CMRT - Certified Maintenance and Reliability Technician Corrective Maintenance Procedures Questions and Answers

Question 1

A maintenance technician is called to address a recurring failure on a critical production conveyor. After a temporary fix, what is the most crucial next step in the corrective maintenance process to ensure long-term reliability?

Accepted Answer

Perform a Root Cause Analysis (RCA) to identify the underlying issue.

Answer

While documenting time, ordering parts, and scheduling future PMs are parts of maintenance, the most critical step after a recurring failure is to perform a Root Cause Analysis (RCA). RCA techniques like the '5 Whys' help to uncover the fundamental reason for the failure, moving beyond just treating the symptom. This proactive step is essential for developing a permanent solution and preventing the same issue from happening again.

Question 2

When prioritizing corrective maintenance work orders, which two factors are most commonly used to determine the urgency and scheduling of the repair?

Accepted Answer

Asset criticality and the failure's impact on safety and production.

Answer

Effective prioritization of corrective maintenance tasks hinges on understanding the importance of the equipment and the consequences of its failure. Asset criticality (how vital the machine is to the overall operation) and the impact of the failure (on safety, production, quality, etc.) are the primary factors used to create a priority matrix and decide which jobs must be addressed first.

Question 3

A technician is preparing to perform corrective maintenance on a piece of equipment that has been electrically de-energized and locked out. After applying the lock and tag, what is the essential next step before starting the repair?

Accepted Answer

Verify the isolation and absence of all energy sources.

Answer

According to standard Lockout/Tagout (LOTO) procedures, after applying the lock and tag to the energy-isolating device, the authorized employee must verify that the equipment is truly de-energized. This involves attempting to start the equipment or using a testing device to ensure all hazardous energy, including stored energy, has been dissipated or controlled. This step confirms the lockout was successful before any work begins.

Question 4

Which of the following best defines corrective maintenance?

Accepted Answer

Unscheduled maintenance tasks performed to identify, isolate, and rectify a fault to restore failed equipment to an operational state.

Answer

Corrective maintenance, also known as breakdown or reactive maintenance, is performed after a failure has occurred to restore the asset to its operational condition. Its primary goal is to fix the problem and minimize downtime after a malfunction has been detected. The other options describe preventive, predictive, and reactive (run-to-failure) maintenance strategies, respectively.

Question 5

During a corrective maintenance task, a technician discovers that a specific bearing fails repeatedly due to contamination from a nearby process. In addition to replacing the bearing, what is the most effective long-term corrective action?

Accepted Answer

Recommend a design modification, such as installing a better seal or shield.

Answer

The goal of effective corrective maintenance is not just to fix the immediate problem but to prevent its recurrence. While increasing PM frequency or stocking parts are reactive measures, addressing the root cause (contamination) with a design modification like an improved seal is a proactive, permanent solution that eliminates the source of the failure.

(CMRT) Certified Maintenance and Reliability Technician Practice Test

(CMRT) Certified Maintenance and Reliability Technician Practice Test

CMRT - Certified Maintenance and Reliability Technician Corrective Maintenance Procedures Questions and Answers