Reduction of lead time through curtailment of cycle time of a supplier-a case example

  IJETT-book-cover  International Journal of Engineering Trends and Technology (IJETT)          
© 2017 by IJETT Journal
Volume-54 Number-4
Year of Publication : 2017
Authors : Raktim Dasgupta, Arup Ranjan Mukhopadhyay, Sadhan Kumar Ghosh
DOI :  10.14445/22315381/IJETT-V54P233


Raktim Dasgupta, Arup Ranjan Mukhopadhyay, Sadhan Kumar Ghosh "Reduction of lead time through curtailment of cycle time of a supplier-a case example", International Journal of Engineering Trends and Technology (IJETT), V54(4),233-251 December 2017. ISSN:2231-5381. published by seventh sense research group

This study demonstrates the methodology for reduction of cycle time in the finishing department of a manufacturing company in India. The DMAIC path of lean sigma has been followed. The process performance has been assessed through summary statistics, value stream mapping, PERT technique and sigma rating. Action plans to reduce cycle time have been chalked out through process FMEA. The application of Gnatt chart has helped effectively to reduce the replacement time of rejected material. The extent of improvement in cycle time is found to be 121 days to 69 days for Bitumen coated ductile iron pipes, and 129 days to 78 days for FBE coated ductile iron pipes. This paper will be valuable to many practitioners and researchers of lean sigma for understanding the systematic structured application of quality management tools in a real life situation through appropriate quantification.

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Lead time, PFMEA, PERT, Gnatt chart, sigma rating, value stream mapping.