Operations Management
17th Edition
ISBN: 9781259142208
Author: CACHON, Gérard, Terwiesch, Christian
Publisher: Mcgraw-hill Education,
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Chapter 4, Problem 16CQ
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To explain: If the impact on efficiency improvement will be large or small.
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A two station nurses clinic operates where you must visit the first station before the second. The CV of a cycle time for this is .75. Average process time for the first nurses station is 15 minutes. Average process time for the second nurses station is 9 minutes.
a. Find the standard deviation of the overall cycle time
b. Assume the std dev of the first nurses station is to be twice that of the second. What would the new coefficient of variation be if the standard deviation of the second nurse station is reduced by 60%?
A process is designed to produce 2,050 units per hour. The process has a scrap rate of 0.9% and a 14% inherent inefficiency. Assuming that the actual output of the process is 1,550 units per hour, what is the process design capacity, available capacity, actual capacity, capacity utilization, efficiency and the output gap for this process?
The design capacity is ____ units per hour. (Enter your response as a whole number.)
Heizer and Render advises that when analyzing and designing processes to transform resources into goods, the followingquestions should be asked:- Is the process designed to achieve competitive advantage in terms of differentiation, response or low cost?- Does the process eliminate steps that do not add value?- Does the process maximize customer value as perceived by the customer?- Will the process win orders?A Time-Function Map is similar to a flow process chart, but with time added to the horizontal axis. With time-function mapping,notes indicate the activities and arrows indicate the flow direction, with time on the horizontal axis.
Chapter 4 Solutions
Operations Management
Ch. 4 - Prob. 1CQCh. 4 - Prob. 2CQCh. 4 - Prob. 3CQCh. 4 - Prob. 4CQCh. 4 - Prob. 5CQCh. 4 - Which of the following statements about takt time...Ch. 4 - Prob. 7CQCh. 4 - Prob. 8CQCh. 4 - How does the target manpower change as the demand...Ch. 4 - What happens to the target manpower if the labor...
Ch. 4 - Which of the following actions does not relate to...Ch. 4 - Prob. 12CQCh. 4 - Prob. 13CQCh. 4 - Prob. 14CQCh. 4 - Specialization typically leads to a higher average...Ch. 4 - Prob. 16CQCh. 4 - Prob. 17CQCh. 4 - Prob. 18CQCh. 4 - Prob. 1PACh. 4 - Prob. 2PACh. 4 - Prob. 3PACh. 4 - Prob. 4PACh. 4 - Prob. 5PACh. 4 - Prob. 6PACh. 4 - Prob. 1C
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- The system efficiency is expressed as ratio of actual measured output to the design capacity Select one: a. False b. Truearrow_forwardHeizer and Render advises that when analyzing and designing processes to transform resources into goods, the followingquestions should be asked:- Is the process designed to achieve competitive advantage in terms of differentiation, response or low cost?- Does the process eliminate steps that do not add value?- Does the process maximize customer value as perceived by the customer?- Will the process win orders?A Time-Function Map is similar to a flow process chart, but with time added to the horizontal axis. With time-function mapping,notes indicate the activities and arrows indicate the flow direction, with time on the horizontal axis. 1. Choose a process within your organization and construct a Baseline Time-Function Maparrow_forwardA process makes two products, A and B, and operates 5 days per week, 8 hoursper day. Demand for the two products for the next week is as follows:Day 1: A: 4; B: 6Day 2: A: 5; B: 5Day 3: A: 6; B: 4Day 4: A: 7; B: 3Day 5: A: 3; B: 7What is the takt time of the process? What would a level production schedule look like?arrow_forward
