CN103578581A - Safety injection tank system pressurized with separated nitrogen gas tank - Google Patents
Safety injection tank system pressurized with separated nitrogen gas tank Download PDFInfo
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- CN103578581A CN103578581A CN201310175034.XA CN201310175034A CN103578581A CN 103578581 A CN103578581 A CN 103578581A CN 201310175034 A CN201310175034 A CN 201310175034A CN 103578581 A CN103578581 A CN 103578581A
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- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C15/00—Cooling arrangements within the pressure vessel containing the core; Selection of specific coolants
- G21C15/18—Emergency cooling arrangements; Removing shut-down heat
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- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C15/00—Cooling arrangements within the pressure vessel containing the core; Selection of specific coolants
- G21C15/02—Arrangements or disposition of passages in which heat is transferred to the coolant; Coolant flow control devices
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
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Abstract
Disclosed herein is a safety injection tank system. In the safety injection tank system, an emergency reactor core cooling water tank and a nitrogen gas tank are isolated from each other. The system pressurized with the separated nitrogen gas tank prevents dissolution of nitrogen gas, and is suitable for breakage accidents of large-sized pipes and small-sized pipes.
Description
Technical field
The high-voltage safety that present invention relates in general to a kind of emergency core cooling system for nuclear reactor injects case system, and more particularly, relate to a kind of Safety Injection case system, in this Safety Injection case system, emergency core cooling water tank and nitrogen box are separated from one another, thereby solved at conventional integral safety and injected the following problems that case system exists: wherein, nitrogen and emergency core chilled water are received within identical case, thereby nitrogen gas dissolvedly when in operation armed state, be injected in nuclear reactor system in emergency core chilled water and afterwards, therefore upset the formation of hot transmission or heat interchange natural convection loop.
In addition, the present invention relates to a kind of Safety Injection case system, this Safety Injection case system comprises a plurality of nitrogen box for high pressure and low pressure object, therefore make its all pressure environment that can be applied to nuclear reactor system, this pressure environment comprises low pressure Large Tube break accident and high pressure midget tube break accident.
Background technology
Usually, safety injection system for nuclear power station is intended to reactor core, supply with chilled water in the situation that there is the cooling medium disappearance accident (LOCA) of nuclear reactor, thereby from reactor core, remove surplus heat, and be intended to keep the geometric configuration of reactor core, thereby realize the cooling for a long time of reactor core.In addition, light-water reactor about pressurization, when there is the situation of large-scale cooling medium disappearance, sufficient emergency core chilled water is supplied with by Safety Injection case (SIT or accumulator), until reactor is filled with the stage again, and chilled water is supplied with by low-voltage safety injection pump in flooding the stage again.
In addition, for example, for the existing Safety Injection case system of the emergency core cooling system of nuclear reactor, as disclosed in Korean Patent No.10-0369247 (registration on January 10th, 2003) " secondary flow of passive type operation changes method and apparatus ", or as in Korean Patent No.10-0402750 (registration on October 9th, 2003) disclosed " for the safety injection system of nuclear reactor " be configured so that generally nitrogen and emergency core chilled water are received within single integral safety injection case, and therefore, chilled water and nitrogen reach and are in contact with one another at the Free Surface place of emergency core chilled water.
Therefore, at above-mentioned conventional integral safety, inject case system following phenomenon occurred: wherein, due between nitrogen and water in the Continuous Contact at surface in contact place, nitrogen gas dissolved in emergency core chilled water.And the nitrogen being dissolved in emergency core chilled water is injected in nuclear reactor system.Therefore the vaporization that, the heat transmission of nuclear reactor system or the formation of natural cooling circuit are cooled in loop nitrogen upset undesirablely.
In addition, for example, in U.S. Patent No. 5,268, in 943 and at " nuclear engineering and design " (" Nuclear Engineering and Design ") Vol.186, in the 279th to 301 pages, disclosed AP600 Core makeup tank (CMT) and disclosed CARR (CP1300) Core makeup tank is piled cooling system (RCS) or pressurizer by reaction under high pressure in NUREG-IA-0134 exert pressure are to discharge the emergency core chilled water of Core makeup tank (CMT) system under the condition at high RCS pressure, and under low RCS pressure, use Safety Injection case to discharge emergency core chilled water.Yet the shortcoming that this configuration has is, when reactor cooling system is during in low pressure, the negotiability required with reactor safety compared, and only the Safety Injection negotiability of Core makeup tank is inadequate.On the contrary, when nuclear reactor system is during in high pressure, due to opposite pressure, the emergency core chilled water that low-voltage safety can not be injected to case is injected into nuclear reactor system.
In order to solve down the problem that for example disclosed " the passive high-voltage safety for the treatment of SBO and LOCA injects case system " found in Korean Patent No.10-1071415 (in registration on September 30th, 2011), the mixed type Safety Injection case that can operate respectively has been proposed in low pressure and high pressure.Problem is, when there is the pressurized accident of nuclear reactor, the pressure of nuclear reactor system, higher than the working pressure (about 4.3MPa) of Safety Injection case, therefore can not be injected into emergency core chilled water in nuclear reactor system.
In this case, if the volume of the nitrogen that Safety Injection case is pressurizeed and pressure are dual (dualized's) in different valves, and afterwards, this dual volume and pressure by together be applied to individual security and inject case, these problems can be solved.Yet, also do not have proposition to meet device or the method for above-mentioned requirements.
Correlation technique document
(patent documentation 1) Korean Patent No.10-0369247 (registration on January 10th, 2003);
(patent documentation 2) Korean Patent No.10-0402750 (registration on October 9th, 2003);
(patent documentation 3) U.S. Patent No. 5,268,943; With
(patent documentation 4) Korean Patent No.10-1071415 (registration on September 30th, 2011).
