logo

Making processes and organizations more effective

  • Home
  • Mission
  • Blog
  • Archives
    • Archive – Strategic Management
    • Archive – Inventory Management
    • Archive – Supply Chain Concepts
    • Archive – Tools
    • Archive – Lean Six Sigma/Theory of Constraints/Forecast
  • Facility Layout Posts
  • Helping You
  • Presentations
  • Case Studies
    • Lean Six Sigma
    • Logistics and Customer Service
    • Education and Training
    • Culture Change
  • Links
  • Biography
  • Contact Us

Category Archives: Tools

Inventory Drivers – Cycle Counts

Inventory driverWhy do most organizations do physical inventories at least once a year?  Is it because their inventory accuracy is so bad they do not know what they really have in stock?  Is it a way of finding out where the stock is in the facility?  Is it just somebody’s bad idea of a joke?  Actually, the main reason for the annual physical inventory is that the government requires all organizations to report on the value of the organization which includes the inventory value.  An outside financial auditor must sign off on the reported value and if they are not comfortable that the book value is accurate they will require a physical inventory to “prove” the value.  Note that they are interested in the total value, not specific item counts.  This means that if the errors cancel each other out and the total value is within acceptable limits the count will be accepted and entered in the system as the inventory record.  With regards to inventory accuracy, we the inventory control world are less interested in the value and more interested in the specific count of the items.  The value may be right but the counts may be wrong and being short one or more items from the “official” count can create massive problems.  As an example I would refer you to a poem published in the 1700’s by Benjamin Franklin called “For Want of a Nail”.  I won’t go into the full poem but in essence the lack of a nail resulting in losing a kingdom.  Similarly, being short on a count can lead to production or shipment shutdowns and potentially significant costs.  This is why many companies have implemented or investigated Cycle Count programs – they are inherently more accurate and cheaper in the long run than a Physical Inventory.  (By the way, the poem predates Benjamin Franklin and is still around today.  Obviously inventory issues have plagued organizations for a very long time.  I’m sure that at some point a long time ago there was a group of cavemen standing around shouting at some poor stock keeper – “What do you mean there are only 2 spears?  There should be 20!”)Inventory Driver Cycle Count

We have touched on cycle counting a couple of times already in other posts but I wanted to go into this topic in more detail.  While a Cycle Count program is definitely a desirable tool it will not work on its own. Without support from many other factors it will just become an exercise in frustration for everyone involved.   Some of these other factors are timely movement reporting, process discipline, clear material identification, integrated IT systems and dedication to organized storage.  Just to be clear, while fixing the incorrect amounts is important; it is NOT the key to a successful cycle count program.  The key is in identifying the reason for the inaccurate count and putting a fix into the appropriate process to eliminate the reason for the failure.  Cumulatively, all these changes will predispose your process to having and maintaining an accurate count.  The better your accuracy, the less safety stock you will need to ensure acceptable customer service levels.  Reducing inventory will make it easier to maintain a better accuracy level…thereby creating a self-reinforcing positive improvement cycle.   Increased accuracy also reduces numerous other costs such as expediting cost, production and shipping delays, excessive searching for “lost” material and better lot control (especially critical in a FIFO environment).  All of these combine together to make Cycle Counting one of the more important Inventory Drivers when trying to control and optimize your inventory levels.

While I am not going to use this forum to discuss how to set up a cycle count program (contact me directly if you want to discuss that) there are a couple of precursors that I do consider important.  First and foremost, no cycle count program will work well without an embedded and effective Root Cause Analysis culture in place.  By culture I mean a process that is so deeply embedded that everyone in the organization accepts it, is involved in it and believes that it is of critical value to their customers.  Another way to think of it is Continuous Improvement on steroids.  It is even better if Appreciative Inquiry is also part of this process.  (Never heard of Appreciative Inquiry?  Think of it as the mirror image of Root Cause.  If Root Cause can be described as “something went wrong – how do we stop it from repeating”.  Appreciative Inquiry can be described as “something went right – how do we make sure it happens more often”.  Believe me when I say that Appreciative Inquiry is much more difficult than Root Cause but it is also probably more effective for the long term growth of the organization.

The second most important precursor is discipline.  By that I mean everyone having the internal discipline to always do the right thing, no short cuts, and recording all transactions in a timely fashion.  For example, when a back ordered material arrives at the door and needs to be shipped out immediately, the receiving paperwork still needs to be completed before the shipping documentation and both need to be done immediately.  Always keep in mind that the transaction is not complete (and the inventory is wrong) until the paperwork is completed IN THE SYSTEM.  Just writing it down and submitting it for keypunching at a later time is not sufficient.  (While a real time RF system is not a requirement it will definitely improve inventory accuracy.)

The final precursor is similar to the second.  Everyone in the company must have a commitment to cleanliness and organization.  The old saying “a place for everything and everything in its place” sums it up perfectly.  If there are pieces of broken pallets on the floor, anybody (including management) should put them in the garbage, If something is not where it belongs it should be put back immediately.  Floors should be clean and clear, walls should be clean and accessible, machinery should be in good repair and available as needed.  Working conditions influence mind sets.  If the work area is messy and disorganized, people will develop a tendency to take short cuts or not follow through completely.  In the end a company’s culture will decide whether a program such as Cycle Counting will succeed or not.

Are you considering implementing a Cycle Count Program?

Are all the precursors in place in your organization?  Are you ready to implement a SUCCESSFUL Cycle Count program?  Contact Ed White at Jade Trillium Consulting to discuss whether this will help your organization and how best to proceed.

