Calculate lead time
Williams Optical Inc. is considering a new lean product cell. The present manufacturing approach produces a product in four separate steps. The production batch sizes are 45 units. The process time for each step is as follows:
Process Step 1 | 5 minutes |
Process Step 2 | 8 minutes |
Process Step 3 | 4 minutes |
Process Step 4 | 3 minutes |
The time required to move each batch between steps is 5 minutes. In addition, the time to move raw materials to Process Step 1 is also 5 minutes, and the lime to move completed units from Process Step 4 to finished goods inventory is 5 minutes.
The new lean layout will allow the company to reduce the batch sizes from 45 units to 3 units. The time required to move each batch between steps and the inventory locations will be reduced to 2 minutes. The processing time in each step will stay the same.
Determine the value-added, non-value-added, and total lead times, and the value-added ratio under the (A) present and (B) proposed production approaches. (Round percentages to one decimal place.)
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Chapter 26 Solutions
Financial & Managerial Accounting
- A manufacturing cell within a value stream has three processes and the following associated processing times: Drilling: 12 minutes Inserting: 6 minutes Finishing: 2 minutes How many units can the cell produce per hour (on a continuous running basis)? a. 10 units per hour b. 3 units per hour c. 5 units per hour d. 30 units per hourarrow_forwardUse the following information for Exercises 5-44 through 5-46: The following six situations at Diviney Manufacturing Inc. are independent. a. A manual insertion process takes 30 minutes and 8 pounds of material to produce a product. Automating the insertion process requires 15 minutes of machine time and 7.5 pounds of material. The cost per labor hour is 12, the cost per machine hour is 8, and the cost per pound of materials is 10. b. With its original design, a gear requires 8 hours of setup time. By redesigning the gear so that the number of different grooves needed is reduced by 50%, the setup time is reduced by 75%. The cost per setup hour is 50. c. A product currently requires 6 moves. By redesigning the manufacturing layout, the number of moves can be reduced from 6 to 0. The cost per move is 20. d. Inspection time for a plant is 16,000 hours per year. The cost of inspection consists of salaries of 8 inspectors, totaling 320,000. Inspection also uses supplies costing 5 per inspection hour. The company eliminated most defective components by eliminating low-quality suppliers. The number of production errors was reduced dramatically by installing a system of statistical process control. Further quality improvements were realized by redesigning the products, making them easier to manufacture. The net effect was to achieve a close to zero-defect state and eliminate the need for any inspection activity. e. Each unit of a product requires 6 components. The average number of components is 6.5 due to component failure, requiring rework and extra components. Developing relations with the right suppliers and increasing the quality of the purchased component can reduce the average number of components to 6 components per unit. The cost per component is 500. f. A plant produces 100 different electronic products. Each product requires an average of 8 components that are purchased externally. The components are different for each part. By redesigning the products, it is possible to produce the 100 products so that they all have 4 components in common. This will reduce the demand for purchasing, receiving, and paying bills. Estimated savings from the reduced demand are 900,000 per year. 5-46 Type of Activity Management Refer to the information for Diviney Manufacturing on the previous page. Required: For each situation, identify the cost reduction measure: activity elimination, activity reduction, activity sharing, or activity selection.arrow_forwardMabbut Company has the following departmental manufacturing layout for one of its plants: A consulting firm recommended a value stream with the following manufacturing cell: Required: 1. Calculate the total time it takes to produce a batch of 10 units using the traditional departmental manufacturing layout. 2. Using cellular manufacturing, how much time is saved producing the same batch of 10 units? Assuming the cell operates continuously, what is the production rate? Which process controls this production rate? 3. Assume the processing time of Welding is reduced to 6 minutes, while the times of the other processes stay the same. What is the production rate now, and how long will it take to produce a batch of 10 units if the cell is in a continuous production mode?arrow_forward
- Use the following information for Exercises 5-44 through 5-46: The following six situations at Diviney Manufacturing Inc. are independent. a. A manual insertion process takes 30 minutes and 8 pounds of material to produce a product. Automating the insertion process requires 15 minutes of machine time and 7.5 pounds of material. The cost per labor hour is 12, the cost per machine hour is 8, and the cost per pound of materials is 10. b. With its original design, a gear requires 8 hours of setup time. By redesigning the gear so that the number of different grooves needed is reduced by 50%, the setup time is reduced by 75%. The cost per setup hour is 50. c. A product currently requires 6 moves. By redesigning the manufacturing layout, the number of moves can be reduced from 6 to 0. The cost per move is 20. d. Inspection time for a plant is 16,000 hours per year. The cost of inspection consists of salaries of 8 inspectors, totaling 320,000. Inspection also uses supplies costing 5 per inspection hour. The company eliminated most defective components by eliminating low-quality suppliers. The number of production errors was reduced dramatically by installing a system of statistical process control. Further quality improvements were realized by redesigning the products, making them easier to manufacture. The net effect was to achieve a close to zero-defect state and eliminate the need for any inspection activity. e. Each unit of a product requires 6 components. The average number of components is 6.5 due to component failure, requiring rework and extra components. Developing relations with the right suppliers and increasing the quality of the purchased component can reduce the average number of components to 6 components per unit. The cost per component is 500. f. A plant produces 100 different electronic products. Each product requires an average of 8 components that are purchased externally. The components are different for each part. By redesigning the products, it is possible to produce the 100 products so that they all have 4 components in common. This will reduce the demand for purchasing, receiving, and paying bills. Estimated savings from the reduced demand are 900,000 per year. 5-44 Nonvalue-Added Costs Refer to the information for Diviney Manufacturing on the previous page. Required: Estimate the nonvalue-added cost for each situation.arrow_forwardGumbrecht Company has the following departmental manufacturing layout for one of its plants: A consulting firm has recommended a value stream with the following manufacturing cell: Required: 1. Calculate the total time it takes to produce a batch of 20 units using the traditional departmental manufacturing layout. 