Shield shape determination for radioisotope sealed source in S and U shape tube

As some kinds of domestic radioisotopes have been produced, it is necessary to develop the transportation package for domestic and foreign utilization in the medical and industrial areas. RI transportation packages need the minimum weight in order to transport and operate it easily. The transportation package for RI sealed source generally has the guide tube to load and unload the RI source conveniently. Shielding part or RI source passing through S or U shape guide tube must be considered as the arbitrary 3-dimensional shape to except the internal space of the guide tube in shielding thickness calculation. Therefore, this paper describes that Fortran program for the shielding shape determination has been developed to calculate 3-D coordinates of shielding surface and evaluate the weight of shielding part