DEFSTAN 02-773/2(2006) : 2006

Foreword
1 Scope
2 Warning
3 Normative References
4 Abbreviations
5 Definitions
6 Acceptance Standards and Pipe System Levels
   6.1 Applicability
   6.2 Alternative Standards of Acceptance
   6.3 Structure and Engineering Assemblies Including
        Pipework
   6.4 Levels of Importance of Pipe Systems
7 Drawings and Contract Requirements
   7.1 General
   7.2 Visual Inspection
   7.3 Liquid Penetrant Examination
   7.4 Radiographic Examination
   7.5 Ultrasonic Examination
8 Acceptance Standards for Visual Examination of Welds
   Excluding Pipe Welds
   8.1 General
   8.2 Acceptance Standards Class 1, 2 and 3
9 Acceptance Standards for Visual Examination of Pipe Welds
   Excluding Socket and Sleeve Welds
   9.1 Acceptance Standards for Systems Levels 1, 2 and 3
   9.2 Acceptance Standards for System Level 4
10 Acceptance Standards for Magnetic Particle Examination
   of all Welds
   10.1 General
   10.2 Evaluation
11 Acceptance Standards for Liquid Penetrant Examination of
   all Welds except Weld Metal Surfacing and Cladding
   11.1 General
   11.2 Welded Joints
   11.3 Evaluation
12 Acceptance Standards for Liquid Penetrant Examination of
   Weld Metal Surfacing and Cladding (Excluding Hull Valves)
   12.1 General
   12.2 Weld Build-Up/Buttering
   12.3 Standards for Rounded Indications
13 Acceptance Standards for Radiographic Examination of
   Welds Including Pipes
   13.1 General
   13.2 Defect Evaluation
   13.3 Tube-Tubeplate Welds
   13.4 Class 1 Acceptance Standard for Structural and
        Engineering Assemblies and Pipe Welds in Level 1
        Systems
   13.5 Class 2 Acceptance Standard (Excluding Aluminium
        Alloy) for Structural and Engineering Assemblies
        and Pipe Welds in Level 2 and 3 Systems
   13.6 Class 2 Acceptance Standard - Aluminium Alloy Welds
14 Acceptance Standards for Ultrasonic Examination of all
   Welds except Weld Metal Surfacing and Cladding
   14.1 General
   14.2 Butt Welds
   14.3 Tee-Butt Joints
15 Acceptance Standards for Ultrasonic Examination of Weld
   Metal Surfacing and Cladding
   15.1 General
   15.2 Acceptance Criteria for Weld Metal Surfacing and
        Cladding Not Subject to Significant Stress
   15.3 Acceptance Criteria for Weld Metal Surfacing and
        Cladding Subject To Significant Stress
16 Automated Ultrasonic Acceptance Criteria
   16.1 General
   16.2 Butt Joints
   16.3 Submarine Hull Tee-Butt Joints
        16.3.1 Weld root examination (full penetration
               welds only)
        16.3.2 Weld toe examination
   16.4 Defect interaction, butt welds
        16.4.1 Defects with a tip 5 mm or closer to the
               plate surface
        16.4.2 Defects with both tips more than 5 mm from
               the plate surface
   16.5 Defect Interaction, Submarine Hull Tee Butts, Weld
        Toe
   16.6 Defect Interaction, Submarine Hull Tee Butts, Root
   16.7 Transverse Defects, Submarine Butt Welds
   16.8 Porosity
        16.8.1 Clustered Porosity
        16.8.2 Uniformly distributed porosity
        16.8.3 Measurable indications within uniformly
               distributed porosity
   16.9 Linear thread-like indications
17 Acceptance Standard for the Examination of Sleeve and
   Socket Welds
   17.1 Visual Examination
   17.2 Dye Penetrant Examination
   17.3 Radiographic Examination
18 Acceptance Standards for Eddy Current Examination
   18.1 General
   18.2 Evaluation
19 Rectification of Defects
   19.1 General
   19.2 Parent Material
   19.3 Weld Metal
Annex A - Definitions and Illustration of Weld Imperfections
   A.1 Definitions
   A.2 Terminology
   A.3 Transverse Defects
   A.4 Figures

Defines the Non-Destructive Examination (NDE) requirements and minimum acceptance standards for welds on HM submarines and Surface Ships not in Class at Final Inspection. It includes structural joints, welds in pipe systems, weld surfacing and cladding, and fabrication welds in steel castings and forgings.