You are being redirected because this document is part of your ASTM Compass® subscription.
    This document is part of your ASTM Compass® subscription.

    If you are an ASTM Compass Subscriber and this document is part of your subscription, you can access it for free at ASTM Compass
    STP1325

    Detection of Radiation Damage in Low Alloy Steel Using a Squid Sensor

    Published: 01 January 1999


      Format Pages Price  
    PDF (120K) 8 $25   ADD TO CART
    Complete Source PDF (24M) 1120 $164   ADD TO CART

    Cite this document

    X Add email address send
    X
      .RIS For RefWorks, EndNote, ProCite, Reference Manager, Zoteo, and many others.   .DOCX For Microsoft Word


    Abstract

    The magnetic properties of A533B low alloy steel irradiated up to 3 x 1023 n/m2 in a nuclear reactor were measured using a SQUID sensor. The SQUID sensor used in the test is the type with a first-order axial gradiometer. Test specimens were irradiated to 0.5 x 1023 and 3.0 x 1023 n/m2, and then magnetized in a 0.2 T field until saturation before measurement. The specimens were put on a scanning table in a hot laboratory and the SQUID output was recorded while each specimen was gradually moved in a horizontal direction under the SQUID sensor. A superconducting magnet was used to put the test specimen under a magnetic field that changed from +0.01 T to -0.01 T to observe the relation between magnetic field intensity and coercive force (B-H curve). The B-H curve shows a definite tendency towards a higher coercive force for test specimens with higher neutron fluence. The test result also shows a good relation between mechanical properties, such as yield strength, tensile strength, and the Charpy impact test result, with SQUID output. This proves that there is a very good chance of developing a non-destructive evaluation system for nuclear reactor structure. This kind of evaluation system would be a great help in making plant life management even more reliable and reasonable.

    Keywords:

    superconducting quantum interference device, SQUID, low alloy steel, radiation damage, nuclear reactor, magnetic property


    Author Information:

    Otaka, M
    Senior Research Scientist, Mechanical Engineering Research Laboratory, Hitachi Ltd., Ibaraki,

    Shimizu, S
    Engineer, Hitachi Works, Hitachi Ltd., Ibaraki,

    Morinaka, R
    Engineer, Hitachi Works, Hitachi Ltd., Ibaraki,

    Maeda, N
    Director, JAPEIC Research Center, Japan Power Engineering and Inspection Corporation, Yokohama,

    Yamaguchi, A
    Director, JAPEIC Research Center, Japan Power Engineering and Inspection Corporation, Yokohama,


    Committee/Subcommittee: E10.07

    DOI: 10.1520/STP13888S