... Abstract Safety–critical protective systems mitigate possible collateral harm to the public, when randomly occurring initiating events challenge the operational integrity of hazardous technologies. Quantifying the efficacy of protection remains a challenge to engineers and regulators...

... Abstract The processes used in managing protective system equipment failures in the commercial nuclear power setting are reviewed. We assert that efficacy of protection is governed by maintenance policy that includes system modification, maintenance inter-arrivals as a function of time...