Operation Results and Technologies on the Safety Systems of the Tritium Process Laboratory at the Japan Atomic Energy Research Institute.

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  • 核融合炉内外におけるトリチウムの回収技術　２．　　日本原子カ研究所トリチウムプロセス研究棟（ＴＰＬ）のトリチウム安全取り扱い技術に関する実績
  • 日本原子力研究所トリチウムプロセス研究棟(TPL)のトリチウム安全取り扱い技術に関する実績
  • ニホン ゲンシリョク ケンキュウショ トリチウム プロセス ケンキュウトウ TPL ノ トリチウム アンゼン トリアツカイ ギジュツ ニ カンスル ジッセキ

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Abstract

The Tritium Process Laboratory (TPL) at JAERI (Japan Atomic Energy Research Institute) is the only facility in Japan using over 1 gram of tritium for fusion R&D. The TPL was constructed on 1984, and its safety systems have been operated since March 1988 (amount of tritium stored in TPL = 18 PBq at March 2002). The average tritium concentration in a stream from a stack of the TPL to the environment was 29 Bq/m ³ ; this is about 1/200 of the regulation value for HTO concentration in exhaust air. The obtained efficiency for tritium removal has been larger than the design values. A series of information for tritium safety technologies was thus obtained through the operations of the TPL. A set of failure data on several main components was also obtained through the operation results of the TPL. R&D for tritium safety technology (tritium accountancy, behavior, and decontamination) has been continued at the TPL.

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