Process+Analysis+II

Process+Analysis+II - Process Analysis II 1 Some process...

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1 Process Analysis II
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2 Some process terms | Capacity z The amount of output that a process is capable of achieving during a specific period of time | Bottleneck z The process that limits the capacity of a system (network of processes)
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3 Types of Processes (by layout) Single-stage Process Stage 1 Stage 1 Stage 2 Stage 3 Multi-stage Process
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4 Types of Processes (by layout) Stage 1 Stage 2 Buffer Multi-stage Process with Buffer
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5 Types of Processes (by the nature of process initiation) | Make-to-order (MTO) z Only activated in response to an actual order z Both work-in-process and finished goods inventory kept to a minimum | Make-to-stock (MTS) z Process activated to meet expected or forecast demand z Customer orders are served from target stocking level | Hybrid z Combination of the features of both MTO and MTS z Most of the systems are hybrid process. Very few are in either pure MTO or MTS.
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6 Process Performance Measures | Run time z Run time is the time required to produce a batch of items. | Setup time z Setup time is the time required to set up the process to produce a particular item | Operation time = Setup time + Run time
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7 Process Performance Measures | Cycle time z Cycle time is the average time between completion of units | Efficiency = Actual output Standard Output
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8 Process Performance Measures capacity Production rate production Actual available Time activated Time n Utilizatio or =
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9 Cycle Time Example If you have to produce 600 units in 80 hours to meet the demand requirements of a product. What is the cycle time to meet this demand requirement? Answer: There are 4,800 minutes (60 minutes/hour x 80 hours) in 80 hours. So the average time between completions would have to be: Cycle time = 4,800/600 units = 8 minutes
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10 Cycle time explained | The 8 minutes is just a benchmark
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This note was uploaded on 09/21/2011 for the course COMP 4631 taught by Professor Ding during the Fall '11 term at HKUST.

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Process+Analysis+II - Process Analysis II 1 Some process...

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