Re: [MW:18512] PWHT of SA 612N used in cryogenic service

SA 612 falls under P number# 10C, for the mentioned thickness PWHT is not required (refer Table UCS 56)

On 25 August 2013 19:58, <dstevenson@cvatanks.com> wrote:

We are currently manufacturing tanks for CO2 transport service using Sec VIII Div. 1 ASME and I am being told the tanks do not require PWHT? The tanks are shell 7/8 inch Heads are 7/16 the process is subarc.

Can anyone point me to a section or code that would explain why we would PWHT or where we would not have to PWHT these units?

Thank you for aquick reply

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