Method and device for ultrasonic testing a welded seam on the inner surface of a reactor pressure container

摘要

The method involves welding an instrumentation connecting piece (4) guided in an inner side of a pressure vessel to a reactor pressure vessel (2) at its outer circumference. An ultrasonic-testing probe is introduced into the connecting piece. Ultrasonic signal is passed into the connecting piece in the area of a welding seam (8). The transmitted ultrasonic signal within the connecting piece is dispersed in a plane, which is arranged at a distance to the middle axis (12) of the connecting piece. An independent claim is also included for a device for testing a welding seam.