The working meeting of the users of АС2 codes (ATHLET, ATHLET-CD, COCOSYS) took place at the end of November in Garching (Germany). Among the participants there were experts from the specialized institutions of Germany, Czech Republic, France, China, Lithuania, Russia and Ukraine. The State Scientific and Technical Center for Nuclear and Radiation Safety was represented by Maksym Vyshemirskyi, Junior Researcher of NPP Thermohydraulic and Probabilistic Safety Analysis Department.
“АС2 computer codes are developed by the German company Gesellschaft für Anlagen - und Reaktorsicherheit (GRS) for computational simulation of unsteady thermohydraulic processes occurring in PWR/WWER light water reactors (ATHLET, ATHLET-CD) and in containment (COCOSYS) at normal operation, operational events and accidents. The ATHLET code is used for the analysis of accidents without core severe damage and special-purpose version of the ATHLET-CD code is used to analyze core severe damage (melting) accidents”, explains the expert.
During the meeting, code developers discussed future upgrades and improvements of codes in the subsequent releases, exchanged their thoughts with the participants and discussed the results of the use of codes.