CMRP - Certified Maintenance and Reliability Professional Reliability-Centered Maintenance Analysis Questions and Answers 1

Question 1

What is the fundamental objective of a Reliability-Centered Maintenance (RCM) analysis?

Accepted Answer

To preserve the intended function of a system or asset within its operating context.

Answer

The primary goal of RCM is to preserve system function, not necessarily to prevent all failures or extend the life of every component. It focuses on ensuring the system continues to do what its users require of it in its specific operating context.

Question 2

An RCM team is analyzing a critical cooling pump. They have defined its functions and identified a functional failure: 'Fails to provide a minimum of 500 GPM.' They have also listed a failure mode: 'Impeller worn beyond tolerance.' According to the structured RCM process (SAE JA1011), what is the immediate next question the team must answer?

Accepted Answer

What happens when this failure occurs (the failure effects)?

Answer

The standard RCM methodology follows a specific sequence of seven questions. After identifying a failure mode ('What causes each functional failure?'), the immediate next step is to determine the failure effects ('What happens when each failure occurs?'). This information is crucial for assessing the failure consequences later in the analysis.

Question 3

During an RCM analysis of a backup generator's auto-start system, the team identifies a failure mode where a control relay fails open. This failure is not apparent during normal operations and only becomes an issue during a power outage. How should the consequences of this failure mode be categorized?

Accepted Answer

Hidden, with potential Safety or Environmental Consequences

Answer

A hidden failure is one that is not evident to the operating crew under normal circumstances. The failure of a protective device like an auto-start system is a classic example. The consequences are evaluated based on the potential outcome of the multiple failure (the initial power outage plus the failure of the backup system), which could lead to a safety issue. Therefore, it's a hidden failure with potential safety consequences.

Question 4

Which of the following is NOT one of the seven basic questions that a Reliability-Centered Maintenance (RCM) process must answer, as defined by the SAE JA1011 standard?

Accepted Answer

What is the Mean Time Between Failure (MTBF) for each component?

Answer

The seven questions of RCM focus on function, functional failures, failure modes, failure effects, failure consequences, proactive tasks, and default actions. While MTBF data can be useful in the analysis, calculating it for every component is not one of the core required questions of the RCM process itself.

Question 5

An RCM analysis identifies a potential failure mode that has direct and significant safety consequences. Which of the following represents the MOST appropriate hierarchy for selecting a proactive maintenance task?

Accepted Answer

Condition-directed (on-condition) task, followed by a time-directed (scheduled) restoration or replacement.

Answer

The RCM decision logic prioritizes condition-directed (predictive) tasks because they are performed only when needed, minimizing maintenance costs and intrusive actions. If a suitable on-condition task is not technically feasible or cost-effective, the next choice is a time-directed (preventive) task. Failure-finding is only for hidden failures, and redesign is a default action, not a proactive task.

CMRP - Certified Maintenance and Reliability Professional Practice Test

CMRP - Certified Maintenance and Reliability Professional Practice Test

CMRP - Certified Maintenance and Reliability Professional Reliability-Centered Maintenance Analysis Questions and Answers 1