Prediction of the relative activity levels of the actinides in a fallout from a nuclear reactor accident

The relative activities of the actinides that can be expected in a fresh fallout from a nuclear reactor (BWR, PWR, RBMK) accident have been estimated from fuel composition calculations. The results can be used to (1) adapt analytical methods to better suit emergency situations, (2) estimate the activity levels of radionuclides not measured and (3) estimate the relative activities of nuclides in unresolved α-peaks. The latter two can be applied to investigations concerning the Chernobyl fallout, in addition to emergency situations.