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Review and Recommendations on PWHT Exemptions for 2014 Edition of ASME B31.3

Product Number: 51320-14543-SG

Author: Deepak Mankar

Publication Date: 2020

$20.00

A major significant change in fabrication/ welding of process piping was brought out by ASME B31.3 2014 addition Table 331.1.3 “Exemptions to Mandatory Postweld Heat Treatment” It now allowed for all carbon steel conforming to P- No1material group for all control Thickness and All weld type with exemption from Postweld heat treatment if a preheat of 95°C (200°F) is applied prior to welding on any nominal material thickness >25mm (1in). Similar exemptions are provided for P-No.3, P-No 4 group 1, and P-No. Group1. These exemptions required a closer scrutiny prior to adaptation. The review is an attempt to make end users aware of its significance.

Products tagged with 'brazing'

Review and Recommendations on PWHT Exemptions for 2014 Edition of ASME B31.3

Association for Materials Protection and Performance