Page 149 - TPM A Route to World-Class Performance

128 TPM-A Route to World-Class Performance

Quality
(RFT = right first time)

components (RFT)
quality =
completed cycles
components (RFT) = 152
completed cycles = 203

Therefore
152
quality = __ = 74.9%
203
OEE = 86.0% x 77.7% x 74.9% = 50%
A summary of the OEE values for the equipment history provided (Table 6.2)
is given in Table 6.3. A simple graph of the OEE possibilities is shown in
Figure 6.14.
Cos Vben e fi t a na lysis
The cost/benefit analysis is based on the additional units that can be produced
per week for each 1 per cent improvement in OEE.

Table 6.3 Miller M201 OEE summary

Date Availability Performance Quality OEE
15 M 86.8 71.0 loo* 61.6
T 81.0 75.3 100 61.0
W 89.5 45.7 89.5 36.6
Th 83.4 82.6 100 68.9
F 84.5 68.3 92.6 53.4
16 M 90.1 55.2 21.9 10.9
T 94.4 79.6 100 75.1
W 94.4 79.6 100 75.1
Th 86.9 45.9 100 39.9
F 94.5* 70.1 100 66.2
17 M 93.5 78.6 100 73.5
T 86.0 77.7 74.9 50.0
W 93.6 75.3 100 70.5
Th 66.0 56.6 100 37.4
F 93.1 83.6* 67.8 52.8
Average 87.6% 69.9% 90.3% 55.3%
*Best of best 94.5% 83.6% 100% 79.0%
Difference between best of best and average: 24%

A real improvement potential of