ASBA has issued information bulletin to bring awareness and provide guidance to designers, owners and fabricators regarding the use of ASME B31.3-2014 Process Piping which was published 27 February 2015.
pl. refer to the link
On Tuesday, September 1, 2015 at 1:03:14 PM UTC+4, MW wrote:
-- pl. refer to the link
On Tuesday, September 1, 2015 at 1:03:14 PM UTC+4, MW wrote:
PWHT is exempted for all thicknesses and weld types of P-No 1 base material, subjected to meeting the requirements of Notes in Table 331.1.3 (such as preheat and multiple layer welds...).On 1 September 2015 at 12:24, S.Mohammed <mohd52100@gmail.com> wrote: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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