size or turnover. That wouldn’t be necessary, but it improves the convenience and understanding of the warehouse staff.

Would you like to know why the LSS is a particularly interesting option for car dealerships and repair shops and what exactly the advantages of this type of storage are? Then go ahead and read part 2 of this blog post!

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AutoCruiser – an entirely new category of conveyor technology

Until recently, internal transportation of small parts, cartons and boxes was neatly divided into 3 segments. At the lower end of the throughput scale were forklifts; medium throughputs were the realm of automated guided vehicles (AGV) and belt conveyors were used for high throughputs. This troika of conveyor technology has now seen 2 new approaches, each working from a different angle.

First, there are shuttle systems, which are normally working inside a racking system. They are now able to navigate outside the racking. In essence, these are not conveyors but small storage and retrieval devices, which are also able to cover the distance between racking and workstation or production site.

The second approach is the one presented by SSI Schaefer at CeMAT 2011: the AutoCruiser. It is a transport device closing the gap between forklifts / AGVs on one side and conventional conveyor technology on the other side. Internal transportation by forklift or AGV reaches an economic and technological ceiling at roughly 50-100 tours per hour. Conveyor technology on the other hand remains efficient until 1,500 to 6,000 transports per hour, depending on the transfer elements used to build the conveying system. But because of the considerable investment required to set up such a system, it needs to operate above the threshold of 400 to 600 units per hour to break-even. Simply put, it does not make a difference whether the system works at 500 or 1,500 units per hour – the costs remain the same. That’s why conventional conveyor belts are often inefficient when working at low throughputs.

Here is where the AutoCruiser enters the picture. It combines features from both AGVs and conventional conveyors. Just like belt conveyors, it operates on tracks – but these tracks are not driven, don’t need a power supply and are not controlled through a PLC or a material flow computer. The AutoCruiser tracks are more like a railway system, but without the power cable – the AutoCruiser doesn’t need it. The vehicles on these tracks have their own drive mechanism and power supply (a battery).

This basic design leads to several highly desirable features of the AutoCruiser:

  • The tracks are very economical. One metre of tracks comes at less than 90 Euro, including the stilts (every 2.5 m).
  • Because the vehicles are track-bound, they are less complex than AGVs or shuttles. Thus they are more robust and reliable and also highly affordable.
  • The throughput of an AutoCruiser system can be adjusted according to the requirements. By adding or removing vehicles, throughput increases or  decreases.

Of course, the AutoCruiser system has limits as well. Based on the transfer elements, such as switches and swivel plates, one AutoCruiser line can reach a throughput of 250 – 600 transports per hour.

The initial investment and start-up costs of the AutoCruiser are quite low, which enables the system to break-even at just 30 to 50 transports per hour. Or, to put it in a different way, the AutoCruiser remains efficient even when the initial throughput increases by the factor 10. Scalability of these proportions, both technically and economically, cannot be found in any other conveyor technology.

But how does the AutoCruiser manage to find its destination without PLC or material flow computer? Every vehicle has a small pouch to insert destination cards. Whenever a vehicle receives a new load, it also gets a destination card, for example for “storage“ or “dispatch”. The information on the card is given as normal letters as well as barcode, making it readable for machines. At every junction of the track, e.g. a switch, a barcode scanner reads the card. The switch control “knows” about the track layout, because it has a table of information behind it. The switch will then direct the vehicle towards its destination. This is comparable to road signs at a crossing: go left to “Exampletown” or continue straight ahead to “Testcity”.

But doesn’t the programming of the switch require a centralised control or computer? No, it does not. Again, the AutoCruiser system provides a surprisingly simple solution. A special “teach card“ is used to put the switch (or swivel plate, etc.) into programming mode. This card looks like a normal destination card. However, it does not have a destination on it, but instead it puts the switch control into programming mode through a special barcode. Then, the barcode scanner at the switch has to read all the destination cards which require the switch to act. The programming mode is then closed with yet another special card and that’s it.

A typical AutoCruiser system consists of about 10 to 30 of these switches and other transfer elements. Because they are easy to install and program, the set-up of an AutoCruiser system is fast and inexpensive. And this still holds true in case there’s the need to change or expand the system at a later stage. Re-programming the switches is a piece of cake.

If you would like to learn more about this unique yet surprisingly simple system for internal transport, please click here to read on.

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Guided Processes in Distribution Logistics – best practice or patronising?

“Creative employees are the key to success” this management credo is almost general knowledge. Then why is it hardly reflected in distribution logistics and its workplaces? It is indeed rarely the case that workplaces and processes inside a warehouse are designed by the employees themselves.

It’s much more common that workplace and process design are subject to a high degree of guidance. We therefore talk about “guided processes”. But what does this mean in the area of distribution logistics?

With regard to workplaces in a warehouse or distribution centre, “guided process“ means:

  • all processes are defined, which means that it is precisely stated how a certain job (goods-in, replenishments, order picking) needs to be done
  • the infrastructure surrounding the process is also defined, which means that the entire periphery (scanner, feeler, software…) is standardised down to the smallest detail and perfectly suited to the defined processes
  • the processes are monitored and controlled

According to this definition, a goods-in workstation would need to have very specific features. The sequence of steps in the workflow; “identify shipment”, “open package”, “verify and count product” and “forward the product to the conveyor system” would be exactly defined.

A good workstation supports this workflow with ergonomically correct features, such as an optimally placed scanner, illuminated pointers for orientation or a lifting table for heavy loads to relieve the employee. Control software, perfectly adjusted to the workplace, monitors the correct execution of each process and automates routine tasks. Additionally, the data gathered from this software allows a continuous improvement of processes and workplace design.

Order picking is another area, in which workplaces built on guided processes offer significant advantages. For instance, it could be designed in a way that makes picking the wrong item virtually impossible, because there’s never more than one item available at the pick station. The hand-over to the correct order is supervised as well and illuminated pointers or pick-by-light displays guide the employee. Because he or she does not lose time searching for items to pick or hand-over, this not only leads to an increase in accuracy but in throughput as well.

