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67 条记录 (耗时 0.012 秒)

    Low temperature pressure stabilisation of implant component
    1.
    发明公开
    Low temperature pressure stabilisation of implant component 有权
    触电稳定冯Implantkomponenten

    公开(公告)号：EP1072276A1

    公开(公告)日：2001-01-31

    申请号：EP00306470.6

    申请日：2000-07-28

    申请人： DEPUY ORTHOPAEDICS, INC.

    发明人： Hamilton, John V. ,  Schmidt, Mary Beth ,  Greer, Keith

    IPC分类号： A61L27/16 ,  A61L2/08

    CPC分类号： A61L2/081 ,  A61L2/082 ,  A61L2/087 ,  A61L27/16 ,  C08L23/06 ,  C08L2207/068 ,  C08L2312/06 ,  Y10S422/903 ,  Y10S522/911 ,  Y10S522/912

    摘要： Wear resistance and oxidation resistance of polymer material or a polymer component for bioimplantation are improved by packaging a polymer object in a sealed gas impermeable package substantially free of oxygen, irradiating the package with penetrating radiation to an extent sufficient to effect a desired substantial level of cross-linking within the polymer, and warming the packaged object while maintaining an elevated hydrostatic pressure to cause gases released during irradiation to recombine, stabilizing the material against subsequent oxidative change. The pressure stabilization terminates active sites, substantially eliminating free radicals. When applied to finished parts, the process simultaneously hardens and sterilizes the parts without degrading mechanical properties or dimensions. When applied to bulk material or unfinished parts, the part may be subsequent machined or otherwise finished, and sterilized by any conventional means. The procedure achieves high levels of cross linking without increasing susceptibility to aging or chemical degradation.

    摘要翻译： 聚合物材料或用于生物植入的聚合物组分的耐磨性和抗氧化性通过将聚合物物体包装在基本上不含氧的密封气体不可渗透的包装中，通过将穿透辐射照射到足以实现期望的相当程度的交叉 在聚合物内连接并加热包装物体，同时保持升高的静水压力以使照射期间释放的气体重组，使材料稳定，防止随后的氧化变化。 压力稳定终止活性位点，基本上消除自由基。 当应用于成品时，该工艺同时硬化和消毒零件，而不会降低机械性能或尺寸。 当应用于散装材料或未完成的部件时，该部件可以随后被加工或以其他方式完成，并且通过任何常规方式灭菌。 该程序实现了高水平的交联，而不增加对老化或化学降解的易感性。

    NUCLEAR FUEL REPROCESSING PLANT
    2.
    发明授权
    NUCLEAR FUEL REPROCESSING PLANT 失效
    回收厂核燃料。

    公开(公告)号：EP0324862B1

    公开(公告)日：1994-11-09

    申请号：EP88906085.1

    申请日：1988-07-13

    申请人： HITACHI, LTD.

    发明人： SASAKI, Yuko 3-68-402, Shiraume 2-chome ,  HONDA, Takashi 2917-24, Mawatari ,  SHOJI, Saburo 7-6, Moriyama-cho 2-chome ,  KOBAYASHI, Shiro 19-1-402, Ishinazaka-cho 1-chome ,  FURUTANI, Yasumasa 287, Takaba

    IPC分类号： G21C19/46 ,  C23F15/00

    CPC分类号： G21C19/46 ,  Y02W30/883 ,  Y10S422/903

    摘要： This invention relates to a nuclear fuel reprocessing plant for processing a spent nuclear fuel with a nitric acid solution, which is provided with an electrolytic reduction apparatus for reducing the valence of oxidizing metal ions consisting of the nuclear fuel dissolved in the nitric acid solution while their ionic states are kept. The invention relates also to a method of preventing corrosion of a nuclear fuel reprocessing plant for processing a spent nuclear fuel with a nitric acid solution, wherein the valence of oxidizing metal ions consisting of the nuclear fuel dissolved in the nitric acid solution is reduced while their ionic states are kept and electrolytic reduction is carried out so as to generate NOx gas. Thus, the objects of the invention are to provide a nuclear fuel reprocessing plant having a corrosion-proofing system which prevents the corrosion of the apparatus without permitting the precipitation of corrosive metal ions in the nitric acid solution in the form of metal, and the method of corrosion-proofing such a plant.