Next posting we will explore Service Levels – How does a customer service measure affect Inventory Management?  In the meantime, enjoy thinking about Cycle Counting.  Talk to your friends and co-workers about their experience and thoughts on this topic, especially what it means for your organization.   And, as always, I would love to hear back on your (and their) thoughts.  Just fill in the comment box below along with your contact information to let me know what you think.flag

Inventory Drivers – Inbound Lead Time

Inventory driverAs discussed in my previous posting on Outbound Lead Time there are three different types of Lead Time, all of which affect Inventory Levels in similar but different ways.  The three types are Inbound, Internal and Outbound lead-time.  In this posting I want to concentrate on Inbound Lead Time.  As with Outbound Lead Time, Inbound also has two significant aspects to it – Logistics and Supplier Lead Time.  Normally these two aspects are combined together in that the supplier will quote a total lead time from when they receive the Purchase Order to when you can expect delivery at a specific location.  Of course, this is assuming that the supplier is arranging shipment of the product.  Sometimes however, it is NOT desirable for them to be arranging the shipment in which case you need to get involved in the logistics again.  Even when the supplier does arrange the shipments it is still a good idea to at least review their logistical decisions.  For example, when picking a delivery company (usually trucking) there will be certain biases that will be applied to determine which company to use.  If these are not in line with your own biases then the disconnect will end up generating pressure for more inventory on hand.  As an example, let’s say your supplier picks their trucking companies purely by cheapest cost.  You then need to ask, why are they the cheapest and, more importantly, what are they skimping on to reduce costs.  In this case, let’s say that the upshot of this decision is that the shipping company is not good at hitting delivery times.  Depending on how much variance there is between requested delivery time and actual delivery time this could create a shortage for your shipping or manufacturing departments.  In order to ensure that this does not happen, your organization comes under increased pressure to keep a higher safety stock level.  (Ordering material to arrive before it is needed is just another type of safety stock and in Lean terms, is also a waste.)  This extra safety stock has the potential for two types of pain.  First and most obvious is the carrying cost of the extra inventory.  The second type of pain is tied to the space required.  If your material goes into tanks, silos or fixed storage locations there may not be enough physical room for the material to be stored.  In these cases there is a fine line between the earliest that material can be received and the latest (stock out) it can be received.  In cases like this it actually may be easier and cheaper to pay a little more up front for a better shipping company and pay a little less in inventory and warehousing costs.Inventory Driver Lead Time Inbound

There are also many reasons why you may want to arrange the shipping yourself.  If the supplier arranges the shipment they will usually bury the cost in the overall cost of the material, including upcharges to ensure they do not lose money on transport.  More importantly, there may be reasons where you arranging the shipment opens up options not available to the supplier.  For instance, if you have a couple of suppliers in the same area with LTL loads you could easily arrange one truck with multiple stops to pick up and deliver all the material.  Another possibility is that, depending on the size of your company you may be able to negotiate a cheaper rate than a smaller supplier can.  Maybe you can use your delivery trucks to then pick up material from suppliers in the same area.  There is a direct connection between how often material is delivered and how much inventory you need to keep.  A regular “milk run” set-up can often reduce total inventory levels.  It may not even be a money issue.  Maybe you just want to deliver material straight to your customers from the supplier and do not want the supplier to arrange it (shipping paperwork would reflect the suppliers name rather than yours).  Direct delivery would essentially eliminate that inventory from your books.

The other aspect I mentioned was the Supplier Lead Time, basically this is their version of Internal Lead Time.  It is the length of time it takes them to receive an order, process the order and prepare it for shipment.  While this is not really under your control, do remember again that there is a direct link between the length of time for something to happen and the amount of inventory you need to carry.  It might be worthwhile to pay a little more for material from a supplier with a shorter lead time if it allows you to reduce your inventory costs overall.  Supplier lead time is actually a great differentiator when you are deciding between different suppliers.  Do not just look at the cost quoted.  You need to add in additional internal costs that you will be covering depending on which supplier you pick.  If one supplier’s lead time will require you to keep extra stock on hand and the cost to do this is more than the cost difference between the suppliers then you need to ask who is really cheaper.  Very few organizations add in the indirect costs for any decision (such as which supplier to buy from), mostly because it can be painful to determine what they are.  The problem is that the indirect costs can accumulate to a very expensive total.

Just to give you an something additional to think about, implementing a Lean Six Sigma program will give you a number of tools for identifying and eliminating many of these costs.

Next posting we will explore the effects caused by your internal lead time.  In the meantime, enjoy thinking about this topic.  Talk to your friends and co-workers about their experience and thoughts on this topic, especially what it means for your organization.   And, as always, I would love to hear back on your (and their) thoughts.

flag

Previous Entries
Next Entries

RSS Feed

RSS Feed RSS - Posts

RSS Feed RSS - Comments

Recent Posts

  • Forecasting your MRO stock
  • Segmenting your MRO stock
  • 10 RULES TO IMPROVE COMMUNICATIONS
  • COMMUNICATIONS: YOUR NUMBER ONE FORECASTING TOOL
  • What is ”Operational Excellence”?

Categories

  • Forecast (3)
  • Inventory Management (19)
  • Lean 6 Sigma (12)
  • Strategic Management (21)
  • Supply Chain Concepts (33)
  • Theory of Contraints (6)
  • Tools (27)
  • Value (6)

Pages

  • Home
  • Mission
  • Blog
  • Archives
  • Helping You
  • Presentations
  • Case Studies
    • Lean Six Sigma
    • Logistics and Customer Service
    • Education and Training
    • Culture Change
  • Links
  • Biography
  • Contact Us

Log In

  • Register
  • Log in
  • Entries RSS
  • Comments RSS
  • WordPress.org
Copyright Jade Trillium Consulting 2013