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Title: Neutron streaming through two-legged concrete ducts with baffles
Authors: United States. Assistant Secretary of the Army (R & D).
Donat, Klaus.
Keywords: Baffles
Concrete ducts
Nuclear radiation
Protective structures
Publisher: Weapons Effects Laboratory (U.S.)
Engineer Research and Development Center (U.S.)
Series/Report no.: Miscellaneous paper (U.S. Army Engineer Waterways Experiment Station) ; N-70-3.
Description: Miscellaneous paper
Abstract: Ventilation and access ducts are required for protective structures. The purpose of this study was to determine the effectiveness of baffles in concrete ducts in the attenuation of nuclear radiation. Five baffle configurations were tested in a two-legged concrete duct. The neutron source used was the Fast Burst Reactor at the Nuclear Effects Branch of the White Sands Missile Range. Neutron spectra at the entrance to and within the duct were measured with foil threshold detectors. Comparison of attenuation factors for plain ducts and ducts with one, two, or three baffles indicated that placing any number of baffles in the ducts resulted in disappointingly small improvements. It was concluded that installation of baffles in two-legged ducts does not improve the performance of the ducts sufficiently to make the baffled configuration preferable to a plain duct with a smaller cross section along the entire length of the first leg.
Rights: Approved for public release; distribution is unlimited.
Appears in Collections:Miscellaneous Paper

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