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    • 1. 发明专利
    • 原子炉圧力容器及び原子炉圧力容器の冷却方法
    • 核反应堆压力容器和核反应堆压力容器冷却方法
    • JP2015040732A
    • 2015-03-02
    • JP2013171061
    • 2013-08-21
    • 株式会社東芝Toshiba Corp
    • AOKI KAZUYOSHIHIOKI HIDEAKISAITO NOBORUNAKAMARU MIKIHIDEMIHASHI TADAHIROTOBIMATSU TOSHIMIKOMURO MITSUOKAMEI NAOYA
    • G21C9/016G21C9/00G21C13/00
    • Y02E30/31
    • 【課題】通常運転時における断熱性能を確保しつつ、シビアアクシデント時において容器本体の底部を良好に冷却可能な原子炉圧力容器を提供する。【解決手段】実施形態によれば、原子炉圧力容器10の容器本体12は、炉心を収容し、当該炉心の鉛直下側に底部16を有する。原子炉圧力容器10は、容器本体12の外側に間隔をあけて設けられており、底部16との間に内部空間22が形成される外壁20と、シビアアクシデント時において底部16の外側から底部16に向けて水を噴射する噴射ノズル30とを有する。外壁20には、シビアアクシデント時において内部空間22の水蒸気を排出する蒸気排出口26が形成されている。原子炉圧力容器10は、通常運転時において蒸気排出口26を閉じる閉止部材をさらに有する。【選択図】図3
    • 要解决的问题:提供一种能够在严重事故发生时适当地冷却容器主体的底部的核反应堆压力容器,同时确保正常运转时的隔热性能。解决方案根据实施例,容器主体 12的核反应堆容器10中包含反应堆芯,并且包括恰好在反应堆芯下方的底部16。 核反应堆10包括:设置在容器主体12的外侧的距离容器主体12一定距离的外壁20,形成在底部16和外壁20之间的内部空间22; 喷射喷嘴30在严重事故发生时从底部16的外部向底部16喷射水。 在外壁20上形成有从严格事故发生时从内部空间22排出蒸气的蒸汽排气口26.核反应堆压力容器10还包括在正常操作期间关闭蒸汽排气口26的关闭构件。
    • 4. 发明专利
    • ELECTRIC POWER PLANT
    • JP2001280104A
    • 2001-10-10
    • JP2000097015
    • 2000-03-31
    • TOSHIBA CORP
    • ITO ARATAHIOKI HIDEAKIKONO SHUNJIMARUME TAKAYUKIOGATA TOMOKO
    • F01K25/10F01K23/02F01K25/00
    • PROBLEM TO BE SOLVED: To improve power generating efficiency, by operating a mixed medium turbine so that an exhaust temperature of the mixed medium turbine is not more than a sea water temperature or an atmospheric temperature and by heating mixed medium liquid by low temperature exhaust heat such as sea water, atmosphere, or the like. SOLUTION: An electric power plant is provided with: a heating apparatus 8 heating mixed medium including low boiling point medium; a gas-liquid separator 10 separating the mixed medium into high concentration mixed medium steam and low concentration mixed medium steam; the mixed medium turbine 11 driven by the separated high concentration mixed medium steam; a vapor condenser device 14 cooling and returning mixed fluid of the mixed medium turbine exhaust and the low concentration mixed medium; a heat exchanger 18 heat-exchanging the returned mixed medium with the sea water or the atmosphere; a condenser 21 condensing at least part of the high concentration mixed medium steam separated in the gas-liquid separator 10; and a supercooling device 13 supercooling cooling fluid by using coolant formed by adiabatic expansion of the condensed medium. The supercooled fluid supercooled by the supercooling device 13 is supplied to the liquid returning device 14 as cooling medium.
    • 5. 发明专利
    • PROCESSING METHOD FOR DISMANTLED BODY SUCH AS RADIO-ACTIVELY CONTAMINATED EQUIPMENT AND ITS TRANSPORTATION CONTAINER
    • JPH0363599A
    • 1991-03-19
    • JP19929589
    • 1989-08-02
    • TOSHIBA CORP
    • FURUMURA SHIROHIOKI HIDEAKI
    • G21F5/002G21F5/005G21F9/28G21F9/36
    • PURPOSE:To decontaminate a metallic material by injecting decontaminating liquid into the transportation container which contains the dismantled body such as the radioactively contaminated equipment and carrying the container in processing facilities,and cleaning the dismantled body in the transportation container after the waste liquid of the decontaminating liquid is discharged. CONSTITUTION:The radioactively dismantled equipment which is removed from atomic power utilizing facilities is processed by cutting, etc., in a dismantling process 1 and stored divisionally in transportation containers by proper quantities in a transportation container storing process 2. Then each transportation container containing the dismantled body is reduced in pressure in a vacuum sucking process 18 and the decontaminating liquid is charged suctionally in a decontaminating liquid injecting process 19. In an in-plant transporting process 4, the container is transported to processing facilities 51 together with the decontaminating liquid and then passed through a decontaminating liquid discharging process 20 and a cleaning process 21 right after reaching the processing facilities 51, and the dismantled body is taken out of the container, which is reused. The dismantled body is stored after a general disposal process 15, reutilization process 16, or radioactivity-level-classified processing process 17 according to the residual radioactivity level of a radioactivity measuring and discriminating process 14.
