EBK PRINCIPLES OF OPERATIONS MANAGEMENT
10th Edition
ISBN: 8220102744059
Author: HEIZER
Publisher: PEARSON
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Chapter 17, Problem 14P
Summary Introduction
To determine: The reliability of each design.
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As VP for operations at Méndez-PiñeroEngineering, you must decide which product design, A or B, hasthe higher reliability. B is designed with backup units for components R3 and R4. What is the reliability of each design?
As VP for operations at Méndez-Piñero Engineering,
you must decide which product design, A or B, has the higher reli-ability. B is designed with backup units for components R3 and R4 .
What is the reliability of each design? PX
0.99 0.95 0.998 0.995Product Design AR1 R2 R3 R4
0.99 0.95 0.985 0.990.95 0.99
A Web server has five major components that must all function in order for it to operate as intended. Assuming that each component of the system has the same reliability, what is the minimum reliability each one must have in order for the overall system to have a reliability of .98?
Chapter 17 Solutions
EBK PRINCIPLES OF OPERATIONS MANAGEMENT
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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- A chain is composed of identical links with reliability of 0.9. How many links must a chain have in order for its reliability to be less than 0.5? Hint: Reliability of a series system is Rs=R1*R2….*Rn, which equals 0.9 multiplied by itself n times to get less than 0.5. Hence, Rs-0.5=0.9. By applying Ln to both sides, ln(0.5)=n*Ln(0.9). Now solve for n to get the answer.arrow_forwardConsider a product with three components in series, with reliabilities of 0.90, 0.80, and 0.99 for components A, B, and C, respectively. Furthermore, component B uses a backup that also has a reliability of 0.80. What is the reliability of the system?arrow_forwardA system consisting of two identical components A& B. (a) Under what conditions does the system fail? (b) Ifthe reliability (i.e. the ability of the system to perform itsintended function satisfactorily) of components A & B are90% and 80%, respectively, under what conditions does thesystem fail?arrow_forward
- 10arrow_forwardAs VP for operations at Mendez-Pifiero Engineering,you must decide which product design, A or B, has the higher reliability.B is designed with backup units for components R3 and R4.What is the reliability of each design?arrow_forwardAn engine system consists of three main components in a series, all having the same reliability. Determine the level of reliability required for each of the components if the engine is to have a reliability of 0.998.arrow_forward
- Rick Wing, salesperson for Wave SolderingSystems, Inc. (WSSI), has provided you with a proposal forimproving the temperature control on your present machine.The machine uses a hot-air knife to cleanly remove excess solder from printed circuit boards; this is a great concept, butthe hot-air temperature control lacks reliability. According toWing, engineers at WSSI have improved the reliability of thecritical temperature controls. The new system still has the foursensitive integrated circuits controlling the temperature, butthe new machine has a backup for each. The four integratedcircuits have reliabilities of .90, .92, .94, and .96. The fourbackup circuits all have a reliability of .90.a) What is the reliability of the new temperature controller?b) If you pay a premium, Wing says he can improve all fourof the backup units to .93. What is the reliability of thisoption?arrow_forwardA serial system is assembled in house from 20 parts. To be successful in the marketplace the system has to have three sigma reliability. What level of reliability of each part is necessary to achieve that level of the overall performance?arrow_forwardThe ABC Bank processes loan applications through 3 clerks set up in series, with reliabilities of 0.90, 0.80, and 0.99. a. The bank manager decided to provide redundancy to the two least reliable clerks. Reliability measures of the redundants are equal to the corresponding primary clerk. What is the new system reliability? Show illustration and complete solution. b. What will be the system reliability if the bank replaces the clerk with reliability measure of 0.80 and his redundant, with a 90% reliable clerk? Show illustration and complete solution.arrow_forward
- Please do not give solution in image format thankuarrow_forwardExplain how design for supportability relates to the following: (i) design for reliability (ii) design for maintainability iii). design for human factorsarrow_forwardWhen a system reliability target is not met, what must be done? Discuss reliability block diagramarrow_forward
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