CN114220568A - Passive and active spent fuel pool air cooling system - Google Patents
Passive and active spent fuel pool air cooling system Download PDFInfo
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- CN114220568A CN114220568A CN202111287798.9A CN202111287798A CN114220568A CN 114220568 A CN114220568 A CN 114220568A CN 202111287798 A CN202111287798 A CN 202111287798A CN 114220568 A CN114220568 A CN 114220568A
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- spent fuel
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- 239000002915 spent fuel radioactive waste Substances 0.000 title claims abstract description 120
- 238000001816 cooling Methods 0.000 title claims abstract description 102
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 50
- 239000000446 fuel Substances 0.000 claims abstract description 44
- 238000007599 discharging Methods 0.000 claims abstract description 23
- 230000007774 longterm Effects 0.000 claims abstract description 23
- 238000005507 spraying Methods 0.000 claims abstract description 14
- 230000002708 enhancing effect Effects 0.000 claims abstract description 4
- 230000000712 assembly Effects 0.000 claims description 15
- 238000000429 assembly Methods 0.000 claims description 15
- 239000007921 spray Substances 0.000 claims description 9
- 239000007788 liquid Substances 0.000 claims description 7
- 230000002159 abnormal effect Effects 0.000 claims description 5
- 239000002826 coolant Substances 0.000 description 3
- 230000001502 supplementing effect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000003758 nuclear fuel Substances 0.000 description 2
- 241000321453 Paranthias colonus Species 0.000 description 1
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 238000005253 cladding Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000004992 fission Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 230000002285 radioactive effect Effects 0.000 description 1
- 229910052726 zirconium Inorganic materials 0.000 description 1
Images
Classifications
-
- 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
-
- 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
-
- 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
- G21C15/04—Arrangements or disposition of passages in which heat is transferred to the coolant; Coolant flow control devices from fissile or breeder material
- G21C15/06—Arrangements or disposition of passages in which heat is transferred to the coolant; Coolant flow control devices from fissile or breeder material in fuel elements
-
- 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
- G21C15/182—Emergency cooling arrangements; Removing shut-down heat comprising powered means, e.g. pumps
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C19/00—Arrangements for treating, for handling, or for facilitating the handling of, fuel or other materials which are used within the reactor, e.g. within its pressure vessel
- G21C19/02—Details of handling arrangements
- G21C19/06—Magazines for holding fuel elements or control elements
- G21C19/07—Storage racks; Storage pools
-
- 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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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- General Engineering & Computer Science (AREA)
- High Energy & Nuclear Physics (AREA)
- Structure Of Emergency Protection For Nuclear Reactors (AREA)
Abstract
The invention relates to a passive and active air cooling system of a spent fuel pool, belonging to the technical field of nuclear safety, wherein the system comprises a spent fuel storage pool arranged in a fuel plant, and the interior of the spent fuel storage pool is divided into a short-term spent fuel discharging storage area and a long-term spent fuel discharging storage area; an air cooling channel is arranged outside the fuel plant, and a circulating fan for enhancing air flow is arranged in the air cooling channel; the system also comprises a pool water cooling system and an air cooling system, wherein each cooling system comprises a heat exchanger positioned in the fuel plant and an air radiator positioned in an air cooling channel outside the fuel plant. The invention can ensure the spent fuel assembly to be cooled under normal and accident working conditions, ensure the spent fuel assembly to be cooled at low power level through air cooling under extreme accident working conditions (pool bottom break), and ensure the spent fuel assembly to be cooled at high power level through local spraying.
Description
Technical Field
The invention belongs to the technical field of nuclear safety, and particularly relates to a passive and active air cooling system of a spent fuel pool.
Background
The spent fuel pool of the nuclear power station is used for storing new fuel before the reactor and spent fuel discharged from the reactor core, and subsequent operation is carried out after decay heat and radioactivity of the spent fuel are reduced to a certain level. Because the spent fuel contains highly radioactive fission products while still having a large amount of fissionable material and continuously producing decay heat, the spent pool performs three main functions: cooling the fuel assembly to prevent excessive temperature thereof due to decay heat; shielding the radioactivity of spent fuel in the pool and protecting operators and the public from the irradiation risk; preventing critical accidents.
