Question: 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

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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