Summary of the invention
Therefore, the present invention has engraved the above problem of the prior art that appears on one's mind, and the object of the present invention is to provide a kind of by the nitrogen box divergence type Safety Injection case system of separated nitrogen box pressurization, it has overcome the following shortcoming of conventional Safety Injection case system: wherein, nitrogen gas dissolved in emergency core chilled water and be injected into afterwards in nuclear reactor system, therefore upset the formation of hot transmission or Natural Circulation heat exchange loop and therefore in nuclear reactor system cooling, caused serious problem, and it is only applicable in low-voltage accident, Safety Injection case system of the present invention has prevented the dissolving of nitrogen and has had a plurality of working pressures simultaneously, make it possible to be applicable to high pressure accident and low-voltage accident.
In order to realize above target, the invention provides a kind of nitrogen box divergence type Safety Injection case system, this nitrogen box divergence type Safety Injection case system comprises: emergency core cooling water tank, this emergency core cooling water tank inverse nuclear reaction shut-down system is supplied with chilled water; Nitrogen box, this nitrogen box is supplied with nitrogen so that emergency core cooling water tank is pressurizeed; Nitrogen gas supply pipe, this nitrogen gas supply pipe is connected to emergency core cooling water tank by nitrogen box; And emergency core chilled water ascending pipe, this emergency core chilled water ascending pipe is connected to nuclear reactor system by emergency core cooling water tank.
This system can also comprise: nitrogen box isolation valve, and this nitrogen box isolation valve is arranged in nitrogen gas supply pipe so that nitrogen box and emergency core cooling water tank are isolated from each other; Nitrogen non-return valve, this nitrogen non-return valve is arranged in nitrogen gas supply pipe in the mode of connecting with nitrogen tube isolation valve, backflow from urgent Core cooling water tank to nitrogen box when preventing that pressure when emergency core cooling water tank from becoming pressure higher than nitrogen box, thereby and prevent the overvoltage of nitrogen box; Cooling water tank isolation valve, this cooling water tank isolation valve is arranged in emergency core chilled water ascending pipe, so that emergency core cooling water tank and nuclear reactor system are isolated from each other; And chilled water non-return valve, this chilled water non-return valve is arranged in emergency core chilled water ascending pipe in the mode of connecting with cooling water tank isolation valve, to prevent to the backflow of emergency core cooling water tank.
In addition, nitrogen box isolation valve can cut out when the maintenance period of nuclear reactor system nitrogen box and the isolation of emergency core cooling water tank, and can when nuclear reactor system normal running, open.
When in addition, nitrogen non-return valve operates, residing pressure can be set as 4.3MPa with reply Large Tube break accident and can be set as 10MPa with reply midget tube break accident.
In addition, emergency core cooling water tank can be configured to be full of emergency core chilled water, thereby prevent from forming the Free Surface of emergency core chilled water, and prevent from forming the surface in contact between Free Surface and nitrogen, and therefore prevent injected water volume nitrogen gas dissolved when in operation armed state and increase emergency core cooling water tank.
In addition, the invention provides nitrogen box divergence type Safety Injection case system, this nitrogen box divergence type Safety Injection case system comprises: a plurality of nitrogen box, and the plurality of nitrogen box has different working pressures; Emergency core cooling water tank, this emergency core cooling water tank is connected to each in nitrogen box in parallel; Nitrogen gas supply pipe, this nitrogen gas supply pipe is connected each in nitrogen box with emergency core cooling water tank; And emergency core chilled water ascending pipe, this emergency core chilled water ascending pipe is connected to nuclear reactor system by emergency core cooling water tank.
This system can also comprise: nitrogen box isolation valve, and this nitrogen box isolation valve to be being arranged on each the corresponding mode in nitrogen box in nitrogen gas supply pipe, therefore makes each in nitrogen box isolate with emergency core cooling water tank; Nitrogen non-return valve, this nitrogen non-return valve is installed in the mode of connecting with nitrogen shape isolation valve, thereby corresponding with each in the nitrogen box of nitrogen gas supply pipe, therefore prevent the backflow from urgent Core cooling water tank to nitrogen box when pressure at emergency core cold water storage cistern becomes pressure higher than nitrogen box, and therefore prevented the overvoltage of nitrogen box; Cooling water tank isolation valve, this cooling water tank isolation valve is arranged in urgent chilled water ascending pipe so that emergency core cold water storage cistern and nuclear reactor system are isolated from each other; And chilled water non-return valve, this chilled water non-return valve is arranged in emergency core chilled water ascending pipe in the mode of connecting with cooling water tank isolation valve, to prevent to the backflow of emergency core cooling water tank.
In addition, when each that nitrogen box isolation valve can be in the maintenance period of nuclear reactor system nitrogen box and the isolation of emergency core cooling water tank, close, and can when nuclear reactor normal running, open.
In addition, each in nitrogen box can comprise by the first nitrogen box of the nitrogen pressure pressurization of 10MPa; And the second nitrogen box of passing through the nitrogen pressure pressurization of 4.3MPa.
And, emergency core cooling water tank can be configured to fill emergency core chilled water, thereby prevent from forming the Free Surface of emergency core chilled water and prevent from forming the surface in contact between Free Surface and nitrogen, and therefore prevent that nitrogen dissolves when in operation armed state, and increased the injection volume of emergency core chilled water.
In addition, the invention provides Safety Injection case system, this Safety Injection case system comprises: nitrogen loaded safety injected system, and this nitrogen loaded safety injected system is used in above-mentioned nitrogen box divergence type Safety Injection case system one, the pressure by nitrogen that the chilled water being stored in emergency core cooling water tank is injected to nuclear reactor; And steam pressurized type safety injection system, this steam pressurized type safety injection system is injected into the chilled water being stored in emergency core cold water storage cistern in nuclear reactor system by the pressure of high-temperature steam.
Steam pressurized type safety injection system can comprise: pressurizer, and this pressurizer pressurizes so that the chilled water being stored in emergency core cooling tank is injected in nuclear reactor system to emergency core cooling water tank by high pressure steam; Equalizing pipe, this equalizing pipe makes pressurizer be connected with emergency core cooling water tank; Equalizing pipe isolation valve, this equalizing pipe isolation valve is arranged in equalizing pipe so that pressurizer and emergency core cooling water tank are isolated from each other; Equalizing pipe non-return valve, this equalizing pipe non-return valve is arranged in equalizing pipe to prevent that urgent anxious Core cooling water tank is to the backflow of pressurizer in the mode of connecting with equalizing pipe; And equalizing pipe safety valve, this equalizing pipe safety valve is arranged in equalizing pipe in the mode in parallel with equalizing pipe isolation valve and equalizing pipe non-return valve.
