{"title":"Predicting operational availability for systems with redundant, repairable components and multiple sparing levels","authors":"B. Mitchell, R. Murry","doi":"10.1109/RAMS.1996.500679","DOIUrl":null,"url":null,"abstract":"The Strategic Petroleum Reserve (SPR) is a multi-mission project required by law to maintain a prescribed degree of readiness and a mandated performance criteria. The prediction of operational availability is essential to determine operational readiness to satisfy mission requirements. This is accomplished through, the use of availability models utilizing a reliability block diagram (RED) of mission critical components. The RED model calculations incorporate sparing criteria and components using a multi-state model of the operation. Individual component data include: capacity, meantime-between-failure (MTBF), and mean-down-time (MDT) assuming repairable components and instantaneous switching. An accurate site model addresses all of these concerns and provides a good prediction of operational availability. An example of a system without a spare and the same system with a spare is presented to illustrate one method of incorporating sparing into the prediction of operational availability.","PeriodicalId":393833,"journal":{"name":"Proceedings of 1996 Annual Reliability and Maintainability Symposium","volume":null,"pages":null},"PeriodicalIF":0.0000,"publicationDate":"1996-01-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"5","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Proceedings of 1996 Annual Reliability and Maintainability Symposium","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/RAMS.1996.500679","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 5
Abstract
The Strategic Petroleum Reserve (SPR) is a multi-mission project required by law to maintain a prescribed degree of readiness and a mandated performance criteria. The prediction of operational availability is essential to determine operational readiness to satisfy mission requirements. This is accomplished through, the use of availability models utilizing a reliability block diagram (RED) of mission critical components. The RED model calculations incorporate sparing criteria and components using a multi-state model of the operation. Individual component data include: capacity, meantime-between-failure (MTBF), and mean-down-time (MDT) assuming repairable components and instantaneous switching. An accurate site model addresses all of these concerns and provides a good prediction of operational availability. An example of a system without a spare and the same system with a spare is presented to illustrate one method of incorporating sparing into the prediction of operational availability.