Code Reference:
UW-51(b)(3)- Radiographic Examination of Welded Joints.
Background:
UW-51(b): Indications shown on the radiographs of welds and characterized as imperfections are unacceptable under the following conditions………….
(3): any group of aligned indications that have an aggregate...
QW-408.8 of ASME IX states that the omssion of an inert backing gas calls for requalification if used in the WPQ. If the welder was tested on a pipe with an inert gas backing, is he qualified for butt welding plate single sided, complete penetration, without any backing?
ASME Section IX
Code Reference:
Article III - Welding Performance Qualification
Background:
The Welding Variables for Welders, QW-350, lists the Essential Variables for each Process. Paragraph QW-405.3 in these process tables states that a change in the progression of Vertical welding...