AS/NZS 3992:1998
Pressure equipment - Welding and brazing qualification
Specifies requirements for the qualification of welding and brazing procedures, welders and brazers, and requirements for production weld testing, other than non-destructive examination, when used in the construction of boilers, pressure vessels, piping and their components. Specific details are given for manual metal-arc welding, flux cored-arc welding, gas metal-arc welding, gas tungsten-arc welding, submerged-arc welding, electroslag, and oxy-acetylene welding. Details are also given for torch brazing, furnace brazing, induction brazing, resistance brazing and dip brazing. The welding and brazing of carbon, carbon-manganese, and low and high alloy steels, as well as copper, aluminium, nickel, titanium and alloys of these materials, are included.
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AS/NZS 3992:1998 PRESSURE EQUIPMENT-WELDING AND BRAZING QUALIFICATION
PREFACE
CONTENTS
SECTION 1 SCOPE AND GENERAL
1.1 SCOPE
1.2 APPLICATION
1.3 REFERENCED DOCUMENTS
1.4 DEFINITIONS
1.4.1 Brazer
1.4.2 Brazing operator
1.4.3 Essential variables for a welder qualification
1.4.4 Essential variables for a welding or brazing procedure
1.4.5 Fabricator
1.4.6 Inspection body
1.4.7 Inspector
1.4.8 Manufacturer
1.4.9 Prequalified welding procedure
1.4.10 Pressure equipment
1.4.11 Postweld heat treatment (stress relief)
1.4.12 Qualified welding procedure
1.4.13 Shall
1.4.14 Should
1.4.15 Test piece
1.4.16 Test specimen
1.4.17 Welder qualification test
1.4.18 Welding procedure
1.4.19 Welding procedure specification
1.4.20 Welding procedure test
1.4.21 Weld production test
1.5 OTHER PROCESSES
1.6 OTHER MATERIALS
SECTION 2 PREQUALIFIED WELDING PROCEDURES
2.1 GENERAL
2.2 PREQUALIFIED GASES
2.3 ALUMINOTHERMIC WELDING
SECTION 3 QUALIFICATION OF WELDING PROCEDURES FOR BUTT, BRANCH AND FILLET WELDS
3.1 GENERAL
3.2 METHODS OF QUALIFICATION OF WELDING PROCEDURE
3.3 RECORDING OF WELDING PROCEDURE DATA
3.4 TESTING OF WELDING PROCEDURE TEST WELDS
3.5 REQUALIFICATION OF A WELDING PROCEDURE
3.6 PORTABILITY OF QUALIFIED WELDING PROCEDURES
3.7 RECIPROCITY OF QUALIFIED WELDING PROCEDURES
3.8 WELDING PROCEDURE SPECIFICATION
3.9 WELDING PROCEDURES FOR REPAIR WELDING
3.10 REPAIRS, REPLACEMENT OR ALTERATION TO IN-SERVICE PRESSURE EQUIPMENT
SECTION 4 ITEMS TO BE RECORDED FOR WELDING PROCEDURE TEST WELDS
4.1 GENERAL
4.2 ITEMS SPECIFIC TO NOMINATED WELDING PROCESSES
4.3 RECORDING OF WELDING PROCEDURE TEST WELDS
SECTION 5 ESSENTIAL VARIABLES FOR WELDING PROCEDURE QUALIFICATION
SECTION 6 WELD TEST PIECES
6.1 TEST PIECES
6.1.1 When required
6.1.2 Form
6.1.3 Dimensions
6.1.4 Preparation
6.1.5 Assessment
6.2 VISUAL EXAMINATION
6.3 NON-DESTRUCTIVE EXAMINATION OF TEST PIECES
6.4 POSTWELD HEAT TREATMENT
6.4.1 Test piece
6.4.2 Heat treatment parameters
6.4.3 Operation
SECTION 7 MECHANICAL TESTING OF WELDS FOR PROCEDURE QUALIFICATION
7.1 GENERAL
