Maintenance Management

Rohit BishtMBA O&G (2nd Year)

INTRODUCTIONAll actions necessary for retaining an item, or restoring to it, a serviceable condition, include servicing, repair, modification, overhaul, inspection and condition verification

The design life of each equipment's requires periodic maintenance.

OBJECTIVES• Minimize loss of productive time• Minimize repair time & cost• Keep productive assets in working condition• Minimize accidents• Minimize total maintenance cost• Improve quality of products

AREAS OF MAINTENANCE1. Civil maintenance- Building construction and maintenance,

maintaining service facilities2. Mechanical Maintenance- Maintaining machines and equipment's,

transport vehicles, compressors and furnaces.3. Electrical Maintenance- Maintaining electrical equipment's such as

generators, transformer, motors, telephone systems, lighting, fans, etc.

TYPES OF MAINTENANCE• Breakdown maintenance or corrective maintenance• Preventive maintenance• Predictive maintenance• Routine maintenance• Planned maintenance

BREAKDOWN MAINTENANCE

• Occurs when there is a work stoppage due to machine breakdown• Maintenance becomes repair work• Seeks to get the equipment back into operation as quickly as possible

PREVENTIVE MAINTENANCE• It is undertaken before the need arises and aims to minimize the

possibility of un -anticipated production interruption or major breakdowns.

ROUTINE MAINTENANCE• Includes activities such as periodic inspection, cleaning, lubrication

and repair of production equipment's after their service life.

PLANNED MAINTENANCE• It involves the inspection of all plant and equipment's, machinery,

buildings according to a predetermined schedule in order to service overhaul, lubricate or repair, before actual break down or deterioration in service occurs.

PREDICTIVE MAINTENANCE• In this, sensitive instruments(eg. vibration analyzers, amplitude

meters, audio gauges, optical tooling and resistance gauges) are used to predict trouble. Conditions can be measured on a continuous basis and this enables the maintenance people to plan for an overhaul.

Maintenance Costs

Maintenance Commitment

Cost

Breakdown Cost

Maintenance Costs

Maintenance Commitment

Cost

PM Cost

Breakdown Cost

Maintenance Costs

Maintenance Commitment

Cost

PM Cost

Breakdown Cost

Total Maintenance Cost

Maintenance CostsTotal costs

Breakdown maintenance costs

Cost

s

Maintenance commitment

Traditional View

Preventive maintenance costs

Optimal point (lowestcost maintenance policy)

Cost and Operational Impact of Maintenance

PLANNED MAINTENANCE

BREAKDOWN MAINTENANCE

PREDICTIVE MAINTENANCE

PREVENTIVE MAINTENANCE

ROUTINE INSPECTION

Little Substantial

Cost

of M

aint

enan

ce