• Intro
• Section I
• Section II
• Section III
• Trainer Materials

Intro

As the NCPWB member contractor present during United Association welder/brazer qualification testing, you are satisfying the requirements in ASME Section IX, Para. QW-300.2 and QB-300.2, which states in part that

…welders/brazers or welding operators/brazing operators…shall be tested under the full supervision and control of the manufacturer, contractor, assembler or installer…

The NCPWB Technical Committee has recommended and the NCPWB Board of Trustees has approved the following to be followed by the participating contractor.

Section I: Contractor's & ATR'S Responsibilities during testing

Whenever a welder/brazer is tested, there shall be a NCPWB member contractor present in the facility where the test coupon will be welded/brazed. This person shall be a regular paid employee of a NCPWB contractor. This contractor shall work together with the UA Authorized Testing Representative (ATR) in administering the test.

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Section I: Contractor's & ATR's Responsibilities During Testing

The following tasks shall be performed by the contractor in coordination with the UA Authorized Testing Representative (ATR) prior to and during the welding/brazing of the test coupon/coupons:

Section I: Contractor's & ATR'S Responsibilities during testing

Verify the identity of the welder/brazer using the picture I.D. and other documentation the welder/brazer has provided to the ATR during the joint test session briefing and roll call.

Section I: Contractor's & ATR'S Responsibilities during testing

Verify that the welder/brazer has access to a copy of the applicable Welding/Brazing Procedure Test Specification (WPS) (BPS) that the welder/brazer will follow during welding/brazing of the test coupon.

Section I: Contractor's & ATR'S Responsibilities during testing

Verify that the welder/brazer has access to a copy of the applicable UA Testing Event Inspection Report. This document covers the in-process inspection hold points, locator stamp, tack welds, start and finish times and requires signatures of both the participating contractor and the ATR.

Section I: Contractor's & ATR'S Responsibilities during testing

Verify the test assembly used during the performance qualification matches the base metal specification #, pipe diameter and desired wall thickness found in the:
UA Weld Test Specification, under Pipe Coupon Material.

Section I: Contractor's & ATR'S Responsibilities during testing

Verify that the test coupon is marked with a T-Stamp at 12 o'clock as a position locater, indicating any rotation of the coupon during the testing event. Verify that the coupon remains in the proper fixed position or positions during the entire test with no adjustments to height, angle, or swing.

A location marker or "T" Stamp at 12 O'clock

Section I: Contractor's & ATR'S Responsibilities during testing

Verify that the test coupon is marked with the welder’s/brazer’s test assembly I.D. number. e.g., 63CS4567

• 63 = UA Test
• CS = First & Initials
• 4567 = Last four of UA ID#

Section I: Contractor's & ATR'S Responsibilities during testing

Verify that the electrode or filler metal type to be used for the root and fill passes are correct and are used in proper sequence in accordance with the UA Weld Test Specification.

Section I: Contractor's & ATR'S Responsibilities during testing

Verify with the UA Weld Test Specification that the direction of weld progression is correct. Verify with the UA Weld Test Specification that the coupon is in the correct test position.

e.g., 1-G, 2-G, 5-G, or 6-G

Section I: Contractor's & ATR'S Responsibilities during testing

Verify with the UA Weld Test Specification that the selected amperage is within ranges specified by the WPS. Wire feed speed, voltage, polarity and current can also be verified on this specification document.

Section I: Contractor's & ATR'S Responsibilities during testing

Verify approximate thickness of the weld metal deposited with each process and filler metal type when more than one process or filler metal type is used. Deposited weld metal ranges may be found on the UA Weld Test Specification or Welder Qualification Record.

Section I: Contractor's & ATR'S Responsibilities during testing

Verify proper backing gas and flow rates; torch and weld head gas and their proper mixtures, including flow rate ranges, can also be found on the UA Weld Test Specification sheet.

Section I: Contractor's & ATR'S Responsibilities during testing

The cover pass must be left in the “as welded” condition, cleaning with power or hand wire brush is allowed, (grinding or filing on the completed test coupon inside or outside is not allowed).

Section I: Contractor's & ATR'S Responsibilities during testing

Safety Check: a continuous safety check for required Personal Protective Equipment is critical. The testing area shall have Adequate Ventilation and be protected from the elements.

Section I: Contractor's & ATR'S Responsibilities during testing

“If at anytime during a weld test the ATR or Contractor Representative determines the welder does not demonstrate the necessary welding skills the weld test shall be terminated.”

Section II: Contractor's & ATR's Responsibilities During Testing

After the welder has completed welding any portion of the test coupon and has called for inspection, the Contractor and the UA Authorized Testing Representative (ATR) shall Visually Examine the entire test coupon inside and outside for the following:

Section II: Contractor's & ATR's Responsibilities During Testing

Undercut (not to exceed 1/32”) and Overlap / Cold Lap (none permitted)

Section II: Contractor's & ATR's Responsibilities During Testing

Incomplete Fusion (none permitted)

(A) in the root
(B) in the side wall
(C) on the cover pass

Section II: Contractor's & ATR's Responsibilities During Testing

Root Concavity / Suck Back (non permitted)

Section II: Contractor's & ATR's Responsibilities During Testing

Underfill and Incomplete Joint Penetration (none permitted)

Section II: Contractor's & ATR's Responsibilities During Testing

Cracks (none permitted)

Section II: Contractor's & ATR's Responsibilities During Testing

Porosity (none permitted)

Section II: Contractor's & ATR's Responsibilities During Testing

Slag (none permitted)

Trapped / Included

Section II: Contractor's & ATR's Responsibilities During Testing

Weld Reinforcement "Per UA Weld Test Specifications"

Section II: Contractor's & ATR'S Responsibilities during testing

If at anytime during a weld test the ATR or Contractor Representative determines the welder does not demonstrate the necessary welding skills the weld test shall be terminated.”

Section III: Contractor's & ATR'S Responsibilities during Continuity Updates

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