Does this mean that employees working in order picking are unnecessarily restricted and patronised? Outsiders might indeed get this impression, because there’s little room left for creative self-fulfilment of the individual. But this was never part of the objectives of distribution logistics.

Good distribution logistics focuses on the essential and applies simple, understandable and standardised processes. This is supposed to reduce the sources of errors to a minimum. Guided processes meet this requirement. Simplified, structured processes help avoiding errors and thus increase order picking accuracy. Guided processes relieve the employee and usually contribute to an increase in throughput. This in turn leads to lower costs and greater profitability.

A good workplace is therefore a perfect reflection of the underlying processes, adjusted to the people and the products. Consequently, design and optimisation of workplaces is now of similar importance as technologies for storage and conveying. In this context, guides processes are best practice.

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How wasteful is your intralogistics?

VerschwendungFirst of all, what exactly is wastefulness? While I was doing some online research on LEAN Philosophy, I came across two interesting definitions of “wastefulness“.

“Anything that does not contribute directly to the process of adding value is wasteful.”

“Expenditures that customers would refuse to pay for, if they knew about them, are wasteful.”

The wasteful use of resources is a problem in every industry. In intralogistics however, it is particularly troublesome, because we are continuously searching for more efficient solutions. And efficiency can only be achieved once wastefulness comes to a halt.

Unfortunately our everyday life reeks of wastefulness so much that we came to terms with it and started to ignore it like white noise. We seem to accept that 35% of all perishable foodstuffs are thrown away due to inadequate cooling, that at least 30% of all caught sea creatures die as unwanted by-catch, or that 25% of the distance covered by lorries is done without freight.

But in my opinion, that’s not the way to do it. It does not help at all to get accustomed to the current level of wastefulness. It does not make it disappear. And as soon as we accept a certain amount of prodigality, we establish a precedence and more and more of it comes creeping in. Intralogistics is no different in this regard.

It should be our goal to fight back against the wasteful use of resources and look for more efficient solutions. In order to do so, wastefulness first has to be identified as such.

This brings us to the first definition of wastefulness. Anything that doesn’t add value directly, is wasteful. Transports, internal as well as external, are the prime suspects here. Because transports that don’t increase the product’s value or bring it closer to the customer, are wasteful.

This may sound hard but it’s actually logical and reasonable. You have to organise the internal flow of materials in a way so that no good is moved around more often than necessary. There sure are plenty of distribution centres around the world that don’t measure up to this ideal.

The second definition of wastefulness also leads to useful insights. What if your distribution centre was equipped with a number of webcams so that the public would be able to observe the entire facility. Would that make you feel uncomfortable? Think about what you would need to change before you could allow customers to take a look.

Examples for wastefulness in intralogistics are abundant: unnecessary movements of goods, oversized conveyor technology, laborious order picking processes, damaged goods, unused space, underemployed staff, insufficient insulation, and so on.

These examples might seem obvious, but deriving appropriate counter measures is anything but. That’s because squandering is a tenacious opponent and hard to subdue. It could be that the internal structures are too rigid, or that the people involved are blinded by routine, or the processes in question are too complex. In many situations it might therefore be a good idea to get some outside help.

Fortunately there are companies providing advice to others about getting leaner and more efficient. This includes a number of concepts and measures known collectively as LEAN Philosophy. And one central aspect of this philosophy is discovering and ending wasteful processes. For this purpose, all existing processes could be divided into four categories:

Core processes – these are the ones that add value for the customer
Auxiliary processes – anything that is required to execute the core processes
Blind processes – those processes cause expenditures but no additional value
Waste processes – any process that destroys value previously created

Subsequently, processes that fall into the last two categories should then be abolished if possible. The first two categories will get explored for potential improvements. This is a way to curtail the inefficient use of resources.

Dealing with wastefulness may lead to surprising and sometimes unpleasant insights. Unpleasant, because we need to question the status quo to allow for changes. This can cause quite a lot of resistance in some companies. But if your goal is to operate your intralogistics efficiently, there are no shortcuts. Because fighting wastefulness requires you to get to the root of the problem.

What where your experiences with LEAN Philosophy? In your opinion, which part of intralogistics wastes the most?

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One Response to How wasteful is your intralogistics?

  1. Dean says:

    Getting to a lean supply chain will take some considerable effort up and down the chain. There is always ways to find more efficient ways to save energy, recycle materials, save water, etc. It seems it needs to be a company policy and carried out department by department. I think a good initiative would be to have the company dept heads to be required to reduce at least 10% of inefficiencies quarterly. The same mechanisms should be in place that parallel budget reductions but for waste.

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The hidden returns of a WMS implementation

RechenmaschineYes, it’s true. Most software projects finish behind schedule and above the budget. Experience shows that these delays originate at the connection between user and provider. It starts with a different “language” and ends with unfinished homework.

Nevertheless, in most cases even the alleged project disasters turn out to be a success in retrospect. That’s basically because of the hidden returns, which arise from every WMS (Warehouse Management System) implementation project.

The first and foremost, a WMS is used to manage orders and inventory, mostly in combination with a (semi-) automated distribution centre. The problems which occur during the implementation are already the first hidden returns of a WMS project, as paradoxical as this might seem.

The representation of processes in a software – and that’s basically what a WMS is all about – relentlessly uncovers all shortcomings in the existing workflow. Every small uncertainty, missing specification and contradictory procedure makes the software stumble. These shortcomings then suddenly become apparent for the first time. Manual processes, which means humans, are great in dealing with unexpected and unprecedented events. Therefore, it seems that the shiny new WMS is “not working” at the beginning. As a result, WMS projects lead to major light bulb moments and considerable process improvements. These improvements are part of the potential that couldn’t have been realised without the WMS project.

Warehouse Management SystemBut there’s another area in which the implementation of a WMS also accomplishes more than commonly known. In order for a WMS to work properly, all the processes need to be clear and all the data has to be available. And that’s exactly where most WMS users derive large additional benefits. The data compiled by the WMS allows more accurate analysis and insights concerning the business, with regard to the stored goods as well as the procedures and thus the expenses.

