Conceptual design of the horizontal modular storage system for spent nuclear fuel

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  • Minami Ryogo
    Reserch & Development Department Power Plant Division Plant & Infrastructure Engineering Company Kawasaki Heavy Industries, LTD
  • Nakata Tetsuo
    Reserch & Development Department Power Plant Division Plant & Infrastructure Engineering Company Kawasaki Heavy Industries, LTD
  • Takahashi Nobuyuki
    Kanto Technical Institute, Kawasaki Heavy Industries, Ltd.

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Other Title
  • 使用済み燃料横型サイロ貯蔵施設の基本設計
  • シヨウズミ ネンリョウ ヨコガタ サイロ チョゾウ シセツ ノ キホン セッケイ

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Description

  The Horizontal Modular Storage System is the dry storage system for the spent nuclear fuel, which was developed in the USA. It is one of the candidacy concepts for the interim spent fuel storage facility installed at away from reactor in Japan. We performed the conceptual design to reduce cost and to meet Japanese safety guidelines, rules and standards, fuel specifications and seismic conditions. <br>  To meet Japanese conditions, the heat removal characteristic, the shielding characteristic, the aseismic characteristic and the required space are improved. <br>  We also performed the experiments of the thermal hydraulics in the canister to confirm the heat removal characteristic of the system. The results show that the natural convection of the helium in the canister is effective to remove the residual heat from the spent fuel and the effect is improved when the helium is pressurized. <br>  The storage experience in the USA and the results of this study show, the Horizontal Modular Storage System is acceptable for the interim spent fuel storage facility installed in Japan.

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