As early as 1974, the american atomic energy commission proposed a well-known "nuclear power plant risk report" (WASH-1400) without precedent of nuclear power plant accidents, which indicated that the safety risk of fuel assemblies being stored in the spent pool was much less than it was in the reactor, and that the spent pool was considered to have a complete loss of coolant accident and a very low probability of complete exposure of the fuel assemblies to air. Subsequently, related research is carried out on the U.S. nuclear pipe, and all reports suggest that although complete loss of coolant accidents may cause serious consequences such as bare spent fuel, fire on zirconium cladding and the like, early experts consider that the accidents have low probability, and do not consider taking corresponding measures even if the storage density of a spent pool is increased and the fuel consumption of components is increased. After the 911 terrorist attack event occurred in 2001, the complete loss of coolant accident of the spent pool is gradually emphasized, and the related institutions pay attention to the safety risk of the spent pool and also begin to consider the small-probability serious accident possibly caused by the security risk.
In 2011, in 3 months, the fukushima accident happens, people realize that more attention needs to be paid to the design and safety analysis of the dead pool, and research institutions and scholars in various countries begin to carry out more comprehensive research on the dead pool. The national laboratory of sandia, japan jnes (japan Nuclear Energy Safety organization) and the like analyze accidents in which the spent pool is gradually evaporated to dryness and exposed after losing cooling and accidents in which spent fuel is rapidly exposed in the air due to the rupture of the pool. For the accident of quick exposure to air, the analysis shows that if the decay thermal power of the component is small, the component can be cooled by the natural circulation of air. The AP1000 is provided with a spraying system for supplementing water after the spent pool accident and cooling the spent fuel assembly in the pool bottom break accident. The AP1000 spent pool is designed to store spent fuel assemblies discharged in 15-year operation, and is added with the whole reactor core fuel assembly discharged in the last accident, and the required spray flow rate of 21m is considered when decay heat is brought out3Around/h, where most of the heat comes from the decay heat of the entire core just discharged. However, to meet the cooling requirements for the hottest components, the AP1000 is designed with two sets of nozzles, with a single set of nozzles reaching 91m3H is used as the reference value. Therefore, the AP1000 design has low utilization efficiency of spray water and large water demand, which is not favorable for long-term maintenance of spray cooling.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention aims to provide a passive and active air cooling system for a spent fuel pool, which can ensure the cooling of a spent fuel assembly under normal and accident working conditions and ensure the cooling of a high-power horizontal spent fuel assembly through local spraying under an extreme accident working condition (pool bottom opening).
In order to achieve the above purposes, the invention adopts the technical scheme that:
a passive and active air cooling system of a spent fuel pool comprises a spent fuel storage pool arranged in a fuel plant, wherein the interior of the spent fuel storage pool is divided into a short-term spent fuel discharging storage area and a long-term spent fuel discharging storage area;
the air cooling channel is arranged outside the fuel plant and is internally provided with a circulating fan for enhancing air flow;
the pool water cooling system comprises a first heat exchanger positioned below the liquid level of a spent fuel storage pool in the fuel plant during normal storage and a first air radiator positioned in the air cooling channel outside the fuel plant;
and the air cooling system comprises a second heat exchanger positioned at the upper part in the fuel plant and a second air radiator positioned outside the fuel plant in the air cooling channel.
Further, the lowest position of the air inlet of the air cooling channel is higher than the liquid level of a spent fuel pool in the fuel plant, so that water leaked into the air channel from the spent fuel pool due to any reason can not be lost from the air inlet.
Further, according to the passive and active air cooling system for the spent fuel pool, a spraying device is further arranged at the upper part of the short-term spent fuel discharging storage area and is used for spraying the short-term spent fuel discharging area.
