CRE Risk Management & Maintenance 2

Question 1

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

Accepted Answer

Condition-based maintenance

Answer

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

Question 2

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

Accepted Answer

ALARP region risk

Answer

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

Question 3

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

Accepted Answer

Potential failure detection and functional failure

Answer

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

Question 4

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

Accepted Answer

Fault tolerance

Answer

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

Question 5

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

Accepted Answer

Fault Tree Analysis and Event Tree Analysis

Answer

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

(CRE) Certified Reliability Engineer Practice Test

(CRE) Certified Reliability Engineer Practice Test

CRE Risk Management & Maintenance 2