7.2 RESPONSIBILITY FOR TESTING
7.3 TEST SPECIMENS
7.3.1 Types of tests and number of test specimens
7.3.2 Removal of test specimens
7.3.3 Identification of specimens
7.4 TRANSVERSE TENSILE TEST
7.4.1 Method
7.4.2 Requirements
7.5 ALL-WELD-METAL TENSILE TEST
7.5.1 Method
7.5.2 Requirements
7.6 BEND TEST
7.6.1 Method
7.6.2 Requirements
7.7 CHARPY V-NOTCH IMPACT TEST
7.7.1 Method
7.7.2 Requirements
7.7.3 Retests
7.8 MACRO EXAMINATION
7.8.1 Method
7.8.2 Requirements
7.9 WELD JOINT HARDNESS TEST
7.10 FILLET BREAK TEST
7.10.1 Method
7.10.2 Requirements
7.11 NICK-BREAK TEST
7.11.1 Method
7.11.2 Requirements
7.12 ADDITIONAL TESTS BEFORE REJECTION
7.12.1 Number of retests
7.12.2 Requirement
7.13 REPORTING OF RESULTS
SECTION 8 WELD OVERLAY QUALIFICATION TESTING
8.1 CLAD PLATE CONSTRUCTION
8.1.1 Items to be recorded for welding procedure testing
8.1.2 Essential variables
8.1.3 Test piece
8.1.4 Non-destructive examination
8.1.5 Test specimen
8.1.6 Chemical analysis
8.2 CORROSION-RESISTANT WELD METAL OVERLAY
8.2.1 Items to be recorded for welding procedure testing
8.2.2 Essential variables
8.2.3 Test piece
8.2.4 Non-destructive examination
8.2.5 Test specimen
8.2.6 Chemical analysis
8.3 HARDFACING WELD METAL OVERLAY
8.3.1 Items to be recorded for welding procedure testing
8.3.2 Essential variables
8.3.3 Test piece
8.3.4 Non-destructive examination
8.3.5 Test specimen
8.3.6 Chemical analysis
SECTION 9 WELDER QUALIFICATION
9.1 GENERAL
9.2 METHODS OF QUALIFICATION
9.3 EXTENT OF APPROVAL OF WELDER QUALIFICATION
9.4 INFORMATION TO BE GIVEN TO WELDER FOR QUALIFICATION TEST WELDS
9.5 EXAMINATION AND TESTING OF WELDER QUALIFICATION TEST WELDS
9.5.1 Methods of examination and testing
9.5.2 Preparation and testing of specimens for destructive testing
9.6 RECORDING OF WELDER QUALIFICATION TESTS
9.7 RETESTS
9.8 RENEWAL OF WELDER QUALIFICATION
SECTION 10 WELD PRODUCTION TESTS
10.1 PRODUCTION TEST PLATES
10.2 ADDITIONAL TESTS BEFORE REJECTION
10.3 RECORDS
SECTION 11 BRAZING QUALIFICATION
11.1 GENERAL
11.2 QUALIFICATION REQUIRED
11.3 GROUPING OF MATERIALS FOR BRAZING QUALIFICATION
11.4 GROUPING OF BRAZING FILLER METALS
11.5 BRAZING FLOW POSITIONS
11.6 RECORDS
SECTION 12 QUALIFICATION OF BRAZING PROCEDURE
12.1 GENERAL
12.2 REQUALIFICATION OF A BRAZING PROCEDURE
12.3 PORTABILITY OF QUALIFIED BRAZING PROCEDURE
12.4 PREQUALIFIED BRAZING PROCEDURE
12.5 ITEMS TO BE RECORDED FOR BRAZING PROCEDURE QUALIFICATION TEST BRAZES
12.6 ESSENTIAL VARIABLES FOR BRAZING PROCEDURE QUALIFICATION
12.7 TEST PIECES FOR BRAZING PROCEDURE QUALIFICATION
12.8 VISUAL EXAMINATION
SECTION 13 EXAMINATION AND TESTING OF BRAZED JOINTS
13.1 REMOVAL OF TEST SPECIMENS
13.2 TRANSVERSE TENSILE TEST
13.2.1 Preparation
13.2.2 Test method
13.2.3 Requirements
13.3 BEND TEST
13.3.1 Preparation
13.3.2 Method
13.3.3 Requirements
13.4 PEEL TEST
13.4.1 Preparation
13.4.2 Method
13.4.3 Requirements
13.5 SECTIONING TEST
13.5.1 Preparation
13.5.2 Method
