30 December 2009
A machining center in a job shop of a local fabrication company has five unprocessed jobs remaining at a particular point in time. The jobs are labeled 1,2,3,4and 5 in the order they enter the shop. The respective processing time and due dates are given in the time table below: Job number : 1 2 3 4 5 Processing time(days): 11 29 31 1 2 Due date: 61 45 31 33 32
The production manager and the marketing manager of the job shop have different opinion on customer service. The production manager feels that for certain jobs delays are inevitable in the basic structure of the job shop working the loss as Rs.50 per day of delay with respect to delivery date.
The marketing manager feels delay would cost the organization Rs.1000 per day of delay.
Examine the three commonest sequencing rules and state sequencing rule that would satisfy the organization requirement best.