AS/NZS 3992:2015
Pressure equipment - Welding and brazing qualification
Unifies and revises the requirements for the qualification of welding and brazing procedures, welding and brazing personnel, and production test plates and welds, specified in AS 1210 Pressure vessels, AS 1228 Pressure equipment - Boilers, and AS 4041 Pressure piping.
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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 Inspection body
1.4.6 Inspector
1.4.7 Manufacturer
1.4.8 Metallurgical properties
1.4.9 Postweld heat treatment (stress relief)
1.4.10 Prequalified welding procedure
1.4.11 Pressure equipment
1.4.12 Procedure qualification record (PQR)
1.4.13 Qualified welding procedure
1.4.14 Shall
1.4.15 Should
1.4.16 Sound or soundness
1.4.17 Temper bead welding
1.4.18 Test piece
1.4.19 Test specimen
1.4.20 Welder qualification test
1.4.21 Welding procedure specification (WPS)
1.4.22 Welding procedure test
1.4.23 Weld production test
1.5 OTHER PROCESSES
1.6 OTHER MATERIALS
1.7 WELDING AND BRAZING TEST PIECES-SUPERVISION
SECTION 2 PREQUALIFIED WELDING PROCEDURES
2.1 GENERAL
2.2 PREQUALIFIED GASES
2.3 ALUMINOTHERMIC WELDING
2.4 THERMOCOUPLE ATTACHMENT WELDS
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 WELDING PROCEDURE SPECIFICATION FOR NEW PRESSURE EQUIPMENT
3.8 WELDING PROCEDURES FOR REPAIR WELDING
3.9 REPAIRS, REPLACEMENT OR ALTERATION TO IN-SERVICE PRESSURE EQUIPMENT
3.10 WELDING PROCEDURE FOR TUBE AND TUBESHEET WELDING
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 PROCEDURE QUALIFICATION FOR SPECIAL WELDS
8.1 CLAD PLATE WELDING
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 HARD FACING (WEAR RESISTANT) 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
8.4 TEMPER BEAD WELDING
8.4.1 General
8.4.2 Items to be recorded for welding procedure testing
8.4.3 Essential variables
8.4.4 Test pieces
8.4.5 Non-destructive examinations
8.4.6 Test specimens
8.4.7 Mechanical test
8.4.8 Repair welding
8.5 TUBE TO TUBE PLATE WELDING
SECTION 9 WELDER QUALIFICATION
9.1 GENERAL
9.2 METHODS OF QUALIFICATION
9.3 EXTENT OF APPROVAL OF WELDER QUALIFICATION
9.4 INFORMATION FOR 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 EQUIPMENT REQUIREMENTS OF PRODUCTION TEST PLATES
10.3 NUMBER OF PRODUCTION TEST PLATES
10.3.1 For single boiler or pressure vessel
10.3.2 For multiple boilers and pressure vessels
10.4 PREPARATION OF PRODUCTION TEST PLATES
10.5 PRELIMINARY EXAMINATION OF TEST PLATES
10.6 TREATMENT OF TEST PLATES
10.7 TESTING OF TEST PLATES
10.8 ADDITIONAL TESTS BEFORE REJECTION
10.9 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
15.1 PREQUALIFIED WELDING PROCEDURE
15.2 PROCEDURE QUALIFICATION
15.3 PRODUCTION TEST
SECTION 16 THERMOCOUPLE ATTACHMENT JOINTS
16.1 GENERAL
16.2 PREQUALIFICATION PROCEDURES
16.3 TEST JOINT
16.4 PROCEDURE QUALIFICATION TESTS
16.5 QUALIFICATION OF OPERATOR
SECTION 17 WELDING QUALIFICATION OF NON-METALLIC MATERIALS
17.1 SCOPE
17.2 GENERAL REQUIREMENTS
SECTION 18 SPECIAL TREATMENT OF WELDS
18.1 SCOPE
18.2 PROCEDURE
APPENDIX A - LIST OF REFERENCED DOCUMENTS
APPENDIX B - WELDING PROCEDURE SPECIFICATION (WPS)
B1 GENERAL
B2 EXPLANATORY NOTES
APPENDIX C - WELDING PROCEDURE QUALIFICATION RECORD (PQR)
C1 GENERAL
C2 DETAILS OF TESTS
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 procedure
E3 TITANIUM
E3.1 Preparation of surface
E3.2 Etching solution
E3.3 Etching procedure
APPENDIX F - BRAZING PROCEDURE QUALIFICATION RECORD
APPENDIX G - BASIS FOR GROUPING OF MATERIALS
APPENDIX H - EXAMPLES OF THE APPLICATION OF THIS STANDARD TO PRESSURE VESSEL AND PIPING MANUFACTURER
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References
Welding consumables – Wire electrodes and weld deposits for gas shielded metal arc welding of non alloy and fine grain steels – Classifications
Aluminium and aluminium alloys - Drawn tubes
Welding consumables - Wire electrodes, wires, rods and deposits for gas shielded arc welding of creep-resisting steels - Classification
LP gas fuel vessels for automotive use
Structural steel - Hot-rolled plates, floorplates and slabs
Pressure equipment - In-service inspection
Welding consumables - Solid wire electrodes, tubular cored electrodes and electrode/flux combinations for submerged arc welding of non alloy and fine grain steels - Classification
