Abstract
This work presents an interactive code, WRNS, based on data base interpolation for preliminary neutron shielding design. A wide-range data base of transmission factors is also generated for nine shielding materials having thicknesses up to 200 cm and for neutron energies up to 400 MeV by using adjoint calculations of a one-dimensional discrete ordinates code. In addition, calculation details of the interpolation code are clearly interpreted along with WRNS code applications presented as well.