The response is based in the interpretation that the inspector during the visual inspection on site
check that the reinforcement is not greater than 2 mm (this is the maximum thickness of
reinforcement according to ASME B31.1 Table 127.4.2 for this lines 12.7 mm thickness, design
temperature above 400ºC), and the undercut is less or equal to 1mm.
In relation to the interpretation of the limit for acceptance of ripples, grooves, abrupt ridges and
valleys, the code says in 127.4.2. that the condition of the finished weld shall be suitable for the
interpretation of radiographs:
As 100% of butt welds of these lines were radiographed, and are lines are category III, the NoBo,
did the revision of some the RX (or 100%, some of the inspectors did 100% revision of RX films)
and did not require new films for a correct interpretation, for me comply with the code.
In the case fo the weld of this photograph:
Probably one more weld seam is required according with this figure:
and paragrraph 127.4.2., but not with the paragraph 136.4.2 Visual Examination. My opinion is that
this is not a problem for this pipe, is not necessary another weld seam in the cap of this weld when
this was not detected during fabrication process, at this moment this shall be the worse solution (the
best weld is not to weld).