Welding consumables - Fluxes for submerged arc welding and electroslag welding - Classification
Welding consumables - Tubular cored electrodes for gas shielded and non-gas shielded metal arc welding of non-alloy and fine grain steels - Classification
Welding consumables - Tubular cored electrodes for gas shielded metal arc welding of creep-resisting steels - Classification
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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 Inspection body
1.4.6 Inspector
1.4.7 Manufacturer
1.4.8 Metallurgical properties
1.4.9 Postweld heat treatment (stress relief)
1.4.10 Prequalified welding procedure
1.4.11 Pressure equipment
1.4.12 Procedure qualification record (PQR)
1.4.13 Qualified welding procedure
1.4.14 Shall
1.4.15 Should
1.4.16 Sound or soundness
1.4.17 Temper bead welding
1.4.18 Test piece
1.4.19 Test specimen
1.4.20 Welder qualification test
1.4.21 Welding procedure specification (WPS)
1.4.22 Welding procedure test
1.4.23 Weld production test
1.5 OTHER PROCESSES
1.6 OTHER MATERIALS
1.7 WELDING AND BRAZING TEST PIECES-SUPERVISION
SECTION 2 PREQUALIFIED WELDING PROCEDURES
2.1 GENERAL
2.2 PREQUALIFIED GASES
2.3 ALUMINOTHERMIC WELDING
2.4 THERMOCOUPLE ATTACHMENT WELDS
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 WELDING PROCEDURE SPECIFICATION FOR NEW PRESSURE EQUIPMENT
3.8 WELDING PROCEDURES FOR REPAIR WELDING
3.9 REPAIRS, REPLACEMENT OR ALTERATION TO IN-SERVICE PRESSURE EQUIPMENT
3.10 WELDING PROCEDURE FOR TUBE AND TUBESHEET WELDING
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 PROCEDURE QUALIFICATION FOR SPECIAL WELDS
8.1 CLAD PLATE WELDING
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 HARD FACING (WEAR RESISTANT) 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
8.4 TEMPER BEAD WELDING
8.4.1 General
8.4.2 Items to be recorded for welding procedure testing
8.4.3 Essential variables
8.4.4 Test pieces
8.4.5 Non-destructive examinations
8.4.6 Test specimens
8.4.7 Mechanical test
8.4.8 Repair welding
8.5 TUBE TO TUBE PLATE WELDING
SECTION 9 WELDER QUALIFICATION
9.1 GENERAL
9.2 METHODS OF QUALIFICATION
9.3 EXTENT OF APPROVAL OF WELDER QUALIFICATION
9.4 INFORMATION FOR 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 EQUIPMENT REQUIREMENTS OF PRODUCTION TEST PLATES
10.3 NUMBER OF PRODUCTION TEST PLATES
10.3.1 For single boiler or pressure vessel
10.3.2 For multiple boilers and pressure vessels
10.4 PREPARATION OF PRODUCTION TEST PLATES
10.5 PRELIMINARY EXAMINATION OF TEST PLATES
10.6 TREATMENT OF TEST PLATES
10.7 TESTING OF TEST PLATES
10.8 ADDITIONAL TESTS BEFORE REJECTION
10.9 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
15.1 PREQUALIFIED WELDING PROCEDURE
15.2 PROCEDURE QUALIFICATION
15.3 PRODUCTION TEST
SECTION 16 THERMOCOUPLE ATTACHMENT JOINTS
16.1 GENERAL
16.2 PREQUALIFICATION PROCEDURES
16.3 TEST JOINT
16.4 PROCEDURE QUALIFICATION TESTS
16.5 QUALIFICATION OF OPERATOR
SECTION 17 WELDING QUALIFICATION OF NON-METALLIC MATERIALS
17.1 SCOPE
17.2 GENERAL REQUIREMENTS
SECTION 18 SPECIAL TREATMENT OF WELDS
18.1 SCOPE
18.2 PROCEDURE
APPENDIX A - LIST OF REFERENCED DOCUMENTS
APPENDIX B - WELDING PROCEDURE SPECIFICATION (WPS)
B1 GENERAL
B2 EXPLANATORY NOTES
APPENDIX C - WELDING PROCEDURE QUALIFICATION RECORD (PQR)
C1 GENERAL
C2 DETAILS OF TESTS
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 procedure
E3 TITANIUM
E3.1 Preparation of surface
E3.2 Etching solution
E3.3 Etching procedure
APPENDIX F - BRAZING PROCEDURE QUALIFICATION RECORD
APPENDIX G - BASIS FOR GROUPING OF MATERIALS
APPENDIX H - EXAMPLES OF THE APPLICATION OF THIS STANDARD TO PRESSURE VESSEL AND PIPING MANUFACTURER
Previous versions
AS/NZS 3992:2015
Online Library subscription information
Online library subscriptions provide a cost-effective solution for organisations of any size to access the latest standards, offering 24/7 access to a personalised catalogue. The service ensures subscribers have have the most up-to-date version of selected standards, incluing automatic updates for any amendments or versions. Pricing is dependent on the chosen standards and the number of concurrent users, with discounts applied from the standards PDF price. For customised subscriptions or further inquiries, contact the Online Library team.