Siemens Power Corporation, Inc.

Other

Howard D Cross

Richard G McClelland

Leo E Hansen

An apparatus for measuring fuel assembly bow and twist comprising a fixturing apparatus, a reference device and an ultrasonic measuring device.

Nuclear fuel assembly bow and twist measurement apparatus

A method and apparatus for eliminating erroneous test readings during ultrasonic testing of nuclear fuel rods is disclosed. The method and apparatus employ the use of an alignment guide to effect temporary alignment of the fuel rods during testing in order to overcome mechanical deviations of the rods. The alignment guide includes elongated, parallel guide bars for insertion into an array prior to ultrasonic testing. The bars are mounted on a base which, in turn, is movably mounted on a support element. A fixed guide maintains the relative position of the guide bars with respect to one another. A hydraulic element causes the guide bars to be inserted and removed from the fuel array. In a preferred arrangement, the alignment guide may be removably mounted on a frame containing the ultrasonic testing equipment.

Method and apparatus for ultrasonic testing of nuclear fuel rods

A hand-held color signal includes a curved reflector and first and second members of different colors. A hand-controlled control member causes a selected one of the colored members to be positioned for reflection by the reflector, thereby providing a signal of the color of the reflected member.

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Kennewick, WA, United States of America

Howard D Cross