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.
- ISA Standards and Publications: Expert-Driven Technical Content and Resources
- ISA Standards
- List of ISA Standards Committees
- ISA91, Criticality Ranking for Instrumentation