• ISA91, Criticality Ranking for Instrumentation


    The ISA91 committee, Criticality Ranking for Instrumentation, was merged in late 2007 as a working group into ISA84, Electrical/Electronic/Programmable Electronic System (E/E/PES) for Use in Process Safety Applications.For information about the former committee or about ISA84, please contact Charley Robinson, ISA Standards.

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