A system has a repair time that has been demonstrated to be normally distributed with a...

 

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A system has a repair time that has been demonstrated to be normally distributed with a mean of 5.6 hr and a standard deviation of 1.4 hr. Contract specifications require 95 percent of the repairs to be completed within 8 hr. The average crew size is two. In addi- tion, the number of maintenance work hours per operating hour is not to exceed 1 hr for every 100 operating hours (failure-based maintenance only). A reliability demonstra- tion resulted in time between failures being Weibull with = 3000 hr and 3= 1.3. Are the specifications being met? Assume a steady-state renewal process. A system has a repair time that has been demonstrated to be normally distributed with a mean of 5.6 hr and a standard deviation of 1.4 hr. Contract specifications require 95 percent of the repairs to be completed within 8 hr. The average crew size is two. In addi- tion, the number of maintenance work hours per operating hour is not to exceed 1 hr for every 100 operating hours (failure-based maintenance only). A reliability demonstra- tion resulted in time between failures being Weibull with = 3000 hr and 3= 1.3. Are the specifications being met? Assume a steady-state renewal process.

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To determine if the specifications are being met lets break down the different aspects one by one 1 ... View the full answer