by sachin sharma manipal jaipur

1. MAINTENANCE
MANAGEMENT

2. Definition:
A formal definition of maintenance is
“that function of manufacturing
management that is concerned with day
to day problem of keeping the physical
plant in good operating condition”

3. 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

4. Importance:
• Dependability of service
• Assured quality
• Prevent equipment failure
• Cost control
• Huge investment in equipment

6. Areas of Maintenance:
1. Civil maintenance- Building construction
and maintenance, maintaining service
facilities
2. Mechanical Maintenance- Maintaining
machines and equipments, transport
vehicles, compressors etc.
3. Electrical Maintenance- Maintaining
electrical equipments such as generators,
transformer, motors, telephone systems,
lighting, fans, etc.

10. Preventive management
It is undertaken before the need arises
and aims to minimize the possibility of un
-anticipated production interruption or
major breakdowns.

12. 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
• To control the investment in
replacement spare machines.

13. • Predictive maintenance:
In this, sensitive intruments(eg.vibration
analysers,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 (repair).

14. • Routine maintenance: this includes
activities such as periodic
inspection,cleaning,lubrication and
repair of production equipments after
their service life.

15. • Planned maintenance: it involves the
inspection of all plant and
equipments,machinery,buildings
according to a predetermined schedule
in order to service overhaul, lubricate or
repair, before actual break down or
deterioration in service occurs.

16. CONTROL OF MAINTENANCE
1. Authorized by an official
2. Maintenance schedule
3. Issue materials against proper
authorization
4. Maintenance budgets
5. Equipment records

17. Issues:
• how much maintenance is needed?
• What size maintenance crews must be
used?
• Can maintenance be sub-contracted?
• Should maintenance staff be covered
by wage incentive schemes?
• Can effective use be made of
computers for analyzing and
scheduling activities?

18. Maintenance has to be taken into consideration in very early
stage of work of procuring new equipment to ensure a good
and cheap operation.
High quality equipment will give high reliability and
maintainability which secure high productivity and equipment
efficiency.
The lifetime of the equipment can be spilt up in six phases
1.Idea
2.Specification
3.Design
4.Procurement(Manufacturing)
5.Operation
6.Windup

20. Failure Rate: The frequency with which a piece
of equipment breaks down during the intended
use of its life cycle.
Phase I: Manifestation of defective designs,
improper manufacturing practices resulting in
uneven stress distribution, defects in assembly
resulting in failure, defects in materials,
improper operation by workers etc.

21. Phase II: constant failure rate, useful life,
maximize this phase in order to make maximum
use of equipment.
Phase III: Increases failure rates, replacement
required.