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公开(公告)号：US11373773B2
公开(公告)日：2022-06-28
申请号：US17147368
申请日：2021-01-12
摘要： A containment cask is disclosed for safely transporting and storing radioactive hazardous waste in a dry air environment. The cask comprises a single drum containing the radioactive hazardous waste, a sealed and shielded containment vessel containing the drum, and an outer container. The outer container can be in the form of an outer shield vessel (OSV) made from iron to provide further shielding. This outer container is appropriate for a drum having higher activity waste. The outer container can also be in the form of an overpack assembly that adds protection for atmospheric hazards, but adds little in terms of shielding. This outer container is appropriate for a drum having lower activity waste.
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公开(公告)号：US20190066858A1
公开(公告)日：2019-02-28
申请号：US16117510
申请日：2018-08-30
摘要： A containment cask for safely transporting and storing radioactive hazardous waste in a dry air environment. The cask comprises a single drum containing the radioactive hazardous waste, a sealed and shielded containment vessel containing the drum, and an outer container. The outer container can be in the form of an outer shield vessel (OSV) made from iron to provide further shielding. This outer container is appropriate for a drum having higher activity waste. The outer container can also be in the form of an overpack assembly that adds protection for atmospheric hazards, but adds little in terms of shielding. This outer container is appropriate for a drum having lower activity waste.
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公开(公告)号：US20210296018A1
公开(公告)日：2021-09-23
申请号：US16826533
申请日：2020-03-23
摘要： Embodiments of a thermal divider insert for a dry storage, spent nuclear fuel cask are disclosed. The thermal divider insert enables safe storage of the hazardous nuclear material when one or more air inlets have been fully or partially blocked to an extent that insufficient air flows into the air inlets and through the cask for adequate cooling of the hazardous nuclear material. In one embodiment, the cask comprises a metal canister having a top, bottom, and sidewall. The canister contains the hazardous nuclear material. A concrete overpack contains the metal canister with the hazardous nuclear material. The overpack has a top, bottom, and sidewall. The overpack has an inside surface that is spaced from an outer surface of the canister to create an annular region that permits flow of air between the surfaces for cooling the canister. One or more air inlets near the bottom of the overpack communicate air from an outside environment into the annular region. One or more outlet vents near the top of the overpack communicate air from the annular region to the outside environment. The thermal divider insert extends through a respective outlet vent and into the annular region and is designed to establish two separate and opposite air flows (i.e., inward and outward air flows) through the respective vent and the annular region when the overpack air inlets have been blocked. When not blocked in normal operation, the two air flows both flow upwardly through the annular region and outwardly from the vent.
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公开(公告)号：US20210280331A1
公开(公告)日：2021-09-09
申请号：US17147368
申请日：2021-01-12
摘要： A containment cask is disclosed for safely transporting and storing radioactive hazardous waste in a dry air environment. The cask comprises a single drum containing the radioactive hazardous waste, a sealed and shielded containment vessel containing the drum, and an outer container. The outer container can be in the form of an outer shield vessel (OSV) made from iron to provide further shielding. This outer container is appropriate for a drum having higher activity waste. The outer container can also be in the form of an overpack assembly that adds protection for atmospheric hazards, but adds little in terms of shielding. This outer container is appropriate for a drum having lower activity waste.
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