S9074-AQ-GIB-010/248 Rev 1
c. A change from one FS tool design to another FS tool design (e.g., threaded conical probe to a cylindrical probe without threads, or convex shoulder with features to a smooth concave shoulder). A-3.7.6 Welding Parameters. A-3.7.6.1 Plunge Depth. For the position-control method only, a change in the plunge depth position outside the limits from that recorded in the qualification test report. A-3.7.6.2 Force (Load). For the force-controlled method only, a change outside the limits from that recorded in the qualification test report. A-3.7.6.3 Lateral FS Tool Offset for FSW. An increase in FS tool offset from that recorded in the procedure qualification test report (see A-3.4.1.3.1). A change in lateral FS tool offset to the opposite side of the joint from that recorded in the procedure qualification test report. A-3.7.6.4 Thermal Management. A change in the thermal management method from that recorded in the procedure qualification test report. A-3.8 CHANGES REQUIRING LEVEL II REQUALIFICATION PROCEDURE. For FSW, FSP, and repair of friction stirred material, one qualification test assembly as specified in A-3.2.3.3 shall be welded for each set of desired changes to the essential elements listed below from that recorded in a procedure previously qualified under level I. A-3.8.1 Seam Tracking. A change from automatic to manual seam tracking or vice versa. A-3.8.2 Travel Speed. A change greater than ±10 percent in the travel speed recorded in the procedure qualification test report. A-3.8.3 FS Tool Rotational Direction. For direction-specific designed FS tools, any change in FS tool rotational direction from that recorded in the procedure qualification test report. For non-monolithic FS tools, any change in rotational relationship between the FS tool parts from that recorded in the procedure qualification test report. A-3.8.4 FS Tool Rotational Speed. A change greater than ±10 percent in the FS tool rotational speed recorded in the procedure qualification test report. A-3.8.5 Tilt Angle. A change greater than ±0.5 degrees in tilt angle from that recorded in the procedure qualification test report. A-3.8.6 Side Tilt Angle. A change greater than ±0.2 degrees in side tilt angle from that recorded in the procedure qualification test report. A-3.8.7 Shielding Gas. a. A change from a mixture of gases to another mixture of gases, or to a single gas or vice versa. b. A change from using a shielding gas to no use of shielding gas. A-3.8.8 Base Material Thickness. For FSW, for thicknesses between the minimum and maximum nominal thickness qualified (see A-3.7.1.d), a change in nominal base material thickness from that recorded in the qualification test report(s). For repair of friction stirred material, base material thickness limits shall be as specified in table A-4 and A-3.4.3.4. A-3.8.9 Joint Gap. A change in joint gap to a gap outside the limits from that recorded in the qualification test report. A-3.8.10 Number of Passes and Direction of Passes. A change in the number of passes from that recorded in the procedure qualification test report. In multipass welds or programmed paths, a change in the direction of travel from that recorded in the procedure qualification test report from one pass in relation to the preceding pass. A-3.8.11 Discard Length. Discard length less than that recorded in the qualification test report.
A-10
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