Show simple item record

AuthorSleptchenko, Andrei
Authorvan der Heijden, Matthieu
Available date2021-09-05T05:40:17Z
Publication Date2016
Publication NameReliability Engineering and System Safety
ResourceScopus
ISSN9518320
URIhttp://dx.doi.org/10.1016/j.ress.2016.04.006
URIhttp://hdl.handle.net/10576/22713
AbstractWe consider a "k-out-of-N"? system with different standby modes. Each of the N components consists of multiple part types. Upon failure, a component can be repaired within a certain time by switching the failed part by a spare, if available. We develop both an exact and a fast approximate analysis to compute the system availability. Next, we jointly optimize the component redundancy level with the inventories of the various spare parts. We find that our approximations are very accurate and suitable for large systems. We apply our model to a case study at a public organization in Qatar, and find that we can improve the availability-to-cost ratio by reducing the redundancy level and increasing the spare part inventories. In general, high redundancy levels appear to be useful only when components are relatively cheap and part replacement times are high.
SponsorThis publication was made possible by the NPRP award [NPRP 7-308-2-128] from the Qatar National Research Fund (a member of The Qatar Foundation). The statements made herein are solely the responsibility of the author(s).
Languageen
PublisherElsevier Ltd
SubjectAvailability
k-out-of-N systems
Maintenance
Spare parts
TitleJoint optimization of redundancy level and spare part inventories
TypeArticle
Pagination64-74
Volume Number153
dc.accessType Abstract Only


Files in this item

FilesSizeFormatView

There are no files associated with this item.

This item appears in the following Collection(s)

Show simple item record