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Experimental results of functional performance of a vacuum vessel pressure suppression system in ITER

Mitsuhiko Shibata, Kazuyuki Takase, Hironori Watanabe, Hajime Akimoto2002年Fusion Engineering and DesignIF 1.7出版社

AbstractAn integrated Ingress-of-Coolant Event (ICE) test facility was constructed to investigate quantitatively effectiveness and functional performance of a vacuum vessel pressure suppression system (VVPSS) during the ICE in International Thermonuclear Experimental Reactor (ITER). The integrated ICE test facility simulated structural components of the ITER VVPSS with a scaling factor of 1/1600. From the present study it was clarified experimentally that the ITER VVPSS is very effective to reduce the pressurization during the ICE because the condensation of vapor within a suppression tank is enhanced and the pressure rise characteristics strongly depend on the cross-sectional area of the relief piping, and then the pressure rise rate in ITER is expected between 100 and 200 kPa s−1.

日本語訳

統合冷却材流入事象(ICE)試験施設を構築し、国際熱核融合実験炉(ITER)における真空容器圧力抑制系(VVPSS)の有効性と機能性能を定量的に調査した。統合ICE試験施設は、ITERのVVPSSの構造部品を1/1600のスケール比で模擬した。本研究により、抑制タンク内での蒸気凝縮が促進され、圧力上昇特性が逃がし配管の断面積に強く依存するため、ITERのVVPSSがICE時の圧力上昇を低減する上で非常に有効であることが実験的に明らかとなった。さらに、ITERにおける圧力上昇率は100~200 kPa s⁻¹になると予想される。

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ITERVacuum vessel
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