The methods of detection and the analysis of welded and brazed joint defects emerging during ITER components manufacturing

The nondestructive testing (NDT) methods to test materials and welds in the bearing structures of a superconducting magnet system, vacuum vessel and divertor are described. The experimental results are presented on estimating the efficiency of different NDT methods to identify the type and to assess the size of defects in mock-ups and components manufactured by applying the technologies to be used for the commercial production of the real ITER systems. The results are given on detecting and assessing actual defect-like cracks, sagging and edge displacement in the titanium cylindrical jacket during the commercial manufacture of the experimental conductor samples. The analysis of the results allows the conclusion to be made on a comparative efficiency of different NDT methods for the detection of defects arising during ITER component manufacture. (orig.)