As occurred in the above description, the present invention is favourable aspect following: the invention provides by the nitrogen box divergence type Safety Injection case system of separated nitrogen box pressurization, this nitrogen box divergence type Safety Injection case system can prevent the dissolving of nitrogen when in operation armed state, thereby solved the following problems that conventional integral safety injects case: wherein, be equipped with nitrogen and emergency core cold water, the nitrogen that makes to dissolve can be introduced into nuclear reactor and therefore can upset heat transmission and the Natural Circulation of nuclear reactor system.
In addition, as presented from the above description, the present invention is favourable aspect following: the invention provides by the nitrogen box divergence type Safety Injection case system of separated nitrogen box pressurization, in this nitrogen box divergence type Safety Injection case system, emergency core cooling water tank is completely separated with nitrogen box, thereby allow to pressurize not there is not high pressure steam or the analog by pressurizer of emergency core cold water water tank nitrogen gas dissolved in the situation that, therefore and formed the mixed type Safety Injection case system (mixed type SIT) of injecting emergency core chilled water in the situation that there is high pressure accident and low-voltage accident, or high pressure CMT, therefore, this system is easier and has the security system of injection volume of the emergency core chilled water of increase.
In addition, as presented in the above description, the present invention is favourable aspect following: the invention provides by the nitrogen box divergence type Safety Injection case system of separated nitrogen box pressurization, in this nitrogen box divergence type Safety Injection case system, emergency core cooling water tank is completely separated with nitrogen box, thereby the conventional integral safety that allows to hold nitrogen and emergency core chilled water injects the nitrogen volume of case and is full of emergency core chilled water, thereby being increased, the volume of emergency core cooling system is twice.Therefore, the injection rate IR of emergency core chilled water increases, thereby can strengthen the urgent cooling performance of nuclear reactor system.
Moreover, as apparent in description above, the present invention is favourable aspect following: the invention provides by the nitrogen box divergence type Safety Injection case system of separated nitrogen box pressurization, in this nitrogen box divergence type Safety Injection case system, emergency core cooling water tank is completely separated with nitrogen box, thereby allow separated nitrogen box to be set as different pressure and to allow separated nitrogen box is connected to emergency core cooling water tank, therefore, making Safety Injection case according to the different Accident Characteristics of nuclear reactor system,---situation of high pressure accident and low-voltage accident to occur---operates effectively.
In other words, according to the present invention, the nitrogen box with different pressures is connected to emergency core cooling water tank in parallel, thereby realized the Safety Injection case system that can operate under high pressure and low pressure, thereby solved the following shortcoming of conventional Safety Injection case: because conventional Safety Injection case is pressurizeed and operated by single nitrogen pressure, therefore conventional Safety Injection case is become only reply to occur in the low-voltage accident in nuclear reactor system by specialized designs.
Accompanying drawing explanation
By reference to the accompanying drawings in the situation that will by following detailed description more clearly understand of the present invention more than and other objects, feature and advantage, wherein:
Fig. 1 is the explanatory view that the whole configuration of nitrogen box divergence type Safety Injection case system first embodiment of the invention, that pressurize by separated nitrogen box is shown;
Fig. 2 is the explanatory view that the whole configuration of nitrogen box divergence type Safety Injection case system second embodiment of the invention, that pressurize by separated nitrogen box is shown;
Fig. 3 illustrates respectively for conventional Safety Injection case with according to the chart of the injection feature of the emergency core chilled water of the Safety Injection case of the second embodiment of the present invention shown in Fig. 2;
Fig. 4 is the explanatory view illustrating according to the whole configuration of nitrogen box divergence type Safety Injection case system the 3rd embodiment of the present invention, that pressurize by separated nitrogen box;
Fig. 5 is the explanatory view illustrating according to the whole configuration of nitrogen box divergence type Safety Injection case system the 4th embodiment of the present invention, that pressurize by separated nitrogen box.
Embodiment
Hereinafter, describe in detail with reference to the accompanying drawings according to of the present invention by the nitrogen box divergence type Safety Injection case system of separated nitrogen box pressurization.
At this, it should be pointed out that following description only relates to for realizing embodiments of the present invention, but the following embodiment that the present invention is not limited to describe in this article.
In other words, as will be described later, the present invention relates to by the nitrogen box divergence type Safety Injection case system of separated nitrogen box pressurization, in this nitrogen box divergence type Safety Injection case system, nitrogen box and emergency core cooling water tank are separated from one another, and these two casees connect by pipe, thereby substantially prevent when in operation during armed state between emergency core chilled water and nitrogen contact (the phase contact) at the Free Surface place in conventional Safety Injection case, therefore solved and occurred in the following problems that conventional integral safety injects case system: wherein, emergency core chilled water and nitrogen are all received within single container, make that the dissolving of nitrogen occurs and the nitrogen of dissolving is introduced in nuclear reactor system, thereby hot transmission or Natural Circulation have been upset.
In addition, as will be described later, the present invention relates to by the nitrogen box separate type Safety Injection case system of separated nitrogen box pressurization, in this nitrogen box separate type Safety Injection case system, respectively the setting of the volume of nitrogen and original pressure is differently applied, to allow that the pressure of separated nitrogen box is correspondingly applied to low pressure Large Tube break accident and high pressure midget tube break accident, thereby the pressure of separated nitrogen box can be widely used in to high pressure nuclear reactor accident and low pressure nuclear reactor accident.
For this reason, the invention provides Safety Injection case system, this Safety Injection case system is divided into nitrogen box and is full of the water tank of emergency core chilled water, these two casees connect by pipe, and be different from the conventional integral safety that holds emergency core chilled water and nitrogen, inject case, therefore substantially prevented as contact (phase contact) between the Free Surface of emergency core chilled water when operating armed state and nitrogen.
