Maintenance is the process of keeping machines and equipment in good working condition through actions like inspection, repair, overhaul, and lubrication. The goals are to retain efficiency, increase equipment life, and prevent breakdowns. There are different maintenance approaches - breakdown maintenance only repairs equipment after failures, while preventive maintenance inspects weak points regularly to avoid issues. Scheduled maintenance follows supplier recommendations and predetermined schedules. Proper maintenance provides benefits like increased equipment life, on-schedule production, quality products, and reduced costs and accidents.

1. BY
SHEREEN SHAHANA & MARY JASMINE D

2.  MAINTENANCE IS THE PROCESS OF KEEPING
MACHINE AND EQUIPMENT IN GOOD WORKING
CONDITION SO THAT THE EFFICIENCY IS
RETAINED AND ITS LIFE IS INCREASED.
 IT’S A COMBINATION OF ACTIONS CARRIED
OUT BY AN ORGANIZATION TO
REPLACE,REPAIR,SERVICE THE
MACHINES,COMPONENTS OR THEIR GROUPS
IN A MANUFACTURING PLANT,SO THAT IT WILL
CONTINUE TO OPERATE SATISFACTORILY.

3. a) INSPECTION
b) REPAIR
c) OVERHAUL
d) LUBRICATION
e) SALVAGE

4.  PERIODIC CHECKING OF MACHINES
 GIVING PROPER ATTENTION TO THOSE
EQUIPMENTS REQUIRED WORK IN INTERVALS
 DETERMINATION OF REPAIR FEASIBILITY
 CONTROL OF QUALITY WORK
 DETECTION OF FAULTS BEFORE BREAKDOWN
OF EQUIPMENT

5.  PROCESS OF REPARING THE COMPONENT OR
REPLACING THE ITEM OR PART BY ANOTHER
ITEM TO RESTORE FAILED OR BROKEN DOWN
ITEM IN WORKING ORDER.

6.  FALLS UNDER PREVENTVE MAINTENANCE .
 FREQUENCY OF OVERHAULING IS LESS THAN
LUBRICATION AND INSPECTION.
 HERE THE MACHINE IS STRIPPEDAND THE VARIOUS PARTS
ARE CLEANED AND OILED AND COMPONENTS ARE
REPLACED.

7.  HELPS IN MAINTAINING THE MACHINE
ACCURACY AND INCREASE LIFE OF MACHINE.
 IT IS DONE BY THE OPERATOR ITSELF.
 LUBRICATION CAN BE
DAILY,WEEKLY,FORTNIGHTLY,MONTHLY.

8.  DIFFERENT MAINTENANCE PRATICES ARE
ADOPTED TO SUIT THE VARIOUS TYPES OF
PRODUCTION MACHINERIES AND OTHER
DEVICES.THEY ARE:-
I. BREAKDOWN MAINTENANCE
II. PREVENTIVE MAINTENANCE
III. SCHEDULED MAINTENANCE
IV. PRODUCTIVE MAINTENANCE

9.  MACHINES ARE ALLOWED TO RUN WITHOUT
CARRYING OUT ANY MAINTENANCE.
 ONLY WHEN IT BECOMES OUT OF ORDER(STOP
WORKING) IT IS REPAIRED
 NEXT MAINTENANCE IS DONE ONLY WHEN IT
BREAKS DOWN.
 APPLICABLE TO MACHINES WHICH ARE NOT
IMPORTANT i.e; BREAK DOWN OF THESE
MACHINES WILL NOT AFFECT THE
PRODUCTION PROCESS

11. I. FAILURE TO REPLACE THE WORNOUT PARTS
II. NON APPLICATION OF LUBRICANTS
III. NEGLECTED COOLING SYSTEM
IV. CARELESSNESS TOWARDS MINOR REPAIRS.

12.  AIMED AT AVOIDING OR PREVENTING
BREAKDOWNS.
 THE PRINCIPLE OF PREVENTIVE MAINTENANCE
IS ‘PREVENTION IS BETTER THAN CURE’
 HERE SOME COMPONENTS ARE IDENTIFIED AS
WEAK SPOTS IN ALL MACHINERIES AND
EQUIPMENTS.
 THESE PARTS ARE INSPECTED REGULARLY.
 MINORS REPAIRS ARE CARRIED OUT
IMMEDIATELY AS SOON AS THERE IS NECESSITY
AVOIDING UNANTICIPATED BREAKDOWNS.

13.  MAINTENANCE DONE ACCORDING TO
RECOMMENDATIONOF THE SUPPLIER OF THE
EQUIPMENT.
 DONE AT PREDETERMINED DATES.
 Eg. OVERHAULING OF MACHINES,CLEANING
OF TANKS,ANNUAL SHUT DOWN AND
MAINTENANCE OF POWER PLANTS etc..
 IN THIS PLANT IS SHUTDOWN NAD
FOLLOWING ARE DONE:
o INSPECTION,REPAIRING AND REPLACING OF
WORN OUT PARTS.

15.  TYPE OF PREVENTIVE MAINTENANCE.
 IT IS DONE ONLY FOR CRITICAL MACHINERIES.
 Eg.
 IN A CHEMICAL PLANT A SMALL PUMP FOR
CIRCULATING CHEMICALS MAY BE A CRITICAL
EQUIPMENT IF THE PUMP FAILS TO FUNCTION
THEN THE WHOLE PLANT HAVE TO BE
STOPPED.SO THE PUMP IS CONSIDERED TO BE
A CRITICAL EQUIPMENT IN THE CHEMICAL
PLANT.THIS PUMP WHICH IS IDENTIFIED AS A
CRITICAL EQUIPMENT SHOULD BE GIVEN
PREVENTIVE MAINTENANCE.

17.  LIFE OF MACHINERY AND EQUIPMENS ARE
INCREASED.
 PRODUCTION TAKES PLACE AS PER THE
SCHEDULE.
 PRODUCTS ARE DELIVERED TO CUSTOMERS IN
TIME AND HENCE HIGH LEVEL OF CUSTOMER
SATISFACTION CAN BE EXPECTED.
 MACHINES ARE IN GOOD CONDITION.HENCE
QUALITY OF THE PRODUCTS WILL BE GOOD.
 NO PRODUCTION LOSS.
 MACHINERY IS NOT DAMAGED.
 NO IDLE TIME OF MEN AND MACHINES.HENCE
THEIR UTILITY INCREASES.

18.  MACHINERY MAY BE DAMAGED.THIS IS A LOSS.
 POORLY MAINTAINED MACHINES WILL
PRODUCE POOR QUALITY PRODUCTS.
 MORE WASTAGE OF MATERIALS.
 BREAK DOWN OF MACHINES MAKES BOTH MEN
AND MACHINE IN IDLE POSTION.SO
PRODUCTION TIME IS WASTED.THIS WILL
INCREASE COST OF PRODUCTION.
 POOR MAINTENACE CAUSE ACCIDENTS.
 DUE TO POOR MAINTENACE LIFE OF MACHINE
IS REDUCED.