1. Training Module
OEE 1

2. O.E.E. ? O.E.E.: Overall Equipment Efficiency It is an indicator.
Calculated for one specific equipment.
It compares...
“the quantity of good parts produced”
...versus...
“the quantity of parts theoretically producible” (without any disturbance as breakdown, defects, minor stoppages, etc.)

3. O.E.E. O.E.E. Concepts O.E.E. = Availability x Performance x Quality
Availability rate.
Performance rate.
Quality rate.
O.E.E. = Availability x Performance x Quality
Note: Values in the rest of presentation only as example.

4. O.E.E. Opening time. Consider one “working day”: 1st shift
6:00
7:00
8:00
9:00
10:00
11:00
12:00
13:00
14:00
14:00
15:00
16:00
17:00
18:00
19:00
20:00
21:00
22:00
1st shift
8 hours (480 min.)
8 hours (480 min.)
2nd shift 8’
15’ + =
39’ 8’
15’ + =
39’
But...
So, the total (daily) time is = 960 min.
… this is not the real working time.
There are planned stoppages:
(f.ex., legal breaks: 8’ + 15’ + 8’ + 8’ = 39 min./shift).
The real working time is...
the Opening time = = 882 min.

5. O.E.E. Availability rate. Total (daily) time + Opening time
Consider now the opening time:
Availability rate.
Total (daily) time
Opening time
882 minutes
Planned stoppages +
Legal breaks
Breakdown (50’) +
Changeovers (10’ + 10’) +
Lack of material (20’)
= 90’
But...
Opening time is not the real time used by producing.
There are “not planned” stoppages:
(Breakdowns, changeovers, lack of components, etc.)
The real time used by producing is...
the Loading time = = 792 minutes

6. O.E.E. Availability rate. Total (daily) time + Opening time
Remember:
Availability rate.
Total (daily) time
Opening time
882 minutes
Planned stoppages +
Legal breaks
792 minutes
Loading time
Stoppages
90 minutes
Breakdowns +
Changeovers
Lack of material
Availability rate =
Loading time
Opening time
x 100 =
90 %
Availabil.

7. O.E.E.
Performance rate.
The loading time can be spent not efficiently, due to...
minor stoppages,
tooling in bad condition,
people in training,
people working at low activity,
parts in bad condition being checked before assembling,
etc...
These subperformances mean a loss of efficiency...
reducing the loading time to Net Operating time

8. O.E.E. Performance rate. Total (daily) time + Opening time 90 %
Remember:
Performance rate.
Total (daily) time
Opening time
Planned stoppages +
Legal breaks
792 minutes
Loading time
Stoppages
Breakdowns +
90 %
Availabil.
Changeovers
Lack of mat.
682 min.
Net operating time
Subper-formance
110 minutes
Minor stoppages +
Tooling in bad condition
People in training
Etc...
Performance rate =
Net operating time
Loading time
x 100 =
86 %
Perform.

9. O.E.E.
Quality rate.
Finally, some of the produced parts might be “not valid”
parts with defects,
parts produced in the start up time,
The “Non quality” also reduces the efficiency...
reducing the Net operating time to
Valuable Operating time

10. Valuable Operating time
O.E.E.
Remember:
Quality rate.
Total (daily) time
Opening time
Planned stoppages +
Legal breaks
792 minutes
Loading time
Stoppages
Breakdowns +
90 %
Availabil.
Changeovers
Lack of mat.
682 min.
Net operating time
Subper-formance
Minor stoppages +
86 %
Perform.
Tooling in bad condition
People in training
Valuable Operating time
642 min.
Non-quality
40 minutes
Etc... +
Defects
94 %
Quality
Start up

11. Valuable Operating time
O.E.E.
O.E.E.
O.E.E. calculation.
Total (daily) time
Planned stoppages
Opening time +
Legal breaks
882 minutes
792 minutes
Loading time
Stoppages +
Breakdowns
Changeovers
Lack of mat.
90 %
Availabil.
Valuable Operating time
Opening time
= 73 %
642’
882’ =
O.E.E. =
Etc...
682 min.
Net operating time
Subper-formance
People in training
Minor stoppages
Tooling in bad condition +
86 %
Perform.
Non-quality
Valuable Operating time
642 min. +
Defects
Start up
94 %
Quality
90 % x 86 % x 94 % = 73 %
Availab.
x Perform.
x Quality = O.E.E.

12. O.E.E.
Thanks for your attention!