CoverOVERALL EQUIPMENT EFFECTIVENESS (OEE) JR Malphrus 05/21/07QualityROI_JM_02/15/09

Shift TimePlanned Production TimePlanned Idle TimeActual Running TimeDowntime LossABCMachine running Speed (Theoretical) In PiecesSpeed LossActual Pieces ProducedDEFPieces ProducedGood Pieces ProducedScrap & ReworkOEE = Availability [B/A] x Performance [D/C] x Quality [F/E]TOTAL EQUIPMENT EFFECTIVE PERFORMANCE (TEEP)Calendar TimeScheduled TimeABTEEP = (Scheduled Time / Calendar Time [B/A]) / OEE

OEE ExplainedOEEOverall Equipment Effectiveness (OEE) is comprised of three factors; Availability, Performance, and Quality. To start we need to understand Planned Production Time or the time planned for the plant to be open and running. This could be 5x8, 5x16, 5x24 or in the extreme 7x24 or 3 shifts per day 7 days per week. From the Planned Production Time we subtract Planned shutdown time which includes meetings, breaks, lunch, planned machine maintenance time, etc. Now we can move on to Availability.Availability is the amount of time a machine is available to run minus unplanned downtime. Unplanned downtime is due to unscheduled events such as machine breakdowns, machine operator not available, power outage etc.Availability % = Actual Run Time / Planned Production TimeActual Run time = Planned Operating Time - Unplanned Down TimePlanned Production Time = Production Time Available - Planned ShutdownPerformance is the machine performance or Actual number of pieces produced during the Actual Run Time devided by the Planned Pieces. Planned Pieces is the Actual Run Time devided by the Ideal Cycle Time for 1 piece. In the calculator the Actual Pieces Produced is an input. The Planned Pieces is calculated by deviding the the Actual Run Time by the Ideal Cycle Time (in minutes) for 1 piece.Performance % = Actual Pieces Produced / Planned PiecesPlanned Pieces = Actual Run Time / Ideal Cycle TimeQuality is Good Pieces Produced on the first pass. Good Pieces due to rework are considered Defective Pieces for this calculation.Quality % = Good Pieces Produced / Actual Pieces ProducedGood Pieces Produced = Actual Pieces Produced - Defective Pieces ProducedOEE CalculatorThe calculator requires inputs indicated by Blue shaded cells. Grey-Green cells are calculated so DON'T change these cells.

OEE = Availability % x Performance % x Quality %

Availability % = actual running time / planned cell production time

Performance % = actual pieces produced / Ideal production rate (in pieces)

Quality % = good pieces produced / Actual pieces produced

OEE CalculatorBlue Cells require Inputs, Green Cells are Calculated ResultsThese Calculators may be used for modeling or estimatingShift InformationOffline CalculatorsShift Length in Hours8Total Shift Minutes480Unplanned down time as a percent of Planned Production TimeLunch minutes per Shift30Enter expected percent down time7.4%Breaks per shift2Total Break Minutes30Calculated Unplanned Down Time Minutes (cell D9)30Break Minutes15Other planned Down Time Minutes15Break + Lunch + Other75Rejected Pieces per Shift as a percent of total piecesUnplanned Down Time Minutes30Enter expected percent defective pieces2.29%Calculated Rejected Pieces per Shift (cell D16)641Production Output InformationIdeal Run Rate120Pieces per Minute (PpM)Actual Pieces Produced as a percent of Ideal Run Rate x Operating TimeExpected Pieces = Ideal Run Rate in PpM x Planned Production Time48600Enter expected percent of Ideal Run Rate62.22%Actual Pieces Produced28000Calculated Actual Pieces Produced (cell D15)27999Rejected Pieces per Shift640Calculated Run Rate in Pieces per Minute (PpM75Good Pieces Produced as a percent of Expected PiecesCalculated Variables((Expected Pieces x Performance)-Rejected Pieces))/Expected Pieces60.91%Planned Production Time = Shift minutes - Break + lunch + Other minutes405Actual Run Time = Planned Production Time - Unplanned down time375Model your OEE based on what you think your Availability,Good Pieces Produced = Actual Pieces - Rejected Pieces27360Performance, and Quality percentages are.Availability %92.59%Performance %62.22%OEE Factor CalculationsQuality %97.71%AvailabilityActual Run Time/Planned Production Time92.59%Calculated OEE56.29%Performance(Actual Pieces/Actual Run Time)/Ideal Run Rate62.22%QualityGood Pieces/Actual Pieces97.71%OEEAvailability x Performance x Quality56.30%How Are We Doing?90.00%95.00%99.90%85.41%Blue Bars are results from OEE Factor Calculations Green bars are fixed and show World Class

OEE Calculator

WeWorld Class

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