More particularly, as will be described later, the nitrogen box divergence type Safety Injection case system of passing through the pressurization of separated nitrogen box be according to the embodiment of the present invention constructed such that nitrogen box and emergency core cooling water tank separated from one another, these two casees connect by nitrogen ascending pipe, and isolation valve and non-return valve are arranged in nitrogen ascending pipe.Therefore, in the state of nuclear reactor normal running, isolation valve stays open, and makes the pressure of nitrogen box identical with the pressure of emergency core cooling water tank.And for the object of maintenance, Safety Injection box structure of the present invention becomes to allow nitrogen box to be isolated.In addition, Safety Injection case system disposition is useful on the non-return valve of anti-backflow, thereby prevents that emergency core chilled water from refluxing to nitrogen box.
In addition, in the nitrogen box divergence type Safety Injection case system of passing through separated nitrogen box pressurization according to the embodiment of the present invention, if the nitrogen volume of conventional Safety Injection case fills up emergency core chilled water completely, the injection volume of emergency core chilled water becomes about twice of conventional Safety Injection case system.In addition can get rid of when in operation all reaction compartments that emergency core chilled water and nitrogen can react to each other in Safety Injection case during armed state and the Free Surface of emergency core chilled water.
Moreover nitrogen only injects emergency core cooling water tank when emergency core cooling water tank operates.In adverse pressure gradient state at the pressure of emergency core cooling water tank higher than the pressure of nitrogen box (counterpressure gradient state), non-return valve operates to prevent that nitrogen is injected in emergency core cooling water tank.
Therefore, according to the present invention, nitrogen box is separated, and substantially to prevent the high temperature and high pressure steam of the pressurized device of nitrogen or the high-temperature water of nuclear reactor system,---this high-temperature water is pressurized to high pressure by emergency core cooling water tank from low pressure---dissolves, thereby prevented from advance flowing into due to nitrogen the closing of deteriorated and natural convection loop of the heat interchange that nuclear reactor system causes.
In addition, if the present invention is applied in mixed type safety injection system, the present invention can be configured with the high voltage functionality of 10MPa level Core makeup tank (conventional CMT) and the low compression functions that 4.3MPa level security injects case.
In addition, describe in detail with reference to the accompanying drawings above-mentioned according to the embodiment of the nitrogen box separate type Safety Injection case system by the pressurization of separated nitrogen box of the present invention.
First, Fig. 1 is the explanatory view that the whole configuration of nitrogen box divergence type Safety Injection case system 40 first embodiment of the invention, that pressurize by separated nitrogen box is shown.
That is to say, as shown in Figure 1, nitrogen box divergence type Safety Injection case system 40 first embodiment of the invention, by the pressurization of separated nitrogen box is characterised in that, conventional nitrogen pressurization Safety Injection case is divided into respectively nitrogen box 41 and the emergency core cooling water tank 42 of emergency core chilled water is housed.
At this, the reason that emergency core cooling water tank is equipped with emergency core chilled water is because its formation that has prevented forming the Free Surface of emergency core chilled water and therefore prevented the surface in contact between Free Surface and phase nitrogen, thereby has prevented when nitrogen gas dissolved when operating armed state and also make the injection volume of emergency core chilled water double.
In addition, nitrogen box 41 is connected to emergency core cooling water tank 42 by nitrogen gas supply pipe 45, and wherein, nitrogen box isolation valve 43 and nitrogen box non-return valve 44 are arranged in this nitrogen gas supply pipe 45.Emergency core cooling water tank 42 is connected to nuclear reactor system 49 by emergency core chilled water ascending pipe 48, and wherein, cooling water tank isolation valve 46 and chilled water non-return valve 47 are arranged in this emergency core chilled water ascending pipe 48.
At this, when nitrogen box 41 is during in 42 isolation of maintenance period and emergency core cooling water tank, the nitrogen box isolation valve 43 of nitrogen gas supply pipe 45 cuts out, and the nitrogen box isolation valve 43 of nitrogen gas supply pipe 45 is opened when nuclear reactor normal running.
In addition, nitrogen box non-return valve 44 is for preventing the backflow from urgent Core cooling water tank 42 to nitrogen box 41.In other words, in the situation that the pressure of emergency core cooling water tank 42 becomes higher than the pressure of nitrogen box 41, nitrogen non-return valve 44 stops backflow, has therefore prevented the overvoltage of nitrogen box 41.
At this, in order to tackle the object of large-scale break accident, when non-return valve 44 operates, residing nitrogen pressure can be 4.3MPa, or in order to tackle the object of small-sized break accident, when non-return valve 44 operates, residing nitrogen pressure can be about 10MPa.
In addition, above-mentioned cooling water tank isolation valve 46 and chilled water non-return valve 47 are equally for making emergency core cooling water tank 42 and nuclear reactor system 49 isolation and anti-backflow.
In addition, about the above-mentioned configuration of the first embodiment, for example, supposing that it is set to 10MPa execution injection, is possible for replacing the design of existing high head safety injection pump.In this case, nuclear reactor cooling system can only be configured to only by pressure differential, carry out the complete passive injected system of implant operation in the situation that not using driving pump.
At this, the above-mentioned configuration of the first embodiment for only carrying out under the setting pressure by selection high workload pressure or low working pressure.Yet, in the situation that expectation becomes it is all operated under low working pressure and high workload pressure by Safety Injection case System Construction, a plurality of nitrogen box of pressurizeing by corresponding working pressure are connected to single emergency core cooling water tank, as will be described below.
That is to say, Fig. 2 schematically shows the whole configuration of nitrogen box divergence type Safety Injection case system 50 second embodiment of the invention, wherein, Safety Injection case system 50 is constructed so that be connected to single emergency core cooling water tank and therefore under high pressure and low pressure, operated by a plurality of nitrogen box of different working pressure pressurizations.
Hereinafter, will omit the detailed description of the total part of the first embodiment and the second embodiment, and for the sake of clarity, will only describe the different part of the part from the first embodiment of the second embodiment.
More particularly, as shown in Figure 2, second embodiment of the invention, for the nitrogen box divergence type Safety Injection case system 50 operating, be configured so that a plurality of nitrogen box 51 and 52 with different pressures are connected to respectively emergency core cooling water tank 53 in parallel under high pressure and low pressure.For example, according to the system 50 of this embodiment, be configured so that emergency core cooling water tank 53 operates respectively under 4.3MPa and 10MPa.