For the user, this means that a WMS project yields additional profits in two stages, which were not part of the contract specifications and will not show up on any invoice. The first stage is the process improvement in the immediate implementation phase of the WMS. The second stage is a long-term effect flowing from the analysis of the “treasure” of data in the WMS database. This is an area which many WMS users – in my opinion – don’t exploit thoroughly enough.

So what are the conclusions here? In the preliminary stage of a WMS project, I strongly recommend a critical and systematic analysis of all the processes in the distribution centre. Particular attention should be turned to special cases (“what happens if…?”). To reap long-term benefits from the new WMS, the purchase should come along with a multiyear agreement about continuous joint data analysis and further process improvements. You will see quite soon that this might be the buying decision with the highest ROI of all.

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Biomimicry in Intralogistics

Blattschneiderameisen“Biomimicry is based on 4 billion years of evolution and therefore superior to human inventions.” Simply put, this is the opinion of those in favour of biomimicry solutions.

So what is actually behind this buzz word, to which several research institutions dedicated themselves and that also gets mentioned in relation to logistics solutions? Biomimicry is the application of solutions and principles from nature in technology. Products that use the lotus effect are probably the most popular example. This effect protects the surfaces of these products and is modelled after the lotus plant. Lotus leaves have a water-repellent surface that makes water roll off, together with dust and dirt. Scientists analysed this feature and copied it in their labs.

But biomimicry has been around for much longer. The well-known hook-and-loop fastener is also copied from nature – from a group of plants called burdock. In 1951, the Swiss engineer Georges de Mestral had this idea patented.

What does this have to do with intralogistics? Well, distribution centres for example are full of complex and mostly parallel processes. For the outside observer, this sometimes resembles an ant colony. And that is where biomimicry copied the concept of swarm intelligence – from the organisational structure of ants. A single ant has a very limited range of behaviour. But when working as a self-organising cooperation, the ant colony as a whole is able to act surprisingly goal-oriented.

When transferred into the realm of intralogistics, this concepts means that the multitude of orders and tasks within a distribution centre is carried out by several autonomous, machines working in parallel. Just like the individuals in a swarm, these machines would communicate with one another and work on tasks together. The difference to a conventional warehouse management system would be that the machines fulfil their tasks without central supervision, similar to an ant colony or a termite mound. At present, this concept still requires quite a lot of research, but preliminary results seem promising.

KrakeAnother approach tries to copy certain capabilities from humans and other advanced animals. The human hand in particular is almost indispensable in many areas of logistics. Biomimicry has lead to robot grippers mimicking the features of a human hand. Then again, there are robots, whose gripping mechanism is based on the suction cups of krakens. And several computer algorithms for machine vision are also derived from nature.

Does that mean that the distribution centre of the future will be populated by autonomous robots with “natural” vision and grippers?

Possibly.

But we certainly shouldn’t underestimate the achievements of classic engineering. Let me give you an example, with a comparison again taken from nature.

When ranking different species of terrestrial animals with regard to the efficiency of their locomotion, humans only make the upper midrange. At the bottom of the list, with a poor relation between applied energy and covered distance, we would find snakes, for example. Kangaroos are at the top of the list – their leaping makes them very efficient at high speeds. They are followed by animals commonly known for their running abilities, such as horses and wolves, which are also quite economic. And somewhere in between, there’s homo sapiens. But once a human sits on a bicycle, he becomes by far the most energy-efficient of all. And even after 4 billion years of evolution, nature has not provided us with a bicycle or anything similar.

Biomimicry will surely contribute valuable impulses for the development of intralogistics. Nevertheless engineers won’t stop looking for inspiration in other areas as well.

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To the 50th Anniversary of the Euro-Pallet

EuropaletteWhen a product remains unaltered for 50 years, it’s either ready to get displayed in a museum or it stood the test of time with flying colours.

The Euro-pallet belongs to the second category, no doubt. Its success story started 50 years ago, in 1961. Back then, the International Union of Railways (UIC) agreed on a contract about a standardised and swappable wooden pallet. This was the starting signal for a logistical revolution.

But not just the logistics sector, indeed the entire European economy owes a lot to the Euro-pallet. How would today’s logistics look like without the Euro-pallet? A world without standardised pallets is about as unthinkable as a world without ship containers. Over the last 50 years, the Euro-pallet left an indelible mark on Europe’s goods transportation and even enabled the flow of certain commodities, that are now so common that we take them for granted.

In order to honour this anniversary, I researched a couple of interesting facts about the Euro-pallet.

In many cases, it’s the rather plain things, that manage to prevail unchanged in these fast moving times. This definitely holds true for the Euro-pallet, which could hardly be more simple. Nevertheless (or because of that) it is a masterpiece of industrial design.

It is made of 11 wooden boards and 9 blocks, held together by 78 (or 81) special nails. It is standardised to a size of 1200x800x144 mm and weighs between 20 and 24 kg. Ants are able to carry 100 times their own weight? Well, the Euro-pallet does the same! It can load up to 2,000 kg, when the load is applied equally.

The dimensions have been chosen with the purpose of allowing the Euro-pallet to move through normal doorways. Of course, it also fits perfectly on HGVs and railroad cars. From the beginning to the end of the shipping, the goods may remain on the pallet and don’t have to be reloaded in between. Among other advantages, this reduced the time required for the loading of a railroad car by 90%.

Pallets may be traded and swapped. An exact definition separates those pallets, which are still „swappable“ from those which aren’t. This way, damaged pallets are withdrawn from circulation and either repaired in a licensed repair facility or discarded.

Every year 70 million new pallets from legal production join the pool. They are always made of dry, vermin-free pinewood and are manufactured strictly according to the standard. Thousands of unannounced control visits each year are needed to supervise the producers’ compliance with that standard.

Nevertheless, counterfeit pallets are a growing nuisance. Because real pallets are a quality product, some criminals specialised in the production of counterfeit Euro-pallets. These fake pallets mimic real Euro-pallets closely, but are of inferior quality, which will become apparent sooner or later. Using counterfeit pallets comes with several risks, such as damaged goods or work related accidents. Needless to say, counterfeit pallets are not swappable.

