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3...maintenance management
1. MAINTENANCE
MANAGEMENT
Submitted to:- Submitted by:-
Dr. Mini Swapnil chatterjee
Sekharan 3rd sem, SIF, CUSAT
2. INTRODUCTION
The design life of each equipments
requires periodic maintenance.
The objectives of maintenance
management are ---
To maintain the equipments in its best
operating condition with economical cost.
Extending the life of the equipment to its
design.
Types of Maintenance Management are
---
Breakdown or Reactive Maintenance,
Preventive Maintenance and
Predictive Maintenance.
3. Reactive Maintenance
Run it till it breaks Maintenance Mode.
Advantages:---
Low investment cost for Maintenance.
Less staff is required.
Dis--advantages:---
In-efficient use of staff.
Waiting for the equipment to break is responsible for
shortening of the life of the equipment causes more frequent
replacement with high replacement cost.
To repair the critical piece of equipment and to bring it in
action very quickly, the maintenance overtime cost occurs.
Primary equipment damage due to absence of Preventive
Maintenance causes also Secondary equipment or Process
damage ensuring more additional costs.
4. Preventive Maintenance
Actions performed on a time or machine run based schedule
that detect, preclude or mitigate degradation of a component
or system with the aim of sustaining or extending its useful
life through controlling degradation to an acceptable level.
Advantages:- Dis-advantages:-
Equipment life is extended Catastrophic failures still
and its reliability increased.
Energy savings. likely to occur.
12%-18% cost savings over Performance of unneeded
Reactive Maintenance Maintenance.
program. Potential for incidental
damage to components in
conducting unneeded
Maintenance.
5. Predictive Maintenance
Measurements that detects the onset of a degradation
mechanism, thereby allowing casual stressors to be
eliminated or controlled prior to any significant
deterioration in the component physical state.
Predictive Maintenance differs from the Preventive
Maintenance based on the Maintenance need on the
actual condition of machine rather than on some pre-set
schedule.
Advantages:- Dis-advantages:-
Increased component life.
Decrease in costs for parts
Increased
and labour. investment in staff
Better product quality.
training.
Energy savings.
Improved worker and
Savings potential not
environmental safety. readily seen by
Estimated 8%-12% cost management.
savings over Preventive
Maintenance program.
6. Maintenance Planning
Maintenance Planning is done to find the
answer of What & how is the job and
where the job is to be done.
It is depended on the Efficiency and Cost
of action.
Persons involved in Maintenance Planning
should have the Knowledge about jobs,
7. Steps of Maintenance Planning
The main steps to be followed for proper Maintenance Planning are
--------
Knowledge Base:- It includes knowledge about equipment,
job, available techniques, materials and facilities.
Job Investigation at the site:- It gives the clear perception of
the total jobs.
Identify and Document the work:- Knowing the earlier two
steps and knowing the needs of Preventive , Predictive and other
Maintenance jobs.
Development of repair plan:- Preparation of step by step
procedures which would accomplish the work with the most
economical use of time, manpower and material.
Preparation tools and facilities list indicating the needs of
special tools, tackles and facilities needed.
Estimation of time required to do the job with work
measurement technique and critical path analysis.
8. Maintenance Scheduling
Scheduling is the function of coordinating all
of the logistical issue around the issues
regarding the execution phase of work.
