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    STP1011

    Characteristics of the IAEA Correlation Monitor Material for Surveillance Programs

    Published: 0


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    Abstract

    Within the International Atomic Energy Commission (IAEA) coordinated program on the optimizing of reactor pressure vessel surveillance programs and their analysis, Phase 3, a specially tailored "radiation sensitive" correlation monitor material has been fabricated. This material will serve as a reference to the IAEA program for future vessel surveillance programs throughout the world.

    An extensive evaluation of the correlation monitor material in the as-received condition has been carried out in Finland and the results are presented here. The mechanical properties measured at different temperatures include Charpy V-notch and instrumented precracked Charpy data, and elastic-plastic fracture toughness (J and T). The specimen size and geometry have been varied in the tests. Correlation between different fracture properties are evaluated and discussed.

    Keywords:

    pressure vessel steel, fracture toughness, radiation embrittlement, surveillance program


    Author Information:

    Wallin, K
    Senior research officer, Technical Research Centre of Finland (VTT), Metals Laboratory, Espoo,

    Valo, MJ
    Senior research officer, Reactor Laboratory, VTT,

    Rintamaa, R
    Head of Structural Engineering Section, Metals Laboratory, VTT,

    Torronen, K
    Director of Metals Laboratory, VTT,

    Ahlstrand, R
    Head of Materials Engineering Office, Imatran Power Co., Helsinki,


    Committee/Subcommittee: E10.03

    DOI: 10.1520/STP10389S