The number of Euro-pallets in circulation can only be estimated: somewhere in the range of 350 to 500 million. Precise date is not available, because the life-expectancy of Euro-pallets depends on several factors, and when they are worn down, they leave the cycle without getting registered.

The rise of the Euro-pallet changed logistics forever. Many other products align themselves with the dimensions of the Euro-pallet, such as forklifts, jack lifts and pallet conveyor systems, which are used to move pallets inside a warehouse. This also includes racking systems, whose dimensions also match those of the pallet.

But there’s more. The market also offers palleting and depalleting robots, which pile products on Euro-pallets or remove them. There are also plastic boxes available featuring Euro dimensions, which means they can be stacked on Euro-pallets without wasting any space. This way, the transport and storage of goods becomes even more efficient.

Is it possible to improve a brilliant construction such as the Euro-pallet even further? For extreme loads, pallets made from steel are available, but a higher costs. Plastic pallets on the other hand cannot handle that much weight, but last longer under difficult environmental conditions (humidity, changes in temperature), compared to the standard model made from wood. Under normal circumstances though, the wooden pallet has to fear no real competition.

Although there’s some occasional bad press regarding the Euro-pallet, it is a winning design and even has potential for further growth. Outside of Europe, some companies are interested in using the plain-looking Euro-pallet as well and might help to carry on this logistical revolution. Maybe even around the entire world.

What else is left to say about the Euro-pallet? Write a comment and let us know!

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1,000 Picks per hour – What you need to know!

Kommissionier-ArbeitsplatzWhether you’re visiting CeMAT in Hanover or doing online research on order picking systems, there’s a certain buzzword following you around: “1,000 picks per hour”. But not every system claiming to deliver 1,000 picks per hour is really able to do so in the real world.

It starts with a fairly simple question: How many items are actually handled during these 1,000 picks per hour?” Or to phrase it with some logistics parlance: at how many goods per order line does the system achieve 1,000 picks per hour? There’s a clear distinction between picking 5 identical items and picking 5 orders with a different item each.

A pick is commonly defined as the order picking process required to fulfil one order line. So if a customer orders 2 pairs of socks and a wristband, we have two order lines – one order line with two items and another one with just one item. By definition, that should equal two picks. But some providers switch to a different definition and arrive at three picks, as if every single item would count as a pick.

But the order structure also influences the achievable performance in another way. 1,000 picks per hour can only be done at goods-to-man workstations. This means, that the items to be picked are conveyed automatically to the workstation and then presented in an ergonomic way.

In a sense, this is quite simple: for every order, the requested items have to make their way to the order picking workstation. Or more precisely, the load carriers of the current order and of the desired articles, respectively, meet in perfect synchrony right at the workstation. But you need to keep an eye on the surrounding conditions, under which 1,000 picks per hour are supposed to be achieved.

It is very important to know, if the orders at the picking station are drawing from a pool of 100, 1,000 or 10,000 different articles. The larger the range of products, the more complicated the coordination between storage and retrieval device, feed area and picking workplace. Furthermore, the requirements for the workstation’s periphery will increase as well.

In addition to the right components, this also calls for a deep understanding of the underlying control software of such a system. In the range of 700 picks and more per hour, only very few suppliers are able to provide what it takes. At least, as far as distribution centres with real world order structures are concerned, and not just some optimised environment inside a research facility.

But when you’re trying to achieve 1,000 picks per hour, make sure you don’t forget ergonomics. This means way more than just anatomically designed workstations with inclined surfaces and rounded down edges. It covers the entire order picking process, including eyes and brain. But discussing this would go well beyond the scope of this blog post. I will therefore talk at length about ergonomic picking workstations in a later post.

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The 5 Cent Secret

A-FrameOrder picking at 5 cents per order line, and fully automatic – how does that work?

The workhorse of pharmaceutical distribution and at the same time a real underdog in warehouse automation, that’s the A-Frame picking system. But how come an entire industry cannot do without the A-Frame, but it’s virtually unknown in other distributing industries?

For years, the A-Frame had a reputation as special equipment for the distribution of pharmaceuticals only. That’s indeed were its strengths become most obvious. A single A-Frame unit picking 50,000 products an hour at just 5 cents per order line can handle 10-20% of the entire distribution of a pharmaceutical logistics centre. No other technology comes even close to that performance.

How does an A-Frame picking system work?

At first glance, the system resembles a cigarette vending machine, because the products are stored in longish chutes. However, the A-Frame has chutes of roughly 1.5 to 2 m. A dispenser is located at the bottom of each chute. This mechanism pushes the lowermost article onto a conveyor belt.

This happens at an incredible speed of up to four articles per second. The chutes are positioned on each side of the conveyor belt, leaning backwards over the belt. Seen from the front, these skewed chutes and the conveyor belt below form a giant A. That’s what gave the A-Frame its name.

The control system divides the conveyor belt into logical sections, one section for each shipping order. This is also known as windowing. The sections of the conveyor are like moving windows. All the products belonging to one order are then dropped into the same window, which means the same section of the belt.

At the end of an A-Frame system, there are small clusters of products on the conveyor belt. Each cluster represents a shipping order. This is usually followed by some form of automated packaging.

Why are the costs per order line so low?

First, the entire A-Frame consists of just a few and very uncomplicated components. To Put it simple, the system is basically a set of sheet metal pieces with a dispenser at the bottom. It also requires a conveyor belt and a control system coordinating the shipping order, the windows on the belt and the dispensers. Beyond that, this order picking system only needs the occasional refilling of the chutes. Because this hardly takes any time and only has to be done once or twice a day, the operational costs of the A-Frame drop to just 5 cents per order line.

The benefits of an A-Frame, namely the extremely high throughput at minimal costs, are starting to become realised outside pharmaceutical distribution as well. And that’s why the chutes are not always filled with drugs anymore, but with office equipment, digital media or cosmetics, for example.

Maybe this small blog post gives you ideas about other industries which would benefit from the A-Frame.

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What does the 80-20 rule tell us about intralogistics?

80-20-RegelThe 80-20 rule, also known as the Pareto principle, was discovered by Italian economist Vilfredo Pareto at the beginning of the 20th century. He observed that most causal relationships in economics – and in fact in life – follow a highly unequal distribution.

