Concept explainers
A producer of inkjet printer is planning to add a new line of printers, and you have been asked to balance the process, given the following task time and precedence relationship. Assume that cycle time is to be the minimum possible.
a. Do each of the following:
(1) Draw the precedence diagram.
(2) Assign tasks to stations in order of most following tasks. Tiebreaker, greatest positional weight.
(3) Determine the percentage of idle time.
(4) Compute the late of output in printers per day that could be expected for that line assuming a 420-minute working day.
b. Answer these questions:
(1) What it the shortest cycle tone that will permit use of only two workstations? Is this cycle time feasible? Identify the tasks you would assign to each station.
(2) Determine the percentage of idle time that would results if two stations were used.
(3) What is the daily output under this arrangement?
(4) Determine the output rate that would be associated with the maximum cycle time.
![Check Mark](/static/check-mark.png)
Want to see the full answer?
Check out a sample textbook solution![Blurred answer](/static/blurred-answer.jpg)
Chapter 6 Solutions
Operations Management
- Find the value of X in the following Flow Shop data consisting of 5 jobs which are to be processed on two machines M1 & M2 in that order. M2 Jobs A 7 B 5 C D E M1 5 2 1 4 13 3 6 3 For the sequence using Johnson's Rule, the Average Flow Time Xarrow_forwardSue Helms Appliances wants to establish an assem-bly line to manufacture its new product, the Micro Popcorn Popper. The goal is to produce five poppers per hour. The tasks,task times, and immediate predecessors for producing one MicroPopcorn Popper are as follows:TASK TIME (min) IMMEDIATEPREDECESSORSA 10 —B 12 AC 8 A, BD 6 B, CE 6 CF 6 D, Ea) What is the theoretical minimum for the smallest number ofworkstations that Helms can achieve in this assembly line?b) Graph the assembly line, and assign workers to workstations.Can you assign them with the theoretical minimum?c) What is the efficiency of your assignment?arrow_forwardConsider the following three-station production line with a single product that must visit stations 1, 2, and 3 in sequence: a) Calculate the bottleneck rate, the raw process time, and the critical WIP. Bottleneck rate (Provide to 3 decimals): Raw process time b) Critical WIP: (Provide to 2 decimalsarrow_forward
- As the Cottrell Bicycle Co. of St. Louis completes plans for its new assembly line, it identifies 25 different tasksin the production process. VP of Operations Jonathan Cottrell now faces the job of balancing the line. He lists precedencesand provides time estimates for each step based on work-sampling techniques. His goal is to produce 1,000 bicycles perstandard 40-hour workweek.Balance this operation using the shortest operation time rule and compute the efficiency of the line.arrow_forwardb. In order of greatest positional weight. Tiebreaker: most following tasks. (Use your rounded cycle time. Enter your tasks in the order they were assigned at each station as a letter between a and h in lowercase with no other text or symbols. Round your numerical answers to 1 decimal place.) Time Work Station Task Task Time Remaining II II IV What is Efficiency? (Use your rounded cycle time in the denominator of your efficiency calculation. Round your answer to 1 decimal place.) 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
- The tasks shown in the following precedence diagram are to be assigned to workstations with theintent of minimizing idle time. Management has designed an output rate of 275 units per day. Assume440 minutes are available per day.a. Determine the appropriate cycle time.b. What is the minimum number of stations possible?arrow_forwardA company is setting up an assembly line to produce 90 units per hour. The table below identifies the work elements, times, and immediate predecessors. Work Element Time (Sec.) Immediate Predecessor(s) A 25 - B 18 A C 20 A D 5 B, C E 12 C F 8 E G 16 D, F H 12 G What cycle time is required to satisfy the required output? What is the theoretical minimum number of stations?arrow_forwardGiven the following information, assign tasks to work stations using the most followers rule. Assume the cycle time is 60 seconds and the minimum number of workstations is 3. Submit for each workstation (1,2,3,4 etc.), the tasks assigned in order of assignment, the idle time for each work station and the total idle time. (It will help for you to make the diagram but you are not required to submit the diagram) Task A D w Immediate Predecessor D CE Task Time (seconds) 35 50 20 10 25 40arrow_forward
- Three departments- milling (M), drilling (D), andsawing (S)- are assigned to three work areas in Victor Berardis'smachine shop in Kent, Ohio. The number of workpieces movedper day and the distances between the centers of the work areas,in feet, follow. Pieces Moved between Work Areas Each Day lt costs $2 to move I workpiece I foot.What is the cost?arrow_forwardArrange the eight departments shown in the accompanying Muther grid into a 2 × 4 format. Note: Department 1 must be in the location shown.arrow_forwardA Manufacturing Corp. with three-station work cell has the process displayed below. Each workstation has only one worker to the assigned activity. Single order arrives every 7.5 hours. c) What is the cycle time corresponding to maximum throughput and actual throughput?d) Suppose that a second parallel machine is added at station 2. What is the new bottleneck timeand new throughput time of the system? How did the addition of the second machine at workstation 2 affect the performance of the work cell?arrow_forward
- Practical Management ScienceOperations ManagementISBN:9781337406659Author:WINSTON, Wayne L.Publisher:Cengage,
![Text book image](https://www.bartleby.com/isbn_cover_images/9781337406659/9781337406659_smallCoverImage.gif)