DEFSTAN 02-743(PT5)/1(2000) : 2000

TITLE PAGE
SCOPE
FOREWORD
Sponsorship
Conditions of Release
General
MOD Tender or Contract Process
Related Documents
Health and Safety
Warning
CONTENTS
SECTION 1 - GENERAL REQUIREMENTS
            1.1 Drawings
            1.2 Production
SECTION 2 - DESIGN REQUIREMENTS
            2.1 General
            2.2 Joint Design
                2.2.1 General
                2.2.2 Clearances
                2.2.3 Ultrasonic Examinations
                2.2.4 Surface Finish
            2.3 Heat Treatment
            2.4 Brazing Alloys and Fluxes
SECTION 3 - QUALIFICATION REQUIREMENTS
            3.1 General
            3.2 Qualification of Brazing Alloys, Fluxes and
                 Combinations thereof
            3.3 Brazing Procedure Information
            3.4 Changes in Brazing Procedures
            3.5 Automatic Brazing Equipment
            3.6 Personnel
            3.7 Qualification Approval
            3.8 Requalification
            3.9 Responsibilities of the Organization
            3.10 Qualification Test Pieces
                 3.10.1 Qualification of Procedures
                 3.10.2 Qualification of Personnel
                 3.10.3 Retests
                 3.10.4 Qualification of Automatic Brazing
                        Equipment
            3.11 Requirements for Qualification Tests
            3.12 Examination of Completed Test Pieces
SECTION 4 - BRAZING REQUIREMENTS
            4.1 General
            4.2 Brazing Processes
            4.3 Fittings
            4.4 Brazing Alloys and Fluxes
            4.5 Preparation of Fittings
            4.6 Preparation of Pipes
                 4.6.1 Cutting
                 4.6.2 Sizing
                 4.6.3 Clearances
            4.7 Cleaning
            4.8 Fluxing
            4.9 Assembly
            4.10 Brazing of Valves
            4.11 Nitrogen Purge
            4.12 Tacking
            4.13 Heating
            4.14 Priming
            4.15 Face Feeding
            4.16 Cooling
            4.17 Marking of Joints
            4.18 Heat Treatment after Brazing
            4.19 Cleaning after Brazing
            4.20 Examination of Brazed Joints
            4.21 Repair of Joints
                 4.21.1 General
                 4.21.2 Repair Techniques
                 4.21.3 Examination
                 4.21.4 Recording of Repairs
                 4.21.5 Heat Treatment of Repairs
            4.22 Reuse of Fittings
            4.23 Reuse of Pipe
SECTION 5 - INSPECTION AND TEST REQUIREMENTS
            5.1 General
            5.2 Pre-Braze Inspections
                5.2.1 Joint Components
            5.3 Ultrasonic Examination of Fittings before
                Brazing
                5.3.1 General
                5.3.2 Setting Up
                5.3.3 Search Sensitivity
                5.3.4 Examination
                5.3.5 Assessment
                5.3.6 Report
                5.3.7 Gas
                5.3.8 Brazing Procedure
            5.4 Inspections during Brazing for Joints using
                Insert Rings
            5.5 Inspection of Completed Joints
                5.5.1 Visual Examination of Brazed Joints
            5.6 Ultrasonic Examination of Brazed Joints
                5.6.1 General
                5.6.2 Method, Search Sensitivity and Calibration
                5.6.3 Examination of Joints with External Hexagonal
                      Configuration
                5.6.4 Radiographic Examination of Brazed Joints
            5.7 Inspection of Used Fittings Salvaged for Reuse
                5.7.1 Inspections before Reuse
                5.7.2 Inspections after Brazing
            5.8 Inspection of Used Pipe Salvaged for Reuse
                5.8.1 Inspections before Reuse
            5.9 Inspection of Qualification Test Pieces
                5.9.1 General
                5.9.2 Pre braze Inspections
                5.9.3 Inspections During Brazing for Joints
                      with Insert Rings
                5.9.4 Visual Examination of Completed Test
                      Pieces
                5.9.5 Bond Assessment
            5.10 Ultrasonic Examination
                 5.10.1 General
                 5.10.2 Peel Tests
            5.11 Additional Tests required only for Qualification
                 of Procedures
            5.12 Hydraulic Testing
SECTION 6 - ACCEPTANCE STANDARDS FOR BRAZED PIPE
            JOINTS
            6.1 Faying Surfaces of Pipes
            6.2 Faces of Joints using Insert Rings-Before Face
                Feeding
            6.3 Faces of Joints after Face Feeding
            6.4 Joint Geometry
            6.5 Ultrasonic Examination of Brazed Joints
                6.5.1 General Fittings
                6.5.2 Special Fittings
            6.6 Fittings Salvaged for Reuse
                6.6.1 Visual Examination
                6.6.2 Dye Penetrant Examination
            6.7 Pipe Salvaged for Reuse
            6.8 Qualification Test Pieces
                6.8.1 Faces of Joints using Insert Rings,
                      before Face Feeding
                6.8.2 Ultrasonic Examination
                6.8.3 Peel Tests
                6.8.4 Tensile Tests
ANNEX A - RELATED DOCUMENTS
ANNEX B - ABBREVIATIONS AND DEFINITIONS
ANNEX C - MATERIALS FOR WHICH DATA IS INCLUDED IN THE ANNEXES
ANNEX D - FLUXES AND BRAZING ALLOYS
ANNEX E - HEAT TREATMENT
ANNEX F - CLEARANCES FOR CAPILLARY BRAZED JOINTS
ANNEX G - CONSUMABLES AND CLEARANCES FOR ALUMINIUM NICKEL
          SILICON BRASS (Al-Ni-Si BRASS) PIPING USED WITH
          ALUMINIUM SILICON BRONZE (Al-Si BRONZE) FITTINGS
SECTION H - HEALTH PROTECTION AND SAFETY PRECAUTIONS
ALPHABETICAL INDEX

Gives the requirements for design and production of capillary brazed joints for piping systems in Surface Ships and Submarines.