Berrade, MD, Scarf, PA 
ORCID: https://orcid.org/0000-0001-5623-906X and Cavalcante, CAV
2017,
'A study of postponed replacement in a delay time model'
, Reliability Engineering & System Safety, 168
, pp. 70-79.
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Abstract
We develop a delay time model for a one component system with postponed replacement to analyze situations in which maintenance might not be executed immediately upon discovery of a defect in the system. Reasons for postponement are numerous: to avoid production disruption or unnecessary or ineffective replacement; to prepare for replacement; to extend component life; to wait for an opportunity. This paper explores conditions that make postponement cost-effective. We are interested in modelling the reality in which a maintainer either prioritizes functional continuity or is not confident of the inspection test indicating a defective state. In some cases more frequent inspection and a longer time limit for postponement are recommended to take advantage of maintenance opportunities, characterized by their low cost, arising after a positive inspection. However, when the cost of failure increases, a significant reduction in the time limit of postponement interval is observed. The examples reveal that both the time to defect arrival and delay time have a significant effect upon the cost-effectiveness of maintenance at the limit of postponement. Also, more simply, we find that opportunities must occur frequently enough and inspection should be a high quality procedure to risk postponement.
| Item Type: | Article |
|---|---|
| Schools: | Schools > Salford Business School > Salford Business School Research Centre |
| Journal or Publication Title: | Reliability Engineering & System Safety |
| Publisher: | Elsevier |
| ISSN: | 0951-8320 |
| Related URLs: | |
| Depositing User: | Dr Philip Scarf |
| Date Deposited: | 19 Apr 2017 09:00 |
| Last Modified: | 15 Feb 2022 21:53 |
| URI: | https://usir.salford.ac.uk/id/eprint/42155 |
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