Lack of penetration in existing nozzle welds. Where is this addressed in any of the codes?
Lack of penetration in existing nozzle welds. Where is this addressed in any of the codes?
(OP)
We have a pressure vessel built to ASME Sect. VIII Div. 1. It appears that the bottom nozzle has been altered. The flange was cut off, and an elbow & small pup piece put in. I cannot find any documentation for this repair/alteration. It has Lack of Penetration on most of the welds that were done. I cannot find, in any codes, that address the requirement to fix this issue.





RE: Lack of penetration in existing nozzle welds. Where is this addressed in any of the codes?
RE: Lack of penetration in existing nozzle welds. Where is this addressed in any of the codes?
RE: Lack of penetration in existing nozzle welds. Where is this addressed in any of the codes?
RE: Lack of penetration in existing nozzle welds. Where is this addressed in any of the codes?
RE: Lack of penetration in existing nozzle welds. Where is this addressed in any of the codes?
(b) Indications shown on the radiographs of welds and
characterized as imperfections are unacceptable under the
following conditions and shall be repaired as provided in
UW-38, and the repair radiographed to UW-51 or, at the
option of the Manufacturer, ultrasonically examined in
accordance with the method described in Appendix 12
and the standards specified in this paragraph, provided the
defect has been confirmed by the ultrasonic examination
to the satisfaction of the Authorized Inspector prior to
making the repair. For material thicknesses in excess of 1
in. (25 mm), the concurrence of the user shall be obtained.
This ultrasonic examination shall be noted under remarks
on the Manufacturer’s Data Report Form:
(1) any indication characterized as a crack or zone
of incomplete fusion or penetration;
RE: Lack of penetration in existing nozzle welds. Where is this addressed in any of the codes?
Defects, such as cracks, pinholes, and incomplete fusion,
detected visually or by the hydrostatic or pneumatic test
or by the examinations prescribed in UW-11 shall be
removed by mechanical means or by thermal gouging processes,
after which the joint shall be rewelded [see
UW-40(e)].
RE: Lack of penetration in existing nozzle welds. Where is this addressed in any of the codes?