The Computation of the Spare Parts Number for Repair as New Model and the Fiducial Inference of It's Upper Confidence Limit

In this paper, based on the repair as new model, under the same storage condition, the spare parts number M for N identical systems is derived on the condition that failures are repaired with probability P_0. For system which follows Weibull distribution, utilizing the pivotal quantity and Fiducial distribution, the upper confidence limit of the spare parts number M is defined; futhermore, based on the complete samples in life testing, utilizing the Fiducial method, the computation of the upper confidence limit of the spare parts number M is given in the end.