Volume 3, Issue 3 (March 2006)

    Validation of the Neutron Fluence Calculation on the VVER-440 RPV Support Structure

    (Received 20 June 2005; accepted 29 September 2005)

    Published Online: 2005

    CODEN: JAIOAD

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    Abstract

    Measurements with activation detectors were carried out on Unit 4 of Kozloduy NPP in order to validate the fluence calculation data for the RPV support structure. Irradiation of iron, copper, and niobium detectors was performed during the 17th fuel cycle. The neutron fluence on the support structure and the activities of irradiated detectors were calculated by the three-dimensional transport code TORT with BGL440 multigroup cross section library. The history of local power distribution in the reactor core was taken into account. The measured and calculated induced activities are in good agreement in the area of the support structure. The calculated fluence evaluation in this area is conservative.


    Author Information:

    Belousov, SI
    Senior Researcher, Institute for Nuclear Research and Nuclear Energy, Bulgarian Academy of Sciences, Sofia,

    Ilieva, KD
    Senior Researcher, Institute for Nuclear Research and Nuclear Energy, Bulgarian Academy of Sciences, Sofia,

    Kirilova, DL
    Senior Researcher, Institute for Nuclear Research and Nuclear Energy, Bulgarian Academy of Sciences, Sofia,

    Petrov, BY
    Senior Researcher, Institute for Nuclear Research and Nuclear Energy, Bulgarian Academy of Sciences, Sofia,

    Polke, E
    Senior Researcher, Framatome ANP GmbH, Erlangen,


    Stock #: JAI13494

    ISSN: 1546-962X

    DOI: 10.1520/JAI13494

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    Author
    Title Validation of the Neutron Fluence Calculation on the VVER-440 RPV Support Structure
    Symposium Reactor Dosimetry, 12th Volume, 2005-05-13
    Committee E10