Operations Management
17th Edition
ISBN: 9781259142208
Author: CACHON, Gérard, Terwiesch, Christian
Publisher: Mcgraw-hill Education,
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Question
Chapter 5, Problem 16CQ
Summary Introduction
To identify: If the given statement is true or false.
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This is a step in a process that is the slowest compared tothe other steps. This step limits the capacity of the process.
The slowest point in a process is a ________.
Group of answer choices
Bottleneck
Lost production
Surplus
Throughput
Consider the following four-step assembly operation with quality problems. All resources are
staffed by one employee.
• The first resource has a processing time of 5 minutes per unit.
• The second resource has a processing time of 6 minutes per unit.
• The third resource has a processing time of 3 minutes per unit. With a 30 percent probability,
the flow unit coming out of the third resource has to be reworked. In that case, the operations at
the first, second, and third resources are repeated. You can assume that (a) rework always
succeeds (i.e., a unit going through the rework loop will always work after the third resource)
and (b) the processing times for units in rework are the same as for regular units.
• The fourth resource has a processing time of 4 minutes per unit.
With this information in hand, answer the following questions:
• What is the bottleneck process?
• What is the capacity of the process?
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, operations-management and related others by exploring similar questions and additional content below.Similar questions
- The bottleneck resource in a process has the least idle time. True or false?a. Trueb. Falsearrow_forwardBalancing a process with a fixed sequence of activities will achieve a higher average labor utilization than balancing a process with no fixed sequence of activities. True or False?arrow_forwardConsider the following four-step assembly operation with quality problems. All resources are staffed by one employee. . The first resource has a processing time of 5 minutes per unit. . The second resource has a processing time of 6 minutes per unit. . The third resource has a processing time of 3 minutes per unit. With a 30 percent probability, the flow unit coming out of the third resource has to be reworked. In that case, the operations at the first, second, and third resources are repeated. You can assume that (a) rework always succeeds (.e., a unit going through the rework loop will always work after the third resource) and (b) the processing times for units in rework are the same as for regular units. • The fourth resource has a processing time of 4 minutes per unit. a. Where in the process is the bottleneck? O Step 1 O Step 2 Step 3 Sten 4arrow_forward
- Clients are served in a process with two resources. The processing time of the first resource is 6 minutes. The processing time of the second resource is 6 minutes. The first resource has 9 worker and the second resource has 5 workers. The cycle time of the process is 11.8 minutes. Instruction: Round your answer to one decimal place. What is the average labor utilization (%)? percent ation CRook Airarrow_forwardThe ClickClock corporation produces clocks with six stations. Each station is manned by a human worker, who do the following tasks: These workers get paid $ 10 an hour. Ignore any Station Task Sequence Processing Time (secs) Task Heat-stake lens to bezel Inspect bezel Clean switch holes Install set switch in bezel Total time for A Check switch travel Clean inside bezel Install module in bezel Total time for B Install battery clip in module Heat-stake battery clip in module Install two batteries in module Check switch 14 2 26 A 3 10 Preparation 1 4 18 68 23 B 6 12 Preparation 2 7 25 60 8 20 9 20 Battery 10 22 Installation 11 8. Total time for C 70 Install band Inspect band Total time for D Cosmetic inspection Final test D 12 45 Band 13 13 Installation 58 E 14 4 Packaging 15 71 Preparation Total time for E 75 Place watch and cuff in display box Place cover in display box base 16 20 17 14 Watch 18 Place owner's manual and box into tub 30 packaging Total time for F 64arrow_forwardWhile designing a process, we try to ensure that unpleasant experiences such as filling forms or taking shots are located towards the beginning/middle, primarily because: O It is usually more convenient to complete such tasks early on None of the above We do not wish to end on an unpleasant note. The memory of unpleasant experiences stays much longer relative to other kinds of experiences. O The customer may refuse to do/participate in such unpleasant tasks at the end of the processarrow_forward
- Supervisor Tom Choi at Tempe Equipment Company is concerned that material is not arriving as promptly as needed at work cells. A new kanban system has been installed, but there seems to be some delay in getting the material moved to the work cells so that the job can begin promptly. Choi is interested in determining how much delay there is on the part of his highly paid machinists. Ideally, the delay would be close to zero. He has asked his assistant to determine the delay factor among his 10 work cells. The assistant collects the data on a random basis over the next 2 weeks and deter- mines that of the 1,200 observations, 105 were made while the oper- ators were waiting for materials. Use a 95% confidence level and a {3% acceptable error. What report does he give to Choi?arrow_forwardCustomers are served in a two-step process with two resources. The processing times for the resources are 0.83 hours and 0.35 hours. Instruction: Do not round intermediate calculations. Round your answer to two decimal places. How long does it take 5 customers to be served (in hours)? hoursarrow_forwardDrivers are trained in a process with two resources. A worker in the first resource trains 0.028 drivers per hour and a worker in the second resource trains 0.014 drivers per hour. The first resource has 4 workers and the second resource has 7 workers. Demand occurs at the rate 0.09 drivers per hour. Instruction: Round your answer to one decimal place. What is the implied utilization (%) of the second resource? %arrow_forward
- You are sitting in a restaurant and the waiter brings you the food you ordered a whileago. If you think about you being the flow unit in the process of the restaurant, whichstep of this process will be downstream relative to your current position in the process?a. Waiting to orderb. Being seated at a tablec. Paying the billd. Reviewing the menuarrow_forwardA cell-phone repair shop consists of three processes. Step 1 requires 4 minutes per unit, step 2 requires 6 minutes per unit and step 3 requires 2 minutes per unit. 40% of units that complete the third step require rework, which means those units must start the process over at step 2 (processing times are the same for units being reworked) and rework is always successful. Demand at the shop is 0.8 units per minute. Instruction: Round your answer to three decimal places. What is the capacity of the shop (in units per units per minute)? units per minutearrow_forwardIf a production process makes a unit every two hours and it takes 42 hours for the unit to go through the entire process, then the expected work-in-process is equal to this.arrow_forward
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