PIG LAUNCHER AND RECIEVER
PIG LAUNCHER AND RECIEVER
(OP)
Dears,
which code and spec to follow PWHT for Pig launcher Materials,
As per ASME B 31.3 for Hydrostatic test pressure what is the equation we have to follow,
I have seen two equation,
Test Pressure = 1.5 design pressure
or
Test pressure = (1.5 x design pressure x allowable stress at test temperature) / Allowable stress at design temperature.
which test pressure we follow as per UG 99
Thanks and Regards
which code and spec to follow PWHT for Pig launcher Materials,
As per ASME B 31.3 for Hydrostatic test pressure what is the equation we have to follow,
I have seen two equation,
Test Pressure = 1.5 design pressure
or
Test pressure = (1.5 x design pressure x allowable stress at test temperature) / Allowable stress at design temperature.
which test pressure we follow as per UG 99
Thanks and Regards





RE: PIG LAUNCHER AND RECIEVER
See B31.4 or B31.8
B31.4 and B31.8 requirements for pig launchers are not the same.
RE: PIG LAUNCHER AND RECIEVER
Remember - More details = better answers
Also: If you get a response it's polite to respond to it.