STP1550: Dosimetry Analyses of the Ringhals 3 and 4 Reactor Pressure Vessels

    Kulesza, Joel A.
    Westinghouse Electric Company, Cranberry Township, PA

    Fero, Arnold H.
    Westinghouse Electric Company, Cranberry Township, PA

    Roudén, Jenny
    Vattenfall/Ringhals AB, Väröbacka,

    Green, Eva-Lena
    Vattenfall/Ringhals AB, Väröbacka,

    Pages: 14    Published: Aug 2012


    Abstract

    A comprehensive series of neutron dosimetry measurements consisting of surveillance capsules, reactor pressure vessel cladding samples, and ex-vessel neutron dosimetry has been analyzed and compared to the results of three-dimensional, cycle-specific neutron transport calculations for the Ringhals Unit 3 and Unit 4 reactors in Sweden. The comparisons show excellent agreement between calculations and measurements. The measurements also demonstrate that it is possible to perform retrospective dosimetry measurements using the 93Nb (n,n′) 93mNb reaction on samples of 18-8 austenitic stainless steel with only trace amounts of elemental niobium.

    Keywords:

    reactor pressure vessel fast neutron fluence, neutron dosimetry, ex-vessel neutron dosimetry, retrospective dosimetry


    Paper ID: STP155020120006

    Committee/Subcommittee: E10.07

    DOI: 10.1520/STP155020120006


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