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Hybrid applications of IEC61511 – Laurie Blackmore
12
7
17
129
197
SIL1 (in SIS)
SIL2 (in SIS)
SIL3 (in SIS)
Functions in BPCS (asset or
non-SIL safety)
Other API (not needed)
Example of API and IEC61511 for an offshore installation
8
Total API trips = 362