What is Preventive Maintenance?

What is preventive maintenance?

Preventive maintenance interventions are carried out to prevent the occurrence of failures and to monitor the performance of equipment.

How does it work?

Planned maintenance is performed on equipment, without considering the ‘live’ operating condition as is the case in Predictive Maintenance, and aims to avoid the occurrence of failures and and to mitigate the consequences of equipment breakdowns.

It is most suitable for high priority assets which the company is dependent upon for the smooth running of operations. Equally, this type of strategy is best applied to high value devices and machinery which will be more expensive to repair. 

Preventive work is performed cyclically and is usually determined by either time (e.g.: every 6 months), events (e.g.: every 500 uses), or meter readings (e.g.: every 3,000 miles). Limits are usually established based on statistics about the expected or average life of the equipment.

What are the advantages and disadvantages?

This approach has many advantages over Corrective Maintenance, which is only performed when equipment failures or breakdowns are reported. Firstly, it extends the lifetime and the reliability of the company’s equipment and helps to avoid unplanned periods of downtime which will also reduce long-term costs.

If you’d like to know more about this, check out our article about the advantages of Preventive vs. Corrective Maintenance.

The main issue with Preventive Maintenance is that the data used data is not based on the current condition of  equipment. This can result in misaligned maintenance actions, such as part replacements, that are unnecessary and still cost time and money.

One solution which does not pose this problem is Predictive Maintenance, although it’s implementation is more costly.  You can read about the difference between these two approaches here.

Learn more about this and other maintenance-related subjects on Infraspeak’s Complete Guide to Maintenance!

How to adopt this strategy?

To adopt Preventive Maintenance as your main strategy, you’ll need to prepare a Preventive Maintenance Plan. At least once a year, the Maintenance Manager produces a document which includes a list of equipment and the periods in which they must be checked throughout the year: monthly, bi-monthly, semi-annual, annual. Tasks and interventions can be assigned from this point.

Did you know?

A Computerised Maintenance Management System can help you create, manage and evaluate a Preventive Maintenance Plan, as well as your overall maintenance strategy. The Infraspeak CMMS provides you with a multitude of features including failure reporting, asset and work order management, cost management, and more.

Do you think you may need a CMMS? Here are 5 signs you should invest in one and how it can help you save money.

To know more, schedule a free demonstration.