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1. 发明授权

US4495142A Monitoring system for monitoring state of nuclear reactor core 失效
标题翻译：核反应堆核心状态监测系统
公开(公告)号：US4495142A
公开(公告)日：1985-01-22
申请号：US245515
申请日：1981-03-19
申请人： Tadakazu Nakayama , Ryozo Tsuruoka , Masaki Matsumoto
发明人： Tadakazu Nakayama , Ryozo Tsuruoka , Masaki Matsumoto
IPC分类号： G21C9/012 , G21C17/00
CPC分类号： G21C9/012 , G21C17/00 , Y02E30/31
摘要： The nuclear reactor container of a boiling water reactor has a dry well and a pressure suppression chamber. The level of the radioactivity in the cooling water filling the pressure suppression chamber is measured by a liquid radiation monitor. An iodine monitor measures a level of the radioactivity of the iodine in the space above the surface of cooling water in the pressure suppression chamber, while a noble gas monitor measures a level of the radioactivity of noble gas in the same space. Outputs from the liquid radiation monitor, the iodine monitor and the noble gas monitor are delivered to an accident judging device which makes judgement as to occurrence of perforation of fuel rods and melt down of fuel rods in the event of a Loss Of Coolant Accident (LOCA), the result of which is displayed at a display device.
摘要翻译：沸水反应堆的核反应堆容器具有干井和压力抑制室。通过液体辐射监测器测量填充压力抑制室的冷却水中的放射性水平。碘监测器测量压力抑制室中冷却水表面上方的碘的放射性水平，惰性气体监测器测量同一空间中惰性气体的放射性水平。来自液体辐射监测器，碘监测器和惰性气体监测器的输出被输送到事故判断装置，其判断在发生冷却剂事故（LOCA）时燃料棒的穿孔发生和燃料棒的熔化），其结果显示在显示装置上。

2. 发明授权

US5019328A Natural circulation type boiling light-water reactor 失效
标题翻译：自然循环型沸水轻水反应堆
公开(公告)号：US5019328A
公开(公告)日：1991-05-28
申请号：US330318
申请日：1989-03-29
申请人： Tsuyoshi Niino , Tadakazu Nakayama , Ryozo Tsuruoka , Minoru Miki , Nobukatsu Iwata , Kazuhito Koyama
发明人： Tsuyoshi Niino , Tadakazu Nakayama , Ryozo Tsuruoka , Minoru Miki , Nobukatsu Iwata , Kazuhito Koyama
IPC分类号： G21C1/08 , G21C15/02 , G21C15/12 , G21C15/16 , G21C15/26
CPC分类号： G21C1/084 , Y02E30/31
摘要： A natural circulation type boiling light-water reactor comprises a pressure vessel, a reactor core disposed within said pressure vessel to heat light water so as to generate main steam, a steam outlet provided in a wall of said pressure vessel for drawing out the main steam therethrough to supply the same to a turbine system, and a steam path along which the main steam flows from the reactor core to the steam outlet. The reactor further comprises a steam guide for prolonging the steam path and/or a radially increased chimney for reducing the velocity of the main steam flowing through the steam path. These causes radioactive isotope .sup.16 N contained in the main steam to flow within the pressure vessel for a time period exceeding its own half-life, so that the inventory of .sup.16 N in the main steam directed towards the turbine system is reduced remarkably. In consequence, shield structures for piping and turbine systems can be reduced in size and weight.
摘要翻译：一种自然循环式沸腾轻水反应器包括压力容器，设置在所述压力容器内的反应堆堆芯，以加热轻水以产生主蒸汽;设置在所述压力容器的壁中的蒸汽出口，用于抽出主蒸汽从而将其提供给涡轮机系统，以及蒸汽通道，主蒸汽沿着蒸汽路径从反应堆堆芯流到蒸汽出口。反应器还包括用于延长蒸汽通道的蒸汽引导件和/或径向增加的烟囱，用于降低流经蒸汽通道的主蒸汽的速度。这些原因使得主蒸汽中所含的放射性同位素16N在压力容器内流动超过其自身的半衰期，使得主蒸汽中导向涡轮机系统的16N的清单明显减少。因此，可以减小管道和涡轮机系统的屏蔽结构的尺寸和重量。

3. 发明授权

US5126101A Apparatus for cleaning up reactor coolant and method of controlling the same 失效
标题翻译：清洁反应器冷却剂的装置及其控制方法
公开(公告)号：US5126101A
公开(公告)日：1992-06-30
申请号：US357168
申请日：1989-05-26
申请人： Tadakazu Nakayama , Tomoko Sugi , Toshihisa Tsukiyama , Ryozo Tsuruoka , Shizuka Hirako
发明人： Tadakazu Nakayama , Tomoko Sugi , Toshihisa Tsukiyama , Ryozo Tsuruoka , Shizuka Hirako
IPC分类号： G21C19/307
CPC分类号： G21C19/307
摘要： An apparatus for cleaning up reactor coolant includes a piping for taking out water in a reactor core, and this piping is provided separately from a primary loop recirculation piping and has its open end located at the bottom of a reactor pressure vessel. The taking-out piping extends upward from the open end within the reactor pressure vessel and extends through and outside of the side wall of the reactor pressure vessel. In a preferred form, the taking-out piping is provided near the highest position of its portion outside the reactor pressure vessel with a siphon brake valve.
摘要翻译：用于清理反应堆冷却剂的装置包括用于在反应堆芯中取出水的管道，并且该管道与主回路再循环管道分开设置，并且其开口端位于反应堆压力容器的底部。取出管道从反应堆压力容器内的开口端向上延伸，并延伸穿过反应堆压力容器的侧壁和外侧。在优选的形式中，取出管道设置在反应堆压力容器外部的最高位置附近，其具有虹吸制动阀。

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