Does any one here know of an authoritative source (ASME, ISA, NFPA, OSHA, etc..) that gives a definition for the following in one of their standards or codes and the number for that standard or code:
- LO (Valve Locked Open)
- LC (valve Locked Closed)
- CSO (Valve Car Sealed Open)
- CSC (Valve Car Sealed Closed)
I'm not looking for an explanation, I'm looking for a citable code.