Maintenance Management

1. Maintenance Management

2. Maintenance Management
Maintenance is how organizations try to avoid failure by taking care of
their physical facilities. It is an important part of most operations’
activities particularly in operations dominated by their physical facilities
such as power stations, hotels, airlines and petrochemical refineries.

3. Benefits of Maintenance
• Enhanced safety
• Increased reliability
• Higher quality (badly maintained equipment is more likely to cause
errors)
• Lower operating costs (because regularly serviced process technology is
more efficient)
• A longer lifespan for process technology, and
• Higher ‘end value’

4. Maintenance Management
Types
• Preventive Maintenance
• Breakdown Maintenance / Remedial Maintenance
• Corrective Maintenance
• Condition Monitoring

5. Maintenance Management
Preventive Maintenance
Preventive maintenance is a procedure designed to prevent failures
and prolong the life of infrastructure, facilities, machines, software and
other entities such as documents. The term is used to distinguish regular
or precautionary maintenance from fixing things that are broken.
The act of keeping equipment in specified condition is known as
preventive maintenance.

6. The following are illustrative examples of preventive maintenance.
• Oil changes
• Greasing
• Changing filters
• Belt tightening
• Anything that increases life of equipment, and helps it runs more efficiently
• The engines of passenger aircraft are checked, cleaned and calibrated according to
a regular schedule after a set number of flying hours
• The regular cleaning and lubricating of machines, even the periodic painting of a
building

7. Preventive Maintenance also known as
- Running maintenance (in service)
- Shutdown maintenance (out of service)
- Servicing (minor activities cleaning, lubrication)
- Scheduled maintenance (scheduled intervals of time)

8. Maintenance Management
Breakdown Maintenance
Maintenance work is performed only after failure has taken place.
• Also called as
- Operate-to-failure maintenance
- Fire-fighting maintenance
- Unplanned maintenance

9. - In this system the equipment is allowed to function / operate till no
failure occurs i.e. no maintenance work is carried out in advance to
prevent the failure. As long as the equipment is functioning at a
minimum acceptable level, it is assumed to be effective. This means
the people wait till the equipment fails and repair. This approach of
maintenance is ineffective and extremely expensive.
Example, the televisions, bathroom equipment and telephones in a
hotel’s guest rooms

10. Maintenance Management
Corrective Maintenance
Corrective maintenance is the process of fixing things that are broken or not
performing well. It is often compared to preventive maintenance, the process of
fixing things before they break.
The act of restoring the equipment is known as corrective maintenance.
The following are illustrative examples of corrective maintenance.
• Emergency Repair - Urgent repairs such as a broken elevator filled with people.
• Service Outages - Restoring services that are down. For example, restoring a
stock trading platform that is down.

11. • Repair - Repairing things that are broken such as fixing a solar system by
replacing a broken module.
• Performance - Maintenance designed to restore something to optimal
performance. For example maintenance on a software service that is
running slowly.
• Quality - Correcting poor quality. For example, maintenance on a bullet
train to correct vibrations that is causing noise and passenger discomfort.

12. Maintenance Management
Condition Monitoring
Condition monitoring is the process of monitoring a parameter
of condition in machinery (vibration, temperature etc.), in order to
identify a significant change which is indicative of a developing fault. It
is a major component of predictive maintenance.