IDENTIFICATION DEVICE AND IDENTIFICATION METHOD OF MOLTEN FUEL

• Main Authors: GUNJI SATOSHI, YOSHIOKA KENICHI, KUMANOMIDO HIRONORI, HAYASHI YAMATO
• Format: Patent
• Language: English; Japanese
• Published: 22.12.2016
• Subjects: MEASUREMENT OF NUCLEAR OR X-RADIATION; MEASURING; PHYSICS; TESTING

PROBLEM TO BE SOLVED: To highly accurately and efficiently identify existence of molten fuel containing a fissionable material and its location by a correlation neutron detection method, using a molten fuel identification device in which a plurality of neutron detectors are placed inside.SOLUTION: A device includes: a cover 2 made of a neutron absorption layer 5 and a gamma ray shielding layer 6, and having an opening lower side; a plurality of neutron detectors 3 placed in the cover 2; and an arithmetic processing part 4 determining a counting rate of a correlation neutron according to an output from the plurality of neutron detectors 3.SELECTED DRAWING: Figure 1 【課題】複数の中性子検出器が内部に配設された溶融燃料同定装置を用い、相関中性子検出法により核分裂性物質を含む溶融燃料の存在及びその位置を高精度で効率的に同定する。【解決手段】中性子吸収層５とガンマ線遮蔽層６からなり下方が開放したカバー２と、前記カバ２ー内に配設された複数の中性子検出器３と、前記複数の中性子検出器３からの出力に基づいて相関中性子の計数率を求める演算処理部４と、を有する。【選択図】図１