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Severe Accident Modeling and Safety Assessment for Fluid-fuel Energy Reactors

Severe Accident Modeling and Safety Assessment for Fluid-fuel Energy Reactors

Objectif

The Molten Salt Reactor (MSR) is considered a game-changer in the field of nuclear energy and a strong asset in the combat against climate change. The expanding R&D programmes in China, EU, Russia, and the USA, lead to a vibrant atmosphere with many bright students entering the scene and new start-up companies eager to commercialize this technology.

The MSR typically consists of a reactor core with a liquid fuel salt, and an integrated treatment unit to clean and control the fuel salt composition. Due to the liquid fuel, the MSR excels on safety and can operate as a breeder with thorium or uranium, or as a burner of spent fuel actinides.

However, to make these promises reality, R&D is needed to demonstrate the inherent safety of the reactor, the feasibility of the fuel cycle facilities, and the path towards licensing and deployment. This will take time during which the safety requirements will become more stringent.

This proposal aims to develop and demonstrate new safety barriers and a more controlled behaviour in severe accidents, based on new simulation models and assessment tools validated with experiments.

Our proposal cover the modelling, analysis, and design improvements on:
• Prevention and control of reactivity induced accidents
• Redistribution of the fuel salt via natural circulation and draining by gravity
• Freezing and re-melting of the fuel salt during draining
• Temperature control of the salt via decay heat transfer to the environment
• Thermo-chemical control of the salt to enhance the radionuclide retention
• Nuclide extraction processes, such as helium bubbling, fluorination, and others
• Redistribution of the source term in the fuel treatment unit
• Assessment and reduction of radionuclide mobility
• Barriers against severe accidents, such as fail-safe freeze plugs, emergency drain tanks, and gas hold-up tanks

The grand objective is to ensure that the MSR can comply with all expected safety requirements in a few decades from now.
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Coordinateur

TECHNISCHE UNIVERSITEIT DELFT

Adresse

Stevinweg 1
2628 Cn Delft

Pays-Bas

Type d’activité

Higher or Secondary Education Establishments

Contribution de l’UE

€ 737 373,62

Participants (13)

Trier par ordre alphabétique

Trier par contribution de l’UE

Tout développer

CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE CNRS

France

Contribution de l’UE

€ 650 702,78

JRC -JOINT RESEARCH CENTRE- EUROPEAN COMMISSION

Belgique

Contribution de l’UE

€ 153 771,04

INSTITUT DE RADIOPROTECTION ET DE SURETE NUCLEAIRE

France

Contribution de l’UE

€ 61 177,53

FRAMATOME

France

Contribution de l’UE

€ 106 262,24

COMMISSARIAT A L ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES

France

Contribution de l’UE

€ 237 152,63

NUCLEAR RESEARCH AND CONSULTANCY GROUP

Pays-Bas

Contribution de l’UE

€ 335 945,92

PAUL SCHERRER INSTITUT

Suisse

Contribution de l’UE

€ 259 358,95

KARLSRUHER INSTITUT FUER TECHNOLOGIE

Allemagne

Contribution de l’UE

€ 235 728,47

POLITECNICO DI MILANO

Italie

Contribution de l’UE

€ 428 648,87

POLITECNICO DI TORINO

Italie

Contribution de l’UE

€ 133 137,59

ELECTRICITE DE FRANCE

France

Contribution de l’UE

€ 119 162,18

CENTRUM VYZKUMU REZ SRO

Tchéquie

Contribution de l’UE

€ 39 578,18

UNIVERSITY OF ONTARIO INSTITUTE OF TECHNOLOGY

Canada

Informations projet

N° de convention de subvention: 847527

État

Convention de subvention signée

  • Date de début

    1 Octobre 2019

  • Date de fin

    30 Septembre 2023

Financé au titre de:

H2020-Euratom-1.1.

  • Budget total:

    € 4 535 245

  • Contribution de l’UE

    € 3 498 000

Coordonné par:

TECHNISCHE UNIVERSITEIT DELFT

Pays-Bas