A constrained periodic review model for a probabilistic reparable-item inventory system.
Hastings, David Ainsworth
Schrady, David A.
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A reparable-item inventory system has two sources of items to meet demands: from the procurement of new items, and from the repair of damaged or failed items. Further, the system contains two distinct inventories, one containing procured and repaired ready-forissue items and the other containing those failed items awaiting repair. This thesis develops an approximate model of this general system assuming that the demand rate and return rate of failed items are probabilistic. A periodic review policy is assumed for procured items, and inductions of batches of failed items into repair are assumed to take place at regularly scheduled intervals of time. The model is structured as a single coordinated inventory system instead of two separate systems, one of procured items and one of repaired items. The optimal review period and "order up to" level for procured items are determined, along with the optimal time between repair batch inductions.
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Keitel, Karl-Heinz E. (1986-09);The study analyzes the internal states of a 3-component system with one active element and two spares in cold standby (pure replacement policy without repair). Elements of the system are assumed to have exponentially ...
Freiheit, James Edward (Monterey, California. U.S. Naval Postgraduate School, 1967-06);In general, a reparable inventory system deals with two classes of the same type of item. The first class consists of those items which have been procured from the manufacturer and have never been put to use. The second ...
Hatchett, John Wayne. (Monterey, California. Naval Postgraduate School, 1966-11); Technical Report / Research Paper No. 71A model is defined to account for an inventory system which carries items that are subject to repair after use, wearout or failure and then reissued. Such a system is called a repairable item inventory system and, important ...