Monday 9 September 2013

OVERALL EQUIPMENT EFFECTIVENESS (O.E.E.)

The effectiveness of an equipment is the actual output over the reference output, it shows how effectively an equipment is utilized when compared to an ideal equipment.
In other words, it is used to evaluate how well an manufacturing machinery is utilized in an organization. However it is not the absolute measure rather it is used to identify scope for process improvement and how to get the improvement.

O.E.E. divides the overall performance of an manufacturing machinery into three measurable factors, namely :-

  • Availability
  • Performance
  • Quality


AVAILABILITY:-
This metric represents the percentage of scheduled time the machine is available to operate i.e. total planned production time subtracting the unplanned downtime.

AVAILABILITY= RUN TIME / PLANNED PRODUCTION TIME
 PERFORMANCE:-
This metric represents the speed at which the machine works as the percentage of its designed speed i.e. how well a machine is running when it is running.
PERFORMANCE = (PARTS PRODUCED*IDEAL CYCLE TIME)/RUN TIME
QUALITY:-
This metric represents the percentage of good units produced as the percentage of total units produced i.e. good parts produced vs bad parts produced.
QUALITY = NO. OF GOOD PARTS / TOTAL PARTS PRODUCED 
 OVERALL EQIPMENT EFFECTIVENESS



MAJOR LOSSES IN O.E.E.:-


O.E.E. CALCULATION EXAMPLE:-





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