NONDESTRUCTIVEINSPECTIONOFHULLWELDS
SEPTEMBER2011(Updated February2012-see nextpage)
American Bureau of ShippingIncorporated by Aet of Legislature ofthe State of New York1862
Copyright 2011 American Bureau of ShippingABS Plaza16855 Northchase Drive Houston TX 77060 USA
Updates
February2012consolidationincludes:
● January 2012 version plus Notice No. 1 and Corrigenda/Editorials
September 2011 version plus Corrigenda/Editorials
Foreword
This Guide is the fourth edition of the Guide for Nondestructive Inspection of Hull Welds which wasoriginally published in 1975 and subsequently updated in 1986 and 2002 (the second and third editions).This revision aims to introduce further details of inspection criteria and additional inspetion techniques which are considered as bcing widely recognized by the industry as a reliable means of inspection ofoffshore structures. structure members and their welds during the construction of surface vessels and other related marine and
It is intended that this Guide for test procedures and criteria is to be published as a Guide rather thanRules in order to collect more feedback from industry during its use and be able to reflect this feedbackback into the Guide in a timely manner. Upon pletion of this further calibration period the Guide is to be published as the Rules for Nondestructive Inspection of Huxll Welds.
This Guide bees effective on the first day of the month of publication.
Users are advised to check periodically on the ABS website to verify that this version ofthis Guide is the most current.
GUIDEFOR
NONDESTRUCTIVEINSPECTIONOFHULLWELDS
CONTENTSSECTION 1General..1 Preparation for Inspection. Weld Surface Appearance.1.1 1.3 Visual Inspection of Welds.1.5 Inspection for Delayed (Hydrogen Induced) Cracking3 Methods of Inspection.. 25 Personnel. 5.1 NDT Trainee. 25.3 NDT LevelI. .35.5 5.7 NDT Level l... NDT Level Ill. .37 NDT Procedures and Techniques 49 Acceptance Criteria. 411 13 References of Qualification/Certification Programs Documentation. .415 Nondestructive Testing Terminology 4
SECTION 2 Radiographic Inspection... 5
3 1 Surface Condition .. General .5 .53.1 General.. .53.3 Cause for Rejection. .55 Radiographic Procedure . 5.1 Personnel .5 .55.3 Technique.. .55.5 Film Identification.. ..65.7 5.9 Radiography Quality Level. Image Quality Indicator (IQI).. ..8 .65.11 Radiographic Densit... .115.13 5.15 Radiographic Film Quality.. Radiographic Film Interpretation.. .12 .12Storage of Radiographs. 127.1 Temperature and Humidity Control. General. .127.3 7.5 Documentation and Filing System . 12 12
Report.. .136 11 Digital Imaging Systems. 1311.1 General.. 1311.3 11.5 Procedure and Report. Record... 13 1413 Extent of Radiographic Inspection. 1413.1 General. 1413.3 13.5 Surface Vessels Other Marine and Offshore Structures 14 1415 Location of Radiographic Inspection.. .1515.1 General.. 1515.3 15.5 Other Marine and Olfshore Structures Surface Vessels 15 1517 Acceptance Criteria for Radiographic Inspection 1519 Treatment of Welds with Non-conforming Indications. 17.1 Applicability - .15 1519.1 General. 1519.3 Extent of Indication at One Location.. 1519.5 19.7 Extent of Indication at the End of a Radiograph . Additional Inspection . 15 1621 References. .16
TABLE 1 Material and Inspection Method. 6
TABLE 2 Geometric Unsharpness UTABLE 3 Hole-type IQI Selection. 6′ 7TABLE 4 Wire IQI Selection... .9TABLE 5 ASTM Wire IQI Designation Wire Diameter and Wire Identity.. 10TABLE 6 ISO Wire IQI Designation Wire Diameter and WireIdentity.... .10
SECTION 3 UltrasonicInspection...... 17
1 Ultrasonic Procedure . General .17 .173 3.1 Personnel . 173.3 Technique. 173.5 3.7 Uitrasonic Equipment. Calibration Blocks. 18 183.9 Calibration for Examination . .203.11 3.13 Weld Inspection.. .21Ultrasonic Inspection Reports. 22
Extent of Ultrasonic Inspection . .23
5.1 Checkpoint.. 235.3 5.5 Surface Vessels. Other Marine and Offshore Structures 23 23