Further, according to the passive and active air cooling system for the spent fuel pool, the short-term discharging spent fuel storage area is used for storing the short-term discharging spent fuel assemblies with high decay power levels, and the long-term discharging spent fuel storage area is used for storing the long-term discharging spent fuel assemblies with low decay power levels.
Further, according to the passive and active air cooling system for the spent fuel pool, the spent fuel storage pool is cooled through the pool water cooling system under the normal working condition or in the event of a break accident at the bottom of the spent fuel pool.
Further, according to the passive and active spent fuel pool air cooling system, under the normal material changing working condition or when the abnormal air temperature of the external meteorological environment exceeds the limit value, the cooling capacity of the pool water cooling system is enhanced by starting the circulating fan.
Further, according to the passive and active air cooling system for the spent fuel pool, when equipment failure and extreme weather external conditions are superposed to cause the pool water cooling system not to maintain the spent fuel storage pool within a limited temperature range for a long time, hot air is cooled and condensed by the air cooling system to obtain condensed water, and the condensed water is collected and re-injected into the spent fuel storage pool through a pipeline, so that the long-term water capacity of the spent fuel storage pool is maintained.
Further, according to the passive and active air cooling system for the spent fuel pool, when abnormal working conditions cause the first heat exchanger or the spent fuel assembly to expose out of the liquid surface, the pool water cooling system, the air cooling system and the spraying device are used for cooling the short-term discharged spent fuel storage area and the long-term discharged spent fuel storage area, so that the safety of the fuel assemblies in the short-term discharged spent fuel storage area and the long-term discharged spent fuel storage area is ensured.
The passive and active spent fuel pool air cooling system has the following remarkable technical effects:
(1) the storage area distinguishes the spent fuel assemblies for short-term unloading and long-term unloading, and is beneficial to adopting different countermeasures according to different power levels;
(2) the spent fuel assemblies with high power level and short-term unloading are stored in a centralized manner, and a spraying water supplementing measure is adopted, so that the normal drying condition and the special pool bottom opening condition can be met; and the total amount of short-term discharged fuel is less, the required spraying water amount is very small, and the requirement on a water source is greatly reduced.
(3) The spent fuel assembly for long-term discharge adopts air cooling, and has infinite sustainability in theory.
Drawings
FIG. 1 is a schematic layout diagram of a passive and active air cooling system for a spent fuel pool according to an embodiment of the present invention;
wherein, 1-fuel factory building; 2-short-term discharge of spent fuel storage area; 3-discharging the spent fuel storage area for a long time; 4-air cooling channels; 5-a pool water cooling system; 6-air cooling system; 7-a circulating fan; 8-an air inlet; 9-air baffle plate; 10-spraying device.
Detailed Description
The invention is further described with reference to specific embodiments and drawings attached to the description.
Fig. 1 shows a layout schematic diagram of a passive and active air cooling system of a spent fuel pool provided by the invention, the system comprises a spent fuel storage pool arranged in an out-of-containment fuel factory 1, the inside of the spent fuel storage pool is divided into a short-term discharged spent fuel storage area 2 and a long-term discharged spent fuel storage area 3, the short-term discharged spent fuel storage area 2 is used for storing a short-term discharged spent fuel assembly with a high decay power level, and the long-term discharged spent fuel storage area 3 is used for storing a long-term discharged spent fuel assembly with a low decay power level.
An air cooling channel 4 is arranged outside the fuel plant 1, the air cooling channel 4 comprises an air inlet 8 and an air baffle plate 9, the lowest position of the air inlet 8 is higher than the water level of a fuel water pool in the fuel plant 1, and a circulating fan 7 for enhancing air flow is arranged in the air cooling channel 4.
