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    Results of a Neutron Flux Perturbation Experiment with Babcock & Wilcox Owners Group Surveillance Capsules


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    The Babcock & Wilcox Owners Group (B&WOG) Flux Perturbation Experiment in the Oak Ridge National Laboratory Poolside Facility simulated the thermal shield, downcomer, pressure vessel, and cavity region of a B&W-designed 177-fuel assembly reactor by an arrangement of steel slabs and a void box. Two simulated surveillance capsules located in the downcomer were irradiated as part of the NRC-sponsored Light Water Reactor Pressure Vessel Surveillance Dosimetry Improvement Program. The capsules contained extensive dosimetry provided by B&W and the Hanford Engineering Development Laboratory (HEDL). Dosimeters were also located outside of the capsules in the downcomer region. Flux distributions were calculated throughout the test configuration using the two-dimensional DOT 4.3 transport theory code. The calculated and measured data are compared in this paper.


    neutron dosimetry, reactor vessel surveillance capsules, ORNL Poolside Facility

    Author Information:

    Snidow, NL
    The Babcock & Wilcox Company, Lynchburg, VA

    Hassler, LA
    The Babcock & Wilcox Company, Lynchburg, VA

    Committee/Subcommittee: E10.07

    DOI: 10.1520/STP10097S