1.5
QUALITY ASSURANCE
1.5.1
Welding Pressure Piping
Show location, length, and type of welds, and indicate postweld heat
treatment and nondestructive testing as required.
1.5.2
Procedures
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NOTE: Insert the applicable ANSI piping codes.
ANSI B31.2, "Fuel Gas Piping," and ASME B31.8, "Gas
Transmission and Distribution Piping Systems," not
listed under paragraph entitled "References," may be
used.
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Develop and qualify procedures for welding metals included in the work. Do
not start welding until welding procedures, welders, and welding operators
have been qualified. Perform qualification testing by an approved testing
laboratory, or by the Contractor if approved by the Contracting Officer in
accordance with the qualified procedures. Notify the Contracting Officer
at least 24 hours in advance of the time and place of the tests. When
practicable, perform the qualification tests at or near the work site.
Maintain current records of the test results obtained in welding procedure,
welding operator/welder performance qualifications, and nondestructive
examination (NDE) procedures. These records shall be readily available at
the site for examination by the Contracting Officer.Qualify the procedures
for making transition welds between different materials or between plates
or pipes of different wall thicknesses. [ANSI Piping] [_____] requirements
for branch connections may be used in lieu of detailed designs. Unless
otherwise specified, the choice of welding process shall be the
responsibility of the Contractor.
1.5.2.1
Previous Qualifications
Welding procedures, welders, and welding operators previously qualified by
test may be accepted for the work without requalification provided that the
following conditions are fulfilled:
a.
Copies of welding procedures, procedure qualification test
records, and welder and welding operator performance qualification
test records are submitted and approved in accordance with the
paragraph entitled "Submittals."
b.
Testing was performed by an approved testing laboratory or
technical consultant or by the Contractor's approved quality
c.
The welding procedures, welders, and welding operators were
qualified in accordance with ASME BPVC SEC IX or AWS B2.1, AR-2
level; and base materials, filler materials, electrodes,
equipment, and processes conformed to the applicable requirements
of this specification.
d.
The requirements of paragraph entitled "Welder and Welding
Operator Performance Qualification" for renewal of qualification
were met, and records showing name of employer and period of
employment using the process for which qualified are submitted as
SECTION 15216N
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