According to the SIS safety life cycle in IEC 61511, when should a process hazards analysis be
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According to the SIS safety life cycle in IEC 61511, when should a process hazards analysis be conducted?
A. After the project scope is defined and the piping and instrumentation drawings (P&ID) are complete B. Immediately before specifying the overall safety requirements C. Immediately before verifying that the SIF will achieve the required risk reduction D. Both A and B are correct
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D Process hazards analysis is s...View the full answer
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Related Book For 
Safety Instrumented System Design Techniques And Design Verification
ISBN: 9781945541438
1st Edition
Authors: Iwan Van Beurden, William Goble
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