He was first looking at the division of wealth in the Italian society and realised that the richest 20% of the population owned roughly 80% of all the assets. Since then, the 80-20 rule has caught on and found useful application in other areas of life.

When looking at other causal relationships in life, we could presume that 20% of the criminals commit 80% of the crimes; 80% of the deaths stem from 20% of the causes, 20% of the movies are responsible for 80% of the movie industry revenue, and so on. Upon checking the actual data, you will be surprised how close these guesses actually are.

It doesn’t matter, if the numbers are not always exactly 80 and 20 percent, what matters is that we draw the right conclusions from this unequal distribution. For instance, knowing that 80% of the business comes from just 20% of the customers, we should analyse those customers and try to attract more of their kind, while neglecting those that only give us 20% of the business.

What does this mean for your intralogistics? Does the 80-20 rule tell us anything useful about warehousing, storage operations and order picking?

Here are a couple of suggestions. Feel free to check them out by gathering some data or ignore them at your own risk.

“80% of the downtime is associated with 20% of the possible causes.” Find out where and why this downtime occurs and address the underlying issues. You’ll save time and money by ignoring the other 80% of the causes.

“80% of the maintenance and service costs are for just 20% of your equipment.” Why is some of your equipment more prone to damage and wear than the rest? Try to locate the reasons and you might stumble upon potential savings.

“80% of all errors in order picking are attributable to 20% of the reasons.” By taking a closer look at these incorrect orders, you’ll very likely be able to draw conclusion about the causes. If so, go after the most serious causes first. This could make your distribution centre more accurate without turning your entire organisation upside down.

“20% of your warehouse equipment is responsible for 80% of the wasted energy.” Looking for ways to make your intralogistics a little greener? Then how about identifying the 20% of energy wasters that make the rest of the facility look bad by spoiling the overall energy balance.

“20% of the processes lead to 80% of damaged goods.” Maybe there are a few occasions in which your products are not touched gently enough or where storage conditions are not appropriate and therefore deteriorate your goods. If so, stop ignoring it and tackle the problem instead.

“20% of your stored goods amount to 80% of the total value.” Its quite normal that stored products differ greatly in value. If you find this to be the case in your warehouse, it might be worth looking at the most expansive ones in greater detail. Are the most valuable items stored appropriately? Are they secured against damage, theft and deterioration?

Granted, sometimes it might not be that easy to obtain the proper data to verify these assumptions, but in most cases it’s worth a try. The potential savings seem very promising indeed. It’s hard to imagine a more efficient way of problem-solving than starting with those causes that contribute the most to each problem at hand.

What’s your opinion? Is the 80-20 rule relevant in intralogistics or did I fall for a confirmation bias? Comment below!

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Amazon – leading the way through chaos

BüroklammernHow can something be random on purpose? Well, Amazon, the world’s largest online retailer, stores its goods in a chaotic disorder. But only at first glance, because there’s order behind the apparent disarray. It’s called chaotic storage.

How does chaotic storage work?

A warehouse for chaotic storage – sometimes also known as random storage – is basically a shelving system holding the products. So far, it doesn’t differ from a warehouse with fix storage positions. What makes a chaotic storage system so special is the flow of material.

This starts at the goods-in section: the warehouse staff takes incoming goods to the shelving system, where they are placed in unoccupied shelf positions. Each shelf space has a unique barcode and every product as well. The staff uses handheld scanners to record the shelf space and the corresponding product, thus telling the computer, where the goods are located.

When an incoming order requires these goods to be picked, the computer compiles a picking list. It then sends order pickers to exactly those shelf spaces where the requested products can be found, according to the database. In order to keep this database current, each article that is removed from the shelf needs to be scanned again.

By the way, chaotic storage does not imply automatic storage. Although it is possible to operate a chaotic storage system automatically, it is not always the best alternative. Amazon for instance, still needs quite a lot of manpower, because a simulation of the storage processes showed that hiring warehouse staff was more economical than automation.

What are the advantages of chaotic storage?

Chaotic warehouses are much more flexible than conventional ones and can respond to changes in the product range much easier. This reduces the amount of planning, because neither the range of products as a whole nor the sales volume of particular goods need to be known or planned in advance.

In addition, chaotic storage allows to use the available storage space more efficiently, because freed-up space may be refilled immediately. In a storage system with fixed positions on the other hand, some shelf space is always reserved for certain articles, even if their actual stocks are considerably lower.

Chaotic storage is a time saver, not just when stocking up on goods but also during order picking. Incoming goods are simply placed in free spaces on the shelves. The computer will then create picking lists with optimised routes whenever someone orders products. This way, the distance the warehouse staff needs to cover is shortened. Furthermore, picking lists at Amazon are not sorted by order, which means that the picked products have to be combined to shipments in an additional step.

The amount of training required by new employees is also remarkably lower when using chaotic storage. It is not necessary for them to memorise the entire warehouse layout or even single storage locations. This will allow you to replace staff more easily or hire seasonal workers during peak times.

What are the requirements for chaotic storage?

Intuitively, most people would store similar goods together, virtually sorting them according to predefined characteristics. This would place all books in one section of the warehouse and all toys in another section.

But that’s not necessary in a chaotic storage system. The products only need to share the most basic requirements with regard to storage (i.e. temperature, humidity). Further characteristics don’t have to be considered. In a chaotic warehouse, all kinds of different articles may lie directly next to each other, such as books, toys, sport equipment, electronics, DVDs, jewellery and digital cameras.

Exceptions are made for fast-moving articles, because it wouldn’t be worth storing them, and those items which are too heavy or bulky for normal storage operations. Articles like these have to be stored separately. Perishable goods are also not suitable for chaotic storage.

Needless to say, all the goods have to be barcoded and entered into the database. The same holds true for all possible storage spaces. The computer also needs a kind of map of the entire warehouse, enabling it to compute optimised picking routes.

Chaotic storage is dependant on a reliable warehouse management system. If the computer would freeze or lose data, warehouse operations would need to be suspended until the problem is solved.

This type of storage is particularly interesting for distribution centres handling a large number of items with small stocks each. This usually is the case in the online retail business.

