Tracing of a Pressure Relief Valve Tag with Missing Name Plate
Tracing of a Pressure Relief Valve Tag with Missing Name Plate
(OP)
Dear All,
Can you please advise on below queries:
1 - How to positively identify a PRV if the original name plate is missing and the PRV is not traceable for servicing/overhauling".
2 - Some PSV datasheets and P&IDs may not be available and tags are unidentifiable. What is the way forward in this situation.
Regards and Thanks in advance
SAhmad
Can you please advise on below queries:
1 - How to positively identify a PRV if the original name plate is missing and the PRV is not traceable for servicing/overhauling".
2 - Some PSV datasheets and P&IDs may not be available and tags are unidentifiable. What is the way forward in this situation.
Regards and Thanks in advance
SAhmad





RE: Tracing of a Pressure Relief Valve Tag with Missing Name Plate
Per ISO, only the term Safety Valve is used regardless of application or design.
RE: Tracing of a Pressure Relief Valve Tag with Missing Name Plate
Where is this plant(City and Country)?
What kind of Plant is it?
When was it built?
Is it still owned and operated by the original Owner/Operator?
Sometimes its possible to do all the right things and still get bad results
RE: Tracing of a Pressure Relief Valve Tag with Missing Name Plate
The plant is located in Middle east and is an upstream oil and gas plant. Built in 80's and still operated by original owner. Certain cases have been reported where valve tags were missing and sometimes valve tag is available but data sheet and P&ID is missing. what guidelines should be followed for such cases which is required to incorporate in corporate procedures.
Thanks
RE: Tracing of a Pressure Relief Valve Tag with Missing Name Plate
RE: Tracing of a Pressure Relief Valve Tag with Missing Name Plate
1. Take the PSV out of service and send it to a valve repair shop so they can maintain it and see what it is internally.
2. Make sure that you understand the correct size and just replace the thing.
At my plant we would probably just go with option #2. So we wouldn't have to have down time to inspect and service the original valve. Of course to execute option #2 you would need to have the PSV sized already. Which may take some amount of effort by an engineer.