专利名称：MEASUREMENT OF CONCENTRATION OF RADIOACTIVE MATTER
reactor pressure vessel发明人：OZAWA YOSHIHIRO,ENDOU MASAO
申请号：JP8578881
申请日：19810605
公开号：JPS57200881A
公开日：
19821209
专利内容由知识产权出版社提供
摘要：PURPOSE:To accurately measure a radioactive matter especially in a cooling water by a method wherein an isotope thereof is mixed into a liquid containing the substance by putting it to a sampling piping through which the liquid has been sampled and then, the concentration of the radioactive substance and the isotope thereof is determined in the liquid separately. CONSTITUTION:For example, a cooling water in a pressure vessel 31 of a nuclear reactor is sampled via a valve 47 from a sampling piping 40 through a piping to a desalting device 39 from a heat exchange 38 to measure
<60>Co therein. The isotope <56>Co is fed and mixed thereinto on the upstream of the piping from a solution storage tank 41 through a flowmeter 44, a pump 42 and a valve 43, <60>Co and <56>Co are trapped through a trapper 45 and the total flow rate thereof is measured with a flowmeter 49. <60>Co and <56>Co trapped with a cation paper or the like in the trapper 45 are measured separately and the quantity of <60>Co attached is detected in proportion to <56>Co from the quantity of <56>Co attached to the inner wall of the sampling piping, which makes possible accurate measurement of
<60>Co in the cooling water. The same prodecure is conducted for other radioactive matters.
申请人：HITACHI SEISAKUSHO KK 更多信息请下载全文后查看

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