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Pressure vessels 1

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ALA445

ALA445

Mechanical
Joined
Jul 12, 2019
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16
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AE
Dear Experts, any idea how heating cycles for PWHT in NACE MR0175, required for the qualification of PQR for pressure vessel with P-1, Group 2 material where PWHT is a service requirement (UW-2) is different than the heating cycle mentioned UCS-56 of ASME VIII Div.1. Thanks for your expert advice!
 
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Compare the temperatures and hold times in NACE and ASME VIII-1. Are the temperatures compatible?
Ensure your PQR time and temperature cover the requirements of both.
Build in enough hold time to cover anticipated future repairs requiring PWHT.

"Everyone is entitled to their own opinions, but they are not entitled to their own facts."
 
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