Writing PMs

Clear and Definitive PMs (Quick Tip)


PM's should have a definitive task to address each failure mode for any given piece of equipment. This definitive task should produce an indication of a minor abnormality before it becomes a full blown problem; this strategy would allow us to prepare a job plan for corrective maintenance before the equipment fails. This type of maintenance will produce the reliability necessary to move a company to World Class and show the contribution of maintenance.

If you have any maintenance and reliability tips you would like to share please leave them in the comment box below.  


Writing an Effective PM - Five Simple Steps

Each and every PM (Planned Maintenance) task should include all 5 steps to ensure that the work is completed as required.

Planned Maintenance - Image

  1. What is to be done? Start with an action word (e.g. Lubricate, Listen, Touch, Feel, Obtain readings)
  2. How is it to be done? Describe in detail how you want the procedure carried out. Is there a particular way to perform the procedure? Is there a particular order in the way the procedure should be performed? Do instruments have to be in a particular position to obtain the correct reading?
  3. What is acceptable? If the craftsman is going to meggar a motor, at what reading should the craftsman be concerned? If the craftsman is performing vibration analysis, is there an absolute reading that is unacceptable?
  4. What course of action should the craftsman take if the results are unacceptable? A motor that meggars at 1500 ohms should not be started for any reason. A belt at start-up that slips so badly it releases a cloud of smoke and burnt rubber should not be left in running condition. If the lubricant level is below a certain point, it must be replenished. In many cases the craftsman should contact his immediate supervisor if the condition is outside acceptable limits. In other cases, just noting the anomaly on the PPM work order is sufficient.