Principles of Operations Management: Sustainability and Supply Chain Management (10th Edition)
10th Edition
ISBN: 9780134181981
Author: Jay Heizer, Barry Render, Chuck Munson
Publisher: PEARSON
expand_more
expand_more
format_list_bulleted
Concept explainers
Question
Chapter 17, Problem 4P
a)
Summary Introduction
To determine: The percentage of failures.
b)
Summary Introduction
To determine: The number of failures per unit hour.
c)
Summary Introduction
To determine: The number of failures per unit year.
d)
Summary Introduction
To determine: The number of units to fail during the following year.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
Verizon Manufacturing Company spent $410,000 in 2019 to inspect incoming components. Of the $410,000, $250,000 is fixed appraisal costs. The variable inspection cost is $0.20 per component. It takes four components for each finished product. Internal failure costs average $80 per failed unit of finished goods. In 2019, five percent of all completed items had to be reworked. External failure costs average $200 per failed unit. The company's average external failures are one percent of units sold. The company manufactures all units as ordered and carries no materials inventories. Seeking to decrease its total cost of quality (COQ), Verizon contracted Quality-is-Free Consultants, Inc. (QIFC) to study ways to improve product quality and to reduce costs. Upon completion of the study, QIFC recommended automatic inspection equipment that requires a $60,400 annual cost for training and $152,000 for equipment rental and maintenance. The new equipment will eliminate $41,000 of the fixed…
A lathe machine worked 10 hours on a shift for 150 days. During this period, 3 failures
occurred. The maintenance operators spent 4 hours, 3.5 hours, and 6 hours respectively, to
repair each of these failures.
a) What is the Mean Time Between Failure (MTBF) for the lathe machine?
b) What is the Mean Time to Repair (MTTR) for the lathe machine?
c) What is the Failure Rate?
d) What is System Availability?
Ro bert Klassen Manufacturing, a medical equipmentmanufacturer, subjected I 00 heart pacemakers to 5,000 hours oftesting. Ha lfway through the testing, 5 pacemakers fa iled. Whatwas the failure rate in terms of the following:a) Percentage of failu res?b) Number of failures per unit-hour of o perating time?c) Number of failures per unit-year?d) If I, I 00 people receive pacemaker implants, how many unitscan we expect to fa il during the following year?
Chapter 17 Solutions
Principles of Operations Management: Sustainability and Supply Chain Management (10th Edition)
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
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, operations-management and related others by exploring similar questions and additional content below.Similar questions
- Robert Klassan Manufacturing, a medical equipment manufacturer, subjected 90 heart pacemakers to 4,000 hours of testing. Halfway through the testing, 6 pacemakers failed. The failure rate in terms of: Percent of Failure is Confirmed by my Professor to be 6.7% Number of Failures per unit-hour is Confirmed by my Professor to be 0.00001724 failures per hour Can you show me how my professor got these answers? Also what is the Number of Failures per unit year = ? Failures per year (round your response to four decimal places. I know that the answer is Not 3. My professor said the answer wasn't that simple.arrow_forwardRobert Klassan Manufacturing, a medical equipment manufacturer, subjected 90 heart pacemakers to 4,000 hours of testing. Halfway through the testing, 6 pacemakers failed. The failure in terms of: A.) Percent of Failures =?% (enter your response as a percentage rounded to one decimal place) B.) Number of Failures per unit-hour= ? Failures per hour (round your response to eight decimal places). C.) Number of Failures per unit-hear= ? Failures per year (round your response to four decimal places) D.) If 1,100 people receive pacemaker implants, how many units can we expect to fail during the following year? Number of Failures= ? failures (round your response to two decimal places). This was an example problem given to me. I have a test with a similar question in April. Any explanation would be greatly appreciated.arrow_forwardThe failure rate of a machine is 1.5%. (a) Compute upper and lower control chart limits with 3 o limit and sample size is 100. (b) Compute upper and lower control chart limits with 3 o limit and sample size is 50. (c) Compute upper and lower control chart limits with 2 o limit and sample size is 100. (d) Compute upper and lower control chart limits with 2 o limit and sample size is 50. (e) Discuss the pattern that you observe in the results you obtained.