13.5.3 Requirements
13.6 WORKMANSHIP SPECIMEN TEST
13.6.1 Preparation
13.6.2 Method
13.6.3 Requirements
13.7 RETESTS
SECTION 14 BRAZER AND BRAZING OPERATOR QUALIFICATION
14.1 METHODS OF QUALIFICATION
14.2 ESSENTIAL VARIABLES FOR QUALIFICATION OF BRAZING PERSONNEL
14.3 EXTENT OF APPROVAL OF BRAZING QUALIFICATION
14.4 INFORMATION TO BE GIVEN TO BRAZER OR BRAZING OPERATOR FOR QUALIFICATION TEST JOINT
14.5 QUALIFICATION TEST JOINTS AND TESTING
14.5.1 Test joint
14.5.2 Test specimens
14.5.3 Testing, examination and acceptance requirements
14.6 RECORDING OF BRAZER AND BRAZING OPERATOR QUALIFICATION TESTS
14.7 RETESTS
14.8 RENEWAL OF BRAZER QUALIFICATION
SECTION 15 ALUMINOTHERMIC WELDING OF ELECTRICAL CONDUCTORS
APPENDIX A - LIST OF REFERENCED DOCUMENTS
APPENDIX B - WELDING PROCEDURE SPECIFICATION
B1 GENERAL
B2 EXPLANATORY NOTES
APPENDIX C - RECORD OF QUALIFICATION OF WELDING PROCEDURE
C1 GENERAL
C2 EXPLANATORY NOTES
APPENDIX D - TYPICAL FERROUS MATERIAL SPECIFICATIONS
APPENDIX E - MACRO-ETCHING OF WELDED JOINTS
E1 GENERAL
E2 NICKEL AND NICKEL ALLOYS
E2.1 Preparation of surface
E2.2 Etching solutions
E2.3 Etching
E3 TITANIUM
E3.1 Preparation of surface
E3.2 Etching solution
E3.3 Etching
APPENDIX F - RECORD OF QUALIFIED BRAZING PROCEDURE
APPENDIX G - BASIS FOR GROUPING OF STEELS
APPENDIX H - EXAMPLES OF THE APPLICATION OF THIS STANDARD TO PRESSURE VESSEL AND PIPING FABRICATION
EXAMPLE 1
EXAMPLE 2
EXAMPLE 3
EXAMPLE 4
EXAMPLE 5
EXAMPLE 6
EXAMPLE 7
EXAMPLE 8
Amendments
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Related Information
Approved Code Of Practice For Pressure Equipment (Excluding Boilers) 2001
Ministry: WorkSafe New Zealand
Section: Schedule C
Citation context:AS/NZS 3992 (latest edition) is listed as a referenced Standard
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AS/NZS 3992:1998 PRESSURE EQUIPMENT-WELDING AND BRAZING QUALIFICATION
PREFACE
CONTENTS
SECTION 1 SCOPE AND GENERAL
1.1 SCOPE
1.2 APPLICATION
1.3 REFERENCED DOCUMENTS
1.4 DEFINITIONS
1.4.1 Brazer
1.4.2 Brazing operator
1.4.3 Essential variables for a welder qualification
1.4.4 Essential variables for a welding or brazing procedure
1.4.5 Fabricator
1.4.6 Inspection body
1.4.7 Inspector
1.4.8 Manufacturer
1.4.9 Prequalified welding procedure
1.4.10 Pressure equipment
1.4.11 Postweld heat treatment (stress relief)
1.4.12 Qualified welding procedure
1.4.13 Shall
1.4.14 Should
1.4.15 Test piece
1.4.16 Test specimen
1.4.17 Welder qualification test
1.4.18 Welding procedure
1.4.19 Welding procedure specification
1.4.20 Welding procedure test
1.4.21 Weld production test
1.5 OTHER PROCESSES
1.6 OTHER MATERIALS
SECTION 2 PREQUALIFIED WELDING PROCEDURES
2.1 GENERAL
2.2 PREQUALIFIED GASES
2.3 ALUMINOTHERMIC WELDING
SECTION 3 QUALIFICATION OF WELDING PROCEDURES FOR BUTT, BRANCH AND FILLET WELDS
3.1 GENERAL
3.2 METHODS OF QUALIFICATION OF WELDING PROCEDURE
3.3 RECORDING OF WELDING PROCEDURE DATA
