I confirm for ASME B31.3-2014 all tickness of Group P1 the PWHT is not required. The only prescription is the PREHEAT at 95 °C for thickness >25 mm.
-- This is my interpretation, correct me if i'm wrong!
Il giorno martedì 1 settembre 2015 10:42:11 UTC+2, Mohd Siraj ha scritto:
Il giorno martedì 1 settembre 2015 10:42:11 UTC+2, Mohd Siraj ha scritto:
Dear all,As old ASME B31.3-2012 we know it was above 19mm req pwht,now i read ASME B31.3-2014,little confused me with pwht exemption and pwht requirements and control thickenss 331.1.3?q1- what is thik req for pwht for P1 as per b31.3 2014 ?q2 : for P1,mentioned more than 25mm thk and 95C preheat exemption from pwht so less than 25mm not require pwht ?regards,mohd.
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