Wednesday, May 27, 2020

What is preventive maintenance


Preventive maintenance


Preventive maintenance is a proactive type of maintenance in its action is taken before breakdown maintenance and prevents failure of machines and also saves from equipment downtimes. 
Preventive maintenance could be done like as weekly, monthly, quarterly, half-yearly, yearly some time also use a quote (prevention is better than cure) for preventive maintenance many types of action to be taken to save unexpected machines failure. That is mention below.

  • Periodically lubrication to change
  • Daily LLF (look listen to feel) activity and fill up checklists
  • Periodically inspection of the machine and its accessories
  • Overhauling and parts replacement if needed
  • Condition monitoring of equipment
  • Maintains equipment history record of all type of maintenance has done  


Type of preventive maintenance


There are two types of preventive maintenance


1.       Time-based maintenance

2.       Uses biased maintenance


preventive maintenance





Time-based maintenance

It is period maintenance like lube oil change, bearing change, grease change, wearing change and etc. it is totally based on the life of the equipment part has been gone or wear out as expected time as per designer. everything existed in the world has some life on the based of this we decided to maintenance.

Advantages and disadvantages of preventive maintenance


Advantages of preventive maintenance


1.       Save from catastrophic failure.
2.       Reduce the downtime of equipment.
3.       Planned maintenance (available all resources).
4.       Improve the quality and reliability of equipment.
5.       Breakdown happens at the expected time.
6.       Increase production rate.

            Disadvantages of preventive maintenance

  1.         Loss of resources.
  2.        Maintenance Cost goes up.
  3.        Unneeded maintenance of equipment.
  4.        Labour intensive.

What is the difference between preventive and breakdown maintenance?


The main difference between is breakdown maintenance is upland maintenance sometimes the catastrophic failure occurs, spare unavailability whereas preventive maintenance is planed every resource is available and reduce downtime of equipment, increase production.




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