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Severe Accident Phenomenology – 2019 Short Course

CEA Cadarache, France, 9th- 14th September 2019


One-week Course about Severe Accident Phenomenology (SAP)

This course will focus on disseminating the knowledge gained on Severe Accident in the last two decades to Masters-PhD students, young engineers and researchers recently involved in Severe Accident. It will be hosted by the INSTN at CEA-Cadarache, near Aix-en-Provence (France). This short course is a sequel to the previous Ljubljana 2017 and Stockholm 2015 SARNET Courses.

The program will cover severe accident phenomenology, progression and mitigation in current water-cooled (Light Water Reactor and Heavy Water Reactor) Gen. II and III Nuclear Power Plants (NPP), but also the different design solutions in Gen. III NPPs. A special focus will be done on the Fukushima-Daiichi Severe Accident. Compared to the previous editions, this edition of the SAP course will include lectures addressing the specific phenomenology, management, research and simulation of Severe Accidents in Heavy Water reactors. These lectures will be performed by Indian experts from the Homi Bhabha National Institute (HBNI).


The course will be open to University students with a discount fee. The course can contribute for 3 ECTS (with written work) as an advanced course for Masters students (through the European Nuclear Education Network - ENEN).

Information and registration

For more information about prices, accommodation and catering, please refer to the 2019 SARNET short course flyer.

Please complete and return the registration form

If you want to apply for an ENEN + Grant (cf Flyer), please complete the grant form and the registration form.

Please note that for organisational purposes the course must be paid for in advance of the start date. Thank you for your understanding.


After the course, participants will be able to :

  • get familiar with the historical Severe Accidents
  • identify the various phenomena occurring during the different phases of a Severe Accident
  • describe how the different nuclear plant types would react during a Severe Accident,
  • assimilate the different mitigation and management processes which can be implemented in case of Severe Accident
  • assess the consequences of Severe Accident in terms of Crisis management, societal impact, decommissioning


This course will focus on the knowledge gained on Severe Accident (SA) in the last two decades, such as :

  • SA Historical Overview : TMI-2, Fukushima (Including current status)
  • SA Crisis management and societal impact
  • SA Decomissioning
  • Early and late In-Vessel Phase
  • Early containment Failure
  • Hydrogen Risk
  • Steam Explosion
  • Ex-Vessel Phase
  • Source Term
  • Safety Assessment (PSA)
  • European Stress test for French Fleet
  • Visit of PLINIUS and VERDON Facilities
  • Examples of SA Codes (ASTEC + MELCOR)
  • Gen II and III In-Vessel & Ex-vessel Melt Retention
  • In/Ex-vessel phase in HWR
  • SA research, simulation and management in HWRs

The complete program will be released soon. Temporary program

Severe accident network

The network of excellence SARNET (Severe Accident Research NETwork of excellence) was launched in 2004, in the context of the European Commission's 6th PCRD, and was then extended until 2013 in the context of the 7th PCRD. Since mid-2013, the network has been integrated into NUGENIA (NUclear GENeration II & III Association), an international body whose mission is to coordinate all European research on generation II and III reactors. However, the SARNET network's success is now recognised beyond the confines of Europe, with several new partners (from Poland, Canada, Japan, and elsewhere) who are now contributing to its activities, and other parties are still expressing their interest on a regular basis. SARNET’s key objectives are:

  • Improving coordination of research capabilities on core meltdown accidents,
  • Helping to reduce the remaining problems in this area by conducting appropriate joint research programs,
  • Integrating the best state of knowledge in high-performance numerical simulation tools for the evaluation of reactor safety,
  • Disseminating knowledge and training new experts in this field.

SARNET is now open to any NUGENIA member, but other organisations may attend certain events, such as the Severe Accident Phenomenology (SAP) 2019 course.

This SAP 2019 course is a part of the Excellence Spreading activities of SARNET and it will focus on disseminating the knowledge gained on SA in the last two decades to Masters-PhD students, engineers and scientists recently involved in Severe Accident.