At this, similar with the first embodiment shown in Fig. 1, each in nitrogen box 51 and nitrogen box 52 is connected to emergency core cooling water tank 53 by nitrogen gas supply pipe 56, and nitrogen gas supply pipe 56 is equipped with nitrogen box isolation valve 54 and nitrogen non-return valve 55.And emergency core cooling water tank 53 is connected to nuclear reactor system 60 by emergency core chilled water ascending pipe 59, this emergency core chilled water ascending pipe 59 is equipped with cooling water tank isolation valve 57 and chilled water non-return valve 58.
At this, when in maintenance period nitrogen box 51 and 52 and during emergency core cooling water tank 53 isolation, the nitrogen box isolation valve 54 of nitrogen gas supply pipe 56 cuts out, and opens when nuclear reactor normal running.
In addition, nitrogen non-return valve 55 is for preventing the backflow from urgent Core cooling water tank 53 to nitrogen box 51 and 52.That is to say, when the pressure of emergency core cooling water tank 53 becomes higher than nitrogen box 51 and 52, the anti-backflow of nitrogen non-return valve 55, thus prevent the overvoltage of nitrogen box 51 and 52.
In this respect, as shown in Figure 2, during each non-return valve 55 operation, residing nitrogen pressure is set as making nitrogen box 51 and nitrogen box 52 to have respectively 10MPa and 4MPa.
Moreover except anti-backflow, above-mentioned cooling water tank isolation valve 57 and chilled water non-return valve 58 are also for making as required emergency core cooling water tank 53 and nuclear reactor system 60 mutually isolate.
Therefore, as shown in Figure 2, the system that can operate under low pressure and high pressure can realize by the nitrogen box 51 and 52 that is set as different operating pressure being connected in parallel to emergency core cooling water tank 53.In this respect, if the pressure of nitrogen box 51 and 52 is set as respectively 10MPa and 4.3MPa, can be formed on the emergency core cooling system injecting the working pressure in the scope of 10MPa to 4.3MPa.
In addition, Fig. 3 is the chart of the injection feature of the emergency core cooling water tank 53 of constructing as shown in Figure 2.
That is to say, as shown in Figure 3, corresponding to the elevated pressure nitrogen gas tank 51 of high head safety injection pump pressure head (about 10MPa) and the nitrogen box 52 of conventional Safety Injection case pressure (about 4.3MPa), be connected in parallel emergency core cooling water tank 53, thereby can realize respectively at high pressure (about 10MPa) and the lower safety injection system operating of low pressure (about 4.3MPa).
Next, with reference to Fig. 4 and Fig. 5, nitrogen box divergence type Safety Injection case system the 3rd embodiment according to the present invention and the 4th embodiment, that pressurize by separated nitrogen box is described.
That is to say, according to nitrogen box divergence type Safety Injection case system 70 and 80 the third and fourth embodiment of the present invention, that pressurize by separated nitrogen box, except the parts of above-mentioned the first and second embodiments, also comprise pressurizer (PZR) 71 and 81.
Hereinafter, for simplified characterization, the identical parts of parts with the first and second embodiments of the third and fourth embodiment are indicated by identical Reference numeral, and in this article by the detailed description of saving identical parts, and only different parts are described.
More particularly, first, with reference to Fig. 4, according to the nitrogen box divergence type Safety Injection case system 70 of passing through separated nitrogen box pressurization of the 3rd embodiment of the present invention, except the parts of the first embodiment, also comprise: pressurizer 71, equalizing pipe 72, equalizing pipe isolation valve 73, non-return valve 74 and equalizing pipe safety valve 75.Pressurizer 71 injects nuclear reactor system 49 by the pressure of high pressure steam by the chilled water being stored in emergency core cooling water tank 42, and equalizing pipe 72 makes pressurizer 71 be connected with emergency core cooling water tank 42.Equalizing pipe isolation valve 73 is arranged in equalizing pipe 72 so that emergency core cooling water tank 42 and pressurizer 71 isolation.Non-return valve 74 is arranged in equalizing pipe 72 in the mode of connecting with equalizing pipe isolation valve 73, to prevent that urgent anxious Core cooling water tank 42 is to the backflow of pressurizer 71.Equalizing pipe safety valve 75 is arranged in equalizing pipe 72 in the mode in parallel with equalizing pipe isolation valve 73 and non-return valve 74, so that emergency core cooling water tank 42 and pressurizer 71 isolation.
In addition, with reference to Fig. 5, according to nitrogen box divergence type Safety Injection case system 80 the 4th embodiment of the present invention, that pressurize by separated nitrogen box, except the parts of the second embodiment, also comprise: pressurizer 81, equalizing pipe 82, equalizing pipe isolation valve 83, non-return valve 84 and equalizing pipe safety valve 85.Pressurizer 81 injects nuclear reactor system 60 by the pressure of high-temperature steam by the chilled water being stored in emergency core cooling water tank 53.Equalizing pipe 82 makes pressurizer 81 be connected with emergency core cooling water tank 53.Equalizing pipe isolation valve 83 is arranged in equalizing pipe 82 so that emergency core cooling water tank 53 and pressurizer 81 isolation.Non-return valve 84 is arranged in equalizing pipe 82 in the mode of connecting with equalizing pipe isolation valve 83, to prevent that urgent anxious Core cooling water tank 53 is to the backflow of pressurizer 81.Equalizing pipe safety valve 85 is arranged in equalizing pipe 82 in the mode in parallel with equalizing pipe isolation valve 83 and non-return valve 84, so that emergency core cooling water tank 53 and pressurizer 81 isolation.
In other words, more particularly, as shown in Figure 4 and Figure 5, pressurizer 71 and 81 holds high pressure steam therein, and the top part of the top part of Safety Injection case 42,53 and pressurizer 71,81 interconnects by equalizing pipe 72,82, make mineralization pressure balance between the pressurizer 71,81 of high pressure and the emergency core cooling water tank 42,53 of low pressure.
