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Distributed corium monitoring in case of severe accident in a Nuclear Power Plant

Abstract : The DISCOMS project and its issues, regarding current scientific challenges and potential benefits for nuclear plant safety in case of severe accident with reactor vessel failure, have been discussed. We claim such remote monitoring solution based on state-of-the-art of quasi-distributed OFS and specific long-length SPND should greatly contribute to enhance the quality of real time information during such event, providing first responders and nuclear safety people with direct data concerning both the corium location and the health of the 3rd barrier of confinement. In such context, the monitoring system developed in the scope of the DISCOMS project will enable the crisis teams in charge of handling the emergency situations on NPP to reduce the uncertainties associated to some tools currently used for severe accident mitigation (e.g. computations aids based on calculations of pre-defined Severe Accident scenarios). In particular, after the reactor pressure vessel failure, DISCOMS monitoring will provide the precise and real-time view of the progression front of core melt inside the reactor building basemat or the core catcher (if any). Based on this actual representation of the basemat ablation, the crisis team will be able to optimize the recommended mitigation actions, both for accident management on-site and population protection. In April 18, 2016 the International Atomic Energy Agency records 444 Nuclear Power Plants (NPPs) currently in operation and 64 under construction, located in 31 countries, which means the potential market for the DISCOMS solution is worldwide.
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Submitted on : Saturday, December 14, 2019 - 10:11:04 AM
Last modification on : Tuesday, April 28, 2020 - 11:28:14 AM
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  • HAL Id : cea-02339244, version 1

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P. Ferdinand, Frédéric Pouillé, B. Ricque, O. Meziani, Jean-Michel Bourbotte, et al.. Distributed corium monitoring in case of severe accident in a Nuclear Power Plant. 26TH INTERNATIONAL CONFERENCE ON OPTICAL FIBRE SENSORS OFS-26, Sep 2018, Lausanne, Switzerland. ⟨cea-02339244⟩

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