If,

A: Actual working time of one shift =

B: Scheduled down time of one shift =

C: Loading time of one shift = A-B =

D: Stoppage loss time of one shift =

E: Operating time of one shift = C-D=

G: Number of units processed in one shift =

H: Quality products rate =

I: Standard cycle time =

J: Actual cycle time =

then,

F: Actual processing time = J×G =

T= Availability = (E/C)×100 =

M= Speed operating rate = (I/J) ×100 =

N= Net operating rate = (F/E)×100 =

L= Performance rate = M×N×100 =

Overall equipment efficiency = T×L×H×100 =

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