Greening the Supply Chain

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Greening the Supply ChainPollution Prevention
for Product SystemsJohn O. SparksU.S.
Environmental Protection AgencyDesign for the
Environment Program
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Material Flows Life Cycle Concepts
Unsustainable Product Life Cycle
Stuff
Extraction conversion
Dispose
Manufacturing
Use
Discharges to air, land, water in all stages
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OEM Supply Chains ExampleAuto Assembly
Impact

• 12,000,000 new cars/light trucks made annually
• about 20,000 parts per unit and most are
  out-sourced
• Total finished product is 24,000,000 tons
• Estimate about 3 lbs. non-product output per lb.
  of finished product
• cleaners, lubricants, scrap, process sludges,
  etc.
• could be much higher if process waters included
• Non-product output approximately 72,000,000 tons
• Most in the suppliers facilities
• auto company public ultimately pays for waste.

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Material Flows Life Cycle Concepts
GSC Vision Sustainable Product Life Cycle
Use Servicing Repair
Assembly Manufacturing
Inputs
Dispose
Re-manufacturing Recycling
End-of-life Disassembly
Fewer discharges to air, land, water in all stages
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Environmental Impact Potential 4 Workshops

• Reduced Electricity Demand
• 1, 880,000 1,915,000 kWh annually
• Reduced CO2 Emissions
• Transport related reductions
• 149,800 150,200 lbs. annually
• Reduced Transport Fuel Use
• 21,990 22,080 gallons annually
• Reduced Solid Waste Disposal
• 278,000 319,000 lbs. Annually
• Additional environmental opportunities
• Paint disposal reduction
• Steel scrap reduction