EconPapers    
Economics at your fingertips  
 

Joint optimization of redundancy level and spare part inventories

Andrei Sleptchenko and Matthieu van der Heijden

Reliability Engineering and System Safety, 2016, vol. 153, issue C, 64-74

Abstract: We 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.

Keywords: Maintenance; Spare parts; k-out-of-N systems; Availability (search for similar items in EconPapers)
Date: 2016
References: View references in EconPapers View complete reference list from CitEc
Citations View citations in EconPapers (1) Track citations by RSS feed

Downloads: (external link)
http://www.sciencedirect.com/science/article/pii/S0951832016300205
Full text for ScienceDirect subscribers only

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:eee:reensy:v:153:y:2016:i:c:p:64-74

Access Statistics for this article

Reliability Engineering and System Safety is currently edited by Carlos Guedes Soares

More articles in Reliability Engineering and System Safety from Elsevier
Series data maintained by Dana Niculescu ().

 
Page updated 2017-11-11
Handle: RePEc:eee:reensy:v:153:y:2016:i:c:p:64-74