Practical Operations Management
2nd Edition
ISBN: 9781939297136
Author: Simpson
Publisher: HERCHER PUBLISHING,INCORPORATED
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Question
Chapter 6, Problem 20P
Summary Introduction
Interpretation: Balance delay when assembly line is 65% efficient is to be calculated.
Concept Introduction: An assembly line is a sequence of work in which an output is produced by adding inputs to semi-finished goods which moves from work station to another work station.
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Students have asked these similar questions
An assembly line is to be designed to operate 7½ hours per day and supply a steady demand of 300 units per day. Here are the tasks and their performance times:
TASK
PRECEDING TASKS
PERFORMANCETIME (SECONDS)
A
—
70
B
—
40
C
—
45
D
A
10
E
B
30
F
C
20
G
D
60
H
E
50
I
F
15
J
G
25
K
H, I
20
L
J, K
25
What is the workstation cycle time required to meet the desired output rate?
What is the theoretical minimum number of workstations required to meet the desired output rate?
Note: Round up your answer to the next whole number.
Assign tasks to workstations using the longest operating time.
What is the efficiency of your line balance, assuming it is running at the cycle time determined in part b?
Note: Round your answer to 1 decimal place.
Suppose demand increases by 10 percent. How would you react to this? Assume that you can operate only 71/2 hours per day.
Note: Round your answer for cycle time down to the nearest whole number. Round your…
Stanford Rosenberg Computing wants to establish an assembly line for producing a new product, the Personal Digital Assistant (PDA). The tasks, task times, and immediate predecessors for the tasks are as follows:
Task
Time
(sec)
Immediate Predecessor
A
11
−
B
15
A
C
7
A
D
4
B, C
E
20
D
Rosenberg's goal is to produce
170
PDAs per hour.
a) The cycle time for the production of a PDA =
enter your response here
seconds (round your response to two decimal places).
b) The theoretical minimum number of workstations that Rosenberg can achieve in this assembly
line=enter your response here
(round your response up to the next whole number).
c) For one to assign the tasks to the actual workstations and be able to use the "theoretical minimum" number, the activity assignment should be:
Workstation #
Tasks Assigned to…
Management wants to design an assembly line that will turn out 800videotapes per day. There will be eight working hours in each day. The industrial engineeringstaff has assembled the information below:
Task
Time (min.)
Immediate Follower
a
.2
b,d
b
.2
f
c
.4
b,e
d
.1
e
e
.3
f
f
.2
h
g
.1
h
h
.2
i
i
.6
none
A) Determine the optimum cycle time (i.e., actual operating time/desired output).B) What is the minimum number of stations needed?C) Assign tasks to work stations.D) What is the efficiency of this assembly line?
Chapter 6 Solutions
Practical Operations Management
Ch. 6 - Prob. 1DQCh. 6 - Prob. 2DQCh. 6 - Prob. 3DQCh. 6 - Prob. 4DQCh. 6 - Prob. 5DQCh. 6 - Prob. 1PCh. 6 - Prob. 2PCh. 6 - Prob. 3PCh. 6 - Prob. 4PCh. 6 - Prob. 5P
Ch. 6 - Prob. 6PCh. 6 - Prob. 7PCh. 6 - Prob. 8PCh. 6 - Prob. 9PCh. 6 - Prob. 10PCh. 6 - Prob. 11PCh. 6 - Prob. 12PCh. 6 - Prob. 13PCh. 6 - Prob. 14PCh. 6 - Prob. 15PCh. 6 - Prob. 16PCh. 6 - Prob. 17PCh. 6 - Prob. 18PCh. 6 - Prob. 19PCh. 6 - Prob. 20PCh. 6 - Prob. 21PCh. 6 - Prob. 22PCh. 6 - Prob. 23PCh. 6 - Prob. 24PCh. 6 - Prob. 25PCh. 6 - Prob. 26PCh. 6 - Prob. 27PCh. 6 - Prob. 28PCh. 6 - Prob. 29PCh. 6 - Prob. 30PCh. 6 - Prob. 31PCh. 6 - Prob. 32PCh. 6 - Prob. 1.1QCh. 6 - Prob. 1.2QCh. 6 - Prob. 1.3QCh. 6 - Prob. 1.4QCh. 6 - Prob. 2.1QCh. 6 - Prob. 2.2QCh. 6 - Prob. 2.3QCh. 6 - Prob. 3.1QCh. 6 - Prob. 3.2QCh. 6 - Prob. 3.3Q
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