EBK OM
6th Edition
ISBN: 9781305888210
Author: Collier
Publisher: YUZU
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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…
The following tasks are to be performed on an assembly line:
TASK
SECONDS
TASKS THAT MUST PRECEDE
A
20
—
B
7
A
C
20
B
D
22
B
E
15
C
F
10
D
G
16
E, F
H
8
G
The workday is seven hours long. The demand for completed product is 750 per day.
Find the cycle time required to meet the desired output rate.
Note: Round your answer to 1 decimal place.
What is the theoretical number of workstations required to meet the desired output rate?
Note: Round up your answer to the next whole number.
Balance the line using sequential restrictions and the longest-operating-time rule. Determine the task under each workstation and the idle time for each such task.
Note: Round your answers to 1 decimal place.
What is the efficiency of the line balanced as in part (d) assuming it is running at the cycle time determined in part (a)?
Note: Round your answer to 1 decimal place.
Suppose that demand rose from 750 to 800 units per day. Determine the cycle time. (Use the…
An assembly line with 17 tasks is to be balanced. The longest task is 2.2 minutes and the total time for all tasks is 19 minutes. The line will operate for 460 minutes per day.
A) What is the minimum number of workstations needed if the output rate is to be 186 units per day?
B)- What cycle time will provide an output rate of 142 units per day?
C) What output will result if the cycle time is (I) 9 minutes and (II) 14 minutes?
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Similar questions
- A 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 company needs to rebalance a product layout for producing sweet sour lollipop wrap. They plan to use the assembly line for an output rate of 4 units per minute each day. The following table describes the tasks involved in the production of this product: Work Element Time (seconds) Immediate Predecessor(s) A 12 -- B 6 A C 8 A D 4 B E 7 B, C F 10 E G 6 D, F Determine how many stations are required for the line to produce the desired output. Select one: A. 5.0 workstations B. 4.0 workstations C. 3.0 workstations D. 3.5 workstations E. 4.5 workstationsarrow_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 2.1 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
- 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?arrow_forwardGordon Miller's job shop has four work areas, A, B, C, and D. Distances in feet between centers of the work areas are: A B C D A − 4 10 8 B − − 5 9 C − − − 9 D − − − − Workpieces moved per week between work areas are: A B C D A − 900 700 600 B − − 400 300 C − − − 600 D − − − − It costs Gordon $3 to move 1 work piece 1 foot. The weekly total material handling cost of the layout =....... $nothing (enter your response as a whole number). The weekly total material handling cost of the layout =....... nothing dollars (enter your response as a whole number).arrow_forward(3) The following information is given about an assembly line. The desired output rate is 360 units per 8-hour day. 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 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.arrow_forward
- An 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_forwardThe Sail-Sea is a boat manufacturer. The assembly location is available for production of 60 boats for240 minutes per day.Given the information in the table,c) What is the efficiency of the assembly lined) What is the idle time per boat producede) Assign the tasks to workstations using the most follower methodf) What is the maximum theoretical capacity this line can achieve in 240 minutes task performance time(min) task must follow task listed below a 1 - b 1 a c 2 a d 1 c e 3 c f 1 c g d, e, f h 2 b i 1 g, harrow_forwardThe maker of the world-famous Chocolate Chip Cookies needs to design a product layout for a new product, Mint Chocolate Chip. The company plans to use this new production line eight hours a day in order to meet projected demand of 1,440 cases per day. The following table describes the tasks involved in the production of a case of Mint Chocolate Chip Cookies. 27 seconds 0.3333 seconds 18 seconds 14 seconds 56 seconds 20 secondsarrow_forward
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