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Nuclear Computations for HRE-3 Design : Equilibrium Results (open access)

Nuclear Computations for HRE-3 Design : Equilibrium Results

Various nuclear characteristics of two-region spherical homogeneous reactors have been computed in order to provide information for the design of HRE-3. Equilibrium isotope concentrations were established using an ORACLE code, and a two-group model was used to obtain critical concentrations and flux distributions. Breeding ratio is plotted as a function of reactor size, blanket thorium concentration, and other design and operating parameters, and the time required for a demonstration breeding is discussed. Tables of results, including neutron balances, are given for selected reactors. a number or relations are presented for estimating the effects of fission products, copper, corrosion products, H2O, and the core tank on breeding ratio.
Date: July 10, 1957
Creator: Rosenthal, M. W. & Fowler, T. B.
System: The UNT Digital Library
Radiation Level in the Stator Region of the HRT Fuel Circulation Pump (open access)

Radiation Level in the Stator Region of the HRT Fuel Circulation Pump

The gamma dose rate in the motor region of the HRT fuel circulation pump was measured with the pump scroll full of radioactive solution. Extrapolation of the data to the solution activity expected in the pump under normal operation gives a dose rate well below that which would result in excessive gas production in the stator can within the life of the pump. The above dose rate does not include the effects of fast neutrons from the fuel solution or of the general cell radiation level in the vicinity of the pump. It appears that the possibility of gas production in the stator from the cell background radiation is sufficiently great to warrant the installation of a shield around the outside of the motor end of the fuel circulating pump.
Date: July 3, 1957
Creator: Engel, J. R.
System: The UNT Digital Library