    Solidification processing apparatus for radioactive waste materials
    5.
    发明公开
    Solidification processing apparatus for radioactive waste materials 失效
    Abrestoffen的Vorrichtung zur Verfestigung von radioaktiven

    公开(公告)号：EP0280426A2

    公开(公告)日：1988-08-31

    申请号：EP88300990.4

    申请日：1988-02-05

    申请人： NGK INSULATORS, LTD. ,  CHICHIBU CEMENT CO., LTD.

    发明人： Kanagawa, Yutaka ,  Ishizaki, Kanjiro Related Products Division ,  Ozawa, Mitsuzo Ozawa Concrete Industries, Co. Ltd.

    IPC分类号： G21F9/34

    CPC分类号： G21F9/008 ,  G21F9/307 ,  Y10S422/903

    摘要： A solidification processing apparatus for radioactive waste materials comprises a tank (2) for a solidifying agent, a waste material vessel (4) connected to the tank (2), pouring control unit (6,7,19) for controlling pouring of the solidifying agent into the vessel, and a heating and curing chamber (12) for heating the vessel (14) by indirect heating unit after pouring the solidifying agent onto the waste materials in the vessel to polymerize and set the solidifying agent, thereby solidifying the radioactive waste materials. With this arrangement, the solidifying agent capable of good impregnation is poured into the vessel (4) filled with radioactive waste materials, and the amount poured is controlled by the pouring control unit (6,7,19). Use of indirect heating avoids risk of combustion if the solidifying agent is combustible. The solidifying agent can be polymerized and set in a relatively short time, and the radioactive waste materials can be stably solidified.

    摘要翻译： 一种用于放射性废料的固化处理装置，包括用于固化剂的罐（2），连接到罐（2）的废料容器（4），用于控制凝固剂的浇注的倾倒控制单元（6,7,19） 试剂加入到容器中，以及加热和固化室（12），用于通过间接加热单元将凝固剂倒入容器中的废料上来加热容器（14），以聚合和固化固化剂，从而固化放射性废物 材料。 通过这种布置，将能够良好浸渍的固化剂倒入填充有放射性废料的容器（4）中，并且倾倒量由倾倒控制单元（6,7,19）控制。 如果固化剂可燃，则使用间接加热可避免燃烧的危险。 固化剂可以在相当短的时间内聚合和固化，放射性废料可以稳定地固化。

    APPARATUS FOR DISPOSAL OF TOXIC MATERIALS SUCH AS RADIOACTIVE WASTE
    7.
    发明公开
    APPARATUS FOR DISPOSAL OF TOXIC MATERIALS SUCH AS RADIOACTIVE WASTE 失效
    用于处置如放射性废物的毒性物质的装置

    公开(公告)号：EP0062393A3

    公开(公告)日：1985-12-18

    申请号：EP82300183

    申请日：1982-01-13

    申请人： GENERAL SIGNAL CORPORATION

    发明人： HOMER, JOHN C. ,  GREAVES, JAMES D.

    IPC分类号： B09B5/00 ,  G21F9/00 ,  G21F9/30 ,  G21F9/36 ,  G21F9/16

    CPC分类号： G21F9/307 ,  G21F9/008 ,  Y10S422/903

    摘要： Method and means for solidifying nuclear waste for permanent disposal are disclosed. A storage con­ tainer, in the preferred form of a drum or barrel (28), is charged with a predetermined amount of liquid poly­ mer resin (119) in an uncatalyzed state. Catalyst-con­ taining frangible ampoules (131) are also positioned in the drum with a rotatable mixer mechanism (65). At a waste filling station (26), the mixer is rotated to break the ampoules so as to mix the catalyst and the resin. The catalyzed resin is then mixed with added waste material from a feed (33) to completely encapsulate the waste prior to solidification of the resin. Monitoring of the filling and mixing process is provided by con­ tinually sensing the torque force being applied to the rotating mixer mechanism. Where the waste is a dustlike, dry particulate material, dust control means and method are also provided.

    摘要翻译： 公开了固化核废料永久处理的方法和手段。 在鼓或桶的优选形式的储存容器中，以非催化状态装入预定量的液体聚合物树脂。 含有催化剂的易碎安瓿也可以用可旋转的混合器机构定位在滚筒中。 在废料填充站，旋转混合器以破坏安瓿，从而混合催化剂和树脂。 然后将催化的树脂与添加的废料混合以在树脂固化之前将废物完全包封。 通过连续地感测施加到旋转混合器机构的扭矩力来提供灌注和混合过程的监测。 在废物是粉尘状的干燥颗粒材料的情况下，还提供了粉尘控制装置和方法。