Operations Management
2nd Edition
ISBN: 9781260484687
Author: CACHON, Gerard
Publisher: MCGRAW-HILL HIGHER EDUCATION
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Chapter 7, Problem 7PA
a)
Summary Introduction
To determine: The process capacity in units per hour with a batch size of 100 wafers.
b)
Summary Introduction
To determine: The utilization of depositing.
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JCL Inc. is a major chip manufacturing firm that sells its products to computer manufacturers like Dell, HP, and others. In simplified terms, chip making at JCL Inc. involves three basic operations: depositing, patterning, and etching.
Depositing: Using chemical vapor deposition (CVD) technology, an insulating material is deposited on the wafer surface, forming a thin layer of solid material on the chip.
Patterning: Photolithography projects a microscopic circuit pattern on the wafer surface, which has a light-sensitive chemical like the emulsion on photographic film. It is repeated many times as each layer of the chip is built.
Etching: Etching removes selected material from the chip surface to create the device structures.
The following table lists the required processing times and setup times at each of the steps. Assume that the unit of production is a wafer, from which individual chips are cut at a later stage.
Note: A setup can only begin once the batch has arrived at the…
JCL Inc. is a major chip manufacturing firm that sells its products to computer manufacturers like Dell, Gateway, and others. In
simplified terms, chip making at JCL Inc. involves three basic operations: depositing, patterning, and etching.
• Depositing: Using chemical vapor deposition (CVD) technology, an insulating material is deposited on the wafer surface, forming a
thin layer of solid material on the chip.
Patterning: Photolithography projects a microscopic circuit pattern on the wafer surface, which has a light-sensitive chemical like
the emulsion on photographic film. It is repeated many times as each layer of the chip is built.
• Etching: Etching removes selected material from the chip surface to create the device structures.
The table below lists the required processing times and setup times at each of the steps. There is unlimited space for buffer inventory
between these steps. Assume that the unit of production is a wafer, from which individual chips are cut at a later…
A Company produces a component for use in the aerospace industry. The component consists of three parts (A, B and C), which are purchased externally and cost 50c, 60c and 70c per piece respectively. Parts A and B are assembled first on assembly line 1, which produces 150 components per hour. Part C undergoes a drilling operation before being finally assembled with the output from assembly line 1. There are six drilling machines in total, but only three are currently operational. Each drilling machine drills part C at a rate of 30 parts per hour. The final assembly line has a production capacity of 100 components per hour. At present, components are produced eight hours a day, five days a week.
If the need arises, management can add a second shift of eight hours for the assembly lines only.
The cost of assembly labour is 40c per assembly operation for each assembly line; the cost of drilling labour is 20c per part. For drilling, the cost of electricity is 10c per part. The overhead cost…
Chapter 7 Solutions
Operations Management
Ch. 7 - Prob. 1CQCh. 7 - Prob. 2CQCh. 7 - Prob. 3CQCh. 7 - Prob. 4CQCh. 7 - Prob. 5CQCh. 7 - Prob. 6CQCh. 7 - Prob. 7CQCh. 7 - Prob. 8CQCh. 7 - Prob. 9CQCh. 7 - Prob. 10CQ
Ch. 7 - Prob. 11CQCh. 7 - Prob. 12CQCh. 7 - Prob. 13CQCh. 7 - Prob. 14CQCh. 7 - Prob. 1PACh. 7 - Prob. 2PACh. 7 - Prob. 3PACh. 7 - Prob. 4PACh. 7 - Prob. 5PACh. 7 - Sarahs Organic Soap Company makes four kinds of...Ch. 7 - Prob. 7PACh. 7 - Prob. 8PACh. 7 - Bruno Fruscalzo decided to set up a small...Ch. 7 - Prob. 10PACh. 7 - Prob. 11PACh. 7 - Prob. 1CCh. 7 - Prob. 2CCh. 7 - Prob. 3CCh. 7 - Prob. 4C
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- Quasi-Tech Corporation produces specially machined parts. The parts are produced in batches in one continuous manufacturing process. Each part is custom produced and requires special engineering design activity (based on customer specifications). Once the design is completed, the equipment can be set up for batch production. Once the batch is completed, a sample is taken and inspected to see if the parts are within the tolerances allowed. Thus, the manufacturing process has four activities: engineering, setups, machining, and inspecting. Costs have been assigned to each activity using direct tracing and resource drivers as follows: Activity Expected Cost Activity Driver Activity Capacity Engineering $1,000,000 Engineering hours 5,000 hours Setups 900,000 Setups 200 setups Machining 2,000,000 Machine hours 25,000 machine hours Inspection 800,000 Inspection hours 2,500 inspection hours Quasi-Tech produces two models: Model C and Model D. The following table…arrow_forwardA manufacturing process has a i xed cost of $150,000 per month. Each unit of product being produced contains $25 worth of material and takes $45 of labor. How many units are needed to break even if each completed unit has a value of $90?arrow_forwardSawing 20 min/unit Sanding 20 min/unit Drilling 32 min/unit Welding 30 min/unit Assembly 93 min/unit Assembly 93 min/unit Assembly 93 min/unit A production process is shown in the figure above. The drilling operation occurs separately from, and simultaneously with the sawing and sanding operations. Welding starts when both drilling and sanding operations have been completed. After welding, a product needs to go through only one of the three assembly operations (the operations are in parallel, where parallel lines perform the exact same operation). Considering the process times at stations, what is the process time of the system (in min/unit)?arrow_forward
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- The mailroom receives checks and remittanceadvices from customers in payment of their accountsreceivable. The clerk reviews the documents for completenessand correctness, sends the checks to thecash receipts department, and sends the remittanceadvices to the AR department. The AR clerkreceives the remittance advices and updates the customers’AR records from the PC in the AR department.The cash receipts clerk receives the checks andposts them to the cash receipts journal from the PCin the department. The clerk then sends the checks tothe bank for deposit.RequiredPrepare a system flowchart of the proceduresdescribed previously.arrow_forwardWhat kind of information is stored in the various fields of a process control block?arrow_forwardA machine cycle consists of these four steps; this loop is also known as a process cycle. What factors do most influence how much individuals value machine cycles? Should I worry about repairing or replacing the machine's wearing components? Can a second module solve the issue of switching modules?arrow_forward
- A manufacturing process has a fixed cost of $150,000 per month Each unit of product being produced contains $25 worth of material and takes $45 of labor. How many units are needed to break even if each completed unit has a value of $90?arrow_forwardWhich of the following is not included in the procedures of applying the Theory of Constraints for process improvement? Identifying the new weakest link and doing the improvement process over again Identifying the weakest link in the chain. Do not place a greater strain on the system than the weakest link can handle. Concentrate improvement efforts on strengthening the processes after the weakest link.arrow_forwardThe term "process view of organizations" refers to the fact that a process includes manufacturing and services only. a process includes manufacturing only. a process includes any part of organization including accounts payables and receivables. a process includes services only. None of these answer choicesarrow_forward
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