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Advances in Heat Transfer Engineering

ISBN:
1-56700-198-1 (印刷)

LOSS OF FLOW ACCIDENT ANALYSIS OF A WATER-COOLED FUSION REACTOR

Gintaras Zemulis
Helsinki University of Technology, Association Euraiom-TEKES, Po Box 2200, FIN-02015 HUT, Finland

Arvydas Adomavicius
Kaunas University of Technology, K. Donelaicio str. 73, LT-3006 Kaunas, Lithuania

Rainer Salomaa
Helsinki University of Technology, Association Euraiom-TEKES, Po Box 2200, FIN-02015 HUT, Finland

要約

Within the APROS simulation environment we have built a thermo-hydraulic model of a conceptual fusion power plant which is water cooled and uses lithium-lead for tritium breeding. For the safety assessment of this design we have studied an accident sequence which starts from a loss of coolant flow, then leads to first wall breach and pressurisation of the vacuum vessel. Simulations have revealed strong pressure transients which can be alleviated by design changes. One goal is to verify the adequacy of the containment design: it remains intact at least 14 h without any mitigating efforts. Estimates for radioactive releases are obtained.