Maintenance Management

GROUP MEMBERS Niaz Mohammad Sahil group leader

Ahmadullal Alizaifayz Al Bary FaieqShafiqullah AlokozaiAli Ahmad Ahmady Niaz Mohammad Sahil

Maintenance Management Modern maintenance management is

not to repair broken equipment rapidly. Modern maintenance management is to keep the equipment running at high capacity and produce quality products at lowest cost possible.

Maintenance is a set of organized activities that are carried out in order to keep the item in its best operational condition with minimum cost required.

Maintenance ObjectivesEfficient use of maintenance personnel and

equipments.Maximize useful life of equipment To increase functional reliability of production

facilities. To enable desired quality through correctly

adjusted, serviced and operated equipment's. To maximize the useful life of equipment's. To minimize cost of production. To minimize frequency of interruptions. To enhance the safety of manpower.

Areas of maintenance management

Civil MaintenanceMechanical maintenanceElectrical Maintenance

Impact of Poor Maintenance

1. Production capacity:Machines idled by breakdowns cannot produce, thus

the capacity of the system is reduced2. Production costs:Labor costs per unit rise because of idle labor due to

machine breakdowns. When machine malfunctions result in scrap, unit labor and material costs increase.

3. Product and service quality:Poorly maintained equipment's produce low quality

products. Equipment's that have not been properly maintained have frequent break downs and cannot provide adequate service to customers.

CONT…4. Employee or customer safety:Worn-out equipment is likely to fail at any moment

and these failures can cause injuries to the workers, working on those equipments. Products such as two wheelers and automobiles, if not serviced periodically, can break down suddenly and cause injuries to the stress

5. Customer satisfaction:When production equipments break own, products

often can not be produced according to the master production schedules, due to work stoppages. This will lead to delayed deliveries of products to the customers.

Main

tenan

ce

Planned Maintenance

Preventive Maintenance

Running maintenance

Shutdown maintenance

Scheduled maintenance

Corrective Maintenance

Breakdown maintenance

Shutdown maintenancePredictive

Maintenance

Unplanned maintenance

Emergence maintenance

TYPES OF MAINTANANCE M

planned maintenance

In planned maintenance the maintenance action is carried out with some fore thoughts, prior planning , record keeping and control action. These can be further classified as :-

Preventive maintenanceCorrective maintenancePredictive maintenance

A: Preventive maintenance

It is based upon the principle that ‘prevention is better than cure’.

Involves performing maintenance activities before the equipment fails.

It is a set of activities that are performed on plant equipment, machinery, and systems before the occurrence of a failure in order to protect them and to prevent or eliminate any degradation in their operating conditions.

Or the maintenance carried out at predetermined intervals or according to prescribed criteria and intended to reduce the probability of failure or the degradation of the functioning and the effects limited.

It has three types Running maintenance Scheduled maintenance Shut down maintenance

CONT..1:Scheduled maintenanceTime based maintenance consists of periodically

inspecting, servicing and cleaning equipment and replacing parts to prevent sudden failure and process problems.

2:RUNNING MAINTENANCE:

It is a scheduled service visit carried out by an agent, to ensure that an item of equipment is operating correctly and to therefore avoid any unscheduled breakdown and downtime. 

3:shutdown maintenanceThat can only be performed when the equipment,

machine, or plant has been put out of service.

B: Corrective maintenance In this type, actions such as repair, replacement, or restore

will be carried out after the occurrence of a failure in order to eliminate the source of this failure or reduce the frequency of its occurrence.

It also include the different types of actions like typical adjustment of redesign equipment.

The difference between corrective maintenance and preventive maintenance is that for the corrective maintenance, the failure should occur before any corrective action is taken.

It is of two types1. Breakdown maintenance2. Shutdown maintenance

CONT…1. Breakdown maintenance It means that people waits until equipment

fails and repair it. Such a thing could be used when the equipment failure does not significantly affect the operation or production or generate any significant loss other than repair cost.

2:shutdown maintenanceThat can only be performed when the

equipment, machine, or plant has been put out of service.

C: Predictive maintenance:As the names implies it involves the

prediction of the failure before it occurs, identifying the root cause for those failures symptoms and eliminating those causes before they result in extensive damage of the equipment.

Type of maintenance performed continuously or at intervals according to the requirements to diagnose and monitor a condition or system.

2: Unplanned Maintenance:

Maintenance action which is carried out without any fore thoughts or prior planning is called unplanned maintenance.

Emergency maintenance is one of the example of unplanned maintenance.

In this type of maintenance the maintenance action is executed with the help of all available maintenance resources in least possible time, without any major time lag.

Examples are gas leakage in chemical plant, fire hazards, breakdown of boiler, turbine etc.

• PREPARED BY • NIAZ SAHIL ZURMATI STUDENT OF: BBA AT KABUL

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Kabul

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2015-16