EP PRIN.OF OPERATIONS MGMT.-MYOMLAB
10th Edition
ISBN: 9780134183848
Author: HEIZER
Publisher: PEARSON CO
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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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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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- The annual operating costs of Machine A are $2,000. The machine will perform satisfactorily over the next five years and has an estimated market value (MV) of $3,000 at the end of its useful life. A salesperson for another company is offering a replacement, Machine B, for $14,000, with a MV of $1,400 after five years. Annual operating costs for Machine B will only be $1,500. It is believed that $10,000 could be obtained for the old machine A if it were sold now. If the before-tax MARR is 10% per year, determine whether the old machine A should be replaced by the new machine B.arrow_forwardWill and Jason Najami are going to open a swimming pool service this summer. They will put in pools, repair damaged ones, and provide a pool cleaning service. They have decided to use a service guarantee as their primary service recovery tool. How can they make sure that their service guarantee is effective?arrow_forwardMachine A was purchased last year for $20,000 and had an estimated market value of $2,000 at the end of its 6-year useful life. Annual operating costs are $2,000. The machine will perform satisfactorily over the next 5 years. A salesperson for another company is offering a replacement, machine B , for $14,000 with a market value of $1,400 after 5 years. Annual operating costs for machine B will only be $1,400. A trade-in allowance of $10,400 has been offered for machine A. If the MARR is 12% per year, should you buy the new machine? Use RORAI method. Write a breif interpretation of your answer.arrow_forward
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