S9074-AQ-GIB-010/248 Rev 1
5-6.2 FILLER MATERIAL. a. A change from a filler material listed under one A-number in table 7-2 to a filler material listed under another A-number, except as permitted by table 7-8. Also, a change to an alloy 625 filler material from any other filler material, including other A-43 filler materials, except as permitted by table 7-8. Filler materials conforming to AWS, ASTM, ASME, etc. classifications, for which there is a qualified procedure (see 5-2.5), may be grouped with the appropriate A-number of table 7-2, and the extent of welder performance cross- qualification by A-numbers shall be as permitted by table 7-8. b. For tube-to-header seal weld joints, a change in electrode coating classification (i.e., MIL-XX15 to MIL-XX16 or MIL-XX18, etc.), and vice versa. c. For tube-to-header seal weld joints, an increase in electrode diameter of 1/32 inch or more than that qualified for any weld pass. d. A change in the form of filler metal from solid to fabricated wire, flux-cored wire, or powdered metal or vice versa.
e. For MIL-120 and MIL-140 series filler materials, see table 7-2, footnote 13. f. For consumable insert joints, a change in the shape of consumable insert.
g. For cladding where composition testing is required, and hardfacing, the addition or deletion of a butter layer. h. For cladding where composition testing is required, and hardfacing, a decrease in the number of layers or weld thickness exceeding the values in table 7-10, except as follows: (1) For welding operators, where cladding qualification is initially performed with composition testing at the minimum thickness/layers intended for initial production per table 7-10, any further reductions in minimum thickness/layers shall not require requalification. (2) For welding operators, hardfacing qualification shall be initially performed at the minimum thickness/layers intended for initial production per table 7-10; any further reductions in minimum thickness/layers shall not require requalification. i. For hardfacing, an increase in thickness exceeding the values in table 7-10. 5-6.3 PROCESS. a. For gas metal arc, a change from one mode to any other mode (e.g., spray, short circuiting, or pulsed spray), except that a pulse arc groove weld in any position qualifies flat groove welds and flat and horizontal fillet welds made with spray arc. b. For gas tungsten arc, a change to or from the pulsed arc mode. c. For plasma arc, a change from transferred arc mode to non-transferred arc mode and vice versa. d. A change from one welding process to any other welding process (as defined in the master chart of welding and allied processes of AWS A3.0M/A3.0). e. A change from automatic welding to mechanized welding. A change from manual to semi-automatic welding and vice versa. A change from manual or semi-automatic welding to automatic, mechanized, or robotic welding and vice versa, except as permitted for semi-automatic welding by 5-3.1.3. f. For robotic, automatic, or mechanized welding, a change from direct visual control to remote visual control and vice versa. g. The deletion of automatic arc voltage control for gas tungsten arc welding. h. The deletion of automatic joint tracking. i. For robotic welding, a change in manufacturer of the robot. j. For robotic welding, the addition, deletion, or change in method of seam tracking (e.g., arc, laser). k. For robotic welding, a change in method of adaptive bead planning or placement. l. A change from automatic welding or mechanized welding to robotic welding and vice versa. m. A change from automatic robotic welding to mechanized robotic welding.
5-8
Made with FlippingBook - Share PDF online