CMRT - Certified Maintenance and Reliability Technician Corrective Maintenance Procedures Questions and Answers 1 — 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?
- Close out the work order and document the time spent.
- Perform a Root Cause Analysis (RCA) to identify the underlying issue. (Correct answer)
- Immediately order a replacement for the entire conveyor system.
- Schedule preventive maintenance on the conveyor for the following week.
Correct answer: Perform a Root Cause Analysis (RCA) to identify the underlying issue.
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?
- Technician availability and the cost of spare parts.
- The age of the equipment and the date the work order was submitted.
- Asset criticality and the failure's impact on safety and production. (Correct answer)
- The time since the last preventive maintenance check and operator preference.
Correct answer: Asset criticality and the failure's impact on safety and production.
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?
- Notify the area supervisor that the repair is about to begin.
- Verify the isolation and absence of all energy sources. (Correct answer)
- Gather all necessary tools and spare parts at the job site.
- Review the equipment's maintenance history in the CMMS.
Correct answer: Verify the isolation and absence of all energy sources.
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?
- Scheduled maintenance activities, including inspections and lubrication, to prevent failures.
- A data-driven strategy that uses condition monitoring to predict when a failure will occur.
- A 'run-to-failure' approach where no maintenance is performed until a complete breakdown.
- Unscheduled maintenance tasks performed to identify, isolate, and rectify a fault to restore failed equipment to an operational state. (Correct answer)
Correct answer: Unscheduled maintenance tasks performed to identify, isolate, and rectify a fault to restore failed equipment to an operational state.
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?
- Increase the frequency of bearing replacement on the PM schedule.
- Stock more of the specific bearing to reduce repair time.
- Recommend a design modification, such as installing a better seal or shield. (Correct answer)
- Train operators to listen for bearing noise more carefully.
Correct answer: Recommend a design modification, such as installing a better seal or shield.
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.
Question 6: A maintenance planner is creating a work order for a corrective maintenance task. To ensure the technician can complete the job efficiently and safely, which of the following is LEAST critical to include in the initial work order package?
- The asset's full maintenance history from the last five years. (Correct answer)
- A clear description of the reported problem and asset location.
- A list of required spare parts, tools, and necessary safety permits.
- The priority level of the task based on asset criticality and failure impact.
Correct answer: The asset's full maintenance history from the last five years.
While the full maintenance history can be useful for complex troubleshooting, it is the least critical item for the initial work order dispatch. The most critical information needed to start the job includes a clear problem description and location, a list of needed resources (parts/tools) and safety requirements, and the assigned priority level to manage time effectively. The technician can typically access detailed history later through a CMMS if needed.
CMRT - Certified Maintenance and Reliability Technician Corrective Maintenance Procedures Questions and Answers 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?