Also, orders with articles from different categories are a common occurrence there, so storing them according to categories would not yield any advantages. Quite the contrary: the staff at Amazon takes care not to place articles from the same category directly adjacent to each other. This improves order picking accuracy because mix-ups are much less likely.

The term “chaotic storage” is by the way only justified from a human point of view, but is not at all correct from the standpoint of a computer. For a warehouse management software, a chaotic storage system is nothing more than a sequence of calculations and database operations.

Do you think that Amazon is a good example for a chaotic storage system or do you know a better one?

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13 Responses to Amazon – leading the way through chaos

  1. Jon says:

    That is fascinating. It is so much more intuitive to sort the items and group like items together, but from a computerized system standpoint it doesn’t make any sense. It is a quantum leap in logic going from the mechanical age to the information age. Wonder what other applications there are for this type of quantum logic update? Great story.

  2. Dave Dargo says:

    Back in the early ’80s I worked for a grocery store chain that utilized this type of storage, though we didn’t call it chaotic storage – we just called it more efficient and cheaper. Ours was fully automated.

    This was done for our frozen food distribution center where work rules dictated that workers would work 15 minutes “on” and 15 minutes “off” because of the temperatures. Essentially, we needed double the work-force because they only worked half the time picking orders to fulfill store inventory.

    Our system used robotic forklifts. When new product arrived the system would direct the forklifts to stick the pallet in an empty slot. The forklifts would move pallets to a picking line in older-first order where devices would “pick” the correct number of units for a particular store’s replenishment order. These units would move down conveyer’s until they exited the colder storage area into a room where humans would stack the differently sized products onto a pallet destined for a specific store.

    The system would assemble the orders from all the stores, sort them and then instruct the mechanical pickers to do their picking in just the right order so that a single store’s order would all arrive in a single stream to a single human stacker and there would be about ten stackers lined up at the end of ten conveyers.

    It was fascinating to watch. One would enter the distribution center and watch the autonomous forklifts moving new pallets to empty slots, moving the oldest pallets to the pickers and a concert of picking arms all firing at just the right time to make a single store’s order request line up and arrive at the stacker’s station. I remember that, at the time, the forklifts had never operated in such a cold environment and that just added to the risk we took when implementing the system.

    We didn’t know enough at the time, or at least I didn’t, that this was called a chaotic storage system. We just thought it was pretty neat to conceptualize and implement.

    I was just a programmer at the time and don’t know how much of the concept we borrowed or bought from others but that distribution center was something wondrous to behold.

    Given the types of items I often order from Amazon I can understand their use of human pickers and I was happy to be able to read how they fulfill my orders. Thanks for the great article.

    • Thanks for sharing your thoughts on chaotic storage. I can tell from your writing that you know more about warehouse logistics than you give yourself credit for and I really appreciate that you read our blog.
      BTW not everybody calls this type of storage “chaotic”. Some also refer to it as “dynamic storage” because “chaotic” has a negative meaning for many people. Maybe that’s why your company called it “more efficient and cheaper”.

  3. Dave says:

    A general-purpose computer filesystem stores data in just this way. I know you were looking for real-world examples, but the similarity interested me.

  4. Years ago I learned that some libraries were storing books based on their size, not Dewey Decimal or Library of Congress classification number. Lots of cubic inches are wasted with Dewey or LCCN because tall books are placed next to short books and the shelf space has to accommodate all sizes. There is no need to have 14 inches available for books that are just 7 or 9 inches tall. The libraries use their own catalog numbers that point to a particular shelf and there is a D-D cross reference so readers can search by D-D number.

  5. Biff says:

    Sounds like my kid’s bedrooms, everything all over the bloody place…..

  6. Jakester2k says:

    Actually there’s a very good example of this kind of chaotic storage all around us. It’s called the hard drive. When data (shipment) comes in, it’s assigned an address (barcodes), put on the drive (load in) and kept track of in the filesystem (management software). When specific data (product) is needed, the filesystem knows where the it is on the drive and gets it. A nice bonus is that the data remains there after it’s gotten (neverending supply?). Or it can be deleted, clearing the space for other data. Up to the capacity of the drive (warehouse), data can be added, retrieved and deleted without real regard for size or content – if need be, the data can even be broken up and fit into empty spaces, because the filesystem always knows the location of every part of the data.

  7. PeterY says:

    Very interesting. It seems as though Amazon is treating their warehouses like a hard disk. Random access. And since a database can locate and search for any item then the grouping of items etc is virtual and dynamic. Obvious in retrospect.

  8. Tony Toews says:

    General Electric Medical Systems had just such an randomly stored but automated warehouse in the mid 1980s in Milwaukee, Wisconsin. They shipped parts for Xray and other similar devices around the world. (Including CT or MIRI scanners or whatever was available back then.) The items were stored in boxes on pallets totally randomized on the shelves. The pallets where just high enough to store the open topped boxes and of many heights depending on the size of the part. Rubber o-rings didn’t need a lot of vertical space.. the automated forklifts went and brought back the pallets with the boxes and the order was assembled and shipped. I do recall the staff doing the picking did a lot of waiting around but then I only had a tour. The manager showing us around asked how long one light had been burnt out down the one “alley way” The operator replied a few months.

  9. Julian says:

    9gag has released some pictures of how this chaotic storage actually looks like, pretty awesome.

    via 9gag.

  10. Jon Perry says:

    Life is chaotic. In this case Amazon adapts to chaos rather than becoming overwhelmed by it. It is simple, yet genius. It takes all structure of industrial engineering and twists it into an elementary computer rather than human issue.

    Amazon has to many products. Logically, I can see how this saves money. I could only imagine the labor costs of a structured system.

    Great article! I really enjoyed it.

  11. Chelsea says:

    Sounds a lot like how Argos works. Their items are taken directly from delivery cages and put onto a shelf. The person then inputs into the voice system they use where they’ve put it, so the computer knows where it is. When it’s ordered, a picking ticket is generated, then the picker simply goes to the aisle, location and shelf shown and gets it. I don’t know if they deliberately try not to place similar items together like Amazon seem to, but there are, for example, rarely two sets of different Lego on the same shelf, so usually if a ticket is generated with a description of “Lego”, it’ll be the right one. The catalogue numbers still have to be checked, but yeah.