    • 7. 发明专利
    • TREATMENT SYSTEM FOR RADIOACTIVE WASTE
    • JPS6484200A
    • 1989-03-29
    • JP24320487
    • 1987-09-28
    • TOSHIBA CORPNIPPON ATOMIC IND GROUP CO
    • FURUMURA SHIROHIOKI HIDEAKI
    • G21F9/30G21F9/28
    • PURPOSE:To reduce the cost of disposition by respectively discriminating and disposing waste of a high radioactivity level, waste of an extremely low level, metal waste decontaminated down to a prescribed level, and concrete waste. CONSTITUTION:The radioactive waste accepted in an acceptance treatment stage 1 is discriminated to the radioactive metals and the concrete waste. The metal waste is subjected to measurement and discrimination of the radioactivity level and the kinds of radioactivity in a measurement processing stage 2. The metal waste discriminated to general waste is disposed 5. Of the waste discriminated as the radioactive metal waste, the decontaminatable waste is sent to a decontamination treatment stage 3 and the nondecontaminatable waste is sent to a container packing stage 6 or simple disposition 8. The waste sent to the stage 3 is subjected to the decontamination treatment and is sent to the measurement processing stage 4 where the radioactivity level thereof is again measured. As a result, the waste decontaminated down to the prescribed radioactivity level is disposed 5. The waste failing to be decontaminated down to the prescribed level is sent to the stage 6 and is disposed 7. The waste of the extremely low level is disposed 8.
    • 8. 发明专利
    • Nuclear power generation plant with boiling water reactor
    • 具有锅炉水反应堆的核能发电厂
    • JP2007205923A
    • 2007-08-16
    • JP2006025717
    • 2006-02-02
    • Japan Atom Power Co Ltd:TheToshiba Corp日本原子力発電株式会社株式会社東芝
    • NAKAMARU MIKIHIDEKOJIMA YOSHIHIROARAI KENJIKUROKI MASAHIKOHOSHINO KATSUYUKIHOSHI TAKASHIOTAKA KAZUHIROHIOKI HIDEAKI
    • G21C15/18G21C9/004G21D3/04
    • Y02E30/40
    • PROBLEM TO BE SOLVED: To provide an installation which attains the cooling of a reactor core and a reactor containment vessel over a long period during a piping rupture accident in a nuclear power generation plant with a boiling water reactor which has a reactor containment vessel of a highly pressure-resistant type.
      SOLUTION: The installation is equipped with an emergency condensate system 19 for condensing the steam from a reactor containment vessel 2 and returning it to a reactor pressure vessel 3 again and an outside storage system 20 for storing the condensate from the emergency condensate system 19. The outside storage system 20 has an outside tank 34, a make-up water pipe 35 for cooling a reactor which pours water into the reactor pressure vessel 3 and a pipe 36 for submerging the reactor containment vessel 2 by pouring water into it. The height where the make-up water pipe 35 for cooling the reactor is connected to the reactor pressure vessel 3 and the outside tank 34 is set at the one different from the height where the pipe 36 for submerging the reactor containment vessel 2 is connected to the reactor containment vessel 2 and the outside tank 34. Force of gravitation drives and controls the amount of the water poured into the reactor pressure vessel 3, the timing of the start of the water pouring into the vessel 3, the amount of the water poured into the reactor containment vessel 2 and the timing of the start of the water pouring into vessel 2 respectively.
      COPYRIGHT: (C)2007,JPO&INPIT
    • 要解决的问题:提供一种在具有反应堆容纳的沸水反应堆的核发电厂中在管道破裂事故期间长时间冷却反应堆堆芯和反应堆容器的装置 高耐压型容器。

      解决方案:该装置配备有应急冷凝系统19,用于冷凝来自反应堆容纳容器2的蒸汽并将其再次返回到反应堆压力容器3,以及用于存储来自紧急冷凝系统的冷凝物的外部储存系统20 外部储存系统20具有外部罐34,用于冷却向反应堆压力容器3倒入水的反应器的补充水管35和通过向其中倒入水而将反应堆容纳容器2浸没的管36。 将用于冷却反应器的补充水管35连接到反应堆压力容器3和外部箱34的高度被设定为与用于浸没反应堆容器2的管36连接的高度不同的高度 反应堆容纳容器2和外部罐34.重力驱动并控制浇入反应堆压力容器3的水量,浇注到容器3中的水的开始时间,浇注的水量 进入反应堆安全壳2以及分别开始注入容器2的水的时间。 版权所有(C)2007,JPO&INPIT