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.