Now that you’ve implemented a preventive maintenance (PM) plan, what comes next? Few facilities realize that preventive maintenance plan implementation is only a step in a continuous cycle that is preventive maintenance. And, many PM programs fail because they stop at planning and implementation steps.
Successful PM programs, on the other hand, perform the necessary evaluation step after the implementation of the PM plan. By evaluating your PM, you can gauge whether your plan is working to your advantage or wasting precious resources on ineffective maintenance. Furthermore, evaluating the effectiveness of a PM plan lets you identify the areas in need of improvement when revising your PM plan.
In this article, we look at the four performance indicators that you can measure to evaluate the effectiveness of your preventive maintenance plan.
Percentage of Planned Maintenance
The percentage of planned maintenance is the amount of planned maintenance with respect to the total amount of maintenance performed over a period. This indicator is calculated using this formula:
% Planned Maintenance = (Planned Maintenance in Hours / Total Maintenance in Hours) X 100
A high percentage of planned maintenance means that your maintenance is focused more on planned maintenance and less on reactive or emergency maintenance. Percentage values for planned maintenance of 85% and above are considered acceptable. These values indicate that your maintenance program is efficient and cost-effective.
A low percentage of planned maintenance means that your PM plan is not yet successful in making your technicians proactive in their maintenance steps. It takes some time for these values to improve, so don’t get discouraged if your percentage of planned maintenance is still below the 85% minimum. As long as there is an increasing trend for the values of this indicator, that’s an excellent sign telling you to keep doing what you’re doing.
Rate of Preventive Maintenance Compliance (PMC)
The rate of preventive maintenance compliance is another measure of the efficiency of a preventive maintenance plan. This indicator is calculated by dividing the total number of maintenance tasks executed by the number of planned tasks (see formula below):
PMC = (Number of Executed Maintenance Tasks / Number of Planned Tasks) X 100
A high PMC value means most of the maintenance tasks you perform complies with your plan. Values of 90% or higher for PMC indicate that your PM plan is being implemented as planned.
Low PMC values mean that your PM plan has low compliance. Review your plan and look into the possible reasons for low compliance. Look into the availability of technicians, materials, and other resources as causes for low PMC. You can also consider streamlining your process for faster creation and execution of work orders.
Percentage of Skipped Preventive Maintenance
Related to PMC, the percentage of skipped PM focuses on uncompleted maintenance tasks. The percentage of skipped PM is calculated in the formula below:
% Skipped PM = (Number of Skipped Maintenance Tasks / Number of Planned Tasks) X 100
Skipped PMs are tasks that are not postponed or rescheduled. A high percentage of skipped PM also indicates the maintenance program’s inability to meet planned tasks due to the lack of resources or slow and error-prone processes.
Scheduled Maintenance Critical Percentage (SMCP)
The last on our list of preventive maintenance plan performance indicators, the SMCP is simply the percentage of planned maintenance tasks that are being done late. This indicator measures the risk of having overdue maintenance tasks which can affect the longevity and health of your assets.
To calculate the SMCP, you must know the task cycle or how many days before the PM task is repeated. You also need to know the number of days the task is executed late. Compute the SMCP using the formula below:
SMCP = (Number of Days Late + Task Cycle in Days) / (Task Cycle in Days) X 100
Higher SMCP values mean the maintenance task is more critical to complete than those with a lower SMCP value. Thus, this task must be prioritized. If all SMCP values of your assets are high and are constantly increasing, this means that you are falling behind in complying with your preventive maintenance plan. If so, it’s time you review your plan and devise possible improvements.
Preventive Maintenance Plan Evaluation with CMMS
Evaluating the effectiveness of your PM plan is an essential but complicated task. Luckily, there are technologies available today that can help with gathering information, analyzing data, and storing results for future reference. One such valuable tool is a computerized maintenance management system (CMMS).
An all-in-one CMMS software like Redlist helps you manage and evaluate your preventive maintenance in an easy-to-use interface. Redlist’s cloud-based storage and powerful computing functions let you store and analyze data with the touch of a finger for faster decision-making.
Preventive maintenance doesn’t need to be complicated. Schedule a free demo to experience Redlist today!
