I posted this question in the piping forum but unfortunately received conflicting responses. Given that API-579-1 Fitness for Service applies to pressure vessels, I am posting this question in the pressure vessel forum as well.
I am preparing an API 579-1 (Fitness for Service) Part 3...
I am preparing an API 579-1 (Fitness for Service) Part 3 (Assessment of Existing Equipment for Brittle Fracture) Level 2 analysis of an existing carbon steel piping system to determine if the piping system can operate safely during an auto refrigeration condition.
The procedure does not address...
The 2019 BPVC VIII Div 1 changed the classification of as-forged A105 flanges from Curve B UCS-66 to Curve A UCS-66 to address brittle fracture possibility.
ASME B16.5 still rates an A105 flange to -20F.
Why has B16.5 not followed BPVC UCS-66?
