Ultrasonic studies on ITER divertor and first wall prototype modules

Blanket and divertor components of ITER are complicated in design and reliable reactor operation sets special requirements on applied manufacturing methods and on quality and integrity assessment methods. R&D programmes have been implemented to develop a suitable nondestructive testing method as part of ITER primary first wall and divertor component manufacturing programmes. The suitability of several nondestructive testing methods has been evaluated, i.e. ultrasonic inspection, eddy current, X-ray, infrared thermography and leak testing during different manufacturing stages as a quality assurance method and after thermal fatigue tests as an integrity assessment method.