The passive and active spent fuel pool air cooling system is provided with two sets of cooling systems, namely a pool water cooling system 5 and an air cooling system 6, wherein each set of cooling system comprises a heat exchanger positioned in the fuel plant 1 and an air radiator positioned in an air cooling channel 4 outside the fuel plant 1; wherein the heat exchanger of the pool water cooling system 5 is positioned below the liquid level of the spent fuel storage pool during normal storage and is used for cooling the spent pool under normal working conditions and non-breach accidents; the heat exchanger of the air cooling system 6 is located in the gas space in the upper part of the fuel plant for cooling the air. The two air radiators share the same air cooling channel 4, and heat is removed by the flow of air around the radiators.
The upper part of the short-term spent fuel discharging storage area 2 is also provided with a spraying device 10 which is used for spraying the short-term spent fuel discharging area 2 with higher decay power level under extreme working conditions, so that the safety of the fuel assembly of the short-term spent fuel discharging area 2 is ensured.
The specific working mode of the passive and active spent fuel pool air cooling system is as follows:
the passive and active cooling modes share the same cooling circulation system, and spent fuel is removed by air to generate heat. The active cooling operation is adopted, the speed of the air flow channel is improved mainly by opening the circulating fan 7 in the air cooling flow channel 4, the air heat exchange efficiency is increased, the thermal energy is taken, the greater power requirement in the active operation is met, and the expected temperature of the spent pool water can be ensured.
The pool water cooling system 5 takes away the decay heat of the spent fuel in the spent pool by means of a heat exchanger located in the spent pool and an air radiator outside the fuel plant. When the decay power level of the spent fuel in the spent pool is low, if the spent fuel is discharged normally for a period of time, the decay heat can be taken away by means of natural circulation of air in an air flow channel outside the fuel plant, and water in the spent pool is controlled within a temperature range allowed by normal operation.
Under the refueling working condition, more spent fuel which is just unloaded from the reactor core is stored in the spent pool, and when the total decay power level of the spent pool is higher or the abnormal air temperature of the external meteorological environment is higher, the circulation fan 7 in the air flow channel is started to strengthen the air flow in the air flow channel, so that the water in the spent pool can be maintained within the normal operation limit value. If the circulation fan 7 is stopped, the water temperature of the spent pool can still be maintained within the accident temperature limit value for a long time by means of natural circulation of air as an accident working condition.
During normal storage, if a lower pool water cooling system 5 in a row fails, extreme weather external conditions are superposed; or the circulation fan 7 is invalid and is superposed with extreme meteorological external conditions under the working condition of refueling, the pool water cooling system 5 at the lower part can not maintain the spent pool at a lower temperature for a long time, the temperature of the water in the spent pool is gradually increased, the surface evaporation of the spent pool is obvious, when the spent pool is heated to reach the saturation temperature and starts to boil, the temperature and the humidity of the upper space of the fuel plant are obviously increased, the air in the fuel plant can be cooled by the air cooling system 6 arranged at the upper part of the fuel plant, the water vapor contained in the air is condensed, the condensed water is collected and is re-injected into the spent pool through a pipeline, and therefore the long-term water loading of the spent pool is maintained.
Leading to the decline of exhaustion pond water level, thereby the lower part exhaustion pond heat exchanger exposes and reduces cooling efficiency, and exhaustion pond cooling is not enough to further lead to exhaustion pond water temperature to rise when boiling, relies on air cooling system 6 on upper portion in the fuel factory building, combines the pond water cooling system 5 of lower part, can take away decay heat. Under extreme working conditions, when the spent fuel assembly is exposed, the spray device 10 sprays the short-term spent fuel discharging area 2 with higher power level, so that the safety of the fuel assembly discharging the spent fuel area 2 in a short term can be ensured; the long-term discharge of the spent fuel region 3 can be cooled by air. According to the 18-month refueling consideration, only about 200 groups of spent fuel assemblies of 3 discharging batches are stored in a short period, the required spray water amount is about 1/5 of AP1000, and the water source requirement is greatly reduced.
