NUCLEAR STEAM SUPPLY CASSETTE AND NUCLEAR REACTOR OF PACKAGE TYPE USING IT

摘要

PROBLEM TO BE SOLVED: To provide nuclear steam supply cassettes which can be used for a nuclear power plant as a non-network power source unconnected with an electric power system network and a nuclear reactor of a package type using the cassette. SOLUTION: The nuclear steam supply cassettes 21 are laid out radially from the center in a moderator tank 31 to be filled with a moderator 30. The nuclear steam supply cassettes 21 are equipped with pressure tubes 22, steam generators 23 laid out circumferentially and extending upward from the center of inner walls of the pressure tubes 22 and in-cassette cores 24, fuel assemblies placed below the steam generators 23. The steam tubes 22 have reinforced fiber layers 26 made by wrapping carbon fiber around the outer peripheral face of pressure tube liners 25. Control rods 32 are laid out around the nuclear steam supply cassette 21 located in the center, and a water shielding tank 35 is placed outside the moderator tank 31. Pressure reducing valves 40 and emergency cooling water supply valves 38 are connected to the nuclear steam supply cassettes 21. COPYRIGHT: (C)2004,JPO