专利名称：Radiation measuring apparatus, prence / abnce of fuel debris using the same,
position measuring apparatus, prence /
abnce of fuel debris and position
measuring method
发明人：森 勇人，岡田 耕一，平野 克彦缘起性空>梦回楼兰
申请号：JP2014015506
申请日：20140130
公开号：JP6246003B2
公开日：
20171213
专利内容由知识产权出版社提供
纽约面积摘要：PROBLEM TO BE SOLVED: To discriminate a gamma-ray sum peak of interference nuclides from a gamma-ray peak of a measuring target nuclide, and to identify whether a fuel debris is prent and the position of the fuel debris in a nuclear reactor plant.SOLUTION: A radiation measuring apparatus compris: a radiation detector 1 for detecting a radiation; a gamma-ray energy analyzer 3; a display device 4 for displaying a gamma-ray energy distribution; a collimator 91 for limiting a viewing angle of the radiation incident on the radiation detector 1; collimator drive means; and a shield body 25 for shielding the radiation detector 1. The collimator drive means moves the collimator 91 forward or backward with respect to the radiation detector 1 and the shield body 25, thereby making variable the viewing angle of the radiation incident on a radiation incident unit. The gamma-ray energy analyzer 3 finds a sum peak count value generated by the simultaneous incidence of a plurality of gamma-rays radiated from a plurality of radioactive nuclides other than the measuring target nuclide from a gamma-
ray peak count value of the gamma-ray energy distribution, and calculates a gamma-ray peak count value of the measuring target nuclide from a difference between a gamma-ray peak count value of the measuring target nuclide obtained by the gamma-ray energy distribution and the sum peak count value.
申请人：日立ＧＥニュークリア・エナジー株式会社
连心眉
地址：茨城県日立市幸町三丁目１番１号值得读的书
不等式的基本公式
国籍：JP
代理人：ポレール特許業務法人
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