Siemens Aktiengesellschaft

Intelligendt Systems & Services Gmbh & Co. Kg

Hans-Jürgen Achtzehn

Robert Staudigel

Rudi Schmid

A device for inspecting submersed plant parts is particularly suited for ultrasonic inspection of screws in the core baffle of a nuclear reactor pressure vessel. The device includes a remote-controlled underwater vehicle that is provided at its end face with a carrier that can be pivoted about a pivot axis oriented parallel to the longitudinal central axis of the underwater vehicle, and is provided with a holding device for an inspection head that is arranged on the carrier spaced apart from the pivot axis.

Device for inspecting plant parts located under water

An ultrasonic probe for ultrasonically testing screws includes an ultrasonic transducer array having a plurality of ultrasonic transducers. The ultrasonic transducers selectively operate as transmitters and receivers. Coupling bodies of solid material are each acoustically coupled to a respective one of the ultrasonic transducers. Each of the coupling bodies have a free coupling surface facing away from the respective ultrasonic transducer. The coupling surfaces are adapted to the shape of the surface of a head of a screw to be tested. The coupling surfaces are centered on the head of the screw. A method for operating an ultrasonic probe includes placing and centering the coupling surfaces on the surface of the head of the screw. Different ultrasonic transducers are operated in at least one of transmission and reception modes in each of a plurality of measuring steps, for locating and characterizing a flaw in the material of the screw.

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Adelsdorf, Germany

Hans-Jürgen Achtzehn