That is to say, under operating on low voltage environment, the emergency core chilled water in emergency core cooling water tank 42,53 is injected in nuclear reactor system 49,60 by being contained in the pressure of the nitrogen in nitrogen box 41,51,52.Pressure at nuclear reactor system 49,60 surpasses under the high-pressure work environment of preset critical, and the equalizing pipe isolation valve 73,83 being arranged in equalizing pipe 72,82 is opened, and take the pressure change of emergency core cooling water tank 42,53 is high pressure.Therefore, the emergency core chilled water in emergency core cooling water tank 42,53 is injected in the nuclear reactor system 49,60 of high pressure.
At this, equalizing pipe isolation valve 73,83 for example utilizes motor-driven valve or the pilot-operated type safety relief valve (POSRV) that can be opened and closed by operator.In order to guard against the accident of the cut complete power-off of all electric power, according to prior art, this valve opens or closes by additional battery electric power.Yet problem is, additional reserve battery should be installed to guarantee at least 36 hours to 72 hours or operation more of a specified duration, therefore brought inconvenience, and in addition, battery always maintained and control makes it in upstate, has therefore brought inconvenience.
Therefore, in order to address these problems, as the substituting of existing configuration with additional reserve battery, as shown in Figure 4 and Figure 5, the present invention is constructed so that in the situation that do not use the equalizing pipe safety valve 75,85 that extra electric power or driving are opened by pressure to be installed as in parallel with equalizing pipe isolation valve 73,83, thereby overcome the inconvenience of bringing by installing and keep in repair battery, even and if guaranteed in the reliable operation causing under the accident conditions of complete power-off.
In other words, as described above, the equalizing pipe safety valve 75,85 opening or closing by pressure has been installed, if make to have an accident and therefore the pressure rising between emergency core cooling water tank 42,53 and pressurizer 71,81 and the preset pressure of overpressure balance pipe safety valve 75,85, equalizing pipe safety valve 75,85 is automatically opened by pressure.Therefore, emergency core cooling water tank 42, the 53 mineralization pressure balances of the pressurizer 71,81 of high pressure and low pressure.
In addition, if pressure surpasses above-mentioned preset pressure, equalizing pipe safety valve 75,85 is automatically opened.Therefore, the high pressure steam of pressurizer 71,81 is injected in the emergency core cooling water tank 42,53 of low pressure with to 42,53 pressurizations of emergency core cooling water tank, making the pressure change of emergency core cooling water tank 42,53 is high pressure, and the emergency core chilled water being contained in wherein can be injected in the nuclear reactor system 49,60 of high pressure.
Therefore, according to nitrogen box divergence type Safety Injection case system 70 and 80 the third and fourth embodiment of the present invention, by the pressurization of separated nitrogen box, also comprise: pressurizer (PZR) 71 and 81, equalizing pipe isolation valve 73 and 83 and equalizing pipe safety valve 74 and 84.Therefore the chilled water, being stored in emergency core cooling water tank 42,53 can be by being used the dual structure of the nitrogen pressure of nitrogen box 41,51,52 and the vapor pressure of pressurizer 71,81 to inject nuclear reactor system 49,60.
In addition, according to the present invention, undertaken manually where necessary or operated from a distance is possible by equalizing pipe isolation valve 73,83, this equalizing pipe isolation valve 73,83 comprises motor-driven valve or the POSRV that can be opened or closed by operator.Meanwhile, even if in the situation that cause all electric power still can automatically be opened by this valve of the complete loss of power accident of equalizing pipe safety valve 75,85 cut-outs.
Therefore, as described above, can realize according to of the present invention by the nitrogen box divergence type Safety Injection case system of separated nitrogen box pressurization.
In to the description of the nitrogen box divergence type Safety Injection case system by separated nitrogen box pressurization according to the present invention, the motor-driven valve that the valve of being indicated by Reference numeral M in the drawings (that is, isolation valve and shut-off valve) representative is driven by motor.The valve (that is, retaining valve and safety valve) of indication is not by pressure-actuated valve in the situation that there is no auxiliary power or driving.
Therefore, as described above, according to nitrogen box divergence type Safety Injection case system first to fourth embodiment of the present invention, that pressurize by separated nitrogen box, can be applied in hyperbaric environment and environment under low pressure, and can be in the situation that do not have the standby power supply of battery for example to guarantee operation more reliably, even if in the situation that to cause the accident of complete power-off be also like this.
In addition, according to the nitrogen box divergence type Safety Injection case system by the pressurization of separated nitrogen box of the present invention, be intended to fill the even nitrogen part in the top part of conventional emergency core cooling water tank with emergency core chilled water, the effective cooling water volume that makes to inject the emergency core chilled water of nuclear reactor system increases and is twice, and do not increase the size of emergency core cooling water tank, thereby improved widely the cooling performance of nuclear reactor.
In other words, according to the advantage of the nitrogen box divergence type Safety Injection case system by separated nitrogen box pressurization of the present invention, be, its Function Extension that conventional low-voltage safety is injected to case injects to high-voltage safety, prevented that nitrogen from dissolving and gathering in Safety Injection case, and made the active volume of emergency core chilled water increase nearly one times.
Moreover, according to the present invention, corresponding to the elevated pressure nitrogen gas tank of high head safety injection pump pressure head and the nitrogen box of conventional Safety Injection case pressure, be connected in parallel emergency core cooling water tank, thereby can realize the Safety Injection case system that can operate under high pressure and low pressure.
Although disclose the preferred embodiment of the present invention for exemplary object, it should be appreciated by those skilled in the art that and do not departing from of the present inventionly as in scope and spirit disclosed in the accompanying claims in the situation that, different modifications, increase and replacement are possible.
Claims (9)
1. a nitrogen box divergence type Safety Injection case system, comprising:
Emergency core cooling water tank, described emergency core cooling water tank inverse nuclear reaction shut-down system is supplied with emergency core chilled water;
Nitrogen box, described nitrogen box is supplied with nitrogen to described emergency core cooling water tank, so that described emergency core cooling water tank is pressurizeed;
Nitrogen gas supply pipe, described nitrogen gas supply pipe is connected to described emergency core cooling water tank by described nitrogen box; And
Emergency core chilled water ascending pipe, described emergency core chilled water ascending pipe makes described emergency core cooling water tank be connected with described nuclear reactor system.
