Managing Relief Valve Calibrations
Managing Relief Valve Calibrations
(OP)
I have a question about management programs for Relief Valves around the use of spare valves. For example, we have three identical locations for relief valves in the same service and 5 total valves. Threee relief valves are in service and two spares. When the calibration is due on one of the valves, a work order is executed and the in service valve is removed and the spare is put in its place. The spare has already been repaired and calibrated and is appropriate for that service.
How do you manage this scenairo related to P&ID's? We have several methods, and on one case at a site an audit finding where two valves in the same service had the tags reversed as to what they were on the P&ID (PRV-1 was in the location where PRV-2 should have been per the P&ID). I am looking to improve our process without violating any OSHA rules.
Any ideas? Thanks
How do you manage this scenairo related to P&ID's? We have several methods, and on one case at a site an audit finding where two valves in the same service had the tags reversed as to what they were on the P&ID (PRV-1 was in the location where PRV-2 should have been per the P&ID). I am looking to improve our process without violating any OSHA rules.
Any ideas? Thanks





RE: Managing Relief Valve Calibrations
I can't imagine that an OSHA inspector would have any objection to that management system. You've identified the valves that are designed for that installation, and as long as you ensure that one of those is actually in the identified location, then you've satisfied the PSI (process safety information) requirement.
RE: Managing Relief Valve Calibrations
Thanks for the comments. We are recommending to sites to label each location with the RV number on the P&ID so the tag stas at teh location. Adding the acceptable valves to the P&ID in a note wold be a plus, the only downside is keeping that up to date when a valve is discarded ad another purchased as a replacement.
RE: Managing Relief Valve Calibrations