A study of postponed replacement in a delay time model
Resumen: 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.
Idioma: Inglés
DOI: 10.1016/j.ress.2017.04.006
Año: 2017
Publicado en: RELIABILITY ENGINEERING & SYSTEM SAFETY 168 (2017), 70-79
ISSN: 0951-8320

Factor impacto JCR: 4.139 (2017)
Categ. JCR: OPERATIONS RESEARCH & MANAGEMENT SCIENCE rank: 6 / 83 = 0.072 (2017) - Q1 - T1
Categ. JCR: ENGINEERING, INDUSTRIAL rank: 5 / 47 = 0.106 (2017) - Q1 - T1

Factor impacto SCIMAGO: 1.665 - Applied Mathematics (Q1) - Safety, Risk, Reliability and Quality (Q1) - Industrial and Manufacturing Engineering (Q1)

Financiación: info:eu-repo/grantAgreement/ES/MINECO/MTM2015-63978-P
Tipo y forma: Article (PostPrint)
Área (Departamento): Área Estadís. Investig. Opera. (Dpto. Métodos Estadísticos)

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