CMRP - Certified Maintenance and Reliability Professional MRO Spares Management Questions and Answers 1 — Questions and Answers
Question 1: A plant is experiencing frequent production delays due to stockouts of maintenance parts. To address this, management wants to track the effectiveness of the MRO storeroom in fulfilling maintenance requests on time. Which of the following KPIs is the MOST direct measure of this objective?
- Inventory Turns
- Inventory Carrying Cost
- Service Level (Fill Rate) (Correct answer)
- Total Inventory Value
Correct answer: Service Level (Fill Rate)
Service Level, or Fill Rate, directly measures the percentage of time a requested item is available in the storeroom when it is needed. This KPI is the most direct indicator of the storeroom's ability to support maintenance activities and prevent downtime caused by part unavailability. While the other options are important financial metrics, they do not directly measure the immediate availability of parts to the maintenance team.
Question 2: A reliability engineer needs to classify MRO inventory to prioritize management efforts. The goal is to focus the most control on the items that represent the highest annual consumption value. Which inventory classification method should be used?
- FSN (Fast, Slow, Non-moving) Analysis
- VED (Vital, Essential, Desirable) Analysis
- XYZ Analysis
- ABC Analysis (Correct answer)
Correct answer: ABC Analysis
ABC Analysis is a method of classifying inventory based on consumption value (annual usage quantity multiplied by unit cost). It applies the Pareto principle, where 'A' items are the small number of high-value items that account for the majority of the total spend, 'B' items are of moderate value, and 'C' items are the large number of low-value items. This allows for focused management effort on the most significant items ('A' items).
Question 3: In managing MRO spares, what is the primary purpose of maintaining accurate Equipment Bills of Materials (BOMs) within a CMMS?
- To automate the purchasing process with suppliers.
- To provide a direct link between an asset and the specific spare parts required to maintain it, improving planning accuracy. (Correct answer)
- To calculate the total depreciation value of all spare parts associated with an asset.
- To track the real-time location of every spare part within the storeroom.
Correct answer: To provide a direct link between an asset and the specific spare parts required to maintain it, improving planning accuracy.
An accurate Equipment BOM is a hierarchical list of all the repairable and replaceable parts for a specific piece of equipment. Its primary purpose in a CMMS is to enable maintenance planners to quickly and accurately identify the correct parts needed for a work order, which streamlines the planning process, reduces errors, and ensures the correct parts are reserved or ordered.
Question 4: Which of the following describes the best strategy for managing a 'critical spare'—a part that has a very long lead time and whose absence would cause a catastrophic production shutdown, even though it may never have been used?
- Procure the part using a Just-In-Time (JIT) strategy to minimize carrying costs.
- Order the part only after a confirmed failure to avoid unnecessary inventory.
- Hold the item in inventory, ensure it is stored under optimal preservation conditions, and regularly verify its existence and condition. (Correct answer)
- Rely on an emergency procurement process with a local supplier.
Correct answer: Hold the item in inventory, ensure it is stored under optimal preservation conditions, and regularly verify its existence and condition.
Critical spares are managed based on risk, not turnover. Because the consequence of a stockout is extreme and the lead time is long, the best strategy is to hold the part in inventory, even if it is expensive and rarely used. Proper storage and preservation are essential to ensure the spare is in perfect condition when needed, and periodic verification confirms it hasn't been misplaced or used without documentation.
Question 5: A storeroom manager wants to improve inventory record accuracy without shutting down operations for a full wall-to-wall physical inventory count. Which of the following methods should be implemented?
- Kitting and Staging
- Cycle Counting (Correct answer)
- Min-Max Replenishment
- Vendor-Managed Inventory (VMI)
Correct answer: Cycle Counting
Cycle Counting is an inventory auditing procedure where a small subset of inventory is counted on a specified schedule. This continuous process allows for the correction of inventory record errors as they are found, gradually improving overall accuracy without the massive disruption of a full physical inventory. It is a best practice for maintaining high inventory record accuracy.
Question 6: During a review of an aging facility, a maintenance manager discovers that the programmable logic controller (PLC) for a critical production line is obsolete. The original manufacturer no longer produces the PLC or its components. This situation represents a significant risk of extended downtime. What is this type of MRO risk called?
- Stockout Risk
- Lead Time Risk
- Obsolescence Risk (Correct answer)
- Carrying Cost Risk
Correct answer: Obsolescence Risk
Obsolescence Risk is the risk that a part, component, or technology is no longer manufactured or supported by the original supplier. This poses a major threat because if the existing part fails, a direct replacement is not available, potentially leading to extremely long downtimes while an alternative solution is engineered and implemented. Proactive obsolescence management is a key part of MRO strategy.
CMRP - Certified Maintenance and Reliability Professional MRO Spares Management Questions and Answers 1
A plant is experiencing frequent production delays due to stockouts of maintenance parts.
To address this, management wants to track the effectiveness of the MRO storeroom in fulfilling maintenance requests on time.
Which of the following KPIs is the MOST direct measure of this objective?