WASA-BOSS: ATHLET-CD model for severe accident analysis for a generic KONVOI reactor

The work described in this paper is a part of the ongoing joint research project WASA-BOSS, Weiterentwicklung und Anwendung von Severe Accident Codes – Bewertung und Optimierung von Störfallmaßnahmen, aiming at investigation of severe accident scenarios and severe accident management measures in boiling water reactors (BWR) and pressurized water reactors (PWR) [1]. The GRS, IKE and HZDR cooperation is focused on the development of an ATHLET-CD (Analysis of THermal-hydraulics of LEaks and Transients – Core Degradation) code model for a generic PWR of type KONVOI, including investigations of core degradation scenarios and possible accident management. This paper discusses the possible accident management measures (AMM), the ATHLET-CD model as well as the first preliminary simulations for a station blackout (SBO) scenario without and with application of countermeasures.