Invention Grant
- Patent Title: Container and method for storing spent nuclear fuel
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Application No.: US17256583Application Date: 2018-12-29
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Publication No.: US11605474B2Publication Date: 2023-03-14
- Inventor: Evgenii Dmitrievich Petrov , Andrei Valer'evich Sokolov , Andrei Viktorovich Vildeev , Andrei Mikhailovich Mokeichev
- Applicant: NFC LOGISTICS, JOINT-STOCK COMPANY (NFCL JSC)
- Applicant Address: RU Moscow
- Assignee: NFC LOGISTICS, JOINT-STOCK COMPANY (NFCL JSC)
- Current Assignee: NFC LOGISTICS, JOINT-STOCK COMPANY (NFCL JSC)
- Current Assignee Address: RU Moscow
- Agency: Carstens, Allen & Gourley, LLP
- Agent J. Miguel Hernandez; James R. Gourley
- Priority: RU2018147149 20181228
- International Application: PCT/RU2018/000911 WO 20181229
- International Announcement: WO2020/139123 WO 20200702
- Main IPC: G21F5/12
- IPC: G21F5/12 ; G21F5/02 ; G21F5/005 ; G21F5/008 ; G21C17/07

Abstract:
Method for long-term dry storage of spent nuclear fuel includes injecting the inert gas into a cavity formed in a cask between inner and outer lids under pressure greater than the pressure of the inert gas in the inner cavity of the cask in which the spent nuclear fuel is located. The cask contains a body with a spent nuclear fuel container placed in it, tight inner and outer lids forming a cavity into which the inert gas is pumped under pressure greater than the pressure in the inner cavity of the cask. The outer lid comprises a labyrinth hole closed with a flange and sealed with a gasket. The flange comprises an angle valve, to which at least two pressure sensors are connected. The angle valve and sensors are covered with a protective cover during long-term storage. The gasket is installed in an annular groove of the lower flange.
Public/Granted literature
- US20210319924A1 Container and Method for Storing Spent Nuclear Fuel Public/Granted day:2021-10-14
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