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信頼性を向上させた改良型臨界警報装置の開発

Development of the improved criticality accident alarm system that achieves high reliability

金澤 信之; 眞田 幸尚   ; 鈴木 秀樹; 遠藤 邦明 ; 石井 雅人*; 長谷川 市郎

Kanazawa, Nobuyuki; Sanada, Yukihisa; Suzuki, Hideki; Endo, Kuniaki; Ishii, Masato*; Hasegawa, Ichiro

設置から20年経過したJAEAの臨界警報装置を更新するため、既存の臨界警報装置の保守経験や信頼性評価をもとに、従来より誤警報及び機能喪失に対して信頼性の高い臨界警報装置を開発した。

A Criticality Accident Alarm System (CAAS) was installed as part of criticality safety management for use in reducing the radiation workers could be exposed to in the rare case of a criticality accident. The initial CAAS version was installed to the Tokai Reprocessing Plant (TRP) in the 1980s. In this study, the new CAAS was developed for replacement at the Plutonium conversion development facility (PCDF).

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