A model of multiple nested inspections at different intervals

Wang, W

Abstract

Although much has been published concerning the optimality of a single-type inspection process, relatively
little attention has been paid in the literature of maintenance modelling to the practice of multiple nested
inspections. In this paper a novel model addressing multiple nested inspections of production plant at
di!erent intervals is established based upon the delay time concept. A branch-and-bound algorithm is
developed for "nding the optimal intervals for all the inspections which minimizes the long-term expected
total cost per unit time. The modelling can be readily extended to model downtime or reliability. Necessary
mathematics is presented and proofs are given. A numerical example is also given to illustrate the modelling
and solution processes.

Citation

Wang, W. (2000). A model of multiple nested inspections at different intervals. Computers and Operations Research, 27, 539-558

• Journal Article Type: Article
• Publication Date: Jan 1, 2000
• Deposit Date: Nov 24, 2009
• Journal: Computers and Operations Research
• Print ISSN: 0305-0548
• Publisher: Elsevier
• Peer Reviewed: Peer Reviewed
• Volume: 27
• Pages: 539-558
• Keywords: Inspection; Delay time; Optimization; Algorithm