RADSOURCE: A COMPUTER PROGRAM FOR PREDICTING SCALING FACTORS

摘要

RADSOURCE is a microcomputer program that analyzes reactor coolant gamma isotopic data to predict waste stream-specific 10CFR61 nuclide scaling factors. The code calculates a set of scaling factors for the fuel source nuclides: Sr-90; Pu-241; Tc-99; Cm-242; I-129; and TRU nuclides (see page 2). The code also has pre-calculated scaling factors for C-14 and Ni-63. These scaling factors were developed from industry radiochemistry data. Tritium is not addressed in the code since it will be in the form of tritiated water and does not lend itself to scaling with gamma nuclides. RADSOURCE requires some basic power plant information so the scaling factors developed will be tailored to the plant itself. With these data, the code assesses the reactor core conditions that control the release of the fission products and Transuranics. The code produces estimates of the ratios of the 10CFR61 fission products, listed above and the TRU to Cs-137 ratios released to the reactor. These ratios, become the scaling factors for reactor coolant purification resins. In a separate set of calculations, the code attempts to account for transport and removal into different, specific waste streams, and develops scaling factors based on the levels of radionuclides calculated in the purification resins. A key assumption in this code is that the transport and removal is consistent for each waste stream in all power plants. This code was validated by comparing the purification resin scaling factors produced with scaling factors derived from small test resin columns taken from reactor coolant sampling streams in a mix of 16 PWRs and BWRs.