Risk Management & Maintenance Flashcards

Which maintenance strategy is BEST suited for components where failure consequences are safety-critical and failure modes are detectable before function loss?

Answer: Condition-based maintenance

Condition-based maintenance monitors detectable degradation signals to intervene before safety-critical failures occur.

In a risk matrix, a hazard rated 'Catastrophic' severity with 'Improbable' likelihood is typically classified as:

Answer: ALARP region risk

Catastrophic severity with low probability typically falls in the ALARP (As Low As Reasonably Practicable) region requiring justification to accept.

The P-F interval in predictive maintenance refers to the time between:

Answer: Potential failure detection and functional failure

The P-F interval is the time from when a potential failure becomes detectable to when functional failure occurs.

Which risk reduction technique involves adding redundant systems to reduce the probability of overall system failure?

Answer: Fault tolerance

Fault tolerance uses redundancy so that individual component failures do not cause system-level failure.

A Bow-Tie diagram in risk management combines which two analysis techniques?

Answer: Fault Tree Analysis and Event Tree Analysis

A Bow-Tie diagram uses a Fault Tree on the left (causes leading to a hazard) and an Event Tree on the right (consequences).

When applying RCM (Reliability-Centered Maintenance), the first question to ask about each function is:

Answer: What is the item's function?

RCM always begins by defining what functions the asset is required to perform in its operating context.

Which maintenance tactic is most appropriate for a component with an Infant Mortality failure pattern (high early failure rate)?

Answer: Burn-in testing before installation

Burn-in or run-in testing screens out early failures before installation, reducing field failures from infant mortality.