# Question: The production manager must determine the processing sequence for seven

The production manager must determine the processing sequence for seven jobs through the grinding and deburring departments. The same sequence will be followed in both departments. The manager’s goal is to move the jobs through the two departments as quickly as possible. The foreman of the deburring department wants the SPT rule to be used to minimize the work-in-process inventory in his department.

a. Prepare a schedule using SPT for the grinding department.

b. What is the flow time in the grinding department for the SPT sequence? What is the total time needed to process the seven jobs in both the grinding and deburring departments?

c. Determine a sequence that will minimize the total time needed to process the jobs in both departments. What flow time will result for the grinding department?

d. Discuss the trade-offs between the two alternative sequencing arrangements. At what point would the production manager be indifferent concerning the choice ofsequences?

a. Prepare a schedule using SPT for the grinding department.

b. What is the flow time in the grinding department for the SPT sequence? What is the total time needed to process the seven jobs in both the grinding and deburring departments?

c. Determine a sequence that will minimize the total time needed to process the jobs in both departments. What flow time will result for the grinding department?

d. Discuss the trade-offs between the two alternative sequencing arrangements. At what point would the production manager be indifferent concerning the choice ofsequences?

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