Principles of Operations Management: Sustainability and Supply Chain Management (10th Edition)
10th Edition
ISBN: 9780134181981
Author: Jay Heizer, Barry Render, Chuck Munson
Publisher: PEARSON
expand_more
expand_more
format_list_bulleted
Question
Chapter 9, Problem 20P
a)
Summary Introduction
To draw: The precedence diagram.
b)
Summary Introduction
To determine: The cycle time.
Introduction:
Cycle time:
Cycle time is the total time taken to complete an unit of work from the beginning of the process to the end of the process.
c)
Summary Introduction
To determine: The production rate.
d)
Summary Introduction
To determine: The theoretical minimum number of workstations.
e)
Summary Introduction
To determine: The efficiency.
Introduction:
Efficiency:
Efficiency is the measure of what is actually produced as opposed to what can be theoretically produced with the same amount of resources.
f)
Summary Introduction
To determine: The total idle time per cycle.
g)
Summary Introduction
To assign: The different tasks to different workstations and identify the efficiency.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solutionStudents have asked these similar questions
Suppose the times for the individual operations for the in-line skate assembly are as follows:
Â
Task
Description
Time (sec)
1
Assemble wheels, bearings, and axle hardware
11
2
Assemble brake housing and pad
8
3
Complete wheel assembly
20
4
Inspect wheel assembly
13
5
Assemble boot
18
6
Join boot and wheel subassemblies
7
7
Add line and final assembly
10
8
Perform final inspection
10
Â
Â
Consider the production line achieving an output rate of 180 per hour below. Using the proposed design, calculate the total time and idle time for each workstation. If your answer is zero, enter "0". Round your answers to the nearest whole number.
Â
Â
Station
Tasks
Total Time, seconds
Idle Time, seconds
A
1 and 2
Â
Â
B
3
Â
Â
C
5
Â
Â
D
4 and 6
Â
Â
E
7 and 8
Â
Â
Â
Total
Â
Â
Â
What is the assembly line efficiency? Round your answer to one decimal place.
 %
(3)
The following information is given about an assembly line. The desired output rate is 360 units per 8-hour day.
Â
Task
Time (sec)
Immediate Predecessor(s)
A
30
-
B
25
A
C
40
A, B
D
45
B
E
25
B
F
28
C, E
G
16
D
H
40
F, G
Â
a. How many stations are required for the most efficient balance you can achieve?
b. Balance the line according to the most following tasks rule.
c. What is the idle time per unit for your solution?
d. Identify the bottleneck for your solution.
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?
Â
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.
Â
Assign tasks to workstations using the longest operating time.
Â
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.
Â
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…
Chapter 9 Solutions
Principles of Operations Management: Sustainability and Supply Chain Management (10th 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 - Prob. 9DQ
Ch. 9 - Prob. 10DQCh. 9 - Prob. 11DQCh. 9 - Prob. 12DQCh. 9 - Prob. 13DQCh. 9 - Prob. 14DQCh. 9 - Prob. 15DQCh. 9 - Prob. 16DQCh. 9 - Prob. 17DQCh. 9 - Prob. 18DQCh. 9 - Prob. 1PCh. 9 - Prob. 2PCh. 9 - Prob. 3PCh. 9 - Roy Creasey Enterprises, a machine shop, is...Ch. 9 - Adam Munson Manufacturing, in Gainesville,...Ch. 9 - Prob. 6PCh. 9 - Prob. 7PCh. 9 - Prob. 8PCh. 9 - Six processes are to be laid out in six areas...Ch. 9 - Prob. 11PCh. 9 - Stanford Rosenberg Computing wants to establish an...Ch. 9 - Illinois Furniture, Inc., produces all types of...Ch. 9 - Prob. 14PCh. 9 - The Action Toy Company has decided to manufacture...Ch. 9 - Prob. 16PCh. 9 - Prob. 17PCh. 9 - Prob. 18PCh. 9 - Prob. 19PCh. 9 - Prob. 20PCh. 9 - Prob. 21PCh. 9 - Prob. 22PCh. 9 - Prob. 23PCh. 9 - Prob. 1CSCh. 9 - Prob. 2CSCh. 9 - Henry Coupe, the manager of a metropolitan branch...Ch. 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
Knowledge Booster
Similar questions
- 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?arrow_forwardManagement 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: Task a Time (min. .2 .2 .4 .1 .3 .2 .1 .2 Immediate Predecessor none a none none c, d be none £ g (A) Determine the maximum and minimum cycle time. (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.arrow_forward. Name two unethical behaviors related to process selection and two related to layout, and the ethicalprinciples they violate (see Chapter 1)arrow_forward
