In this investigation, the explicit expressions for reliability function and mean time to failure (MTTF) of a repairable system with provision of spares and removable multi-repair facility have been established. In removable repairmen strategy, the repairmen turn on when there are N or more than N failed units and turn-off when system is empty. The failure times of operating/spare units and rep...

Installed base is a measure describing the number of units of a particular system actually in use. To maintain the performance of the installed units, spare parts inventory control is extremely important and becomes very challenging when the installed base changes over time. This problem is often encountered when a manufacturer starts to deliver a new product to customers and agrees to provide ...

The U.S Army depends heavily on the readiness and operability of its weapon systems. Maintaining these weapon systems requires that spare parts be available where and when they are needed. Thus, the responsive functioning of the logistics chain for spare parts is critical to keeping equipment ready to operate. A responsive logistics chain for spare parts is also critical in deployments. When Ar...

303  Abstract— Inventory management is the process of efficiently overseeing the constant flow of units into and out of an existing inventory. Inventory management of spare parts plays an important role in achieving the desired plant availability at an optimum cost. This paper presents a spare part classification method based on item movement in store department and criticality. FSN analysis i...

With deregulation, utilities in the electric power sector face a much more urgent imperative to emphasize cost efficiencies as compared to the days of regulation. One major opportunity for cost savings is through reductions in spare parts inventory. Most utilities are used to carrying large volumes of expensive, relatively slow-moving units because of a high degree of risk-averseness. In this p...

A one-unit repairable system, supported by r repair facilities and s spare units, fails when all units are down and are undergoing or awaiting repair. Under the perfect repair policy and instantaneous commencement of repair and installation to operation, the limiting average availability of the system is obtained when the lifetime has a density function and the repair time is exponentially dist...

and that Ω is partitioned into N subdomains Ωj , j = 1..N . The computation of these subdomains is distributed among N Processing Units (PUs) or computers. We anticipate that one or several PUs may stall or get disconnected. We complement the distributed architecture of these N PUs, with S additional PUs called spare processing units. The problem in designing a Fault Tolerant (FT) code that can...

today according to the competitive conditions, companies try to reduce their inventory level to diminish the costs. in companies inventory management and control should establish a balance between inventory level of spare parts, cost and the risk that arising from absence of part when is needed. it is clear that this level of spare parts inventory affected by facility characteristics and its re...

The results obtained from the RCS worksheet show that there is 1 unit of high critical category component, 10 units medium component and 4 low component. Calculation requirements for next 12 months using Poisson process total requirement spare parts to be able meet 95% availability v-belt mixers 7 (12 = 21 units), hydraulic rubber requires months=12 vibrating system 2 6 units). Order size costs...