Mylab Operations Management With Pearson Etext -- Access Card -- For Operations Management: Sustainability And Supply Chain Management (13th Edition)
13th Edition
ISBN: 9780135225899
Author: Jay Heizer, Barry Render, Chuck Munson
Publisher: PEARSON
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Question
Chapter 17, Problem 9P
Summary Introduction
To determine: The reliability of the given components.
Introduction: Reliability is a degree, where the performance of a product would reach the expected period of time. Reliability helps to mitigate or protect a product over time.
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QUESTION 6 (MAINTENANCE AND RELIABILITY: COMPARING PREVENTIVE AND BREAKDOWN
MAINTENANCE COSTS)
17.24 Wharton Manufacturing Company operates its 23 large and expensive grinding and lathe machines
from 7 A.M. to 11 P.M., 7 days a week. For the past year, the firm has been under contract with Simkin and
Sons for daily preventive maintenance (lubrication, cleaning, inspection, and so on). Simkin's crew works
between 11 P.M. and 2 A.M. so as not to interfere with the daily manufacturing crew. Simkin charges $645
per week for this service. Since signing the maintenance contract, Wharton Manufacturing has noted an
average of only three breakdowns per week. When a grinding or lathe machine does break down during a
working shift, it costs Wharton about $250 in lost production and repair costs.
After reviewing past breakdown records (for the period before signing a preventive maintenance contract
with Simkin and Sons), Wharton's production manager was able to summarize the following patterns:
1…
QUESTION 2
A. In Akhwan Company, operations director Mr Tamad recently realized there had been an
increase in products failing during the final quality checks. These checks were carried out
in the QC (quality control) laboratory, which tested finished goods products before being
released for sale. The product failure rate had risen from 1% to 4% in two years' time which
meant an increase of hundreds of items of output a month which were not sold to Akhwan's
customers. The failed products had no value to the company once they had failed QC as the
rework costs were not economic. Because the increase was gradual, it took a while for Mr
Tamad to realize that the failure rate had risen.
A thorough review of the main production operation revealed nothing that might explain the
increased failure and so attention was focused on the QC laboratory. For some years, the
QC laboratory at Ikhwan, managed by Ramly, had been marginalized in the company, with
its two staff working in a remote…
Question (2):
(15 Marks)
A cylindrical specimen of a nickel alloy having an original diameter of 10.3 mm and an
elastic modulus of 207 GPa experiences only elastic deformation when a tensile load of 8850
N is applied. Compute the maximum allowable elongation if the maximum length of the
specimen before deformation is 475 mm.
Chapter 17 Solutions
Mylab Operations Management With Pearson Etext -- Access Card -- For Operations Management: Sustainability And Supply Chain Management (13th Edition)
Ch. 17 - Prob. 1DQCh. 17 - Prob. 2DQCh. 17 - Prob. 3DQCh. 17 - Prob. 4DQCh. 17 - Prob. 5DQCh. 17 - Prob. 6DQCh. 17 - Prob. 7DQCh. 17 - Prob. 8DQCh. 17 - Prob. 9DQCh. 17 - Prob. 10DQ
Ch. 17 - Prob. 1PCh. 17 - Prob. 2PCh. 17 - Prob. 18PCh. 17 - Prob. 19PCh. 17 - Prob. 3PCh. 17 - Prob. 4PCh. 17 - Prob. 5PCh. 17 - Prob. 6PCh. 17 - Prob. 7PCh. 17 - Prob. 8PCh. 17 - Prob. 9PCh. 17 - Prob. 10PCh. 17 - Prob. 11PCh. 17 - Prob. 12PCh. 17 - Prob. 20PCh. 17 - Prob. 13PCh. 17 - Prob. 21PCh. 17 - Prob. 14PCh. 17 - Prob. 15PCh. 17 - Prob. 16PCh. 17 - Prob. 17PCh. 17 - Prob. 22PCh. 17 - Prob. 1.1VCCh. 17 - Prob. 1.2VCCh. 17 - Prob. 1.3VC
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- Question 2: I. What do you understand by six-sigma? II. What are the functions of six-sigma in reliability engineering? III. ICOV meant what?arrow_forwardQuestion 1(b) I. List the steps involved in developing the house of quality. II. Briefly explain the reliability tasks in generic reliability program.arrow_forwardQuestion 9 Quality impacts: O Product design O The supplier O Maintenance O The customer O All are truearrow_forward
- Question 11 The primary focus of quality is: O Maintenance O The product O The customer O Manufacturingarrow_forwardQUESTION 3ISO 14000 certificate is a requirement for a business to enter the international market with its products. Discuss the steps that an organization has to go through to acquire an ISO 14000 certificate.arrow_forwardQuestion 8 How can a researcher differentiate between reliability and validity?arrow_forward
- Question 3 In model M/M/ s =4 / FCFS / 0 / 00, with A = 3, and u = 10 the P(j 2s) is? O a. PU 2s) = 0.03 O b. PU 25) = 0.00 O C. P( 2s) = 0.5 O d. Pj 25) = 4arrow_forwardQuestion 10 (4 points) Which of these is NOT one of the main steps of managerial processes in QMS (based on Juran's Trilogy): Quality cost Quality improvement Quality planning Quality controlarrow_forwardQuestion 3 For better quality audits, auditors are to obtain an appropriate level of knowledge of the business before commencing the audit process. Required: In your own words, explain why an auditor is required to obtain a good understanding of the client's business. ANSWER:arrow_forward
- Question Help Kimpel Products makes pizza ovens for commercial use. James Kimpel, CEO, is contemplating producing smaller ovens for use in high school and college kitchens. The activities necessary to build an experimental model and related data are listed in the following table: Total Cost Normal Time Crash Time Normal with Immediate Activity (weeks) (weeks) Cost Crashing Predecessor(s) $1,400 $2,000 $2,100 $2,800 A 3 2. 1 C 1 $300 $300 A $1,400 $900 $1,680 $1,050 $5,750 D 7 E $4,250 $1,800 F 1 G 4 $2,300 D, E weeks. a) Based on the given information regarding the activities for the project, the project completion date = b) To reduce the duration of the project to 10 weeks at the least cost, the following is the order of what needs to be followed while crashing the activities: The first activity to crash is by 2 weeks at a per week crashing cost of dollars. Next, one should crash activity D and activity by 2 weeks for an additional total per week crashing cost of dollars. c) New…arrow_forwardQuestion 25 VQA stands for: O Village, Quality, Allegiance O Vintners Quality Alliance O Variation, Quality, Association O Vintners Quality Assurancearrow_forwardQuestion 6 Flu Shot Dosage A hospital in a developing nation is forced to manually put the flu shot vaccine into syringes. The recommended dosage for the flu shot is 0.5mL. The local health authorities define all syringes that have less than 0.45ml or more than 0.55mL as defective. In a sample of 100 syringes, the hospital’s quality control officer finds the average dosage to be 0.5mL. The standard deviation of the dosage is 0.02 mL and the distribution of the dosages resembles a normal distribution reasonably closely. What percentage of the manually filled syringes will be outside the specification limits provided by the local health authorities? (Please answer in decimal form.)arrow_forward
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