a.
Conduct tests not only of the welding procedure used by his
organization to determine the suitability of the procedure to
insure welds that will meet the required tests, but also of the
welding operators to determine the ability of the operators to
make sound welds under standard conditions.
b.
Be thoroughly familiar with ASME B31.1 and with AWS B2.1.
c.
Be capable of performing all welding operations required for
construction and installation of the heating system.
3.3.2
Rules of procedure for qualification of all welders and general
requirements for fusion welding shall conform with the applicable portions
of ASME B31.1, or with AWS B2.1, and also as outlined below.
3.3.2.1
Examining Welders
Each welder shall be examined at the jobsite by the Contractor in the
presence of a representative of the Contracting Officer to determine the
ability of the welder to meet the qualifications required. Welders for
piping shall be tested and qualified for all applicable positions. Each
welder shall be required to identify his weld with his specific code
marking signifying his name and number assigned.
3.3.2.2
Examination Results
The Contracting Officer shall be provided with a listing of names and
corresponding code markings. Where a welder fails to meet the prescribed
welding qualifications, that welder shall be retested, and if he fails the
second test, he shall be disqualified for work on the project.
3.3.3
Beveling, Alignment, and Erection
Fabrication of welded pipe joints shall be in accordance with ASME B31.1.
3.3.4
Weld Inspection
Welds shall be inspected for defects in accordance with the following:
a.
Cracks shall not be acceptable regardless of length or location;
b.
Undercut shall not be deeper than 5 percent of the base-metal
thickness or 0.79 mm 1/32 inch, whichever is less;
c.
Overlap shall not be permitted. The Contracting Officer reserves
the right to further examine the welds by other means to establish
the soundness of any weld. Weld defects shall be removed and
repairs made to the weld, or the weld joints shall be entirely
removed and repairs made to the weld at no additional cost to the
Government. Repairing defective welds by adding weld material
over the defect or by peening will not be permitted. Welders
responsible for defective welds may be required to requalify under
paragraph entitled "Qualifications of Welders."
SECTION 15184N
Page 19
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