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154 条记录 (耗时 0.014 秒)

    Loop seal assembly
    52.
    发明公开
    Loop seal assembly 失效
    Ringverschlussanordnung。

    公开(公告)号：EP0160401A1

    公开(公告)日：1985-11-06

    申请号：EP85302196.2

    申请日：1985-03-29

    申请人： THE BABCOCK & WILCOX COMPANY

    发明人： Casteen, Lynn A. ,  Patel, Raj L. ,  Gilbert, Kim T. ,  Snoke, Steven R.

    IPC分类号： G21C1/08

    CPC分类号： G21C1/09 ,  Y02E30/40

    摘要： (57) Reflective type insulation is utilized to elevate the temperature in the loop seal piping of a loop seal of a pressurizer. Damage to safety valve components and downstream piping caused by water in the piping is substantially reduced by exposing the loop seal piping to heat gain from a portion of the outer surface of the pressurizer. Safety valve allowable sustained operating temperature requirements are considered in the insulation system design.

    摘要翻译： 利用反射型绝缘来提高加压器的环形密封件的环形密封管道中的温度。 通过将环形密封管道暴露于来自加压器的外表面的一部分的热增益，导致管道中由水引起的对安全阀部件和下游管道的损害大大降低。 在绝缘系统设计中考虑了安全阀允许的持续工作温度要求。

    Nuclear reactor
    54.
    发明公开
    Nuclear reactor 失效
    核反应堆。

    公开(公告)号：EP0102631A1

    公开(公告)日：1984-03-14

    申请号：EP83108678.0

    申请日：1983-09-02

    申请人： HITACHI, LTD.

    发明人： Masuhara, Yasuhiro ,  Utamura, Motoaki ,  Kashiwai, Shinichi ,  Yokoyama, Iwao ,  Murata, Shigeto ,  Nakao, Toshitsugu ,  Maeda, Yuichiro

    IPC分类号： G21C9/00 ,  G21C1/08

    CPC分类号： G21C9/00 ,  G21C1/08 ,  Y02E30/40

    摘要： A nuclear reactor is equipped with a cooling water circulation system (2) which includes a water-feed conduit and a drain conduit (5) to circulate the cooling water to and from a pressure vessel (12) which surrounds a reactor core (1), the cooling water having a free liquid level (13) maintained above the reactor core (1). The drain conduit (5) is inserted in the pressure vessel (12) from the upper side toward the lower side relative to free liquid level (13). A double tube (11) consisting of an inner tube (10) and an outer tube (14) maintaining a gap therebetween is formed in the end portion of the drain conduit (5). The inner tube (10) and outer tube (14) being continuous with the drain conduit (5), the opening (7) at the lower end of the inner tube (10) is located below said free liquid level (13) but above the reactor core (1). The opening (15) at the upper end of the outer tube (14) is located above free liquid level (13). The opening (16) at the lower end of said outer tube (14) is located below the reactor core (1).

    Core of light water reactor and fuel assembly
    59.
    发明授权
    Core of light water reactor and fuel assembly 有权
    轻水反应堆和燃料组件的核心

    公开(公告)号：EP2230668B1

    公开(公告)日：2018-03-28

    申请号：EP10005767.8

    申请日：2008-01-24

    申请人： Hitachi, Ltd.

    发明人： Takeda, Renzo ,  Miwa, Junichi ,  Moriya, Kumiaki

    IPC分类号： G21C1/08 ,  G21C3/42

    CPC分类号： G21C1/084 ,  G21C3/328 ,  G21C5/00 ,  G21C2003/3262 ,  G21Y2002/201 ,  G21Y2002/304 ,  G21Y2002/60 ,  G21Y2004/10 ,  G21Y2004/30 ,  G21Y2004/403 ,  Y02E30/31 ,  Y02E30/38

    摘要： The core flow rate of a boiling water reactor (BWR) (19) is adjusted so that it reaches a core flow rate setting that is determined from the characteristic according to the ratio of Pu-239 in transuranic nuclides (TRU) included in a new fuel assembly (1) to be loaded in a core (20). The core flow rate is maintained at the set core flow rate in all operation cycles of the BWR (19). Accordingly, the ratios of a plurality of TRU isotopes included in a fuel assembly (1) when the fuel assembly (1) is taken out of the BWR core (20) as a spent fuel is substantially the same as the ratios of the plurality of TRU isotopes included in a new fuel assembly (1) to be loaded in the BWR core (20). The ratio of Pu-239 in TRU included in the new fuel assembly (1) is 3% or more but 45% or less. As a result, a nuclear proliferation resistance can be increased while restrictive conditions for safety are met, a burnup can be further increased, and TRU multi-recycling becomes feasible.