EP PRIN.OF OPERATIONS MGMT.-MYOMLAB
10th Edition
ISBN: 9780134183848
Author: HEIZER
Publisher: PEARSON CO
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Question
Chapter 17, Problem 21P
a)
Summary Introduction
To determine: The expected number of breakdowns per year.
b)
Summary Introduction
To determine: The cost of current maintenance policy.
c)
Summary Introduction
To determine: The most economical policy.
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DuLarge Marine manufactures diesel engines for shrimp trawlers and other small commercial boats. One of their automated machines has caused several problems. Over the past 30 weeks, the machine has broken down as indicated below. Each time the machine breaks down, the firm loses an average of $3,000 in time and repair expenses. If preventive maintenance were implemented, it is estimated that an average of only one breakdown per week would occur. The cost of preventive maintenance is $1,000 per week.
Number of breakdowns per week
0
1
2
3
4
Frequency (Number of weeks that breakdowns occurred)
8
3
5
9
5
What is the weekly total maintenance cost of this program?
Given the following data, find the expected breakdown cost. The cost per breakdown is $200.
Number of breakdowns per week
0
1
2
3
4
Weekly frequency
5
12
10
18
5
13) Great Southern Consultants Group's computer system has been down several times over the…
The fire department has a number of failures with its oxygen masks and is evaluating the possibility of outsourcing preventive maintenance to the manufacturer. Because of the risk associated with a failure, the cost of each failure is estimated at $2,200. The current maintenance policy (with station employees performing maintenance) has yielded the following history:
Number of breakdowns
0
1
2
3
4
5
Number of years in which breakdowns occurred
5
3
1
4
6
2
a) The expected number of breakdowns per year with station employees performing maintenance = breakdowns per year (round your response to two decimal places).
A plastic injection molding machine operates 334 days a year. It is the bottleneck workstation in a process that produces plastic housed wall clocks.
Industrial engineers collected data on the probability of machine breakdowns, the costs of preventive maintenance, and the cost of a breakdown.
Number of Molding
Machine Breakdowns
per Day
Probability of a
breakdown
0
0.32
1
0.27
2
0.22
3
0.13
4
0.06
The cost of preventive maintenance is high due to performing it between 1 and 4 a.m. each day by two machine experts. The preventive
maintenance cost is $2,030 per day including replacement parts, cleaning, and software upgrades. The cost of a breakdown of $1,940 is also high
because the downstream workstations can only work until all work-in-progress inventory is completed; then the entire process must stop. What are
the economics of the situation? Do not round intermediate calculations. Round your answers to the nearest cent.
The expected cost of a breakdown per day is $
The manufacturing…
Chapter 17 Solutions
EP PRIN.OF OPERATIONS MGMT.-MYOMLAB
Ch. 17 - Prob. 1EDCh. 17 - Prob. 1DQCh. 17 - Prob. 2DQCh. 17 - Prob. 3DQCh. 17 - Prob. 4DQCh. 17 - What is the trade-off between operator-performed...Ch. 17 - Prob. 6DQCh. 17 - Prob. 7DQCh. 17 - Prob. 8DQCh. 17 - Prob. 9DQ
Ch. 17 - Prob. 10DQCh. 17 - Prob. 1PCh. 17 - Prob. 2PCh. 17 - Prob. 3PCh. 17 - Prob. 4PCh. 17 - Prob. 5PCh. 17 - Prob. 6PCh. 17 - Prob. 7PCh. 17 - Prob. 8PCh. 17 - Prob. 9PCh. 17 - What is the reliability of the system shown?Ch. 17 - Prob. 11PCh. 17 - Prob. 12PCh. 17 - Rick Wing, salesperson for Wave Soldering Systems,...Ch. 17 - Prob. 14PCh. 17 - Prob. 15PCh. 17 - What are the expected number of yearly breakdowns...Ch. 17 - Prob. 19PCh. 17 - Prob. 20PCh. 17 - Prob. 21PCh. 17 - Prob. 1CSCh. 17 - Prob. 2CSCh. 17 - Prob. 3CS
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