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1. 发明专利

JP2004227298A Method for operating plant, and operation apparatus thereof 有权
公开(公告)号：JP2004227298A
公开(公告)日：2004-08-12
申请号：JP2003014471
申请日：2003-01-23
申请人： Hitachi Eng Co Ltd , Hitachi Ltd , 日立エンジニアリング株式会社 , 株式会社日立製作所
发明人： KIMURA RYUSUKE , HISAMOCHI KOUHEI , ODA SHINGO , SATO KENICHI
IPC分类号： G05B9/02
摘要： PROBLEM TO BE SOLVED: To provide a plant operating method by rationalizing a plant starting procedure, while keeping safety in a plant, and suppressing losses in a plant operation stoppage to a minimum, and to provide its apparatus. SOLUTION: The apparatus includes an apparatus state evaluating part 3 for fetching signals from an apparatus monitor part 1 and a seismometer 2, and evaluating the state of each plant constituting apparatus; a plant risk evaluating part 6 and a starting failure risk evaluating part 7 for acquiring an importance degree evaluation result from the evaluation and information intrinsic to the plant, which is previously stored in a plant database 4 and an apparatus database 5; a patrol priority degree evaluating part 8 for deciding the priority order of repair corresponding to the importance degree of each plant constitution apparatus, through the use of the importance degree evaluation result of each apparatus; a plant stop starting failure risk economic loss evaluating part 11 for calculating the loss predicted value concerning plant start up, based on the priority order; and a plant start priority degree determining part 12 for adjusting the start up timing, so as to allow the loss predicted value to be a minimum which is not larger than a prescribed value. COPYRIGHT: (C)2004,JPO&NCIPI

2. 发明专利

JP2004219342A Safety facility for nuclear reactor 有权
标题翻译：核反应堆安全设施
公开(公告)号：JP2004219342A
公开(公告)日：2004-08-05
申请号：JP2003008966
申请日：2003-01-17
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： HISAMOCHI KOUHEI , ODA SHINGO , SATO KENICHI , SUZUKI HIROSHI , MATSUURA MASAYOSHI
IPC分类号： G21C9/00 , G21C13/00 , G21C15/18 , G21D3/04
CPC分类号： Y02E30/40
摘要： PROBLEM TO BE SOLVED: To obtain high reliability in response to common-cause failures and the like while decreasing the physical quantities of facilities in regard to safety facilities for a nuclear power plant. SOLUTION: These safety facilities for a reactor has a reactor pressure vessel 2 contained in a reactor containment vessel 1, main steam pipes 25 and water-supply pipes 26 connected to the reactor pressure vessel 2, water-pouring systems for pouring water into the reactor pressure vessel 2 separately and independently in divisions of them and power source facilities for feeding the equipment in the water-pouring systems separately and independently in each of the divisions. The power source facilities are used as power sources for feeding motor-operated valves 7a, 7b, 7c, 8a, 8b and 8c included in an isolation condenser system where the steam received in a condenser 6 from the main steam pipes 25 by way of a pipe 9 is condensed by the condenser 6 and the condensed water is returned to water-supply pipes 26 through the pipe 63 and the pipes 9 and 63. COPYRIGHT: (C)2004,JPO&NCIPI
摘要翻译：要解决的问题：为了在减少关于核电站的安全设施的设施的物理量的同时，在常见原因故障等方面获得高可靠性。解决方案：反应堆的这些安全设施包括反应堆容纳容器1中的反应堆压力容器2，连接到反应堆压力容器2的主蒸汽管25和供水管26，用于浇注水的浇注系统分别独立地进入反应堆压力容器2，并分别独立地进入反应堆压力容器2和用于在每个分区中单独且独立地将设备供入浇注系统的动力源设施。电源设备被用作用于馈送包括在隔离冷凝器系统中的电动阀7a，7b，7c，8a，8b和8c的电源，其中蒸汽从主蒸汽管25接收在冷凝器6中，通过管9被冷凝器6冷凝，冷凝水通过管63和管9和63返回到供水管26。版权所有（C）2004，JPO＆NCIPI

