S9074-AQ-GIB-010/248 Rev 1
6-3.10.1 Base Material. a. A change from a base material classified under one P-number in table 7-13 to a material classified under another P-number in table 7-13, or to any other base material not classified in table 7-13. Requalification is not required when the base material P-numbers have been qualified for brazing in a dissimilar base material joint. (A similar base material joint is one in which both base materials are in the same P-number group.) b. A change in base material thickness to a value outside the range qualified in accordance with table 7-15. 6-3.10.2 Brazing Alloy. A change from a brazing alloy classified under one F-number in table 7-14 to a brazing alloy classified under another F-number, or to a brazing alloy not classified in table 7-14, except that grade IV may be used in repairing by manual torch or induction brazing joints which were brazed with a brazing alloy of a different F-number, without requalification of the procedure. 6-3.10.3 Brazing Process. A change from one brazing process listed in 6-3.1 to another process listed in 6-3.1 or to a brazing process not listed, except as permitted in 6-3.1.b. For processes not listed in 6-3.1, any technical change in a process variable unless otherwise approved. 6-3.10.4 Flux. A change in type of flux except as permitted by table 7-12. 6-3.10.5 Furnace Atmosphere. A change in the furnace atmosphere from one basic type to another basic type. 6-3.10.6 Induction Brazing. a. A change in the source of high-frequency electric current (motor generator, resonance spark gap, vacuum tube oscillator, transformer, and so forth).
b. A change in the frequency of greater than ±50 percent of the range qualified. 6-3.10.7 Joint. A change in joint type (a butt to/from a lap to/from a socket, etc.). 6-3.10.8 Position. A change in brazing position. 6-4 BRAZER AND BRAZING OPERATOR PERFORMANCE QUALIFICATION.
6-4.1 RESPONSIBILITY. When this document is specified by the applicable fabrication document, each activity shall establish that each brazer and brazing operator to be employed for brazing has been qualified by demonstrating his ability to produce sound and satisfactory joints in accordance with this section. 6-4.2 PREREQUISITE. As a prerequisite to performance qualification, each activity shall have procedures qualified in accordance with this section for all applications for which performance qualification is intended. Although it is essential that the brazer be cognizant of the contents of the procedure being used for qualification, this requirement shall not be interpreted to mean that the performance qualification must be accomplished in accordance with the qualified procedure. Performance qualification shall be accomplished as specified in this section. 6-4.3 METHOD OF ESTABLISHING QUALIFICATION. The method of establishing qualification is as follows: a. Each brazer and brazing operator shall know the workmanship and visual inspection requirements of all fabrication documents to which the brazer will be working. To ensure this knowledge, each brazer and brazing operator shall be trained and tested in accordance with a program meeting the requirements of 6- 4.3.1. b. Ensure that each brazer and brazing operator has satisfactorily brazed the applicable performance qualification test assemblies. c. Inspect each qualification test assembly in accordance with the requirements of this section. d. Evaluate the results of either the destructive or nondestructive tests or both in accordance with the applicable standards, unless otherwise specified in this document. e. Maintain current records of the extent of each brazer’s and brazing operator’s qualification (see 6-4.10).
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