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DEMO Divertor Cassette and Plasma facing Unit in Vessel Loss-of-Coolant Accident

Author

Listed:
  • Danilo Nicola Dongiovanni

    (ENEA, C.R. Frascati, FSN Department, Via Enrico Fermi, 45, 00044 Frascati, Italy)

  • Matteo D’Onorio

    (Department of Astronautical Electrical and Energy Engineering (DIAEE), Sapienza University of Rome, C.so Vittorio Emanuele II 244, 00186 Rome, Italy)

  • Gianfranco Caruso

    (Department of Astronautical Electrical and Energy Engineering (DIAEE), Sapienza University of Rome, C.so Vittorio Emanuele II 244, 00186 Rome, Italy)

  • Tonio Pinna

    (ENEA, C.R. Frascati, FSN Department, Via Enrico Fermi, 45, 00044 Frascati, Italy)

  • Maria Teresa Porfiri

    (ENEA, C.R. Frascati, FSN Department, Via Enrico Fermi, 45, 00044 Frascati, Italy)

Abstract

As part of the pre-conceptual design activities for the European DEMOnstration plant, a carefully selected set of safety analyses have been performed to assess plant integrated performance and the capability to achieve expected targets while keeping it in a safe operation domain. The DEMO divertor is the in-vessel component in charge of exhausting the major part of the plasma ions’ thermal power in a region far from the plasma core to control plasma pollution. The divertor system accomplishes this goal by means of assemblies of cassette and target plasma facing units modules, respectively cooled with two independentheat-transfer systems. A deterministic assessment of a divertor in-vessel Loss-of-Coolant Accident is here considered. Both Design Basis Accident case simulating the rupture of an in-vessel pipe for the divertor cassette cooling loop, and a Design Extension Conditions accident case considering the additional rupture of an independent divertor target cooling loop are assessed. The plant response to such accidents is investigated, a comparison of the transient evolution in the two cases is provided, and design robustness with respect to safety objectives is discussed.

Suggested Citation

  • Danilo Nicola Dongiovanni & Matteo D’Onorio & Gianfranco Caruso & Tonio Pinna & Maria Teresa Porfiri, 2022. "DEMO Divertor Cassette and Plasma facing Unit in Vessel Loss-of-Coolant Accident," Energies, MDPI, vol. 15(23), pages 1-20, November.
    • Handle: RePEc:gam:jeners:v:15:y:2022:i:23:p:8879-:d:982834
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    References listed on IDEAS

    as
    1. Danilo Nicola Dongiovanni & Matteo D’Onorio, 2021. "Loss of Liquid Lithium Coolant in an Accident in a DONES Test Cell Facility," Energies, MDPI, vol. 14(20), pages 1-15, October.
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    Cited by:

    1. Matteo D’Onorio & Tommaso Glingler & Maria Teresa Porfiri & Danilo Nicola Dongiovanni & Sergio Ciattaglia & Curt Gliss & Joëlle Elbez-Uzan & Pierre Cortes & Gianfranco Caruso, 2023. "Development of a Thermal-Hydraulic Model for the EU-DEMO Tokamak Building and LOCA Simulation," Energies, MDPI, vol. 16(3), pages 1-25, January.

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