7 Wastes in PMs: Inventory (Part 7 of 8)

More materials, parts, or products on hand than the customer needs right now
This 6th waste can be physically and visually identified.  (See our previous blog posts for the first five of the 7 Wastes: Over-Production, Transportation, Motion, Waiting and Processing.)
Inventory in the form of raw materials, unfinished product or parts, or finished goods sitting on a pallet are non-income producing capital outlays.  These build-ups can also be indicators of production problems and will uncover hidden constraints in the manufacturing process.  Common causes of inventory build-ups include raw materials being stockpiled to compensate for supplier lead times,  a lack of flow for work in process, long set-ups for finished goods, excessive lead times for consumable supplies and paperwork delays for purchased components.
Inventory Waste in PMs:
  • Carrying too many PM related spare parts. Pulling PM parts from stock instead of ordering them as needed, wrong PM task type.
  • Carrying too many Repair related spare parts. Repairing discovery when found.
  • Non-applicable PM tasks. Generic PM's, OEM manuals, CMMS limitations
  • PM that cannot foresee or prevent problem. Reactionary PM addition because of unpleasant event. 
The last of the 7 Wastes in our series will be Defects.
About the Author:
Ed Stanek, Jr. is President of LAI Reliability Systems, Inc.,  an expert consultancy specializing in Lean Maintenance Management techniques including PM Optimization, Work Management, Maintenance Metrics and Value Stream Mapping for Maintenance.  For more information, visit http://www.laireliability or call toll-free at 800-993-2828.

Click here to see the previous post, 7 Wastes in PMs: Processing (Part 6 of 8)...

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