Operations Management: Processes and Supply Chains, Student Value Edition Plus MyLab Operations Management with Pearson eText -- Access Card Package (12th Edition)
12th Edition
ISBN: 9780134855424
Author: Lee J. Krajewski, Manoj K. Malhotra, Larry P. Ritzman
Publisher: PEARSON
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Textbook Question
Chapter 5, Problem 14P
Use the longest work element rule to balance the assembly line described in the following table and Figure 5.16 so that it will produce 40 units per hour.
- What is the cycle time?
- What is the theoretical minimum number of workstations?
- Which work elements are assigned to each workstation?
- What are the resulting efficiency and balance delay percentages?
- Use the shortest work element rule to balance the assembly line. Do you note any changes in solution?
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Use the longest work element rule to balance the assembly line described in the following table and Figure so that it will produce 40 units per hour.a. What is the cycle time?b. What is the theoretical minimum number of workstations?c. Which work elements are assigned to each workstation?d. What are the resulting efficiency and balance delay percentages?e. Use the shortest work element rule to balance the assembly line. Do you note any changes in solution?
Work Element
Time (Sec)
Immediate Predecessor(s)
A
B
C
D
E
F
G
H
I
J
K
40
80
30
25
20
15
60
45
10
75
15
None
A
A
B
C
B
B
D
E,G
F
H,I,J
A company needs to rebalance a product layout for producing new plastic license plates. They plan to use the assembly line six hours in order to meet projected demand of 2,160 license plates each day. The following table describes the tasks involved in the production of this product:
Without regard to projected demand, what is the maximum possible cycle time for this assembly line?
Task
Time (secs)
Immediate Predecessor
a
3
none
b
4
none
c
5
a,b
d
7
none
e
9
c,d
Management wants to design an assembly line that will turn out 800 videotapes per day. There will be eight working hours in each day. The industrial engineering staff has assembled the information below: A) Determine the maximum and minimum cycle times.B) Determine the optimum cycle time.C) What is the minimum number of stations needed?D) Draw the precedence diagram.E) Assign tasks to stations in order of most following tasks first. Submit an Excel file based on Chapter 6 Excel Template to indicate your computation.
Chapter 5 Solutions
Operations Management: Processes and Supply Chains, Student Value Edition Plus MyLab Operations Management with Pearson eText -- Access Card Package (12th Edition)
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