Ibrahim Yusuf*

A replacement problem of n unit parallel system with minimal repair options

We consider a replacement problem of n units parallel system, where a component failure is rectified by minimal repairs. We exchanged the system preventively before failure if the number of minimal repairs reaches m r m m − − − ,..., 2, 1 and is preventively replace if the sum of minimal repair reaches threshold value m . Keywords: minimal repairs, parallel system, failure,