NONDESTRUCTIVE INSPECTION OF HULL WELDS 2002
CONTENTS
SECTION 1 General.................................................................................. 1
1 Preparation for Inspection ..................................................... 1
3 Methods of Inspection ........................................................... 1
5 Personnel .............................................................................. 1
5.1 Other Recognized National Certifying Programs...............1
5.3 NDT Trainee......................................................................1
5.5 NDT Level 1 ......................................................................2
5.7 NDT Level 2 ......................................................................2
5.9 NDT Level 3 ......................................................................2
7 NDT Procedures and Techniques......................................... 3
9 Inspection for Delayed (Hydrogen Induced) Cracking .......... 3
9.1 Time of Inspection .............................................................3
9.3 Delayed Cracking Occurrences.........................................3
11 Acceptance Standards .......................................................... 3
13 Documentation ...................................................................... 4
15 References ............................................................................ 4
SECTION 2 Radiographic Inspection...................................................... 5
1 General.................................................................................. 5
3 Surface Condition.................................................................. 5
3.1 General..............................................................................5
3.3 Cause for Rejection...........................................................5
5 Radiographic Procedure ....................................................... 5
5.1 Personnel ..........................................................................5
5.3 Technique..........................................................................5
7 Film Identification .................................................................. 6
7.1 General..............................................................................6
7.3 Multiple Films ....................................................................6
9 Radiography Quality Level .................................................... 6
9.1 General..............................................................................6
9.3 Radiographic Contrast.......................................................6
9.5 Radiographic Definition .....................................................6
9.7 Geometric Unsharpness....................................................7
9.9 Source-to-Film Distance....................................................7vi ABS GUIDE FOR NONDESTRUCTIVE INSPECTION OF HULL WELDS .
2002
9.11 Minimum Quality Level ..................................................... 7
11 Image Quality Indicator (IQI) ................................................. 7
11.1 General............................................................................. 7
11.3 Hole-type IQI..................................................................... 7
11.5 Plaque Design (Penetrameter) ......................................... 8
11.7 Wire Design IQI ................................................................ 8
11.9 IQI Selection ..................................................................... 8
11.11 Location of IQI .................................................................. 8
13 Radiographic Density ............................................................ 9
13.1 General............................................................................. 9
13.3 Calibration of Densitometer .............................................. 9
13.5 Step-Wedge Film Density ................................................. 9
13.7 Radiographic Film Density Requirements......................... 9
15 Radiographic Film Quality ................................................... 10
15.1 General........................................................................... 10
15.3 Artifacts and Blemishes .................................................. 10
17 Radiographic Film Interpretation ......................................... 10
17.1 General........................................................................... 10
17.3 Film Viewing Facilities .................................................... 10
19 Storage of Radiographs ...................................................... 10
19.1 General........................................................................... 10
19.3 Temperature and Humidity Control................................. 11
19.5 Documentation and Filing System .................................. 11
21 Extent of Radiographic Inspection ...................................... 11
21.1 General........................................................................... 11
21.3 High Proportion of Non-conforming Indications .............. 11
21.5 Surface Vessels.............................................................. 11
21.7 Reduction of Inspection Frequency ................................ 11
21.9 Other Marine Structures ................................................. 11
23 Location of Radiographic Inspection................................... 11
23.1 General........................................................................... 11
23.3 Surface Vessels.............................................................. 12
23.5 Other Marine Structures ................................................. 12
25 Applicable Criteria ............................................................... 12
25.1 Surface Vessels – Class A Criteria................................. 12
25.3 Surface Vessels – Class B Criteria................................. 12
25.5 Other Marine Structures ................................................. 12
25.7 Applicability..................................................................... 12
27 Acceptance Criteria............................................................. 13
27.1 Cracks ............................................................................ 13
27.3 Incomplete Fusion or Incomplete Penetration ................ 13
27.5 Slag ................................................................................ 13
27.7 Porosity........................................................................... 13
27.9 Multiple Indications ......................................................... 14
27.11 Undercut ......................................................................... 14
29 Treatment of Welds with Non-conforming Indications ........ 15
29.1 General........................................................................... 15