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    • 54. 发明授权
    • Method of suppressing deposition of radioactive isotope
    • 抑制放射性同位素沉积的方法
    • US08259894B2
    • 2012-09-04
    • US11768437
    • 2007-06-26
    • Hideyuki HosokawaMakoto NagaseSatoshi MorisawaMotoaki SakashitaKatsuo Yokota
    • Hideyuki HosokawaMakoto NagaseSatoshi MorisawaMotoaki SakashitaKatsuo Yokota
    • G21C9/00
    • G21C19/307G21Y2002/103G21Y2004/40
    • A formic acid aqueous solution that contains Fe (II) ions is produced by dissolving metal iron in a formic acid aqueous solution. Nitrogen is supplied from a nitrogen supply device to a chemical liquid tank and then discharged from a discharge line to reduce the dissolved oxygen concentration in the aqueous solution. The chemical liquid tank is filled with the formic acid aqueous solution sealed with nitrogen, and transferred from a factory to a nuclear reactor building designated as radiation-controlled areas. Inside the nuclear reactor building, the chemical liquid tank is installed in a film deposition apparatus connected to a reactor water recirculation pipeline. The formic acid aqueous is supplied from the chemical liquid tank to the inside of the reactor water recirculation pipeline, and then a ferrite film is formed on the inner surface of the reactor water recirculation pipeline.
    • 含有Fe(II)离子的甲酸水溶液是通过将金属铁溶解在甲酸水溶液中制成的。 氮气从氮气供给装置供给到药液罐,然后从排出管路排出,以降低水溶液中的溶解氧浓度。 化学液体罐用氮气密封的甲酸水溶液填充,并从工厂转移到指定为辐射控制区的核反应堆。 在核反应堆建筑物内部,化学液体罐安装在连接到反应堆水再循环管道的成膜装置中。 甲酸水溶液从化学液体罐供应到反应器水循环管道的内部,然后在反应器水循环管道的内表面上形成铁氧体膜。