“Indirect” Lean

Lean initiatives are not just for production and other ‘direct’ activities. Lean principles can be applied to ‘indirect’ costs and activities to good effect as well. And these efforts are definitely green.

At a recent meeting of our local APICS chapter, two gentlemen from BAE Systems here in New Hampshire presented on a “Lean Energy” program they conducted at multiple BAE facilities. The focus was on identifying waste and taking action to reduce or eliminate as much of that waste as was practical. Perhaps the most interesting aspect of their journey was the use of Lean techniques to make these improvements.

BAE had already applied Lean to their production processes and had a number of Lean-trained individuals to help in this process. They applied standard Lean tools like value stream mapping, A3, and Kaizen to the use of energy throughout several facilities, with great success.

This energy conservation initiative went beyond the typical steps of installing energy-saving light bulbs and beefing up the insulation around heated areas. They looked at all forms of energy usage and founds many opportunities to reduce waste and save the company a lot of money while at the same time improving performance in other areas.

One example concerned the compressed air system, which was used throughout the plant. They discovered that there were many, many small leaks that each individually was inconsequential but taken together constituted a significant misuse of the resource. They were able to avoid the purchase of a larger compressor and, in fact, reduce the load enough to extend the life of the existing system by several years – it had been needlessly overworked. The cost to fix the leaks was relatively minor.

Another striking example was efficiencies in the use of an oven. They added insulation, changed procedures to minimize heat loss and scheduled the oven more intelligently to maximize throughput and reduce the number of hours the oven had to be kept up to temperature, saving considerable energy.

They summarized their efforts this way:

• It was the right thing to do
• There was a definite direct pay-back
• It was virtually free with an immediate ROI
• It was a ‘fairly easy’ way to reduce energy costs and decrease demands on facilities and maintenance
• The Lean approach worked great – “If you know lean, this is easy. If you don’t know lean, it’s still easy.”
• It was unprecedented – not being done anywhere – but would be duplicated and expanded throughout BAE