Gr Specimen

WHEN t EXCEEDS 1-1/2, CUT ALONG THIS LINE. EDGE MAY BE OXYGEN-CUT.

MACHINE THE MINIMUM AMOUNT NEEDED TO OBTAIN PLANE PARALLEL FACES (OPTIONAL)

WHEN t EXCEEDS 1-1/2, CUT ALONG THIS LINE. EDGE MAY BE OXYGEN-CUT.

MACHINE THE MINIMUM AMOUNT NEEDED TO OBTAIN PLANE PARALLEL FACES (OPTIONAL)

Notes:

1. A longer specimen length may be necessary when using a wraparound-type bending fixture or when testing bends with greater than 3T bend radius. A longer specimen will be necessary for testing Class B welds with a 6T bend radius.

2. For plates over 1-1/2 in. thick, cut the specimen into approximately equal strips with T between 3/4 in. and 1-1/2 in. and test each strip.

3. t = plate or pipe thickness.

Figure 5.11A—Side-Bend Specimens welder performance tests are intended to establish each welder's ability to make sound welds using a qualified welding procedure specification. In general, for Class O welds, the referenced documents take precedence. However, this document shall take precedence in regard to essential variables and the extent of nondestructive and destructive examination.

5.16 Limitations of Variables

Welders shall be qualified to weld with each procedure used for production. A welder shall requalify to weld with an appropriately qualified procedure when there are changes made in the following essential variables:

(1) Change in welding process

(2) Change in welding method (manual, semiautomatic, automatic)

(3) Omission of backing, but not vice versa

(4) Change in pipe diameter or wall thickness beyond the limits of Tables 5.1, 5.2, or 5.6

(5) Change in electrode classification (for example: AWS EXX10, to AWS EXX11) or proprietary type, including waterproofing

(6) An increase in electrode diameter for wet welding

(7) Change in position from that qualified in accordance with Table 5.5

(8) Change in depth beyond the limits specified in 5.6.2

(9) Change from a mixed breathing gas to air

(10) Change in shielding gas beyond the limits of Tables 5.1 or 5.2

(11) Change in direction of vertical travel from upward to downward or vice versa

(12) Change from stringer bead to weave technique

(13) Where production welding visibility is less than 150 mm (6 in.), unless the welder has already qualified with visibility less than 150 mm (6 in.)

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