Cycle-closing product chain management with appropriate production site metabolism toward zero-emission in an industrial machinery corporation

In the present study, an attempt is made to evaluate environmental efficiency through product chain and site metabolism management in an industrial machinery corporation in Japan. Recent industrial ecology practice in manufacturing industry in Japan indicates that environmentally transferred technology derived from product renovation is utilized in improving environmental performance in process-oriented metabolism. From this viewpoint, inverse manufacturing and eco-industrial park strategy are applied in the development concept of a demonstration site in an industrial machinery factory. As a result of the analysis using material flow analysis and life cycle assessment, the following are clarified: firstly, design for disassembly reduced disassembly time per unit of pump to 88%; secondly, a parts-reuse scenario gives great cost reduction up to 57% compared with a conventional scenario; finally, carbon dioxide emission can be reduced to 14.5% of usual operation in the case study of facility management with pump reuse and positive maintenance.