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Preventative Maintenance

Definition - What does Preventative Maintenance mean?

Preventive maintenance is the systematic maintenance and servicing of machines and facilities so as to provide satisfactory operating conditions. It is achieved through methodical inspection, and finding and correcting developing failures before they actually happen.

Safeopedia explains Preventative Maintenance

Preventive maintenance is performed on a schedule, which detects and lessens the degradation of components and systems. Preventative maintenance has the aim of increasing reliability, saving costs from major failure or down time, reducing the risk of failure and extending the life of machine or facilities. It may save an estimated 12% to 18% cost over a reactive maintenance program. Preventive maintenance cannot assure escape from catastrophic failures and sometimes may seem to be unnecessary.

Preventative maintenance includes test operations as per design, diagnosis, replacing worn out parts, measurements, lubricating, tightening and adjustments.

Preventive maintenance can be of two main types:

  • Planned maintenance - regular proactive failure management on run-time or life-time of the machine or facility
  • Condition based maintenance - maintenance based on expert advice on measured values and performance indications
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