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Conceptual design study of a high performance commercial HTGR for early introduction

早期導入のための高性能な商用高温ガス炉の概念設計の研究

深谷 裕司; 水田 直紀; 後藤 実; 大橋 弘史; Yan, X. L.

Fukaya, Yuji; Mizuta, Naoki; Goto, Minoru; Ohashi, Hirofumi; Yan, X. L.

早期導入を目的とした商用高温ガス炉の概念設計をこれまで積み上げてきたHTTRの設計、建設運転の経験及び、商用炉設計であるGTHTR300の設計の経験に基づき実施した。熱出力は165MWtであり、入り口出口の冷却材温度は325$$^{circ}$$Cおよび750$$^{circ}$$Cであり、工業用蒸気を供給する。しかしながら、設計要求として炉心出力30MWtのHTTRよりも小さな圧力容器を用いなければならず、高性能な炉心設計を実現するためには、HTTRよりの燃焼度増加、長い燃料交換機関、改良された燃料交換法、燃料要素など挑戦的な技術課題に取り組む必要があった。

Conceptual design study of a commercial High Temperature Gas-cooled Reactor (HTGR) for early introduction has been performed based on the cumulated experience in design, construction, and operation of the High Temperature engineering Test Reactor (HTTR) and design of the commercial Gas Turbine High Temperature Reactor 300 (GTHTR300). The power output is 165 MWt and the inlet and outlet coolant temperatures are 325$$^{circ}$$C and 750$$^{circ}$$C, respectively, to provide steam for industrial utilization. However, given a requirement for the reactor pressure vessel to be smaller even that of the 30 MWt HTTR, several challenging technical problems have to be dealt with to arrive in a high performance core design that provides extended fuel burnup, prolonged refueling period, improved fuel refueling scheme, improved fuel element and so on from the HTTR.

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パーセンタイル:100

分野:Nuclear Science & Technology

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