2. nitrogen box divergence type Safety Injection case system according to claim 1, also comprises:
Nitrogen box isolation valve, described nitrogen box isolation valve is arranged in described nitrogen gas supply pipe so that described nitrogen box and described emergency core cooling water tank are isolated mutually;
Nitrogen non-return valve, described nitrogen non-return valve is arranged in described nitrogen gas supply pipe in the mode of connecting with described nitrogen box isolation valve, backflow from described emergency core cooling water tank to described nitrogen box when preventing that pressure when described emergency core cooling water tank from becoming pressure higher than described nitrogen box, thereby and prevent the overvoltage of described nitrogen box;
Cooling water tank isolation valve, described cooling water tank isolation valve is arranged in described emergency core chilled water ascending pipe, so that described emergency core cooling water tank and described nuclear reactor system are isolated mutually; And
Chilled water non-return valve, described chilled water non-return valve is arranged in described emergency core chilled water ascending pipe, to prevent to the backflow of described emergency core cooling water tank in the mode of connecting with described cooling water tank isolation valve.
3. nitrogen box divergence type Safety Injection case system according to claim 2, wherein, described nitrogen box isolation valve cuts out when nitrogen box described in the maintenance period of described nuclear reactor system and the isolation of described emergency core cooling water tank, and described nitrogen box isolation valve is opened when described nuclear reactor system normal running.
4. nitrogen box divergence type Safety Injection case system according to claim 3, wherein, in order to tackle Large Tube break accident, during described nitrogen non-return valve operation, residing nitrogen pressure is set as 4.3MPa, and in order to tackle midget tube break accident, during described nitrogen non-return valve operation, residing nitrogen pressure is set as 10MPa.
5. nitrogen box divergence type Safety Injection case system according to claim 4, wherein, described emergency core cooling water tank is configured to be full of described emergency core chilled water, therefore prevent from forming the Free Surface of described emergency core chilled water and prevent from forming the surface in contact between described Free Surface and nitrogen, thus and nitrogen gas dissolved and increased the injection volume of described emergency core chilled water described in preventing when in operation armed state.
6. a nitrogen box divergence type Safety Injection case system, comprising:
A plurality of nitrogen box, described a plurality of nitrogen box have different working pressures;
Emergency core cooling water tank, described emergency core cooling water tank is connected to nitrogen box described in each in parallel;
Nitrogen gas supply pipe, described nitrogen gas supply pipe makes nitrogen box described in each be connected with described emergency core cooling water tank; And
Emergency core chilled water ascending pipe, described emergency core chilled water ascending pipe is connected to described nuclear reactor system by described emergency core cooling water tank.
7. nitrogen box divergence type Safety Injection case system according to claim 6, also comprises:
Nitrogen box isolation valve, described nitrogen box isolation valve is arranged in described nitrogen gas supply pipe in the mode corresponding with nitrogen box described in each, thereby makes nitrogen box and the isolation of described emergency core cooling water tank described in each;
Nitrogen non-return valve, described nitrogen non-return valve is in series installed with mode and the described nitrogen box isolation valve corresponding with nitrogen box described in each of described nitrogen gas supply pipe, thereby prevent the backflow from described emergency core cooling water tank to described nitrogen box when pressure when described emergency core cooling water tank becomes pressure higher than described nitrogen box, thereby and prevent the overvoltage of described nitrogen box;
Cooling water tank isolation valve, described cooling water tank isolation valve is arranged in described emergency core chilled water ascending pipe so that described emergency core cooling water tank and described nuclear reactor system are isolated mutually; And
Chilled water non-return valve, described chilled water non-return valve is arranged in described emergency core chilled water ascending pipe in the mode of connecting with described cooling water tank isolation valve, to prevent to the backflow of described emergency core cooling water tank,
Wherein, described nitrogen box isolation valve cut out when nitrogen box and the isolation of described emergency core cooling water tank described in each in the maintenance period of described nuclear reactor system, and described nitrogen box isolation valve is opened when described nuclear reactor system normal running.
8. a Safety Injection case system, comprising:
Nitrogen loaded safety injected system, the utilization of described nitrogen loaded safety injected system is injected nuclear reactor system according to the nitrogen box divergence type Safety Injection case system described in any one in claim 1 to 10, pressure by nitrogen by the chilled water being stored in emergency core cooling water tank; And
Steam pressurized type safety injection system, described steam pressurized type safety injection system injects described nuclear reactor system by the pressure of high pressure steam by the described chilled water being stored in described emergency core cooling water tank.