3.4 TESTING OF WELDING PROCEDURE TEST WELDS
3.5 REQUALIFICATION OF A WELDING PROCEDURE
3.6 PORTABILITY OF QUALIFIED WELDING PROCEDURES
3.7 RECIPROCITY OF QUALIFIED WELDING PROCEDURES
3.8 WELDING PROCEDURE SPECIFICATION
3.9 WELDING PROCEDURES FOR REPAIR WELDING
3.10 REPAIRS, REPLACEMENT OR ALTERATION TO IN-SERVICE PRESSURE EQUIPMENT
SECTION 4 ITEMS TO BE RECORDED FOR WELDING PROCEDURE TEST WELDS
4.1 GENERAL
4.2 ITEMS SPECIFIC TO NOMINATED WELDING PROCESSES
4.3 RECORDING OF WELDING PROCEDURE TEST WELDS
SECTION 5 ESSENTIAL VARIABLES FOR WELDING PROCEDURE QUALIFICATION
SECTION 6 WELD TEST PIECES
6.1 TEST PIECES
6.1.1 When required
6.1.2 Form
6.1.3 Dimensions
6.1.4 Preparation
6.1.5 Assessment
6.2 VISUAL EXAMINATION
6.3 NON-DESTRUCTIVE EXAMINATION OF TEST PIECES
6.4 POSTWELD HEAT TREATMENT
6.4.1 Test piece
6.4.2 Heat treatment parameters
6.4.3 Operation
SECTION 7 MECHANICAL TESTING OF WELDS FOR PROCEDURE QUALIFICATION
7.1 GENERAL
7.2 RESPONSIBILITY FOR TESTING
7.3 TEST SPECIMENS
7.3.1 Types of tests and number of test specimens
7.3.2 Removal of test specimens
7.3.3 Identification of specimens
7.4 TRANSVERSE TENSILE TEST
7.4.1 Method
7.4.2 Requirements
7.5 ALL-WELD-METAL TENSILE TEST
7.5.1 Method
7.5.2 Requirements
7.6 BEND TEST
7.6.1 Method
7.6.2 Requirements
7.7 CHARPY V-NOTCH IMPACT TEST
7.7.1 Method
7.7.2 Requirements
7.7.3 Retests
7.8 MACRO EXAMINATION
7.8.1 Method
7.8.2 Requirements
7.9 WELD JOINT HARDNESS TEST
7.10 FILLET BREAK TEST
7.10.1 Method
7.10.2 Requirements
7.11 NICK-BREAK TEST
7.11.1 Method
7.11.2 Requirements
7.12 ADDITIONAL TESTS BEFORE REJECTION
7.12.1 Number of retests
7.12.2 Requirement
7.13 REPORTING OF RESULTS
SECTION 8 WELD OVERLAY QUALIFICATION TESTING
8.1 CLAD PLATE CONSTRUCTION
8.1.1 Items to be recorded for welding procedure testing
8.1.2 Essential variables
8.1.3 Test piece
8.1.4 Non-destructive examination
8.1.5 Test specimen
8.1.6 Chemical analysis
8.2 CORROSION-RESISTANT WELD METAL OVERLAY
8.2.1 Items to be recorded for welding procedure testing
8.2.2 Essential variables
8.2.3 Test piece
8.2.4 Non-destructive examination
8.2.5 Test specimen
8.2.6 Chemical analysis
8.3 HARDFACING WELD METAL OVERLAY
8.3.1 Items to be recorded for welding procedure testing
8.3.2 Essential variables
8.3.3 Test piece
8.3.4 Non-destructive examination
8.3.5 Test specimen
8.3.6 Chemical analysis
SECTION 9 WELDER QUALIFICATION
9.1 GENERAL
9.2 METHODS OF QUALIFICATION
9.3 EXTENT OF APPROVAL OF WELDER QUALIFICATION
9.4 INFORMATION TO BE GIVEN TO WELDER FOR QUALIFICATION TEST WELDS
9.5 EXAMINATION AND TESTING OF WELDER QUALIFICATION TEST WELDS
9.5.1 Methods of examination and testing
9.5.2 Preparation and testing of specimens for destructive testing
9.6 RECORDING OF WELDER QUALIFICATION TESTS
9.7 RETESTS
9.8 RENEWAL OF WELDER QUALIFICATION
SECTION 10 WELD PRODUCTION TESTS
10.1 PRODUCTION TEST PLATES
10.2 ADDITIONAL TESTS BEFORE REJECTION
10.3 RECORDS
SECTION 11 BRAZING QUALIFICATION
