Abstract
In the frame of severe accident studies for Light Water
Reactors, Corium Concrete Interaction (CCI) is one of the
phenomena that might lead to a containment failure
through a direct leak to the ground water or as a
consequence of a progressive overpressurization. At the
end of the 90s, the remaining uncertainties on the
melt-through delay and the impossibility to conclude on
the corium melt stabilization by water addition on top of
a corium melt conducted the scientific community to
maintain their R&D efforts. During the last 10 years,
experimental programs in United States or in different
European countries have provided additional results on
corium concrete interaction mechanisms for standard top
cooling conditions but also with an advanced cooling
concept designed for a new reactor generation. Associated
interpretation activities performed in the frame of
international workgroups and the status of models
improvement are briefly described.
Regarding the containment integrity, if we can perform
now more realistic simulations, there is still the need
to increase the knowledge on the different cooling
mechanisms in order to identify in a proactive way the
more promising mitigation options and evaluate the
designers' or utilities' proposals for both new
generation and existing plants. In that perspective the
remaining issues for the different mitigation options are
summarized and the perspectives for new programs
underlined.
Original language | English |
---|---|
Number of pages | 26 |
Publication status | Published - 2010 |
MoE publication type | Not Eligible |
Event | Eurosafe Forum 2010: Innovation in Nuclear Safety and Security - Cologne, Germany Duration: 8 Nov 2010 → 9 Nov 2010 https://www.eurosafe-forum.org/eurosafe2010 |
Seminar
Seminar | Eurosafe Forum 2010 |
---|---|
Country/Territory | Germany |
City | Cologne |
Period | 8/11/10 → 9/11/10 |
Internet address |