  12. George Ives says:

    As someone who normally refers to this kind of warehouse operation as ‘dynamic storage’ I enjoy Schaefer’s use of ‘chaotic’. I have been to Amazon’s warehouse in Swansea (UK) and I think chaotic is an understatement. Although it must be said that using the right storage solution ensures that it is ‘organised chaos’ and most importantly, efficient.

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What were the hottest topics at CeMAT 2011?

CeMAT-Trends 2011In the first week of May 2011, intralogistics professionals from all over the world gathered in Hanover, Germany, where the most important intralogistics trade show is hosted every three years. At this trade show, the current industry trends become more clearly visible than anywhere else.

The run-up to the trade show already offered some clues about dominant topics. As usual, the exhibitors tried hard to gain some attention from the press by announcing spectacular innovations.

So here is what I consider to be the top 3 subjects at CeMAT 2011:

Green logistics

The trade show ran under the official tagline „Sustainability in Intralogistics“. This topic has already been in the spotlight so many times that some experts got tired of talking about it. Most likely though, the developments in the area of green logistics have only just begun to materialise and we can expect to see much more in the years ahead.

At CeMAT 2011, there were a couple of products and solutions on display with the promise of being profitable and environmentally friendly at the same time. In the end, every new development in green logistics has to live up to this double challenge.

When it comes to saving energy, internal transport in particular has plenty of room for improvement. But thanks to the newest forklift control systems, we can expect to see some real progress soon. Forklifts will be moving around on optimised routes, avoiding unnecessary detours and saving energy.

In addition, forklifts with hybrid engines are now available, a technology largely borrowed from automotive engineering. But forklift transportation isn’t the only beneficiary of green technologies. Over time, storage and conveying systems by and large will switch to more energy-efficient solutions.

Robotics and driverless transport systems

Unlike green logistics, which is basically an evolutionary development of existing technology, robotics is a technological milestone and a revolution. It will radically change the intralogistics of many companies.

The idea to assign various intralogistics tasks to robots certainly isn’t new. But now, technology has reached a point where robots and driverless systems are able to provide both high quality and high financial returns.

In the past, robots were mainly used for tasks in line with the abbreviation DDD – dirty, dull & dangerous. But nowadays, robots impress with tireless precision and will replace or at least support human workers in ever more complex functions.

Some of the solutions on display at CeMAT could be considered groundbreaking. These include robots able to pick over 2,000 products per hour or palletising and depalletising independently, without outside interference. Driverless transport systems, which handle internal transports autonomously, were also among this year’s top innovations.

Significant time savings and improved accuracy enable these systems to reach their break-even rather quickly. More and more companies therefore consider them as superior alternatives to conventional solutions.

Versatile packaging and order picking solutions

Thanks to the internet, lots of companies are now able to sell to different groups of customers. On the one hand, they are still selling to wholesalers and shops, on the other hand they approach their customers directly through an online shop. This is quite a challenge for a distribution centre.

Wholesalers and shops (B2B) usually place few, but large orders. Selling over the internet (B2C) means small orders for a larger number of customers, which requires a completely different order picking and packaging infrastructure. Versatile solutions, working well in both scenarios, are therefore required.

This specific problem was also addressed at CeMAT 2011. It seems there is a trend towards more flexible systems, which are able to adapt easily to the requirements of various industries or product categories.

The following months will show which of the innovations presented at CeMAT are able to prevail in the market and which aren’t. It is safe to say though that intralogistics is an industry in a state of flux and that the big players will continue to look for efficiency increasing solutions.

Which were the trends you were most interested in during CeMAT?

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4 Suggestions for Greener Intralogistics

Efficiency has always been a hot topic in intralogistics, however, the ecological perspective on this is rather new. Therefore it’s not really surprising that many companies are dragging behind when it comes to “green logistics”.

So, how have you been faring? Is your intralogistics getting “greener”.

The waste of natural resources (and with it plenty of money) is a problem that needs to be brought to peoples awareness first. So here are 4 suggestions for greener logistics.

1.) Energy-efficient buildings

The use of renewable sources of energy should always be considered when planning new buildings or retrofits. Putting solar panels on the roof is a popular start and particularly rewarding at large buildings with a lot of roof area. This allows a company to pursue its environmental goals for all the world to see.

But energy-efficiency in buildings is a much broader topic. For instance, is your warehouse sufficiently insulated? Can all the gates, doors and windows be closed properly to prevent the loss of energy? Are you using low-energy light bulbs? Which sources are used for heating?

Combining several useful measures will yield impressive results, leaving a significant mark on your overall energy balance.

2.) Tools for route planning and calculating emissions

Transporting goods between facilities or from distribution centres to customers is common for many enterprises. It’s therefore quite tempting to believe that the most efficient routes would become apparent all by themselves. But that might be a fallacy.

More often than not, there’s considerable potential for a reduction of CO2 emissions when looking at transportation, storage and order picking. Software solutions specifically developed for this purpose are available to assist you.

Computer-optimised tours and routes help you save in two ways. Your fuel consumption will be lower and your drivers will spend less time behind the wheel. There are even cases in which alternative means of transportation should be taken into account, for example the railroad.

Are your routes already optimised, or are your goods making detours every day, of which you’re still unaware?

3.) Using energy-efficient conveyor technology

Most people wouldn’t suspect their conveyor technology to waste a lot of energy, but the truth is, it often does exactly that. Thankfully, modern technology offers solutions to this problem. In some cases, energy recovery systems are able to save up to 50% of energy. So we’re well beyond peanuts here.

Particularly with regard to rising prices for energy, there’s a strong incentive to save energy. Many energy saving measures reach their break-even within 3 years.

The next time you would like to make changes to your conveyor technology, talk to your intralogistics supplier about a couple of things: energy recovery systems, optimised engine efficiency, reduced stand-by consumption, intermediate direct current link, intelligent curve control and off-peak operation. Serious intralogistics providers will have something to say about these topics.

