AWS D3.6 : 1993

Personnel
Foreword
List of tables
List of figures
Cross reference list
1 General provisions
1.1 Scope
1.2 Purpose
1.3 Application
1.4 Base metals
1.5 Welding process
1.6 Definitions
1.7 Welding and NDE symbols
1.8 Safety and health
1.9 Standard units of measure
1.10 Referenced standards
2 Classification and design of welded connections
2.1 Classification of welds
2.2 Design
3 Workmanship
3.1 General
3.2 Base metal preparation
3.3 Assembly
3.4 Confirmation weld
3.5 Dimensional tolerances
3.6 Weld profiles
3.7 Tack welds and temporary welds
3.8 Repairs
3.9 Peening
3.10 Arc strikes
3.11 Weld cleaning
4 Technique
4.1 Filler metal
4.2 Measurement of variable conditions
4.3 Weld temperature control
5 Qualification
Part I - General requirements
5.1 Approved procedure
5.2 Previous qualification
5.3 Performance qualification
5.4 Qualification responsibility
Part II - Procedure qualification
5.5 Limitation of variables
5.6 Procedure qualification variables
5.7 Types of tests
5.8 Position of test welds
5.9 Joint configuration
5.10 Test specimens: number and type
5.11 Preparation and testing of specimens
5.12 Test results required
5.13 Supplemental requirements
5.14 Records
Part III - Welder qualification
5.15 General
5.16 Limitations of variables
5.17 Qualification tests required
5.18 Method of testing
5.19 Test results required
5.20 Retests
5.21 Period of effectiveness
5.22 Records
6 Inspection
Part I - General requirements
6.1 General
6.2 Inspection of materials
6.3 Inspection of procedure qualification and
      equipment
6.4 Inspection of performance qualification
6.5 Inspection of work and records
6.6 Obligations of contractor
6.7 Inspection methods
6.8 Personnel qualifications
Part II - Visual examination
6.9 General
6.10 Procedure
Part III - Radiographic examination
6.11 General
6.12 Procedure
Part IV - Ultrasonic examination
6.13 General
6.14 Procedure
Part V - Magnetic particle examination
6.15 General
6.16 Procedure
Part VI - Eddy current examination
6.17 General
6.18 Procedure
7 Class A welds
7.1 Application
Part I - Procedure qualification
7.2 Testing requirements
7.3 Groove welds
7.4 Fillet welds
Part II - Welder qualification
7.5 Testing requirements
7.6 Groove welds
7.7 Fillet welds
Part III - Examination
7.8 Examination requirements
7.9 Visual acceptance criteria
7.10 Radiographic and macroscopic acceptance criteria
7.11 Surface examination acceptance criteria
7.12 Ultrasonic examination acceptance criteria
8 Class B welds
8.1 Application
Part I - Procedure qualification
8.2 Testing requirements
8.3 Groove welds
8.4 Fillet welds
Part II - Welder qualification
8.5 Testing requirements
8.6 Groove welds
8.7 Fillet welds
Part III - Examination
8.8 Examination requirements
8.9 Visual acceptance criteria
8.10 Radiographic and macroscopic acceptance criteria
8.11 Surface examination acceptance criteria
9 Class C welds
9.1 Application
Part I - Procedure qualification
9.2 Testing requirements
9.3 Groove welds
9.4 Fillet welds
Part II - Welder qualification
9.5 Testing requirements
9.6 Groove welds
9.7 Fillet welds
Part III - Examination
9.8 Examination requirements
9.9 Visual acceptance criteria
9.10 Macroscopic acceptance criteria
9.11 Surface examination acceptance criteria
10 Class O welds
10.1 Application
Part I - Procedure qualification
10.2 Testing requirements
10.3 Groove welds
10.4 Fillet welds
Part II - Welder qualification
10.5 Requirements
Part III - Examination
10.6 Examination requirements
10.7 Acceptance criteria
11 Glossary
12 References
Appendix - Sample forms
Index

Gives criteria for welding structures or components under the surface of water. Includes welding in both dry and wet environments. Sections 1 through 6 constitute the general requirements for underwater welding while, sections 7 through 10 contain the special requirements applicable to four individual classes of weld: Class A - Comparable to abovewater weldings; Class B - For less critical applications; Class C - Where load bearing is not a primary consideration; Class O - To meet the requirements of another designated code or specification.