- A staff assistant at NUBD Corporation recently determined that the first four units completed in a new manufacturing process took 1,000 hours to complete, or an average of 250 hours per unit. The assistant also found that when the cumulative output produced doubles, the average labor time declines by 25%. On the basis of this information, how many total hours would NUBD use if it produces 16 units?arrow_forwardTravelers are the flow unit in a process with two resources. The capacities of the resources are 1.3 and 0.88 travelers per second. Demand occurs at the rate 1.3 travelers per second. Instruction: Round your answer to one decimal place. What is the utilization (%) of the first resource? %arrow_forwardThe Abco Company manufactures electrical assemblies. The current process uses 10 workers and produces 200 units per hour. You are considering changing the process with new assembly methods that increase output to 300 units per hour, but will require 14 workers. Particulars are as follows: CURRENT PROCESS NEW PROCESS OUTPUT (UNITS / HOUR) NUMBER OF WORKERS MATERIAL COST/HOUR 200 300 10 14 $120 $150 Workers are paid at a rate of $10 per hour, and overhead is charged at 140% (or 1.4 times) labor costs. Finished switches sell for $20 / unit. Use the information provided in Table 1.2. What is the multifactor productivity of the current process? A) less than or equal to 8.0 B) greater than 8.0 but less than or equal to 10.0 C) greater than 10.0 but less than or equal to 12.0 D) greater than 12.0 I. Use the information provided in Table 1.2. What is the multifactor productivity of the new process? A) less than or equal to 8.0 B) greater than 8.0 but less than or equal to 10.0 C) greater than…arrow_forward
- n a manufacturing process, a molded part spends 7 hours in inventory before being placed in a deburring machine, where the part is processed for 2 minutes. After deburring, the part spends 4 hours in inventory waiting for its turn on the polishing machine. The part then spends 7 minutes in polishing before waiting 6 hours in line to be painted. The part goes through a painting process that takes 7 minutes, then spends 11 hours in inventory before being shipped to the customer. What is the percentage of value-added time for the part?arrow_forwardA process has high fixed costs and low variable costs. It is currently capacityconstrained. Will the impact of an efficiency improvement be small or large?a. Smallb. Largearrow_forward(a) T. Smunt Manufacturing Corp. has the process displayed below. The drilling operation occurs separately from and simultaneously with the sawing and sanding operations. The product only needs to go through one of the three assembly operations (the assembly operations are "parallel"). ASSEMBLY SAWING SANDING 78 min/unit 15 min/unit 15 min/unit WELDING ASSEMBLY DRILLING 25 min/unit 78 min/unit 27 min/unit ASSEMBLY 78 min/unit 1. Which operation is the bottleneck? 2. What is the throughput time for the overall system? 3. If the firm operates 8 hours per day, 22 days per month, what is the monthly capacity of the manufacturing process? 4. Suppose that a second drilling machine is added, and it takes the same time as the original frilling machine. What is the new bottleneck time of the system? 5. Suppose that a second drilling machine is added, and it takes the same time as the original drilling machine. What is the new throughput time?arrow_forward
- Please do not give solution in image format thanku Meals are the flow unit in a process with two sequential resources. The capacities of the resources are 28 and 24 meals per minute. Demand occurs at the rate 31 meals per minute. What is the utilization (%) of the second resource? Note: Round your answer to 1 decimal place.arrow_forwardA loan processing operation at a local bank processes an average of 7 loans per day. The operation has a design capacity of 10 loans per day and an effective capacity of 8 loans per day. What is the utilization of the processing operation? Select one: a. 100.0% b. 87.5% c. 70.0% d. 80.0% Warranty expense, the cost that a business incurs for the repair or replacement of goods that has sold, is an example of which of the following? Select one: a. Internal failure cost b. Appraisal cost c. Prevention cost d. External failure costarrow_forward3.Consider the following three-stage production process of glass ceramics. The process is experiencing severe quality problems related to insufficiently trained workers. Specifically, 20 percent of the parts going through operation 1 are badly processed by the operator. Rather than scrapping the unit, it is moved to a highly skilled rework operator, who can correct the mistake and finish up the unit completely within 15 minutes. The same problem occurs at station 2, where 10 percent of the parts are badly processed, requiring 10 minutes of rework. Station 3 also has a 10 percent ratio of badly processed parts, each of them requiring 5 minutes by the rework operator. a)What is the utilization of station 2 if work is released into the process at a rate of 5 units per hour? b)Where in the process is the bottleneck? Why? (Remember, the bottleneck is the resource with the lowest capacity, independent of demand.)arrow_forward
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