A LOPA has indicated that a demand would occur every 10 years on average for a particular
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A LOPA has indicated that a demand would occur every 10 years on average for a particular process hazard. Although most automatic diagnostics execute every minute, the worst-case time period for automatic diagnostics within the equipment is once per day. A proof test interval of 5 years is proposed for a manual test and inspection.
Would this SIF be classified as high-demand or low-demand?
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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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