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_forwardRick Wing, salesperson for Wave Soldering Systems,Inc. (WSSI), has provided you with a proposal for improving thetemperature control on your present machine. The machine uses ahot-air knife to cleanly remove excess solder from printed circuit boards; this is a great concept, but the hot-air temperature con-trol lacks reliability. According to Wing, engineers at WSSI have improved the reliability of the critical temperature controls. The new system still has the four sensitive integrated circuits control-ling the temperature, but the new machine has a backup for each. The four integrated circuits have reliabilities of .90, .92, .94, and.96. The four backup 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 four of thebackup units to .93. What is the reliability of this option?arrow_forwardThe Swiss Cheese model describe two types of failures that can ultimately cause an incident or accident, explain the difference between these failures with regards to the timing, linkage or acts, person(s) involved, factors, etc. 5arrow_forward
- Rick Wing, salesperson for Wave Soldering Systems,Inc. (WSSI), has provided you with a proposal for improving thetemperature control on your present machine. The machine uses ahot-air knife to cleanly remove excess solder from printed circuitboards; this is a great concept, but the hot-air temperature controllacks reliability. According to Wing, engineers at WSSI haveimproved the reliability of the critical temperature controls. Thenew system still has the four sensi tive integrated circuits controllingthe temperature, but the new machine has a backup for each.The four integrated circuits have reliabilities of .90, .92, .94, and.96. The four backup 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 four of thebackup units to .93. What is the reliability of this option?arrow_forward15) Given this three-component system and associated reliabilities What is the system reliability? Group of answer choices a) 0.4772 b) 0.0068 c) 0.5228 d) 0.9225 e) 0.9933arrow_forwardA manufacturer of disk drives for notebook computers wants an MTBF of at least 45,000 hours. Recent test results for 10 units were one failure at 10,000 hours, another at 25,000 hours, and two more at 45,000 hours. The remaining units were still running at 50,000 hours. Determine the following: a) Percent of failures b) Number of failures per unit-hour c) MTBF at this point in the testingarrow_forward
- A 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_forwardDiscuss the concept of Mean Time Between Failures (MTBF) and how it is calculated. Explain its limitations and alternatives for measuring system reliability.arrow_forwardExplain the notion of "infant mortality" in the context ofproduct reliability.arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Practical Management ScienceOperations ManagementISBN:9781337406659Author:WINSTON, Wayne L.Publisher:Cengage,
Operations ManagementOperations ManagementISBN:9781259667473Author:William J StevensonPublisher:McGraw-Hill Education
Operations and Supply Chain Management (Mcgraw-hi...Operations ManagementISBN:9781259666100Author:F. Robert Jacobs, Richard B ChasePublisher:McGraw-Hill Education
Purchasing and Supply Chain ManagementOperations ManagementISBN:9781285869681Author:Robert M. Monczka, Robert B. Handfield, Larry C. Giunipero, James L. PattersonPublisher:Cengage Learning
Production and Operations Analysis, Seventh Editi...Operations ManagementISBN:9781478623069Author:Steven Nahmias, Tava Lennon OlsenPublisher:Waveland Press, Inc.
Practical Management Science
Operations Management
ISBN:9781337406659
Author:WINSTON, Wayne L.
Publisher:Cengage,
Operations Management
Operations Management
ISBN:9781259667473
Author:William J Stevenson
Publisher:McGraw-Hill Education
Operations and Supply Chain Management (Mcgraw-hi...
Operations Management
ISBN:9781259666100
Author:F. Robert Jacobs, Richard B Chase
Publisher:McGraw-Hill Education
Purchasing and Supply Chain Management
Operations Management
ISBN:9781285869681
Author:Robert M. Monczka, Robert B. Handfield, Larry C. Giunipero, James L. Patterson
Publisher:Cengage Learning
Production and Operations Analysis, Seventh Editi...
Operations Management
ISBN:9781478623069
Author:Steven Nahmias, Tava Lennon Olsen
Publisher:Waveland Press, Inc.