Risk-based maintenance: relationship between the risk and the environment of operation

Abstract

The risk-based maintenance is sustained in the mapping of the risk of the assets failure in an organization. The failure risk of an asset depends on the consequence of a specific failure and the probability of occurrence of such a failure. The maintenance tools based on risk assessment allow to reducing the risk of assets failure and contribute to the life cycle optimization. Being the failure risk of an asset affected by the environment of its operation, the corresponding maintenance management should be adapted to this specific environment to keep the failure below the pre-defined maximum risk criterion. Hence, the main goal of this paper is to demonstrate how the operating environment of an asset relates with its failure risk. Thus, the failure risk of a known system operating in normal conditions and in a hostile environment will be evaluated. In the end, it's expected to be known what criteria which contribute to the risk calculation we should be aware to recalculate the failure risk and review the maintenance plan.