Operations Management
11th Edition
ISBN: 9780132921145
Author: Jay Heizer
Publisher: PEARSON
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Question
Chapter 9, Problem 19P
a)
Summary Introduction
To draw: The precedence diagram.
b)
Summary Introduction
To calculate: The highest allowable cycle time.
c)
Summary Introduction
To calculate: The daily production rate.
d)
Summary Introduction
To calculate: The theoretical minimum number of workstations.
e)
Summary Introduction
To calculate: The efficiency.
f)
Summary Introduction
To calculate: The total idle time per cycle.
g)
Summary Introduction
To determine: The best workstation assignment to be made.
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Dr. Lori Baker, operations manager at Nesa Electro-nics, prides herself on excellent assembly-line balancing. She has
been told that the firm needs to complete 96 instruments per24-hour day. The assembly-line activities are:
TASK TIME (min) PREDECESSORSA 3 —B 6 —C 7 AD 5 A, BE 2 BF 4 CG 5 FH 7 D, EI 1 HJ 6 EK 4 G, I, J
50a) Draw the precedence diagram.b) If the daily (24-hour) production rate is 96 units, what is thehighest allowable cycle time?c) If the cycle time after allowances is given as 10 minutes, whatis the daily (24-hour) production rate?d) With a 10-minute cycle time, what is the theoretical minimumnumber of stations with which the line can be balanced?e) With a 10-minute cycle time and six workstations, what is theefficiency?f) What is the total idle time per cycle with a 10-minute cycletime and six workstations?g) What is the best workstation assignment you can makewithout exceeding a 10-minute cycle time, and what is itsefficiency?
Dr. Lori Baker, operations manager at Nesa Electronics, prides herself on excellent assembly-line balancing. She has
been told that the firm needs to complete 96 instruments per 24-hour day. The assembly-line activities ace:
Task
Time (min)
Predecessors
A
3
B
6
7
A
А, В
B
D
5
E
2
F
4
C
G
5
F
D,E
H
H
1
6
J
E
K
4
G, I, J
50
(e) With a 10-minute cycle time and six workstations, what is the efficiency?
(1) What is the total idle time per cycle with a 10-minute cycle time and six workstations?
(g) What is the best work station assignment you can make without exceeding a 10-minute cycle time and what is its
efficiency?
A paced assembly line has been devised to manufacture calculators, as the following data show:
Station
Work ElementAssigned
Work ElementTime (min)
S1
S2
S3
S4
S5
S6
A
D,E
C
B,F,G
H,I,J
K
2.7
0.6, 0.9
3.0
0.7, 0.7, 0.9
0.7, 0.3, 1.2
2.4
a. What is the maximum hourly output rate from this line? (Hint: The line can go only as fast as its slowest workstation.)b. What cycle time corresponds to this maximum output rate?c. If a worker is at each station and the line operates at this maximum output rate, how much idle time is lost during each 10-hour shift?d. What is the line’s efficiency?
Chapter 9 Solutions
Operations Management
Ch. 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. 10DQ
Ch. 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 - Prob. 8PCh. 9 - Six processes are to be laid out in six areas...Ch. 9 - After an extensive product analysis using group...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. 17PCh. 9 - Because of the expected high demand for Mach 10,...Ch. 9 - Prob. 19PCh. 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 - As the Cottrell Bicycle Co. of St. Louis completes...Ch. 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. 2.1VCCh. 9 - Prob. 2.2VCCh. 9 - Prob. 2.3VC
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