Safety Event 2011 presentatie Nick de With. - Engineers Online
Safety Event 2011 presentatie Nick de With. - Engineers Online
Safety Event 2011 presentatie Nick de With. - Engineers Online
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PFH versus PL versus SIL<br />
Probability of a<br />
dangerous failure<br />
per hour [1/h]<br />
10 -5 < PFH < 10 -4<br />
3x10 -6 < PFH< 10 -5<br />
PL, ISO 13849-1<br />
Performance<br />
Level<br />
a<br />
b<br />
SIL, - IEC 62061<br />
<strong>Safety</strong> Integrity<br />
Level<br />
No special safety<br />
requirements<br />
1<br />
10 -6 < PFH < 3·10 -6<br />
c<br />
1<br />
10 -7 < PFH < 10 -6<br />
d<br />
2<br />
10 -8 < PFH < 10 -7<br />
e<br />
3<br />
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