Reliability of Non-Destructive Testing Results of Welded Joints

One model of evaluation of reliability for non-destructive testing results is described in this paper. Performed analysis of results of radiographic and ultrasonic examination was related to two objects. In the first case the evaluation of reliability refers to evaluation of radiographic films performed by three independent NDT laboratories. In the second case completely independent radiographic and ultrasonic examinations were performed on one set of welds with extent of 100% and the other set of welds with extent of 10%. Discussion covers comparison of results for the same method and difference between results of ultrasonic and radiographic examinations of the same set of welds