Accession Number : ADA297387

Title :   Conversion in a Two-Region Reactor,

Corporate Author : OAK RIDGE NATIONAL LAB TN

Personal Author(s) : Tobias, M. ; Haubenreich, P. N. ; Aven, R. E.

PDF Url : ADA297387

Report Date : 16 FEB 1953

Pagination or Media Count : 24

Abstract : Calculations were performed by two group methods to determine the critical concentration, neutron balance and conversion ratio in a two-region reactor. The reactor had the following geometry: a four foot diameter spherical core of uranyl sulfate dissolved in heavy water is contained in a shell of stainless steel surrounded by a two foot thick spherical blanket containing thorium and heavy water. Two stainless steel core shells, 1/8 inch thick and 1/4 inch thick were considered. For each core shell, three concentrations of thorium were supposed: 1000 g thorium per liter (as a slurry of thorium oxide), 4218 grams thorium per liter (as pellets of thorium oxide), and 7000 grams of thorium per liter (as spheres of thorium metal). For calculation purposes the thorium distribution was considered homogeneous in all cases. Further, it was assumed that the reactor was free of poisons and that no multiplication occurred in the blanket. Thus, the only materials considered present were uranyl sulfate, heavy water, stainless steel, and thorium (as oxide or metal). A complete tabulation of results is presented.

Descriptors :   *REACTOR THEORY, STAINLESS STEEL, SHELLS(STRUCTURAL FORMS), SPHERES, SLURRIES, BALANCE, REACTOR SYSTEM COMPONENTS, PELLETS, NEUTRONS, THORIUM, CONVERSION RATIO, REACTOR CORES, HEAVY WATER, THORIUM OXIDES, URANYL RADICALS.

Subject Categories : Fission Reactor Physics

Distribution Statement : APPROVED FOR PUBLIC RELEASE