3. 发明专利

JP2008020234A Emergency core cooling system 有权
标题翻译：应急核心冷却系统
公开(公告)号：JP2008020234A
公开(公告)日：2008-01-31
申请号：JP2006190226
申请日：2006-07-11
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： TAKEDA SATOSHI , ODA SHINGO , HISAMOCHI KOUHEI , KIMURA RYUSUKE
IPC分类号： G21C15/18
CPC分类号： Y02E30/40
摘要： PROBLEM TO BE SOLVED: To provide an emergency core cooling system which makes it possible to recover the liquid level of a coolant in a reactor more rapidly after the occurrence of a loss-of-coolant accident (LOCA). SOLUTION: In a core spray system 44, a cooling water pool 12 and a reactor 2 are connected by a spray pipe 4 equipped with an electrically-driven isolation valve 17a and a blasting valve 8. In a system 45 for supplying pressure suppression pool water, a pressure suppression pool 13 and the reactor 2 are connected by a spray pipe 5 equipped with an electrically-driven isolation valve 17b and a blasting valve 9. If a LOCA happens, the blasting valves 8 and 9 will open one by one and cooling water will be poured into the reactor 2 sequentially by gravity drop from the cooling water pool 12 and the pressure suppression pool 13. When a measured value of a water level gauge 21 placed in the cooling water pool 12 falls below the set point, a controller 23 closes the electrically-driven isolation valve 17a entirely. When a measured value of the water level gauge 22 placed in the pressure suppression pool 13 falls below a set point, a controller 24 closes the electrically-driven isolation valve 17b entirely. COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：提供应急芯冷却系统，其使得可以在冷却剂失效事故（LOCA）发生之后更快速地恢复反应堆中的冷却剂的液面。解决方案：在核心喷雾系统44中，冷却水池12和反应器2通过配备有电动隔离阀17a和喷射阀8的喷射管4连接。在用于提供压力的系统45 抑制池水，压力抑制池13和反应器2通过配备有电动隔离阀17b和喷射阀9的喷射管5连接。如果发生LOCA，则爆破阀8和9将通过一个冷却水将依次通过冷却水池12和压力抑制池13的重力下落而倒入反应器2中。当放置在冷却水池12中的水位计21的测量值低于设定点控制器23完全关闭电动隔离阀17a。当放置在压力抑制池13中的水位计22的测量值低于设定点时，控制器24完全闭合电动隔离阀17b。版权所有（C）2008，JPO＆INPIT

4. 发明专利

JPH06194495A EMERGENCY GAS PROCESSING SYSTEM 失效
公开(公告)号：JPH06194495A
公开(公告)日：1994-07-15
申请号：JP34431592
申请日：1992-12-24
申请人： HITACHI LTD , HITACHI ENG CO LTD
发明人： MIURA SATOSHI , ODA SHINGO , SHISHIDO HIROKATSU , SUZUKI HIROSHI , HORIUCHI TETSUO
IPC分类号： G21F9/02 , G21C9/00 , G21D3/00
摘要： PURPOSE:To achieve simplification of the system and rationalization in the waste treatment of radioactive substance without deteriorating the capturing efficiency of radioactive substance in the emergency gas processing system of nuclear power plant or fuel reprocessing plant. CONSTITUTION:A tank 13 storing a solvent is installed between a filter 8 of an emergency gas processing system and a reactor vessel 5. Gaseous or particulate substance generated in the reactor vessel 5 passes through the solvent and fed to the filter 8 and the solvent in the tank 13 is processed in a liquid waste treatment system. Collection tank in the liquid waste treatment system or an independent collection tank 10 may serve as the tank 13. An active carbon type gas capturing unit 3 in a gas waste treatment system may serve as the filter 8.

5. 发明专利

JPH10142379A RESIDUAL HEAT REMOVAL SYSTEM IN REACTOR FACILITY 失效
公开(公告)号：JPH10142379A
公开(公告)日：1998-05-29
申请号：JP29513596
申请日：1996-11-07
申请人： HITACHI LTD , HITACHI ENG CO LTD
发明人： MIURA SATOSHI , ODA SHINGO , HASHIMOTO KOJI , SUZUKI HIROSHI , SAITO MINORU , HISAMOCHI KOUHEI
IPC分类号： G21C15/18
摘要： PROBLEM TO BE SOLVED: To add a new function capable of removing decay heat regardless of operation of auxiliary cooling system or continuous operation of a pump in addition to the conventional function of residual heat removal system using a residual heat removal system pump. SOLUTION: A circulation loop is formed with a connection line from the steam phase part of reactor pressure vessel 2 to the upper part of primary side of a heat exchanger 6 arranged at high elevation and a connection line from the lower part of the primary side of the heat exchanger 6 to the liquid phase part of the reactor pressure vessel 2, and to the secondary side of the heat exchanger 6, an air discharge line and a water supply line are provided. By this, safety of plant is drastically improved as heat discharge in the air becomes possible in addition to the conventional discharge in sea water without changing much the system configuration of the conventional residual heat removal system.

6. 发明专利

JPH07218684A REACTOR COOLANT PURIFICATION SYSTEM AND ITS OPERATION METHOD 失效
公开(公告)号：JPH07218684A
公开(公告)日：1995-08-18
申请号：JP1257094
申请日：1994-02-04
申请人： HITACHI LTD , HITACHI ENG CO LTD
发明人： ODA SHINGO , SUZUKI HIROSHI , MIURA SATOSHI
IPC分类号： G21C15/18 , G21C19/307
摘要： PURPOSE:To provide a reactor coolant purification system and its operation method for improving the core cooling function during reactor shutdown process and suppressing the sticking of radioactive corrosion product in a residual heat removal system. CONSTITUTION:In reactor shutdown process, the reactor water of 150% flowrate, for example is taken out with CUW (coolant purification) pumps 2a, 2b and sent to the tube part 3A of a recovery heat exchanger 3 to be cooled. It is then cooled in a non-recovery heat exchanger 4 and sent to a filter demineralizer 9 and partly flows in bypass tubes 11. As the flowrate at a bypass valve 8 is controlled to 50%, for example with a controller 73, the flowrate in the filter demineralizer 9 is kept at 100% flowrate. The reactor water is sent in shell part 3B of the recovery heat exchanger 3 to be hated and partly flows in bypass tubes 72. The flowrate at a bypass valve 13 is controlled at 50% for example, with a controller 14 and the flowrate in the shell 3B is resultingly maintained at 100%. Then the reactor water is returned in the pressure vessel 1.

