Question

[S.R. Shah]

Hi Good Morning. A client requested that our technicians test and certify one of their valves (new valve), however, while reviewing the Report, I noticed the following;
Original Nameplate Data: Valve: AG Crosby, Set Pressure 100-PSI, Capacity 91-SCFM, CDTP --; Note; No repairs or disassembly of the valve was done as it was a test only. The final record of testing showed that the set pressure was at 129 PSI and No Capacity change, Test Fluid was Nitrogen.
Is this acceptable and within the required codes and standards?

 

[DSB123]

ANSWER,
Read the Codes and make your own mind up whether it meets the Code requirements!!

 

[S.R. Shah]

Actually I did Read the Code Requirements. It clearly states the information in which i require, However i wanted to obtain a little feedback / thoughts on the subject from individuals such as you (Mechanical Engineers).

 

[LittleInch]

Whatever you've asked for on the data sheet.

129 vs 100 looks rather high to me - depending on the type of valve the vendor normally guarantees -10% + 5% as a worst case.

I think you might want to look at previous questions or ask this question in the safety relief valve forum.

PS - It's normal protocol on these forums to be a bit more descriptive in your post title and not something like "Question" or "help", but more like "Test vs set pressure of relief valve"

Remember - More details = better answers
Also: If you get a response it's polite to respond to it.

 

[metengr]

You cannot test or certify a PRD without having a VR Certificate from the National Board. 2nd comment - why would you be asked to test and certify another vendors valve with no previous repair or disassembly.

 

[DSB123]

LI,
"PS - It's normal protocol on these forums to be a bit more descriptive in your post title and not something like "Question" or "help", but more like "Test vs set pressure of relief valve"

Just what I was getting at with my response.