Repetitive lots: The use of a sequence-dependent set-up time scheduling procedure in group technology and traditional shops

Repetitive lots: The use of a sequence-dependent set-up time scheduling procedure in group technology and traditional shops

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Article ID: iaor1990933
Country: United States
Volume: 7
Issue: 1/2
Start Page Number: 203
End Page Number: 216
Publication Date: Oct 1987
Journal: Journal of Operations Management
Authors:
Keywords: production
Abstract:

This study investigated a procedure designed to improve performance in group technology shops. The repetitive lots (RL) scheduling procedure capitalizes on the sequence dependency of set-up times in shops. This procedure scans a queue of waiting jobs, seeking to find a job identical to the job that was just processed on a machine, which should eliminate the need for a machine setup. The truncated repetitive lots (TRL) procedure prevents lots from becoming excessively large by allowing no more than K jobs to be combined. In this study, K was set at five. Computer simulation was used to compare a shop configured as a group technology shop with the same shop configured as a traditional job shop and as a hybrid, which combined features of both group technology and traditional job shops. The use of RL scheduling procedures clearly led to an improvement over first-come, first-served performance by all shops. This improvement was greatest in the group technology shops (those with dedicated machines).

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