7. 发明专利

JPS5824893A NUCLEAR REACTOR CONTAINER 失效
公开(公告)号：JPS5824893A
公开(公告)日：1983-02-14
申请号：JP12297681
申请日：1981-08-07
申请人： HITACHI LTD , HITACHI ENG CO LTD
发明人： HIRUTA YASUO , ODA SHINGO
IPC分类号： G21C11/02 , G21C11/00 , G21C13/02 , G21C13/028

8. 发明专利

JP2004257300A EMERGENCY DIESEL POWER GENERATING FACILITY 审中-公开
公开(公告)号：JP2004257300A
公开(公告)日：2004-09-16
申请号：JP2003048441
申请日：2003-02-26
申请人： HITACHI LTD , HITACHI ENG CO LTD , IBARAKI HITACHI JOHO SERVICE K
发明人： HASHIMOTO KOJI , ODA SHINGO , SUZUKI HIROSHI , HISAMOCHI KOUHEI , UENO TAKASHI
IPC分类号： G21D3/04 , F02M37/00
摘要： PROBLEM TO BE SOLVED: To allow extension of power generating period by securing fuel supply for an emergency diesel power generating facility. SOLUTION: The emergency diesel power generating facility is equipped with three units of emergency diesel power generators 1, 2, 3, and fuel tanks 4, 5, 6 connected to supply fuel to the emergency diesel power generators 1, 2, 3 respectively. The emergency diesel power generating facility is also equipped with piping connected to circulate fuel among respective fuel tanks 4, 5, 6, and valves 12a-12f mounted in the piping to interrupt a fuel flow in the piping. Fuel in the fuel tank of the emergency diesel power generating facility losing functions at an earthquake, is transferred to the he fuel tank of the emergency diesel power generating facility maintaining functions, whereby retention period of functions can be extended. COPYRIGHT: (C)2004,JPO&NCIPI

9. 发明专利

JPH0990092A REACTOR CONTAINER 失效
公开(公告)号：JPH0990092A
公开(公告)日：1997-04-04
申请号：JP24123695
申请日：1995-09-20
申请人： HITACHI LTD , HITACHI ENG CO LTD
发明人： ODA SHINGO , SUZUKI HIROSHI , MIURA SATOSHI , HASHIMOTO KOJI , SAITO MINORU , KAMITSUMA NOBUAKI
IPC分类号： G21C9/00 , G21C9/04 , G21D3/08
摘要： PROBLEM TO BE SOLVED: To enable removing hydrogen generated in an accident efficiently without stagnation in a reactor container, cooling catalyst reaction heat with a cooler of drywell cooling system and mitigating the effects of temperature rise in the reactor container. SOLUTION: In a reactor container 1, a fan 14, a damper 16, a duct 17, a cooler 15 and catalyst 18 are provided, Here, a hydrogen removing system to efficiently remove hydrogen generated in an accident by guiding to the cooler 15 with the driving force of the fan 14 via the duct 17 and using the catalyst 18 in the cooler 15 is placed.

10. 发明专利

JPH08211184A REACTOR CONTAINMENT AND ITS COMBUSTIBLE GAS CONCENTRATION CONTROLLING METHOD 失效
公开(公告)号：JPH08211184A
公开(公告)日：1996-08-20
申请号：JP1778295
申请日：1995-02-06
申请人： HITACHI LTD , HITACHI ENG CO LTD
发明人： ODA SHINGO , SAITO MINORU , SUZUKI HIROSHI , SEKINE YASUHIRO
IPC分类号： G21C9/00 , G21C17/00 , G21D3/08
摘要： PURPOSE: To take countermeasure against multiple failures of safety system without a fear of oxygen concentration increase in a reactor containment atmosphere by injecting nitrogen in the containment upon receiving a hydrogen and oxygen high concentration signal from a containment atmosphere monitor in case of accident. CONSTITUTION: A controller 16 actuates an inert gas injection system for injecting nitrogen gas into a reactor containment 1 upon receiving a hydrogen and oxygen high concentration signal from a containment atmosphere monitor 4 in case of accident and controls the opening of a reactor containment vent valve 11. When a high radiation does signal is generated in the containment 1, the actuation of the containment vent valve 11 and inert gas system is terminated and reopens the containment vent valve 11 when the containment 1 reaches the design proof pressure and also an inert gas system is controlled to inject nitrogen gas for the case of increase in oxygen concentration due to the actuation of vacuum breaker valve 12 in the containment 1.

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