DEFSTAN 02-773/1(2000) : 2000

AUTHORIZATION
CONDITIONS OF RELEASE
INTRODUCTION
SECTION 1 - SCOPE
SECTION 2 - RELATED DOCUMENTS
SECTION 3 - ABBREVIATIONS AND DEFINITIONS
  Abbreviations
  Definitions
SECTION 4 - ACCEPTANCE STANDARDS AND PIPE SYSTEM LEVELS
  Applicability
  Alternative Standards of Acceptance
  Structure and Engineering
  Assemblies Including Pipework
  Class 1
  Class 2
  Class 3
  Levels of Importance of Pipe Systems
  Level 1 System
  Level 2 System
  Level 3 System
  Level 4 System
SECTION 5 - DRAWINGS AND CONTRACT REQUIREMENTS
  General
  Visual Examination
  Liquid Penetrant Examination
  Radiographic Examination
  Ultrasonic Examination
  Figure 1 Tee-Butt Joint
  (Relevant Dimensions)
SECTION 6 - ACCEPTANCE STANDARDS FOR VISUAL EXAMINATION OF
            WELDS INCLUDING PIPE WELDS
  Acceptance Standards Classes I and 2
  Cracks
  Porosity
  Surface Condition
  Undercut
  Fillet Welds
  Butt Welds
  Misalignment
  Weld Profile
  Acceptance Standard Class 3
  Fillet Welds
  Misalignment
  Weld Profile
SECT10N 7 - ACCEPTANCE STANDARDS FOR VISUAL EXAMINATION
            OF PIPE WELDS EXCLUDING SLEEVE AND SOCKET WELDS
  Acceptance Standards for System Levels 1, 2 and 3
  Butt Welds
  Misalignment
  Weld Profile
  Table 1 Limits of Root Protrusion
  (Excess Penetration Bead)
  Acceptance Standard System Level 4
  Misalignment
  Weld Profile
  Tube - Tubeplate Welds
SECTI0N 8 - ACCEPTANCE STANDARDS FOR MAGNETIC PARTICLE
            EXAMINATION OF ALL WELDS
  General
  Evaluation
  Cracks
SECTION 9 - ACCEPTANCE STANDARDS FOR LIQUID PENETRANT
            EXAMINATION OF ALL WELDS EXCEPT WELD METAL
            SURFACING AND CLADDING
  General
  Welded Joints
  Cracks
SECTION 10 - ACCEPTANCE STANDARDS FOR LIQUID PENETRANT
             EXAMINAT10N OF WELD METAL SURFACING AND
             CLADDING
  General
  Weld Build-up/Buttering
  Corrosion-Resistant or Wear-Resistant Cladding
  Standards for Rounded Indications
  Table 2 Acceptance Standards for Rounded
  Inclusions In Weld Metal Surfacing and Cladding
SECTION 11 - ACCEPTANCE STANDARDS FOR RADIOGRAPHIC
             EXAMINATION OF WELDS INCLUDING PIPES
  General
  Defect Evaluation
  Tube - Tubeplate Welds
  Class 1 Acceptance Standard for Structure,
  Engineering Assemblies and Pipe Welds in
  Level 1 Systems
  Figure 2 Maximum Allowable Non--Metallic Inclusions
  Class 1 Acceptance Standard
  Figure 3 Combination of Adjacent Defects
  Corrosion-Resistant or Wear-Resistant Cladding
  Standards for Rounded Indications
  Table 2 Acceptance Standards for Rounded
  Inclusions In Weld Metal Surfacing and Cladding
SECTION 11 - ACCEPTANCE STANDARDS FOR RADIOGRAPHIC
             EXAMINATION OF WELDS INCLUDING PIPES
  General
  Defect Evaluation
  Tube - Tubeplate Welds
  Class 1 Acceptance Standard for Structure,
  Engineering Assemblies and Pipe Welds in
  Level 1 Systems
  Figure 2 Maximum Allowable Non--Metallic Inclusions
  Class 1 Acceptance Standard
  Figure 3 Combination of Adjacent Defects
  Class 2 Acceptance Standard-Aluminium Alloy Welds
  Uniform, distributed porosity
  Localised or clustered porosity
SECTION 12 - ACCEPTANCE STANDARDS FOR ULTRASONIC
             EXAMINATION OF ALL WELDS EXCEPT WELD METAL
             SURFACING AND CLADDING
  General
  Butt Joints
  Tee Butt Joints
SECTION 13 - ACCEPTANCE STANDARDS FOR ULTRASONIC
             EXAMINATION OF WELD METAL SURFACING AND
             CLADDING
  Acceptance Criteria for Cladding not Subject to
  Significant Stress
  Acceptance Criteria for Cladding subject to
  Significant Stress
SECTION 14 - ACCEPTANCE STANDARDS FOR EXAMINATION
             OF SLEEVE AND SOCKET WELDS
  Visual Examination
  Dye Penetrant Examination
  Radiographic Examination
  General
  Porosity
  Non-Metallic Inclusions
  Lack of Fusion and Lack of Penetration
  Cracks
  Rectification of Defects
SECTION 15 - ACCEPTANCE STANDARDS FOR EDDY CURRENT EXAMINATION
  General
  Evaluation
SECTION 16 - RECTIFICATION OF DEFECTS
  General
  Parent Material
  Weld Metal
ANNEX A - DEFINITIONS AND ILLUSTRATIONS OF WELD IMPERFECTIONS
ANNEX B - PROCUREMENT CHECK LIST

Contains the Non-Destructive Examination (NDE) requirements and minimum acceptance standards for welds in HM Surface Ships and Submarines at final inspection.