69942 20190709135509.0 doi 10.1016/j.ress.2017.04.006 sideral 101874 ART-2017-101874 eng (orcid)0000-0002-8035-5762 Berrade, M. D. Universidad de Zaragoza A study of postponed replacement in a delay time model 2017 Access copy available to the general public Unrestricted 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. info:eu-repo/grantAgreement/ES/MINECO/MTM2015-63978-P info:eu-repo/semantics/openAccess by-nc-nd http://creativecommons.org/licenses/by-nc-nd/3.0/es/ 4.139 2017 OPERATIONS RESEARCH & MANAGEMENT SCIENCE 6 / 83 = 0.072 2017 Q1 T1 ENGINEERING, INDUSTRIAL 5 / 47 = 0.106 2017 Q1 T1 1.665 2017 Applied Mathematics 2017 Q1 Safety, Risk, Reliability and Quality 2017 Q1 Industrial and Manufacturing Engineering 2017 Q1 info:eu-repo/semantics/article info:eu-repo/semantics/acceptedVersion Scarf, P. A. Cavalcante, C.A.V. 2007 265 Universidad de Zaragoza Dpto. Métodos Estadísticos Área Estadís. Investig. Opera. 168 (2017), 70-79 Reliab. eng. syst. saf. RELIABILITY ENGINEERING & SYSTEM SAFETY 0951-8320 471438 http://zaguan.unizar.es/record/69942/files/texto_completo.pdf Postprint 69359 http://zaguan.unizar.es/record/69942/files/texto_completo.jpg?subformat=icon icon Postprint oai:zaguan.unizar.es:69942 articulos driver 2019-07-09-11:50:38 ARTICLE