1. Overall Equipment Effectiveness (OEE)
Total Available time= 24 / 7 (168 hours per week)
World Class
(90%)
(95%)
(99%)
(1) Shift pattern choices
Actual Running Time
Down- time Losses
Availability
Actual Running Time Total Time Available
(2) Change-overs
(3) Breakdowns
(4) Planned Maintenance
Actual Output in Running Time
Speed Losses
Rate
Actual Output Possible Output in Actual Running Time
(5) Speed Losses compared to BDP
(6) Minor stoppages (< 30 seconds)
Good Quality Output
Quality Losses
Quality
Good Output All (Actual) Output
(7) Quality defects - scrap
(8) Start-up / Change-over losses
Availability x Rate x Quality = OEE
World Class Manufacturing OEE = > 85%

2. How to calculate… x = OEE = 35% x 90% x 97% = 31% x Availability 35%
65%
Rate
90%
10% x 3%
31%
69% =
OEE
OEE = 35% x 90% x 97% = 31%
97% x
Actual Output = 45,481 x Scrap / waste / NC = 1,364 x Good output (beyond QC) = 44,117 x
Quality = 44,117 / 45,481 (*100%) = 97%
Quality
Total Time Available = 1,440 minutes
Downtime Losses - 2 Shifts i.o 3 Shifts = minutes - 4 Changeovers = minutes - 56 Stoppages = minutes - Planned Maintenance = minutes Total = minutes Actual Running Time = minutes Availability = 504 / 1,440 (*100%) = 35%
Actual Running Time = 504 minutes BDP Output per minute = 100 x Actual Output per minute = 96 x Possible Output = 50,400 x Actual Output = 45,481 x
Rate = 45,481 / 50,400 (*100%) = 90%