Twelve tasks, with times and precedence requirements as shown in the following table, are to be assigned

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Twelve tasks, with times and precedence requirements as shown in the following table, are to be assigned to workstations using a cycle time of 1.5 minutes. Two heuristic rules will be tried: (1) greatest positional weight, and (2) most following tasks. In each case, the tiebreaker will be shortest processing time.

Length Immediate Task (minutes) Predecessor 0.1 a b 0.2 a 0.9 b 0.6 e 0.1 0.2 d, e 0.4 h 0.1 0.2 0.7 k 0.3 0.2 k

a. Draw the precedence diagram for this line.

b. Assign tasks to stations under each of the two rules.

c. Compute the percentage of idle time for each rule.


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Operations Management

ISBN: 978-0078024108

12th edition

Authors: William J Stevenson

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