Part X requires operation A and operation B on the SAME MACHINE in sequence (First Operation operation B are performed on the same machine). Assume the company will be operating five da week 8 hours per day. The following information is known: Operation Standard Time Efficiency Reliability Defect Rate A 3 min 95% 95% 2% B 5 min 95% 90% 5% O, = l8 Og = 1000 parts/week Operation A Operation B PA=2% Pg=5%
Part X requires operation A and operation B on the SAME MACHINE in sequence (First Operation operation B are performed on the same machine). Assume the company will be operating five da week 8 hours per day. The following information is known: Operation Standard Time Efficiency Reliability Defect Rate A 3 min 95% 95% 2% B 5 min 95% 90% 5% O, = l8 Og = 1000 parts/week Operation A Operation B PA=2% Pg=5%
Practical Management Science
6th Edition
ISBN:9781337406659
Author:WINSTON, Wayne L.
Publisher:WINSTON, Wayne L.
Chapter12: Queueing Models
Section: Chapter Questions
Problem 59P
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Question
100%
In order to produce 1000 units of X in a week
units X is
units X is scheduled weekly for Operation A (due to 2% scrap ratio)
Based on your answer in part a, find the number of machines required to produce 1000
units of X per week.
The total time required to perform Operation B = minutes per week
The total time required to perform Operation A = minutes per week
H= Available Time in a week = minutes /week
Thus
FA = .
FB = .
Since both of the operations A and B are performed on the same machine
machines are required
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