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Safety Integrity Level (SIL) Classification
5 Classes of demand ( D)
D0: negligible demand rate; the scenario has not been heard of in industry;
D1: the interval between demands is more than 20 years; the scenario is unlikely to occur during the lifetime of the platform, but has been heard of in industry;
D2: the interval between demands is 4 to 20 years; the scenario is likely to occur during the lifetime of the platform or has already occurred before in the platform;
D3: the interval between demands is 6 months to 4 years; the scenario is likely to occur in the time period between two major stops;
D4: the interval between demands is less than 6 months; the scenario occurs several times per year on the platform
Risk Matrix to Determine Personal SIL Level
Correction Factor-Injury:
a)Averting the Danger
b) Exposure Time
c) Mitigation
Risk Matrix to Determine Economic SIL Level
Risk Matrix to Determine Environmental SIL Level:
For industrial safety related topics click on the links below
https://kishorekaruppaswamy.wordpress.com/2012/04/04/chemical-hazard-pictograms/
https://kishorekaruppaswamy.wordpress.com/2012/01/18/ingress-protection/
https://kishorekaruppaswamy.wordpress.com/2017/02/23/safety-integrity-level-sil/
https://kishorekaruppaswamy.wordpress.com/2017/11/20/hydrogen-sulphide-h2s/
https://kishorekaruppaswamy.wordpress.com/2017/12/17/hazardous-area-classification/
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