부품재활용이 허용될 때 목표운용가용도 조건을 갖는 소모성 동시조달부품의 구매량 결정

Provisioning Quantity Determination of Consumable Concurrent Spare Part with Objective Availability Limitation under Cannibalization Allowed

In this paper we consider the concurrent spare part(CSP) requirements problem of new equipment system. When a part fails, the part is replaced and the repair of failed part is impossible and cannibalization is allowed. We assume that the failure of a part knows a Poisson process. The operational availability concept in CSP is defined, and derive a formula to calculate the operational availability using expected machine operating time during CSP period. A mathematical model is derived for making an CSP requirement determination subject to the constraint of satisfying any given operational availability limitation and an heuristic solution search procedure is derived. An illustrative example is shown to explain the solution procedure.