11.1 GENERAL
11.2 QUALIFICATION REQUIRED
11.3 GROUPING OF MATERIALS FOR BRAZING QUALIFICATION
11.4 GROUPING OF BRAZING FILLER METALS
11.5 BRAZING FLOW POSITIONS
11.6 RECORDS
SECTION 12 QUALIFICATION OF BRAZING PROCEDURE
12.1 GENERAL
12.2 REQUALIFICATION OF A BRAZING PROCEDURE
12.3 PORTABILITY OF QUALIFIED BRAZING PROCEDURE
12.4 PREQUALIFIED BRAZING PROCEDURE
12.5 ITEMS TO BE RECORDED FOR BRAZING PROCEDURE QUALIFICATION TEST BRAZES
12.6 ESSENTIAL VARIABLES FOR BRAZING PROCEDURE QUALIFICATION
12.7 TEST PIECES FOR BRAZING PROCEDURE QUALIFICATION
12.8 VISUAL EXAMINATION
SECTION 13 EXAMINATION AND TESTING OF BRAZED JOINTS
13.1 REMOVAL OF TEST SPECIMENS
13.2 TRANSVERSE TENSILE TEST
13.2.1 Preparation
13.2.2 Test method
13.2.3 Requirements
13.3 BEND TEST
13.3.1 Preparation
13.3.2 Method
13.3.3 Requirements
13.4 PEEL TEST
13.4.1 Preparation
13.4.2 Method
13.4.3 Requirements
13.5 SECTIONING TEST
13.5.1 Preparation
13.5.2 Method
13.5.3 Requirements
13.6 WORKMANSHIP SPECIMEN TEST
13.6.1 Preparation
13.6.2 Method
13.6.3 Requirements
13.7 RETESTS
SECTION 14 BRAZER AND BRAZING OPERATOR QUALIFICATION
14.1 METHODS OF QUALIFICATION
14.2 ESSENTIAL VARIABLES FOR QUALIFICATION OF BRAZING PERSONNEL
14.3 EXTENT OF APPROVAL OF BRAZING QUALIFICATION
14.4 INFORMATION TO BE GIVEN TO BRAZER OR BRAZING OPERATOR FOR QUALIFICATION TEST JOINT
14.5 QUALIFICATION TEST JOINTS AND TESTING
14.5.1 Test joint
14.5.2 Test specimens
14.5.3 Testing, examination and acceptance requirements
14.6 RECORDING OF BRAZER AND BRAZING OPERATOR QUALIFICATION TESTS
14.7 RETESTS
14.8 RENEWAL OF BRAZER QUALIFICATION
SECTION 15 ALUMINOTHERMIC WELDING OF ELECTRICAL CONDUCTORS
APPENDIX A - LIST OF REFERENCED DOCUMENTS
APPENDIX B - WELDING PROCEDURE SPECIFICATION
B1 GENERAL
B2 EXPLANATORY NOTES
APPENDIX C - RECORD OF QUALIFICATION OF WELDING PROCEDURE
C1 GENERAL
C2 EXPLANATORY NOTES
APPENDIX D - TYPICAL FERROUS MATERIAL SPECIFICATIONS
APPENDIX E - MACRO-ETCHING OF WELDED JOINTS
E1 GENERAL
E2 NICKEL AND NICKEL ALLOYS
E2.1 Preparation of surface
E2.2 Etching solutions
E2.3 Etching
E3 TITANIUM
E3.1 Preparation of surface
E3.2 Etching solution
E3.3 Etching
APPENDIX F - RECORD OF QUALIFIED BRAZING PROCEDURE
APPENDIX G - BASIS FOR GROUPING OF STEELS
APPENDIX H - EXAMPLES OF THE APPLICATION OF THIS STANDARD TO PRESSURE VESSEL AND PIPING FABRICATION
EXAMPLE 1
EXAMPLE 2
EXAMPLE 3
EXAMPLE 4
EXAMPLE 5
EXAMPLE 6
EXAMPLE 7
EXAMPLE 8
Amendments
AS/NZS 3992:1998
Online Library subscription pricing
The cost of your subscription will depend on which standards you want to access, and how many people in your organisation need to be able to access the Online Library subscription at the same time (concurrent users). During your subscription period, we are also able to make any necessary changes and ensure you are aware of any pricing changes that result. For a quote, contact our Online Library team by emailing onlinelibrary@standards.govt.nz.