5. Think of a large factory that moves iobs from one workstation to another usin
ID: 336958 • Letter: 5
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5. Think of a large factory that moves iobs from one workstation to another using fork trucks. When a workstation has filled up a bin that is ready for a fork truck, it sends out a signal to a central dispatching area. When the signal comes in, the dispatcher will assign it to the next available fork truck. On average, the dispatcher gets about 29 signals per hour. There tends to be a lot of variability in these signals and the SCV has been estimated at 2. It takes a fork truck 6 minutes, on average, to get to the job and move it to it destination. The SCV of the move time is estimated at 1. There are currently 4 fork trucks on duty. What is the current utilization of the fork trucks and the current average time that a job spends waiting to be assigned a fork truck? What would happen to the time a job spends waiting if the number of fork trucks was reduced to 3? 6. Again, picture a large factory with a lot of different pieces of equipment. Many times, when a piece of equipment fails or jams, the operator can quickly fix it. But, there are many cases when the operator needs to call one of the technicians to fix the problem. There are currently 2 technicians on staff for each shift. When they are called, it takes them 48 minutes, on average, to fix the machine with an SCV of 1 The plant averages about 2 calls per hour for the technicians support. The SCV of the calls is also estimated a 1. How much extra downtime is incurred at a machine just waiting for a technician to be free? How many machines, on average, are brokern down at any given time?How much would these parameters be improved by doubling the number of technicians to 4?Explanation / Answer
5. Think of a large factory that moves iobs from one workstation to another using fork trucks. When a workstation has filled up a bin that is ready for a fork truck, it sends out a signal to a central dispatching area. When the signal comes in, the dispatcher will assign it to the next available fork truck. On average, the dispatcher gets about 29 signals per hour. There tends to be a lot of variability in these signals and the SCV has been estimated at 2. It takes a fork truck 6 minutes, on average, to get to the job and move it to it destination. The SCV of the move time is estimated at 1. There are currently 4 fork trucks on duty. What is the current utilization of the fork trucks and the current average time that a job spends waiting to be assigned a fork truck? What would happen to the time a job spends waiting if the number of fork trucks was reduced to 3? 6. Again, picture a large factory with a lot of different pieces of equipment. Many times, when a piece of equipment fails or jams, the operator can quickly fix it. But, there are many cases when the operator needs to call one of the technicians to fix the problem. There are currently 2 technicians on staff for each shift. When they are called, it takes them 48 minutes, on average, to fix the machine with an SCV of 1 The plant averages about 2 calls per hour for the technicians support. The SCV of the calls is also estimated a 1. How much extra downtime is incurred at a machine just waiting for a technician to be free? How many machines, on average, are brokern down at any given time?How much would these parameters be improved by doubling the number of technicians to 4?
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