- 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.arrow_forwardDr. 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 tasks for the production of the instrument are: Task Time (minutes) Predecessors A 3 ---- B 6 ---- C 7 A D 5 A, B E 2 B F 4 C G 5 F H 7 D, E I 1 H J 6 E K 4 G, I, J Draw the precedence diagram If the daily production (24-hour) production rate is 96 units, what is the highest allowable cycle time? If the cycle time after allowances is given as 12 minutes, what is the daily (24-hour) production rate? With a 12-minute cycle time, what is the theoretical minimum number of stations with which the line can be balanced? Assign task to workstations.  Use the following decision rules (heuristics): longest task first, break ties by assigning the task with the most followers. What are the efficiency and the balance delay of the assembly line? Show detil of…arrow_forwardStanford 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 12  − B 15  A C 7  A D 5  ​B, C E 18  D  ​Rosenberg's goal is to produce 170 PDAs per hour. Part 2 ​a) The cycle time for the production of a PDA​ = enter your response here seconds ​(round your response to two decimal​ places).arrow_forward
- The preinduction physical examination given by the i U.S. Army involves the following seven activities:                                                                                                                                                                                                       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 performexit evaluations and conduct psychological in terviews. 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?arrow_forwardA 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?arrow_forwardDr. 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?arrow_forward
- In what ways does technology have an impact on process selection? How can technology impact layout decisions?arrow_forwardA paced assembly line has been devised to manufacture​ calculators, as the following data​ show:                                                                                                                           LOADING... Station Work Element Assigned Work Element Time​ (min) S1 A 4.0 S2 ​D, E 0.9​, 1.5 S3 C 5.0 S4 ​B, F, G 1.1​, 1.0​, 1.3 S5 ​H, I, J 1.1​, 0.5​, 1.8 S6 K 4.0 a. What is the maximum hourly output rate from this​ line? ​(Hint​: The line can only go as fast as its slowest​ workstation.)  The maximum hourly output rate is nothing calculators per hour. ​(Enter your response as an​ integer.) 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?arrow_forwardA small assembly line for the assembly of power steering pumps needs to be balanced. Precedence diagram is shown below.  The cycle time is determined to be 1.7 minutes. How would the line be balanced by choosing the assignable task having the longest task time first? Fill in the table below. If your answer is zero, enter "0". Round your answers to one decimal place.  Station Tasks Total Time Idle Time 1 B,A,C,D   2 E,F   3 G,H,I    Total   What is the assembly-line efficiency? Round your answer to one decimal place.  %arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
- Practical Management ScienceOperations ManagementISBN:9781337406659Author:WINSTON, Wayne L.Publisher:Cengage,Operations ManagementOperations ManagementISBN:9781259667473Author:William J StevensonPublisher:McGraw-Hill EducationOperations and Supply Chain Management (Mcgraw-hi...Operations ManagementISBN:9781259666100Author:F. Robert Jacobs, Richard B ChasePublisher:McGraw-Hill Education
- Purchasing and Supply Chain ManagementOperations ManagementISBN:9781285869681Author:Robert M. Monczka, Robert B. Handfield, Larry C. Giunipero, James L. PattersonPublisher:Cengage LearningProduction and Operations Analysis, Seventh Editi...Operations ManagementISBN:9781478623069Author:Steven Nahmias, Tava Lennon OlsenPublisher:Waveland Press, Inc.
Practical Management Science
Operations Management
ISBN:9781337406659
Author:WINSTON, Wayne L.
Publisher:Cengage,
Operations Management
Operations Management
ISBN:9781259667473
Author:William J Stevenson
Publisher:McGraw-Hill Education
Operations and Supply Chain Management (Mcgraw-hi...
Operations Management
ISBN:9781259666100
Author:F. Robert Jacobs, Richard B Chase
Publisher:McGraw-Hill Education
Purchasing and Supply Chain Management
Operations Management
ISBN:9781285869681
Author:Robert M. Monczka, Robert B. Handfield, Larry C. Giunipero, James L. Patterson
Publisher:Cengage Learning
Production and Operations Analysis, Seventh Editi...
Operations Management
ISBN:9781478623069
Author:Steven Nahmias, Tava Lennon Olsen
Publisher:Waveland Press, Inc.