Steam service PSVs testing on Air Test Stand
Steam service PSVs testing on Air Test Stand
(OP)
Dears
ASME SECTION VIII D1 2009, UG-136(d)(4) states " Necessary corrections for differentials in popping pressure between steam and air shall be established by the Manufacturer and applied to the popping point on air."
Is it mandatory to make the CDTP corrections while testing the Steam service pzvs in Air Test stand?
Your comment/advice pls.
ASME SECTION VIII D1 2009, UG-136(d)(4) states " Necessary corrections for differentials in popping pressure between steam and air shall be established by the Manufacturer and applied to the popping point on air."
Is it mandatory to make the CDTP corrections while testing the Steam service pzvs in Air Test stand?
Your comment/advice pls.





RE: Steam service PSVs testing on Air Test Stand
Per ISO, only the term Safety Valve is used regardless of application or design.
RE: Steam service PSVs testing on Air Test Stand
But if the PSV is not originally designed for your steam service and now you want to use it on steam, you need to get the new CDTP value from valve manufacturer with providing them your set pressure and temperature at least.