2. Using cellular manufacturing, how much time is saved producing the same batch of 20 units? Assuming the cell operates continuously, what is the production rate? Which process controls this production rate? 3. Assume the processing time of Casting is reduced to 9 minutes, while the times of the other processes stay the same. What is the production rate now, and how long will it take to produce a batch of 20 units if the cell is in a continuous production mode?arrow_forwardA manufacturing cell within a value stream is structured with four processes and associated processing times (for one unit): Molding: 6 minutes Grinding: 5 minutes Polishing: 5 minutes Finishing: 4 minutes How many units can the cell produce per hour (on a continuous running basis)? a. 3 units per hour b. 12 units per hour c. 15 units per hour d. 10 units per hourarrow_forward
- Bienestar Inc., has the following departmental structure for producing a well-known multivitamin: A consultant designed the following cellular manufacturing structure for the same product: The times above the processes represent the time required to process one unit of product. Required: 1. Calculate the time required to produce a batch of 15 bottles using a batch-processing departmental structure. 2. Calculate the time to process 15 units using cellular manufacturing. 3. How much manufacturing time will the cellular manufacturing structure save for a batch of 15 units?arrow_forwardUse the following information for Exercises 5-44 through 5-46: The following six situations at Diviney Manufacturing Inc. are independent. a. A manual insertion process takes 30 minutes and 8 pounds of material to produce a product. Automating the insertion process requires 15 minutes of machine time and 7.5 pounds of material. The cost per labor hour is 12, the cost per machine hour is 8, and the cost per pound of materials is 10. b. With its original design, a gear requires 8 hours of setup time. By redesigning the gear so that the number of different grooves needed is reduced by 50%, the setup time is reduced by 75%. The cost per setup hour is 50. c. A product currently requires 6 moves. By redesigning the manufacturing layout, the number of moves can be reduced from 6 to 0. The cost per move is 20. d. Inspection time for a plant is 16,000 hours per year. The cost of inspection consists of salaries of 8 inspectors, totaling 320,000. Inspection also uses supplies costing 5 per inspection hour. The company eliminated most defective components by eliminating low-quality suppliers. The number of production errors was reduced dramatically by installing a system of statistical process control. Further quality improvements were realized by redesigning the products, making them easier to manufacture. The net effect was to achieve a close to zero-defect state and eliminate the need for any inspection activity. e. Each unit of a product requires 6 components. The average number of components is 6.5 due to component failure, requiring rework and extra components. Developing relations with the right suppliers and increasing the quality of the purchased component can reduce the average number of components to 6 components per unit. The cost per component is 500. f. A plant produces 100 different electronic products. Each product requires an average of 8 components that are purchased externally. The components are different for each part. By redesigning the products, it is possible to produce the 100 products so that they all have 4 components in common. This will reduce the demand for purchasing, receiving, and paying bills. Estimated savings from the reduced demand are 900,000 per year. 5-45 Driver Analysis Refer to the information for Diviney Manufacturing on the previous page. Required: CONCEPTUAL CONNECTION For each situation, identify the possible root cause(s) of the activity cost (such as plant layout, process design, and product design).arrow_forwardAssume that at the beginning of 20x2, Cicleta trained the 2 assembly workers in a new approach that had the objective of increasing the efficiency of the assembly process. Cicleta also began moving toward a JIT purchasing and manufacturing system. When JIT is fully implemented, the demand for expediting is expected to be virtually eliminated. It is expected to take two to three years for full implementation. Assume that receiving cost is a step-fixed cost with steps of 1,500 orders. The other three activities employ resources that are acquired as used and needed. At the end of 20x2, the following results were reported for the four activities: Required: 1. Prepare a trend report that shows the non-value-added costs for each activity for 20x1 and 20x2 and the change in costs for the two periods. Discuss the reports implications. 2. Explain the role of activity reduction for receiving and for expediting. What is the expected value of SQ for each activity after JIT is fully implemented? 3. What if at the end of 20x2, the selling price of a competing product is reduced by 27 per unit? Assume that the firm produces and sells 20,000 units of its product and that its product is associated only with the four activities being considered. By virtue of the waste-reduction savings, can the competitors price reduction be matched without reducing the unit profit margin of the product that prevailed at the beginning of the year? If not, how much more waste reduction is needed to achieve this outcome? In this case, what price decision would you recommend?arrow_forward
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