PetroStreet

What is the criteria to identify, report, and investigate any activation of safety instrumented system?
Should all the cases be reported, and investigated?
Please share the appropriate references.

The reference is this case for the reporting part is API 754.
Coming towards the identification, that comes directly through Operations and the investigation mainly depends on the criteria established at the site level.
Majorly related to the potential and actual severity, process safety incident investigation management system should be in place to handle that part.
Yes, all the cases which are related to either prevent or mitigate LOPC are required to be reported, and based upon the incident management system be investigated.

Exactly, the investigation part and the criteria should be outside API 754 and if needed should be called from Company's Incident Management System.
Some of my colleagues have confirmed that all SIS with prevention or mitigation of LOPC are required to be investigated within a month time, as per their site procedures.
I understand none of Tier-3 incidents should be left out from investigation.
Would look forward to some more inputs here.