The acceptance criteria as per SEC IX QW-302.4 Visual Examination. For plate coupons all
surfaces (except areas designated "discard") shall be examined
visually per QW-194 before cutting of bend specimens.
Pipe coupons shall be visually examined per
QW-194 over the entire circumference, inside and outside:- "Complete fusion and penetration by visual exam". Defects such as incomplete joint
penetration or incomplete fusion would be reason to fail the visual examination. The weld reinforcement,
undercut and arc strikes are not subject to the acceptance criteria of Section IX. When the test is conducted as per Sec IX no one can ask to meet requirements out side the code.
Refer QW-191.2.3 Acceptance Criteria for Qualification
Test Welds.
regarding under cut,arc strike ,excess weld metal go as given in the client specification.
regards,
Roy
On Mon, Nov 25, 2013 at 11:21 AM, Kumar <sk7920541@gmail.com> wrote:
Dear All,
When conducting WPQT(welder performance qualification test), the
acceptance criteria for both visual & RT is SEC.IX, but the these are
seemed to be much short & liberal. like,
Visual- complete fusion & penetration only required for visual, then
what about undercuts, underfill, re-inforcement height etc ?
RT- only chart given is for porosity comparison (attached herewith).
what about slags and other defects?
If anybody has more details of the above part of SEC.IX, please share.
due to these reasons some times we find difficulty to judge sub-con
welder performances.
could we refert the construction code of the intended project in that case?
Appreciating your valuable feedbacks.
Thanks in advance,
Kumar
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