Development and Validation of ACTYS, an Activation Analysis software

Nuclear reactors require very precise computer software in order to run effectively. I will introduce one such software suite, called ACTYS, which has been developed as part of a long term plan of developing a 3-D nuclear activation software. At present, it predicts the materials’ decay chains and radiological parameters (activity, contact dose, decay heat, gamma source spectra etc). Additionally ACTYS has a module to classify radiological waste. ACTYS is based on a linear chain solution method for the coupled Bateman system and performs favourably as compared with a well-established multi-purpose code system called FISPACT-2007.