On-Line Ultrasonic Inside-Diameter Control System for Zircaloy Tube Etching

    Published: Jan 1984

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    An ultrasonic inside-diameter (ID) control system was used during the final etching process for producing Zircaloy nuclear fuel cladding tubes. This results in establishing automatic inside-diameter control during etching with an automatic etching system.

    In this system, the inside-diameter at the center point in the length of each tube is continuously measured with the ultrasonic inside-diameter measuring equipment during the etching process and the etching is automatically stopped by a signal from the control equipment when the inside-diameter reaches the target value.

    This made the final etching process economical and suitable for large-scale production, having an equal or better level at the inside-diameter of tubes etched with this system than those made by a process controlled by an air-micrometer.


    Zircaloy, nuclear fuel cladding tube, inside diameter, etching process, ultrasonic control

    Author Information:

    Tanaka, Y
    Kobe Steel Ltd., Tokyo Head Office, Tokyo,

    Komatsu, M
    Kobe Steel, Ltd., Chofu-kita Plant, Shimonoseki,

    Fujii, N
    Kobe Steel, Ltd., Chofu-kita Plant, Shimonoseki,

    Kubota, H
    Kobe Steel, Ltd., Chofu-kita Plant, Shimonoseki,

    Committee/Subcommittee: B10.02

    DOI: 10.1520/STP34467S

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