AS 2452.1-1982

1 - AS 2452.1-1982 NON-DESTRUCTIVE TESTING - DETERMINATION OF THICKNESS - DETERMINATION OF WALL THICKNESS OF PIPE BY THE USE OF R
3 - PREFACE
3 - CONTENTS
4 - 1 SCOPE.
4 - 2 REFERENCED DOCUMENTS.
4 - 3 SAFETY PRECAUTIONS.
4 - 4 DEFINITIONS.
4 - 5 PRINCIPLE.
4 - 6 EQUIPMENT AND ACCESSORIES.
4 - 6.1 Radiation Source.
4 - 6.2 Screens.
4 - 6.3 Identification of Radiographs.
4 - 6.4 Film Type.
4 - 7 PROCEDURE.
4 - 7.1 General.
5 - 7.2 Method No 1.
5 - 7.3 Method No 2.
5 - 7.4 Method No 3.
5 - 7.5 Method No 4.
5 - 7.6 Method No 5.
6 - 7.7 Method No 6.
6 - 8 MEASUREMENTS AND CALCULATION.
6 - 8.1 Measurement.
6 - 8.2 Calculation.
6 - 9 TEST REPORT.
10 - APPENDIX A - TYPICAL EXAMPLES OF FILM TYPES
11 - APPENDIX B - APPROXIMATE CHORD LENGTHS FOR SOME TYPICAL PIPE SIZES

Sets out procedures involving X-ray and gamma-ray for determination of wall thickness of pipe and small pressure vessels. Describes six methods using different exposure geometrics for both lagged and unlagged piping. Details of radiographic films and approximate chord lengths used in the calculations are included as appendices.

This standard sets out methods for the determination of the wall thickness of pipes and small fabricated vessels using X-ray or gamma-ray radiography.NOTES:1. Under a given set of radiographic conditions, the accuracy of the methods specified herein is reduced with decreasing wall thickness and with increasing pipe or vessel diameter.2. The methods specified herein are more accurate when a pipe is empty.