S9074-AQ-GIB-010/248 Rev 1
CHAPTER 6 BRAZING
6-1 SCOPE. This chapter contains the requirements necessary to qualify brazing procedures, brazers, and brazing operators for applications other than piping and pressure vessels. The requirements for piping and pressure vessel applications are contained in NAVSEA 0900-LP-001-7000. The purpose of these qualification requirements is to ensure that qualified procedures are used with adequate equipment by properly trained personnel. 6-2 GENERAL REQUIREMENTS. Each activity performing work within the scope of this document shall direct and supervise the necessary qualification tests (see 6-3.1.1). Upon completion of all qualification tests, each activity shall certify that the tests and test results meet all the requirements of this document and shall maintain records of the qualification tests, as specified in 6-3.4 and 6-4.10. Approval of the required qualification test data shall be obtained from NAVSEA or its authorized representative, as specified in this chapter. Brazing procedures, brazers, and brazing operators qualified to NAVSEA 0900-LP-001-7000 are considered qualified to this document within the process, material (base and filler), thickness, joint design, and position limitations of NAVSEA 0900-LP-001-7000; however, the brazing procedure must also meet the requirements of this document (e.g., identification of specific joint design, nondestructive testing) and be submitted to the authorized representative for review. 6-2.1 FABRICATION REQUIREMENTS. Where specific brazing fabrication requirements (e.g., nondestructive testing, joint designs, records) for a given application are contained within a component or system specification, those specification requirements shall apply in lieu of the corresponding requirements of a.(1) and a.(2) below. Where such added requirements are not specified, the following shall apply: a. The requirements of AWS C3.4M/C3.4, C3.5M/C3.5, or C3.6M/C3.6, as applicable, should be used as guidance. All joints shall be visually inspected as required therein. Class A and B joints shall be UT inspected as required therein except that, where configuration does not permit UT, alternative inspections may be submitted for approval. Acceptance criteria shall be as specified in the respective AWS document. Personnel and procedure qualification, equipment calibration, and inspection records may conform to NAVSEA T9074-AS-GIB-010/271 as an alternative. (1) The classification of joints (A, B, or C) shall be established by the fabricating, design, or contracting activity where knowledge of service, design, or both exists. Otherwise, classification shall be as approved by the authorized representative. Joint classification shall be identified in the submittal of the brazing procedure. (2) The sample plan for UT inspection of class B joints and the inspection expansion in way of rejectable joints shall be proposed by the fabricating activity for approval. (3) The requirements specified herein (e.g., for materials, procedures, personnel, qualification records) shall be met in any case. Brazing procedures and personnel need not be qualified to the cited AWS specifications in addition to the qualification requirements specified herein. 6-3 BRAZING PROCEDURE QUALIFICATION. 6-3.1 RESPONSIBILITY. Before any brazing is performed, each activity shall accomplish the following: a. Prepare a written brazing procedure, including essential elements as specified in 6-3.8.1, and submit the procedure for review per 6-3.3.
6-1
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