The Globalized Supply Chain models that have formed and become popular in the last several decades have been significantly impacted by recent events. Covid, pirates in the Red Sea, hurricanes, the bridge wreck in Baltimore, and the Panama Canal water shortages are the most glaring examples.
The desire to reduce labor and materials costs comes into stark contrast with transportation spend when we experience these types of disruptions.
Lean Manufacturing
The general concept of Lean Manufacturing is often associated with a reduction of inventory and JIT (Just In Time Transportation). More classically, it’s defined as having the materials you need at the point of use, in the quantity you need, when you need them.
Toyota, for example, is often trumpeted as one of the premier examples of Lean Manufacturing. Lineside in the plants, you will find clean and tidy workspaces, with just enough parts to keep the workers busy during a shift from a practical perspective.
"The general concept of Lean Manufacturing is often associated with a reduction of inventory and JIT. More classically, it’s defined as having the materials you need at the point of use, in the quantity you need, when you need them."
What is often confused in that terminology is an application to an overall inventory strategy. While the Lineside build locations in a Toyota plant may only have the materials needed for the next vehicle, next hour, or current shift, I have seen parts stored en mass across the street in large trailer lots and distribution centers.
I recall trailer ratios in the 7 or 9 to 1 ratio during my experience there, with weeks of inventory on hand at any given time for certain parts. Lineside is lean, overall inventory is “Lean” (not skinny), but transportation is not “just in time” being delivered directly to lineside for manufacturing as it arrives.
Just In Time Manufacturing
JIT manufacturing is typically done to reduce inventory carrying costs, i.e., the interest payments on financed raw materials and parts purchases. The problem with this approach is that inventory reduction is a one-time save for removing bloated inventory levels while you are now forced to deliver smaller incremental amounts of inventory, more frequently, to keep up with the pace of manufacturing.
So instead of one full trailer of parts, you are now getting five partial or LTL-style deliveries a week to fulfill the same demand.
The problem with this model occurs when we experience all the disruptions we have seen in the Global Supply Chain in the last several years. Instead of paying a premium on one shipment, you are now paying a premium on all five. As the Supply Chain backs up, more and more inventory is added to the pipeline, increasing congestion and premiums and causing you to have a cost spiral in Transportation that can become unmanageable while increasing your inventory pipeline and carrying costs again.
"The problem with this model occurs when we experience all the disruptions we have seen in the Global Supply Chain in the last several years."
Conclusion
A balanced strategy is required to protect your business from external global factors. When prices are low, hedge and buy ahead if you have the capital and storage space to avoid the finance charges or expected fluctuations in raw materials costs. Where practical, reducing the distance between A to B and the number of times materials are touched are good practices to consider when trying to build a secure and consistent supply chain.
While this approach may be less dynamic, I’m not advocating for being static in your approach either. The cost and benefit of procurement and sourcing strategies should be evaluated constantly, particularly as new products and manufacturing plans are being developed.
About the Author
Adam Gray is a Supply Chain and Logistics Professional with 25+ Years of experience in the industry. His career started in Brokerage and Procurement, expanding to Fleet Operations, Warehousing, Transportation, Network Design, and Systems Implementation. When not solving Supply Chain issues, Adam can be found fishing and playing music as frequently as possible.
About JBF Consulting
Since 2003, we’ve been helping shippers of all sizes and across many industries select, implement and squeeze as much value as possible out of their logistics systems. We speak your language — not consultant-speak – and we get to know you. Our leadership team has over 100 years of logistics and TMS implementation experience. Because we operate in a niche — we’re not all things to all people — our team members have a very specialized skill set: logistics operations experience + transportation technology + communication and problem-solving skills + a bunch of other cool stuff.
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