4.) Purchase of complete systems

As tempting as it might seem to buy different components from different suppliers and save some money, there’s a catch. From an environmental point of view it’s usually not a smart decision and you’ll be losing money in the long run because your operating costs will be higher than they need to be.

Complete systems are working more energy-efficiently because the components harmonize perfectly. Reducing the number of interfaces also prevents unnecessary losses. In general, lowering the complexity of a system will most likely lead to positive results, not just for your balance sheet, but also for mother nature.

Do you already know where your intralogistics operations are wasting energy? Or could you think of other measures to get logistic processes in line with the environment? Leave a comment!

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If you just cannot hear “ergonomics“ anymore…

Gehörschutz… it’s maybe because your conveyor technology is way too noisy.

When it comes to ergonomics, many people think in terms of comfortable office furniture. But what about the people working in your distribution centre?

It’s safe to assume that those who commission a distribution centre are not the ones who work there afterwards. This explains why the potential for ergonomic optimisation remains largely untapped, in particular with regard to noise exposure.

Not surprisingly, the movement of goods inside a distribution centre causes a certain level of noise. But just like other things in life, it’s the dosage that makes the poison. Anything above 90 dB will cause permanent damage in your hearing. In comparison: normal conversation takes place at 60-65 dB. (Please remember that decibel are measured logarithmically, so the sound pressure increases by the factor of 30 between 60 dB and 90 dB, not just by 50%).

Those who operate a distribution centre need to be aware of additional costs arising from noise exposure at the workplace: On one hand, productivity decreases, on the other hand, further expenses are necessary to provide noise protection.

From the point of view of the employees, constant exposure to loud noises at the workplace will lead to headaches, insomnia and nervousness.

Besides, even a moderate noise level will decrease concentration, the subjective well-being and performance in general. Noise is first and foremost a stress factor, with all the known consequences.

A high level of noise around an order picking workstation will almost immediately lead to lower through put and higher error rates, in the medium and long term it will result in more frequent sickness absence, an unhappy workforce and higher fluctuation.

But that is merely the beginning, because once the noise level at a workplace is constantly beyond the threshold of 80 dB, the employer has to comply with further obligations according to the European Noise Directive 2003/10/EC.

For example, it is mandatory for a company to supply its staff with ear protectors. In addition, the company needs to organise consulting services and preventive medical check-ups. Obviously, all of this leads to higher expenses.

It’s about time then to take a closer look at the noise level in your distribution centre, but from an ergonomic point of view. To cut to the chase: there’s a load of options available to prevent noise development.

For instance, you could employ silent conveyor technology to save your staff from noise exposure. These systems, which are already on the market, are able to cut the noise by 80%, hence reaching a normal conversation level. One of the ways they archive this is by lowering noise emissions from stoppers and transversal transfers to less than 65 dB.

To enjoy these results, you should only use containers suitable for silent conveyor technology. The base of the container is crucial as far as noise emissions are concerned. In combination with the right roller distances on the conveyor, noise development will remain low.

In my opinion, the health of your staff and the ROI of your distribution centre would both benefit from paying more attention to noise reduction measures. Why not talk to your intralogistics supplier about this, the next time you want to purchase or retrofit conveyor technology?

Do you have some experiences with employees suffering from noise exposure? How did their performances improve after reducing the noise development at their workplaces? Let un know by commenting below!

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Rejuvenation for the Dinosaur of Order Picking

Dinosaurier

Foto: Jakub Halun

Many people consider man-to-goods order picking to be a relic from the pre-automation age – error-prone, inefficient and hence obsolete. That’s totally unjustified, I think. I am confident that this “dinosaur” among order picking systems will stay with us for the larger part of the 21st century.

Admittedly, this can only hold true if we bring this system up-to-date. But let’s first look at the 2 most significant advantages of man-to-goods:

Small investment: The initial investment for a man-to-goods order picking system is considerably smaller than for an automated solution with equal throughput.

While this is correct, you should still be careful here. If you attempt to raise throughput, the increase in variable costs (esp. labour) will force you to think at least about partially automated solutions.

High flexibility regarding the requirements for throughput in your warehouse.

Flexibility is an important issue, especially if your business is seasonal and you’re relying mostly on temporary staff to respond to peak times. In this case, man-to-goods works in your favour.

However, the main disadvantage of this system is a relatively small overall throughput and high costs per individual order. This explains why man-to-goods has been pronounced dead many times over. Nevertheless I’d still argue that it’s too early to say our final goodbye.

While fully-automated order picking solutions might offer higher throughput at lower costs per order picked, they are not suitable for every company, because they require a large initial investment. Particularly if the automated solution wouldn’t be used to capacity most of the time (due to seasonal slumps), the substantial amount of fixed costs would be problematic.

So, how can we increase the throughput of man-to-goods, without burdening ourselves by purchasing an oversized fully-automated solution?

A semi-automated solution seems to strike a balance between benefiting from the advantages of man-to-goods and making the individual order picking process more efficient.

There are several interesting solutions available on the market, three of which I’d like to introduce here:

Pick-by-Voice is an order picking system which connects your order picking employees with your warehouse management systems via a headset. This way, you will not only increase their speed, but also reduce the number of errors, without too much of an investment.

In case you’re basically working with forklifts to move goods around in your warehouse, you might experience significant advantages from using a forklift control system. Your forklift operators will move their vehicles more efficiently compared to driving without guidance. Furthermore, every movement of goods will be recorded so that stock management and physical inventory are closely linked.

Yet another step towards automation would be the so-called Radio-Frequency-Picking. With this solution, your staff uses mobile user interfaces to stay in contact with the warehouse management system. Order picking assignments are shown on a display and can be confirmed by your employees. Radio-Frequency-Picking works both as a stand-alone solution and in combination with other components, such as a forklift control system.

There’s no shortage of options for using man-to-goods in the 21st century. It’s important though to get some expert advice before making your choice, so you’ll get the most from your purchase.

Undergoing such a rejuvenation, the dinosaur man-to-goods will continue to live and prosper is your warehouse for a long time to come. Or do you have any objections? Leave a comment and let us know what you think!

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