Dynamic event tree analysis of a severe accident sequence in a boiling water reactor experiencing a cyberattack scenario

•A DET analysis has been applied to a BWR during a hot shutdown phase.•RAVEN acts as a logic driver while MELCOR simulates the thermal–hydraulic response.•Cyberattack alters plant state variable processed by I&C disabling coolant injection systems.•DET focuses on cyberattack and recovery time that would compromise core integrity.