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New Approach to Reactor Safety ImprovementS

New Approach to Reactor Safety ImprovementS

Objective

Probabilistic Safety Assessment (PSA) procedures allow to better understand and estimate the likelihood of the most causes prone to initiate nuclear accidents and to identify the most critical elements of the systems. However, despite of the remarkable reliability of current procedures, the 2011 Fukushima Daiichi accident highlighted a number of challenging issues with respect to their application and validity of their results. From this nuclear disaster the upgrading of the current methodological framework appeared to be necessary in areas such as cascading/conjunct events characterization, fragility analyses and uncertainties treatment. New developments in those areas would even enable the extension of their use in accident management.
Based on recent theoretical progresses, the NARSIS project aims at making significant scientific updates of some elements required for the PSA, focusing on external natural events (earthquake, tsunami, flooding, high speed winds...). These improvements mainly concern:
• Natural hazards characterization, considering concomitant external (simultaneous-yet-independent or cascading) events, and the correlation in intra-event intensity parameters;
• Fragility and functionality assessment of main critical NPPs' elements, accounting for conjunct effects (including ageing effects) and interdependencies under single or multiple external aggressions;
• Risk integration combined with uncertainty characterization and quantification, to allow efficient risks comparison and account for all possible interactions and cascade effects;
• Better processing/integration of expert-based information within PSA, through modern uncertainty theories both to represent in flexible manner experts’ judgments and to aggregate them to be used in a comprehensive manner.
The proposed improvements will be tested and validated on simplified and real NPP case studies. Demonstration supporting tools for operational & severe accident management will be also provided.
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Coordinator

COMMISSARIAT A L ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES

Address

Rue Leblanc 25
75015 Paris 15

France

Activity type

Higher or Secondary Education Establishments

EU Contribution

€ 728 626,16

Participants (17)

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BUREAU DE RECHERCHES GEOLOGIQUES ET MINIERES

France

EU Contribution

€ 517 054,50

KARLSRUHER INSTITUT FUER TECHNOLOGIE

Germany

EU Contribution

€ 394 231

TECHNISCHE UNIVERSITEIT DELFT

Netherlands

EU Contribution

€ 400 757,63

GEN ENERGIJA DOO

Slovenia

EU Contribution

€ 263 340

INSTITUT DE RADIOPROTECTION ET DE SURETE NUCLEAIRE

France

EU Contribution

€ 283 848,75

AREVA GMBH

Germany

EU Contribution

€ 305 780,63

ELECTRICITE DE FRANCE

France

EU Contribution

€ 314 985,21

POLITECHNIKA WARSZAWSKA

Poland

EU Contribution

€ 147 250

NARODOWE CENTRUM BADAN JADROWYCH

Poland

EU Contribution

€ 251 750

Teknologian tutkimuskeskus VTT Oy

Finland

EU Contribution

€ 280 183,75

NUCLEAR RESEARCH AND CONSULTANCY GROUP

Netherlands

EU Contribution

€ 204 345,01

UNIVERSITA DI PISA

Italy

EU Contribution

€ 102 852,50

INSTITUT JOZEF STEFAN

Slovenia

EU Contribution

€ 237 550

AGENZIA NAZIONALE PER LE NUOVE TECNOLOGIE, L'ENERGIA E LO SVILUPPO ECONOMICO SOSTENIBILE

Italy

EU Contribution

€ 94 500

APOSS-ANALIZE POUZDAKOSTI I SIGURNOSTI SUSTAVA DRUSTVO S OGRANICENOM ODGOVORNOSCU ZA USLUGE I INZENJERING

Croatia

EU Contribution

€ 113 976

EDF ENERGY R&D UK CENTRE LIMITED

United Kingdom

EU Contribution

€ 103 716

NUCCON GMBH

Austria

EU Contribution

€ 220 725

Project information

Grant agreement ID: 755439

Status

Ongoing project

  • Start date

    1 September 2017

  • End date

    31 August 2021

Funded under:

H2020-Euratom-1.1.

  • Overall budget:

    € 5 470 828,75

  • EU contribution

    € 4 965 472,14

Coordinated by:

COMMISSARIAT A L ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES

France