CMRP - Certified Maintenance and Reliability Professional Root Cause Failure Analysis Questions and Answers

Question 1

A team investigating a recurring bearing failure identifies that a technician used the wrong lubricant.
The team's analysis concludes the root cause was 'human error' and recommends retraining the technician.
Why is this Root Cause Failure Analysis (RCFA) considered incomplete?

Accepted Answer

It failed to identify the latent or systemic root causes that allowed the error to occur.

Answer

It did not use a quantitative tool like Fault Tree Analysis.

Answer

It stopped at the physical root cause of lubricant breakdown.

Answer

It did not include the equipment manufacturer in the analysis team.

Question 2

When initiating a Root Cause Failure Analysis for a catastrophic mechanical breakdown that has just occurred, which of the following actions is the MOST critical first step?

Accepted Answer

Securing the failure site and preserving all physical evidence in its 'as-failed' state.

Answer

Immediately interviewing the operator who was running the machine.

Answer

Pulling all maintenance records for the asset from the CMMS.

Answer

Forming a cross-functional team of experts to lead the investigation.

Question 3

Which of the following statements best describes a primary characteristic of the 5 Whys analysis technique?

Accepted Answer

It is a simple, iterative questioning method used to explore the cause-and-effect chain behind a problem.

Answer

It is a top-down, deductive method that requires Boolean logic to map failure paths.

Answer

It graphically organizes all potential causes into predefined categories like Man, Machine, and Method.

Answer

It is primarily used to quantify the risk and severity of potential failure modes.

Question 4

A reliability engineer is choosing a tool to analyze a complex failure with multiple, interacting causes and wants to graphically display all potential causes organized by categories. Which RCFA tool is best suited for this purpose?

Accepted Answer

Ishikawa (Fishbone) Diagram

Answer

Fault Tree Analysis (FTA)

Answer

5 Whys

Answer

Pareto Analysis

Question 5

An RCFA investigation correctly identifies the systemic root cause of a recurring pump failure as an inadequate specification for the bearing type during the procurement process. The team submits a detailed report with this finding. To ensure the RCFA creates lasting value, what is the MOST important subsequent action?

Accepted Answer

Creating a formal corrective action with an owner and due date to update the procurement specification.

Answer

Archiving the report in a shared database for future reference.

Answer

Calculating the ROI of the investigation to justify the time spent.

Answer

Presenting the findings at the next plant-wide safety meeting.

Question 6

When defining the problem statement at the beginning of a Root Cause Analysis, which of the following elements should be explicitly AVOIDED?

Accepted Answer

Any mention of potential causes or solutions.

Answer

A description of the timeline and trend of the problem.

Answer

Quantifiable data showing the impact of the problem.

Answer

The specific object or system that is failing.