WALL THICKNESS MEASUREMENT OF CARBON STEEL PIPES BY USING DIGITAL RADIOGRAPHY

摘要

entrOne ofthe major field NDT areas is pipe inspection, which involves testing forcorrosion and erosion as well as examining the quality of welds in pipes. Inorder to perform of the wall thickness measurements that include pitting, wecan use one of the two following techniques: Tangential Technique and DoubleWall Technique. In this study, carbon steel pipes which have 2, 3, and 4 inchdiameter were irradiated from 1m by Gamma-Ray, besides, their histogram wereanalyzed via TangentialTechnique for different periods. Furthermore, the results were compared bygathered results which measured by Ultrasonic Test.