Page 179 - TPM A Route to World-Class Performance

Planning and launching the TPM pilot 157

I Av x Perf x Quality = OEE
1 32.7% x 84.2% x 88.6% = 24.4%
PLANNED RUN TIME 450 mins

AVAILABLE TIME 147 inins BREAKDOWNS & CHANGEOVERS
Estimated output 1622 reams

1210 reams 1
RIGHT FIRST TIME REW ORKEDIRECY CLEI
~ OUTPUT SCRAP PAPER

Figure 7.18 Line study OEE calculations

233 interventions/downtime events (1 1 per week)
Of average duration 1.4 hours every 13 hours
59% less than 1 hour duration
2S% less than 30 mins duration

By end of 1999: MTBF = 20 hours MTTR i I hour
Interventions less than S per week
I DOWNTIME @ 11% * 5%

Figure 7.19 Downtime analysis: 1 January - 31 May

A Reduce our inside controllable losses by 2S%
B Reduce trim by 10% of current levels
C Reduce our external (supply) losses by 10%

Will save annual rate of
A 45 tonnes
B 20 tonnes
C 10 tonnes
75 tonnes

Figure 7.20 Scrap analysis