SYMPOSIA PAPER Published: 01 January 1989

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


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.

Author Information

Snidow, NL
The Babcock & Wilcox Company, Lynchburg, VA
Hassler, LA
The Babcock & Wilcox Company, Lynchburg, VA
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Developed by Committee: E10
Pages: 379–385
DOI: 10.1520/STP10097S
ISBN-EB: 978-0-8031-5069-0
ISBN-13: 978-0-8031-1184-4