Practical Operations Management
2nd Edition
ISBN: 9781939297136
Author: Simpson
Publisher: HERCHER PUBLISHING,INCORPORATED
expand_more
expand_more
format_list_bulleted
Question
Chapter 6, Problem 1.2Q
Summary Introduction
Case Summary:
An electronic company BT has just now given the contract to supply electronic equipment to the large electronic manufacturer. To fulfill the huge demand, the company BT has to set up a different assembly line to produce electronic equipment at a rate of 300 units per hour.
Interpretation:
Mapping of the assembly line for the given case using the longest process time (LPT) along with using the task name to break any ties under the LPT rules by choosing that task that will come first in alphabetical/numerical order the tasks and the workstations where each task will be accomplished.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solutionStudents have asked these similar questions
Francis Johnson’s plant needs to design an efficient assembly line to make a new product. The assembly line needs to produce 15 units per hour, and there is room for only four workstations. The tasks and the order in which they must be performed are shown in the following table. Tasks cannot be split, and it would be too expensive to duplicate any task.
TASK
TASK TIME (MINUTES)
IMMEDIATE PREDECESSOR
A
1
—
B
2
—
C
3
—
D
1
A, B, C
E
3
C
F
2
E
G
3
E
What is the workstation cycle time required to produce 15 units per hour?
Note: Round your answer to 1 decimal place.
Balance the line to use the fewest possible workstations to meet the cycle time found in part (b). Use whatever method you feel is appropriate. What is the efficiency of your line balance, assuming the line operates at the cycle time from part (b)?
Note: Round your answer to 1 decimal place.
Francis Johnson's plant needs to design an efficient assembly line to make a new product. The assembly line needs to produce 15
units per hour, and there is room for only five workstations. The tasks and the order in which they must be performed are shown in th
following table. Tasks cannot be split, and it would be too expensive to duplicate any task.
TASK TIME
(MINUTES)
IMMEDIATE
PREDECESSOR
rint
TASK
A
2.0
B
2.0
3.0
1.0
А, В, с
3.0
2.0
G
3.0
b. What is the workstation cycle time required to produce 15 units per hour? (Round your answer to 1 decimal place.)
Workstation cycle time
minutes
d. Balance the line to use the fewest possible workstations to meet the cycle time found in part b. Use whatever method you feel is
appropriate. What is the efficiency of your line balance, assuming the line operates at the cycle time from part b? (Round your answer
to 1 decimal place.)
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 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
Knowledge Booster
Similar questions
- Define Repetitive Processing: Product Layouts?arrow_forwardImprove the given string diagram by rearranging the work station.arrow_forwardAn assembly line is to operate eight hours per day with a desired output of 200 units per day. The following table contains information on this product’s task times and precedence relationships: TASK TASK TIME(SECONDS) IMMEDIATEPREDECESSOR A 60 — B 60 A C 50 A D 70 A E 30 B, C F 110 C, D G 70 E, F H 70 G b. What is the required workstation cycle time to meet the desired output rate? (Round your answer to the nearest whole number.) c. Balance this line using the longest task time. (Leave no cells blank - be certain to enter "0" wherever required.) d. What is the efficiency of your line balance, assuming it is running at the cycle time determined in part b? (Round your answer to 1 decimal place.)arrow_forward
- Nonrepetitive Processing: Process Layoutsarrow_forwardd. What is the efficiency of your line balance? Use the theoretical minimum number of workstations in your calculation. (Round your answer to 1 decimal place.) Efficiencyarrow_forwardThe table below shows the time for each work element in an manual assembly process, along with the predecessor(s) required for each element. The ideal cycle time is 1.4 minutes, the repositioning time is 0.1 minutes, and there is one worker at each station. Work element A B C D E F G H I J Time (minutes) 0.7 0.4 0.2 0.3 0.5 0.4 0.6 0.5 0.3 0.2 Immediate predecessors - A A B B C E,F D,E G,H I 1. Using the ranked positional weights method, assign work elements to stations.arrow_forward
- A production schedule requires six work stations. However, there are nine work tasks to be performed to produce a unit of output. The warchouse is operated for seven days a week and three 8-hour shifts per day. The desired output per week is 1.728 units. The tasks, precedence relationships and the approximate amount of time required to carry out cach task is presented below. Use this information to answer questions 62 - 69 Task 1. Duration (min) 5.0 Immediate Preceding Task 3 4 4.5 2.0 3.0 3.5 2,3 4,5 1.5 2.5 7. 4.8 2.5 62. What is the available time for production in minutes? (a) 1260 (b) 1440 (c) 3,360 (d) 10080 63. The required cycle time for this operation is: (а) 2.58 (b) 5.83 (c) 7.25 (d) 9.42 64. Which activity or set of activities should be assigned to station 2? (a) 2 only (b) I and 2 (c) 3 only (d) 3 and 4 65. Which activity or set of activities should be assigned to station 4? (a) 3 only (b) 3 and 4 (c) 5 and 6 (d) 7 only 66. Which activity or set of activities should be…arrow_forwardAn assembly line is to operate eight hours per day with a desired output of 250 units per day. The following table contains information on this product’s task times and precedence relationships: TASK TASK TIME (SECONDS) IMMEDIATE PREDECESSOR A 50 — B 20 A C 25 A D 35 A E 60 B, C F 60 C, D G 50 E, F H 90 G What is the required workstation cycle time to meet the desired output rate? Note: Round your answer to the nearest whole number. Balance this line using the longest task time. Note: Leave no cells blank - be certain to enter "0" wherever required. 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.arrow_forwarddefine the workflow design concept. Additionally, it discusses how an optimal design of a production system influences employee efficiency, waste reduction, and bottleneck avoidance. Explain each of the following production processes:Project or tasklotsProduction linesContinuous flow or process and mass productionarrow_forward
- Given the following task, times, and sequence, develop a balanced line capable of operating with a I 0-minute cycle time at Dave Visser's company. a) Draw the precedence diagram.b) Assign tasks to the minimum feasible number of workstations according to the greatest time remaining (ranked positional weight) decision rule.c) What is the efficiency of the process?arrow_forwardWhat general trade-offs are involved in sequencing decisions? In scheduling decisions?arrow_forwardWaldorf Astoria Spa & Health Club at Waldorf Astoria Chicago offers high-quality hair-styling and physical relaxation services at a reasonable price, so it always has unlimited demand. The process comprised of five tasks that are completed in the sequence described below. (The time required for each task is shown in parenthesis). Task 1: Welcome a guest and offer homemade herb tea (10 minutes) Task 2: Wash and condition hair (10 minutes) Task 3: Neck, shoulder, and back stress release massage (10 minutes) Task 4: Design the hairstyle and do the hair (25 minutes) Task 5: Check out the guest (5 minutes) Three servers (S1, S2, and S3) offer the services in a worker-paced line. The assignment of tasks to servers is the following: S1 completes Task 1. S2 completes Tasks 2 and 3. S3 completes Tasks 4 and 5. Assume a wage rate of $18 per hour. What are the direct labor costs for one guest?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,
Practical Management Science
Operations Management
ISBN:9781337406659
Author:WINSTON, Wayne L.
Publisher:Cengage,