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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Chapter 9, Problem 22P
The preinduction physical examination given by the U.S. Army involves the following seven activities:
| ACTIVITY | AVERAGE TIME (MIN) |
| Medical history | 10 |
| Blood tests | 8 |
| Eye examination | 5 |
| Measurements (e.g., weight, height, blood pressure) | 7 |
| Medical examination | 16 |
| Psychological interview | 12 |
| Exit medical evaluation | 10 |
These activities can be performed in any order, with two exceptions: Medical history must be taken first, and Exit medical evaluation is last at present, there are three paramedics and two physicians on duty during each shift. Only physicians can perform exit evaluations and conduct psychological interviews. Other activities can be carried out by either physicians or paramedics.
- a. Develop a layout and balance the line.
- b. How many people can be processed per hour?
- c. Which activity accounts for the current bottleneck?
- d. What is the total idle time per cycle?
- e. If one more physician and one more paramedic can be placed on duty, how would you redraw the layout? What is the new throughput?
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Twelve tasks, with times and precedence requirements as shown in the following table, are tobe assigned to workstations using a cycle time of 1.5 minutes. Two heuristic rules will be tried:(1) greatest positional weight, and (2) most following tasks.In each case, the tiebreaker will be shortest processing time.
TaskLength(minutes)ImmediatePredecessora 0.1 —b 0.2 ac 0.9 bd 0.6 ce 0.1 —f 0.2 d, eg 0.4 fh 0.1 gi 0.2 hj 0.7 ik 0.3 jl 0.2 k
a. Draw the precedence diagram for this line.b. Assign tasks to stations under each of the two rules.c. Compute the percentage of idle time for each rule
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As part of a major plant renovation project, the industrial engineering department has been asked to balance a revised assembly operation to achieve an output of 240 units per eight-hour day. Task times and precedence relationships are as follows:
Task
Duration(minutes)
ImmediatePredecessor
a
0.2
-
b
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a
c
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b
d
0.4
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e
1.2
d
f
1.2
c
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Click here for the Excel Data File
Do each of the following: a. Determine the minimum cycle time, the maximum cycle time, and the calculated cycle time. (Round your answers to 1 decimal place.)
b. Determine the minimum number of stations needed. (Round your answer to the next whole number.)
c. Assign tasks to workstations on the basis of greatest number of following tasks. Use longest processing time as a tiebreaker. If ties still exist, assume indifference in choice.
d. Compute the percentage of idle time for the assignment in part d. Use the actual bottleneck cycle time in your calculation.…
Chapter 9 Solutions
Mylab Operations Management With Pearson Etext -- Access Card -- For Operations Management: Sustainability And Supply Chain Management (13th Edition)
Ch. 9 - Prob. 1EDCh. 9 - Prob. 1DQCh. 9 - Prob. 2DQCh. 9 - Prob. 3DQCh. 9 - Prob. 4DQCh. 9 - Prob. 5DQCh. 9 - Prob. 6DQCh. 9 - Prob. 7DQCh. 9 - Prob. 8DQCh. 9 - What are the requirements for a focused work...
Ch. 9 - Prob. 10DQCh. 9 - Prob. 11DQCh. 9 - Prob. 12DQCh. 9 - Prob. 13DQCh. 9 - Prob. 14DQCh. 9 - Prob. 15DQCh. 9 - Prob. 16DQCh. 9 - Explain the concept of cross-docking.Ch. 9 - What is a heuristic? Name several that can be used...Ch. 9 - Prob. 1PCh. 9 - Prob. 2PCh. 9 - Three departmentsmilling (M), drilling (D), and...Ch. 9 - Roy Creasey Enterprises, a machine shop, is...Ch. 9 - Prob. 5PCh. 9 - Prob. 6PCh. 9 - Prob. 7PCh. 9 - Six processes are to be laid out in six areas...Ch. 9 - Stanford Rosenberg Computing wants to establish an...Ch. 9 - Illinois Furniture, Inc., produces all types of...Ch. 9 - Sue Helms Appliances wants to establish an...Ch. 9 - The Action Toy Company has decided to manufacture...Ch. 9 - The following table details the tasks required for...Ch. 9 - Tailwind, Inc., produces high-quality but...Ch. 9 - Prob. 18PCh. 9 - Because of the expected high demand for Mach 10,...Ch. 9 - Prob. 20PCh. 9 - Suppose production requirements in Solved Problem...Ch. 9 - The preinduction physical examination given by the...Ch. 9 - Samuel Smith's company wants to establish an...Ch. 9 - Prob. 8PCh. 9 - Prob. 9PCh. 9 - Prob. 25PCh. 9 - Prob. 26PCh. 9 - Prob. 27PCh. 9 - Prob. 1CSCh. 9 - Prob. 2CSCh. 9 - Prob. 3CSCh. 9 - Prob. 4CSCh. 9 - Prob. 1.1VCCh. 9 - Prob. 1.2VCCh. 9 - Prob. 1.3VCCh. 9 - Prob. 1.4VCCh. 9 - Prob. 1.5VCCh. 9 - Prob. 1.6VCCh. 9 - Prob. 2.1VCCh. 9 - Prob. 2.2VCCh. 9 - Prob. 2.3VC
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