Training Module OEE 1

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.)

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.

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 480 + 480 = 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 = 480 + 480 - 39 - 39 = 882 min.

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 = 882 - 90 = 792 minutes

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.

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

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.

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

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

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.

O.E.E. Thanks for your attention!