Process for the Treatment of a Nuclear Graphite Contaminated with Radioelements by Milling the Said Graphite in a Liquid Medium
    2.
    发明授权
    Process for the Treatment of a Nuclear Graphite Contaminated with Radioelements by Milling the Said Graphite in a Liquid Medium 失效
    用于通过在液体介质中研磨所述石墨来处理用空气污染物污染的核石墨的方法

    公开(公告)号:US07500623B2

    公开(公告)日:2009-03-10

    申请号:US10498259

    申请日:2002-12-10

    IPC分类号: B02C19/00

    摘要: A process for the milling of a nuclear graphite contaminated with radioelements includes subjecting the graphite, immersed in a liquid medium, to high-voltage pulses. The liquid medium has a resistivity such that, owing to the effect of the energy conveyed by the said pulses, electric arcs are initiated and, upon contact with the graphite, break the carbon-carbon bonds that make up the graphite. The number of high-voltage pulses is set so as to obtain a given particle size.

    摘要翻译: 用于研磨被放射性元素污染的核石墨的方法包括将浸没在液体介质中的石墨进行高压脉冲。 液体介质具有电阻率,由于由所述脉冲输送的能量的影响,电弧开始,并且在与石墨接触时破坏构成石墨的碳 - 碳键。 设定高压脉冲的数量以获得给定的粒径。

    Method and device for the continuous checking of the activity of dust
    7.
    发明授权
    Method and device for the continuous checking of the activity of dust 失效
    连续检查灰尘活动的方法和装置

    公开(公告)号:US5693949A

    公开(公告)日:1997-12-02

    申请号:US627123

    申请日:1996-04-03

    申请人: Jacques Paris

    发明人: Jacques Paris

    CPC分类号: F23G5/50 G21F9/32 F23G2209/18

    摘要: A device is provided for permitting real time measurement of the activity of dust confined in a ventilation duct. The device includes a radiation emitter for producing a beam for traversing the duct and a light radiation detector placed in front of the beam. The device also includes at least one gamma radiation detector placed facing the ventilation duct. An acquisition unit and a control unit are also provided for acquisition and processing of real time dust activity measurements. Particular utility is found measuring activity of dust leaving a furnace used for melting nuclear installation scrap.

    摘要翻译: 提供了用于允许实时测量限制在通风管道中的灰尘的活动的装置。 该装置包括用于产生用于横穿管道的光束的辐射发射器和放置在光束前方的光辐射检测器。 该装置还包括面向通风管道放置的至少一个伽马辐射检测器。 还提供采集单元和控制单元,用于采集和处理实时灰尘活动测量。 发现特别的用途是测量离开用于熔化核装置废料的炉子的灰尘的活动。