The Severe Accident Phenomenology (SAP) short course is based on the knowledge gained on Severe Accident in the last three decades. The main purpose is to transfer it to M.Sc.‐Ph.D. students, engineers and researchers recently involved in the study of severe accidents.

This SAP 2023 edition is a sequel to the previous NUGENIA TA2 SAP Courses held in Bologna (2021, online), Cadarache (2019) and Ljubljana (2017). In this edition, updated and extended contents will be presented again face‐to‐face. The program will cover severe accident phenomenology, progression and mitigation in current and future advance water reactors (Generation 2, 3, 3+, SMRs). Severe accident codes and their uncertainties will be also addressed. A special focus will be done on the Fukishima-Daiichi severely damaged reactors and their decommissioning.