9. Safety Injection case system according to claim 8, wherein, described steam pressurized type safety injection system comprises:
Pressurizer, described pressurizer pressurizes to described emergency core cooling water tank by described high pressure steam, so that the described chilled water being stored in described emergency core cooling water tank is injected to described nuclear reactor system;
Equalizing pipe, described equalizing pipe makes described pressurizer be connected with described emergency core cooling water tank;
Equalizing pipe isolation valve, described equalizing pipe isolation valve is arranged in described equalizing pipe so that described pressurizer and described emergency core cooling water tank are isolated mutually;
Equalizing pipe non-return valve, described equalizing pipe non-return valve is arranged in described equalizing pipe in the mode of connecting with described equalizing pipe isolation valve, to prevent the backflow from described emergency core cooling water tank to described pressurizer; And
Pressure equilibrium safety valve, described pressure equilibrium safety valve is arranged in described equalizing pipe in the mode in parallel with described equalizing pipe isolation valve and described equalizing pipe non-return valve.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020120085114A KR101373676B1 (en) | 2012-08-03 | 2012-08-03 | Safety injection tank system pressurized with separated nitrogen gas tank |
| KR10-2012-0085114 | 2012-08-03 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103578581A true CN103578581A (en) | 2014-02-12 |
| CN103578581B CN103578581B (en) | 2016-05-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310175034.XA Expired - Fee Related CN103578581B (en) | 2012-08-03 | 2013-05-13 | The Safety Injection case system of pressurizeing by the nitrogen box separating |
Country Status (3)
| Country | Link |
|---|---|
| KR (1) | KR101373676B1 (en) |
| CN (1) | CN103578581B (en) |
| FR (1) | FR2994321B1 (en) |
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| CN105280248A (en) * | 2014-07-09 | 2016-01-27 | 国核华清（北京）核电技术研发中心有限公司 | Passive pressure accumulation safety injection system and passive pressure accumulation safety injection method |
| CN105427903A (en) * | 2015-12-11 | 2016-03-23 | 哈尔滨工程大学 | Recycling safety injection system adopting gas-liquid booster pump and applied to nuclear power plant |
| CN105513650A (en) * | 2015-12-04 | 2016-04-20 | 国家电网公司 | Flushing method of AP1000 passive reactor core cooling system |
| CN105741887A (en) * | 2014-12-11 | 2016-07-06 | 中广核工程有限公司 | Nuclear power plant passive reactor cavity water injection system and method |
| WO2021138806A1 (en) * | 2020-01-07 | 2021-07-15 | 中广核研究院有限公司 | Safety system for handling severe accident of nuclear power plant and control method therefor |
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| KR101446709B1 (en) * | 2014-02-27 | 2014-10-06 | 한국원자력연구원 | Passive High Pressure Safety Injection System with Anti-Thermal Mixing Device |
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| KR102348091B1 (en) * | 2020-04-01 | 2022-01-10 | 한국원자력연구원 | Steam generator accident mitigation system |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63173997A (en) * | 1987-01-13 | 1988-07-18 | 三菱重工業株式会社 | Emergency core cooling facility for pressurized water type reactor |
| US5309488A (en) * | 1991-04-26 | 1994-05-03 | Mitsubishi Jukogyo Kabushiki Kaisha | Emergency reactor coolant accumulator |
| CN1864037A (en) * | 2003-11-20 | 2006-11-15 | 穆丹制造公司 | Co2 cooling system |
| CN101558261A (en) * | 2007-03-16 | 2009-10-14 | 阿雷瓦核能有限责任公司 | Safety device for protecting against excess pressure in a pressure guiding system |
| KR101071415B1 (en) * | 2011-04-15 | 2011-10-07 | 한국수력원자력 주식회사 | High pressure safety injection tank system for loca and sbo |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5268943A (en) | 1992-06-24 | 1993-12-07 | Westinghouse Electric Corp. | Nuclear reactor with makeup water assist from residual heat removal system |
| KR100899110B1 (en) * | 2007-10-22 | 2009-05-25 | 경희대학교 산학협력단 | Safety Injection Tank Device using Azide Propellants |
| KR20120038638A (en) * | 2010-10-14 | 2012-04-24 | 한국수력원자력 주식회사 | Safety injection tank using flashing process under depressurization for pressurized water reactors |
-
2012
- 2012-08-03 KR KR1020120085114A patent/KR101373676B1/en active IP Right Grant
-
2013
- 2013-05-13 CN CN201310175034.XA patent/CN103578581B/en not_active Expired - Fee Related
- 2013-05-13 FR FR1354246A patent/FR2994321B1/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63173997A (en) * | 1987-01-13 | 1988-07-18 | 三菱重工業株式会社 | Emergency core cooling facility for pressurized water type reactor |
| US5309488A (en) * | 1991-04-26 | 1994-05-03 | Mitsubishi Jukogyo Kabushiki Kaisha | Emergency reactor coolant accumulator |
| CN1864037A (en) * | 2003-11-20 | 2006-11-15 | 穆丹制造公司 | Co2 cooling system |
| CN101558261A (en) * | 2007-03-16 | 2009-10-14 | 阿雷瓦核能有限责任公司 | Safety device for protecting against excess pressure in a pressure guiding system |
| KR101071415B1 (en) * | 2011-04-15 | 2011-10-07 | 한국수력원자력 주식회사 | High pressure safety injection tank system for loca and sbo |
Cited By (10)
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|---|---|---|---|---|
| CN105280248A (en) * | 2014-07-09 | 2016-01-27 | 国核华清（北京）核电技术研发中心有限公司 | Passive pressure accumulation safety injection system and passive pressure accumulation safety injection method |
| CN105280248B (en) * | 2014-07-09 | 2018-06-26 | 国核华清（北京）核电技术研发中心有限公司 | Passive pressure accumulation safety injection system and passive pressure accumulation peace injecting method |
| CN105741887A (en) * | 2014-12-11 | 2016-07-06 | 中广核工程有限公司 | Nuclear power plant passive reactor cavity water injection system and method |
| CN105741887B (en) * | 2014-12-11 | 2017-11-14 | 中广核工程有限公司 | The passive Reactor cavity flooding system and method for nuclear power station |
| CN105513650A (en) * | 2015-12-04 | 2016-04-20 | 国家电网公司 | Flushing method of AP1000 passive reactor core cooling system |
| CN105427903A (en) * | 2015-12-11 | 2016-03-23 | 哈尔滨工程大学 | Recycling safety injection system adopting gas-liquid booster pump and applied to nuclear power plant |
| CN113892152A (en) * | 2019-05-23 | 2022-01-04 | 法玛通股份有限公司 | Systems and methods for removing irradiation targets from nuclear reactors and radionuclide generation systems |
| CN113892152B (en) * | 2019-05-23 | 2024-05-03 | 法玛通股份有限公司 | System and method for removing irradiation targets from nuclear reactor and radionuclide generation systems |
| WO2021138806A1 (en) * | 2020-01-07 | 2021-07-15 | 中广核研究院有限公司 | Safety system for handling severe accident of nuclear power plant and control method therefor |
| GB2606803A (en) * | 2020-01-07 | 2022-11-23 | China Nuclear Power Technology Res Inst Co Ltd | Safety system for handling severe accident of nuclear power plant and control method therefor |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2994321A1 (en) | 2014-02-07 |
| KR20140018670A (en) | 2014-02-13 |
| KR101373676B1 (en) | 2014-03-13 |
| FR2994321B1 (en) | 2017-08-11 |
| CN103578581B (en) | 2016-05-18 |
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