Granular fill material for nuclear waste containing modules
    1.
    发明授权
    Granular fill material for nuclear waste containing modules 失效
    包含核废料的颗粒填料

    公开(公告)号:US4950426A

    公开(公告)日:1990-08-21

    申请号:US331341

    申请日:1989-03-31

    IPC分类号: G21F9/36 G21F9/34

    CPC分类号: G21F9/34

    摘要: A granular fill material is disclosed for use in a storage module for the storing of nuclear and hazardous waste materials. The waste materials are packaged in a waste container which is in turn deposited within the storage module, thereby creating a void space between the waste package or packages and the interior sidewalls of the module. The filler material is reintroduced within the module to fill within this void space, to immobilize the waste containers within the module, and to provide a physical and chemical barrier around the waste containers. The granular filler material comprises a sand filler, an absorbent clay such as Wyoming bentonite, and an organic liquid absorbent material such as Fuller's earth. Other constituents that can be mixed in the granular fill material are an acid neutralizing material such as quicklime or slaked lime, and a getter material for absorbing radionuclides. The granular fill material also advantageously enhances the retrievability of waste packages within the module should such retrieval become necessary.

    Inspectable vault system for the disposal of radioactive waste having a
liquid collection system
    2.
    发明授权
    Inspectable vault system for the disposal of radioactive waste having a liquid collection system 失效
    用于处置具有液体收集系统的放射性废物的可检查保险库系统

    公开(公告)号:US4950105A

    公开(公告)日:1990-08-21

    申请号:US330672

    申请日:1989-03-30

    CPC分类号: G21F9/34 B09B1/00 E02D31/004

    摘要: A vault system is disclosed herein for the disposal of hazardous waste formed from vault cells, each of which has a liquid collection and monitoring system. Each vault cell comprises a liquid impermeable floor slab having a drainage channel for collecting liquids, a wall assembly disposed around the periphery of the floor slab, a ceiling slab overlying the wall upper edge of the assembly, and a monitoring and inspection aisleway disposed between the wall assembly and radioactive waste stacked within the vault cell that encompasses the drainage channel to render it both observable and accessible. The floor slab includes a plurality of feeder channels arranged in a rectangular grid pattern that ultimately drain into the drainage channel and are arranged such that each feeder channel collects liquid from a different rectangular zone within the floor slab so that the location of a leakage condition may be generally determined by observing which feeder channel conveys liquid to the drainage channel. A drainage conduit located out of the vault cell includes a transparent trap with a color float for indicating whether liquid is present in the conduit. Each drainage conduit is drained into a manifold conduit which is in turn connected to a collection tank. The flotation device of each drain conduit is rendered accessible and directly observable by means of a subterranean tunnel that links the ends of all such drainage conduits together.

    Side loading vault system and method for the disposal of radioactive
waste
    3.
    发明授权
    Side loading vault system and method for the disposal of radioactive waste 失效
    侧面装载保险库系统和处置放射性废物的方法

    公开(公告)号:US4955983A

    公开(公告)日:1990-09-11

    申请号:US331587

    申请日:1989-03-31

    CPC分类号: B09B1/00 E02D31/004 G21F9/34

    摘要: A side loading system and method for the underground disposal of radioactive waste is disclosed herein. The vault system is formed from at least one vault cell that comprises a floor slab disposed within a recess in the earth, a ceiling slab disposed over the floor slab, an earth cap disposed over the ceiling slab and an elongated wall assembly disposed around the periphery of the floor slab for supporting the ceiling slab and earth cap. The elongated wall assembly is preferably four times as long as it is wide, and includes a back wall and a front wall, the front wall having an accessway for the side loading of radioactive waste. Radioactive waste is loaded in sequential rows starting from the back wall of the vault cell. Such a loading technique, in combination with the elongated shape of the wall assembly, minimizes radiation exposure to the personnel loading the vault cell as the front-most row of waste helps to shield the operators from radioactivity emitted by the balance of the waste contained within the vault cell. Additionally, because the ceiling slab does not depend upon the waste for support, each vault cell can be completely constructed and then inspected for structural faults before radioactive waste is loaded therein. Finally, the side-loading configuration of the vault cells advantageously shelters radioactive waste from ambient weather during the loading operation.

    Storage module for nuclear waste with improved liner
    4.
    发明授权
    Storage module for nuclear waste with improved liner 失效
    核废料储存模块改良衬管

    公开(公告)号:US5431295A

    公开(公告)日:1995-07-11

    申请号:US758220

    申请日:1991-09-12

    申请人: Daniel C. Meess

    发明人: Daniel C. Meess

    CPC分类号: G21F9/34

    摘要: A module for the storage of nuclear waste packages from a nuclear power plant is disclosed comprising a concrete precast container with sidewalls and a bottom, a concrete precast lid removably disposed on upper edges of the sidewalls to close the container, and a cylindrical one-piece seamless liner abutting and covering the interior surface of the container. The liner is provided with anchor elements formed integral with the liner that extend along outside surfaces of the liner sidewalls and bottom wall, and the anchor elements are embedded within the concrete precast sidewalls on the container. The anchor elements are provided by a plurality of ribs which can be T-shaped or dovetail shaped in cross-sectional area and may extend either longitudinally or circumferentially about the liner. The module is manufactured by first forming a one-piece seamless liner including the ribs on its outer surfaces, placing the liner in a mold for the module, and thereafter pouring concrete into the module mold to completely fill the space between the liner and the mold for embedding the ribs within the concrete. The integrally formed liner provides an additional barrier for nuclear wastes that is advantageously devoid of seams or weld joints. The manufacturing method of the invention insures a perfect, gapless fit between the liner and the concrete module.

    摘要翻译: 公开了一种用于从核电站储存核废料包的模块,包括具有侧壁和底部的混凝土预制容器,可拆卸地设置在侧壁的上边缘上以关闭容器的混凝土预制盖,以及圆柱形单件 无缝衬套抵靠并覆盖容器的内表面。 衬套设置有与衬套一体形成的锚定元件,其沿着衬套侧壁和底壁的外表面延伸,并且锚固元件嵌入容器中的混凝土预制件侧壁内。 锚固元件由多个肋构成,其可以是横截面积的T形或燕尾形,并且可以围绕衬套纵向或周向延伸。 该模块通过首先在其外表面上形成包括肋的一体式无缝衬套来制造,将衬垫放置在用于模块的模具中,然后将混凝土浇注到模块模具中以完全填充衬套和模具之间的空间 用于将肋嵌入混凝土内。 一体形成的衬垫为核废料提供了另外的屏障,其有利地不具有接缝或焊缝。 本发明的制造方法确保了衬套和混凝土模块之间的完美无缝配合。