AS/NZS 1554.4:1995 STRUCTURAL STEEL WELDING - WELDING OF HIGH STRENGTH QUENCHED AND TEMPERED STEELS
PREFACE
CONTENTS
SECTION 1 SCOPE AND GENERAL
1.1 SCOPE
1.2 INNOVATION
1.3 REFERENCED DOCUMENTS
1.4 DEFINITIONS
1.4.1 Fabricator
1.4.2 Inspecting authority
1.4.3 Inspector
1.4.4 May
1.4.5 Principal
1.4.6 Shall
1.4.7 Should
1.5 WELD CATEGORIES
1.5.1 General
1.5.2 Categories
1.6 BASIC WELDING REQUIREMENTS
1.7 SAFETY PRECAUTIONS
1.7.1 Welding safety
1.7.2 Welding equipment
SECTION 2 MATERIALS OF CONSTRUCTION
2.1 PARENT MATERIAL
2.2 BACKING MATERIAL
2.2.1 Permanent backing material
2.2.2 Temporary backing
2.3 WELDING CONSUMABLES
2.3.1 Electrodes and filler wires
2.3.2 Care of electrodes and filler wires
2.3.3 Flux
2.3.4 Shielding gas
SECTION 3 DETAILS OF WELDED CONNECTIONS
3.1 GENERAL
3.1.1 Permissible weld types
3.1.2 Design stresses
3.1.3 Drawings
3.2 BUTT WELDS
3.2.1 Size of weld
3.2.2 Design throat thickness
3.2.3 Effective length
3.2.4 Effective area
3.2.5 Transition of thickness or width
3.3 FILLET WELDS
3.3.1 Size of weld
3.3.2 Design throat thickness
3.3.3 Effective length
3.3.4 Effective area
3.3.5 Minimum size of fillet welds
3.3.6 Maximum size of fillet welds along edges
3.4 COMPOUND WELDS
3.4.1 Description of compound weld
3.4.2 Design throat thickness
3.5 SEAL WELDS
3.5.1 Requirement
3.5.2 Size of seal weld
3.6 PLUG AND SLOT WELDS
3.6.1 General
3.6.2 Plug welds
3.6.2 Slot welds
3.6.3 Effective areas
SECTION 4 QUALIFICATION OF PROCEDURES AND PERSONNEL
4.1 QUALIFICATION OF WELDING PROCEDURE
4.2 METHOD OF QUALIFICATION OF WELDING PROCEDURE
4.3 PREQUALIFIED WELDING PROCEDURES
4.4 PREQUALIFIED JOINT PREPARATIONS
4.4.1 General
4.4.2 Prequalified complete penetration butt welds
4.4.3 Prequalified incomplete penetration butt welds
4.4.4 Prequalified fillet welds
4.4.5 Additional requirements for welds in hollow section members
4.5 QUALIFICATION OF WELDING CONSUMABLES
4.5.1 Prequalified welding consumables
4.5.2 Qualification of welding consumables by testing
4.6 QUALIFICATION OF WELDING PROCEDURE BY TESTING
4.6.1 Method of qualification
4.6.2 Extent of testing
4.6.3 Preparation of special test piece
4.6.4 Dimensions of test pieces
4.6.5 Macro test
4.6.6 Transverse butt tensile test
4.6.7 Bend test
4.6.8 Charpy impact test
4.6.9 Hardness comparison test - Parent metal and weld metal
4.6.10 Hardness test - heat-affected zone
4.6.11 Retests
4.7 EXTENSION OF QUALIFICATION
4.8 COMBINATION OF PROCESSES
4.8.1 Single process each side of a weld
4.8.2 Combination of processes on the same side of a joint
4.9 RECORDS OF TESTS
4.10 REQUALIFICATION OF WELDING PROCEDURES
4.10.1 Changes in essential variables requiring requalification of welding procedure
4.10.2 Minor changes requiring requalification of welding procedure by macro test
4.11 QUALIFICATION OF WELDING PERSONNEL
4.11.1 Welding supervisor
4.11.2 Welders
SECTION 5 WORKMANSHIP
5.1 PREPARATION OF EDGES FOR WELDING
5.1.1 General
5.1.2 Thermal cutting
5.2 ASSEMBLY
5.2.1 General
5.2.2 Alignment of butt welded joints
5.2.3 Alignment of fillet welds and in complete penetration butt welds
5.2.4 Separation of a backing material
5.3 PREHEATING AND INTERRUN TEMPERATURES AND ARC ENERGY
5.4 WELDING UNDER ADVERSE WEATHER CONDITIONS
5.4.1 Rain, snow, wind, condensation
5.4.2 Low temperature
5.5 TACK WELDS
5.6 WELD DEPTH-TO-WIDTH RATIO
5.7 CONTROL OF DISTORTION AND RESIDUAL STRESS
5.7.1 General
5.7.2 Welding and cutting under stress
5.7.3 Peening
5.7.4 Correction of distortion
5.8 REPAIR OF DEFECTS IN WELDS
5.8.1 General
5.8.2 Grinding
5.8.3 Stop/Starts
5.9 TEMPORARY ATTACHMENTS
5.10 ARC STRIKES
5.11 CLEANING OF FINISHED WELDS
5.12 DRESSING OF BUTT WELDS
SECTION 6 QUALITY OF WELDS
6.1 CATEGORIES OF WELDS
6.2 METHODS OF INSPECTION AND PERMISSIBLE LEVELS OF IMPERFECTIONS
6.2.1 Methods of inspection of completed welds
6.2.2 Permissiblel evels of imperfection
6.2.3 Adjacent imperfections
6.2.4 Qualifications of welding procedure by macro test and side-bend test
6.3 RADIOGRAPHY
6.3.1 Method
6.3.2 IQI sensitivity
6.3.3 Acceptance limits
6.4 ULTRASONIC EXAMINATION
6.4.1 Method
6.4.2 Equipment requirements
6.4.3 Evaluation
6.4.4 Acceptance limits
6.5 MAGNETIC PARTICLE EXAMINATION
6.5.1 Method
6.5.2 Acceptance limits
6.6 LIQUID PENETRANT EXAMINATION
6.6.1 Method
6.6.2 Acceptance limits
6.7 WELD DEFECTS
6.8 REPORTING
SECTION 7 INSPECTION
7.1 GENERAL
7.2 QUALIFICATIONS OF INSPECTORS
7.3 VISUAL INSPECTION OF WORK
7.4 NON-DESTRUCTIVE EXAMINATION OTHER THAN VISUAL EXAMINATION
7.4.1 Extent of non-destructive examination
7.4.2 Personnel and operator requirements
APPENDIX A - LIST OF REFERENCED DOCUMENTS
APPENDIX B - A SUITABLE FORM OF WELDING PROCEDURE SHEET
APPENDIX C - METHOD FOR JOINT AND PROCESS IDENTIFICATION
C1 PREQUALIFIED JOINT IDENTIFICATION
C2 PROCESS IDENTIFICATION
C3 EXAMPLE
APPENDIX D - CHECKLIST OF MATTERS FOR DISCUSSION
APPENDIX E - SUGGESTED EXTENT OF NON-DESTRUCTIVE EXAMINATION
