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发明授权
CN105931691B 核电站乏燃料放射性气体处理方法 有权

核电站乏燃料放射性气体处理方法
摘要：
本发明公开了一种核电站乏燃料放射性气体处理方法，包括以下步骤：S1、通过充气管线将装载乏燃料的运输容器的排水孔与氦气气源连接；通过排气回路将所述运输容器的排气孔与核电站的通风系统连接；S2、开通氦气气源输送氦气，所述氦气通过所述充气管线进入所述运输容器内，稀释所述运输容器内的放射性气体；所述氦气输出压力不超过0.1Mpa；S3、持续输送氦气，使所述运输容器内的氦气和放射性气体的混合气体从所述排气孔排出，通过所述排气回路排至核电站的通风系统。本发明用于在乏燃料卸料时，检测到运输容器内有放射性气体的处理，通过该处理方法将运输容器放射性气体安全排放，保证了运输容器安全及运输容器内乏燃料组件安全。
摘要（英）：

The invention discloses a treatment method for radioactive gas in spent fuel of a nuclear power plant. The treatment method comprises the following steps: S1, connecting a drainage hole of a spent fuel loaded transportation container with a helium gas source through an inflating pipeline, and connecting an exhaust hole of the transportation container with a ventilation system of the nuclear power plant through an exhaust circuit; S2, opening the helium gas source and delivering helium gas, allowing the helium gas to enter the transportation container through the inflating pipeline, and diluting the radioactive gas in the transportation container, wherein the output pressure of the helium gas is no more than 0.1 Mpa; and S3, continuously delivering the helium gas, and allowing the mixed gas of the helium gas and the radioactive gas in the transportation container to be discharged from the exhaust hole to the ventilation system of the nuclear power plant through the exhaust circuit. The method provided by the invention is used for treatment of the radioactive gas detected in the transportation container during unloading of the spent fuel; and through the treatment method, the radioactive gas in the transportation container is safely discharged, so the safety of the transportation container and the safety of spent fuel components in the transportation container are guaranteed.

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