An integrated model for optimizing maintenance and inspection of potential failures

In this paper, an integrated methodology is developed for optimizing inspection and maintenance of a component where delayed repair is considered to be one of feasible options. The models of failures, risk and life cycle cost are developed using probability, stochastic process and the delay time concept. The model is intended to optimise the inspection intervals and the delay of repair simultaneously and then develop an optimal maintenance policy for a component under non-periodic inspection regime. The performance of the proposed model is illustrated by an example and the effects of inspection and time of delay for repair on life cycle cost are shown.