According to the passive and active air cooling system for the spent fuel pool, the storage area distinguishes the spent fuel assemblies for short-term unloading and long-term unloading, and different countermeasures can be adopted according to different power levels. If under normal storage and accident condition, can guarantee the cooling of spent nuclear reactor and spent fuel through passive cooling system, adopt the supplementary cooling of active facility in order to guarantee the temperature of spent nuclear reactor water in suitable temperature range in the operating mode of unloading in short period, through local spray measure and air cooling system under the extreme condition, can guarantee the integrality of spent fuel subassembly.
The spent fuel assemblies with high power level and short-term unloading are stored in a centralized manner, and a spraying water supplementing measure is adopted, so that the normal drying condition and the special pool bottom opening condition can be met; and the total amount of short-term discharged fuel is less, the required spraying water amount is very small, and the requirement on a water source is greatly reduced.
The spent fuel assembly for long-term discharge adopts air cooling, and has infinite sustainability in theory.
The above-described embodiments are merely illustrative of the present invention, which may be embodied in other specific forms or in other specific forms without departing from the spirit or essential characteristics thereof. The described embodiments are, therefore, to be considered in all respects as illustrative and not restrictive. The scope of the invention should be indicated by the appended claims, and any changes that are equivalent to the intent and scope of the claims should be construed to be included therein.
Claims (8)
1. A passive and active air cooling system of a spent fuel pool is characterized by comprising a spent fuel storage pool arranged in a fuel plant (1), wherein the interior of the spent fuel storage pool is divided into a short-term spent fuel discharging storage area (2) and a long-term spent fuel discharging storage area (3);
the air cooling channel (4) is arranged outside the fuel plant (1) and comprises an air inlet (8) and an air baffle plate (9), and a circulating fan (7) for enhancing air flow is arranged in the air cooling channel (4);
the pool water cooling system (5) comprises a first heat exchanger positioned below the liquid level of a spent fuel storage pool in the fuel plant (1) during normal storage and a first air radiator positioned outside the fuel plant (1) in the air cooling channel (4);
an air cooling system (6), the air cooling system (6) comprises a second heat exchanger positioned in the upper space in the fuel plant (1) and a second air radiator positioned outside the fuel plant (1) and in the air cooling channel (4).
2. The passive and active air cooling system for a spent fuel pool according to claim 1, wherein a spray device (10) is further provided at the upper part of the short-term discharged spent fuel storage area (2) for spraying the short-term discharged spent fuel area (2).
3. The passive and active pool air cooling system of spent fuel according to claim 2, wherein the short term discharge spent fuel storage area (2) is used to store short term discharge spent fuel assemblies of high decay power level and the long term discharge spent fuel storage area (3) is used to store long term discharge spent fuel assemblies of low decay power level.
4. The passive and active air cooling system for a spent fuel pool according to claim 3, wherein the spent fuel storage pool is cooled by the pool water cooling system (5) under normal conditions or in the event of a break in the pool bottom.
5. The air cooling channel inlet (8) according to claim 1, characterized in that the lowest position of the inlet (8) is higher than the liquid level of the spent fuel pool in the fuel plant (1) to ensure that water leaking into the air channel (4) from the spent fuel pool for any reason is not lost from the inlet (8).
6. The passive and active spent fuel pool air cooling system according to claim 3, wherein the cooling capacity of the pool water cooling system (5) is enhanced by turning on the circulation fan (7) under normal refueling conditions or when the outside weather ambient abnormal air temperature exceeds a limit value.
7. The passive and active air cooling system for a spent fuel pool according to claim 2, wherein when the pool water cooling system (5) cannot maintain the spent fuel storage pool within a limited temperature range for a long time due to the occurrence of equipment failure superimposed with extreme weather external conditions, the hot air is cooled and condensed by the air cooling system (6) to obtain condensed water, and the condensed water is collected and re-injected into the spent fuel storage pool through a pipeline, thereby maintaining the long-term water capacity of the spent fuel storage pool.
8. The passive and active spent fuel pool air cooling system according to claim 2, wherein when abnormal conditions occur to cause the first heat exchanger or spent fuel assemblies to expose out of liquid, the short-term spent fuel discharging storage area (2) and the long-term spent fuel discharging storage area (3) are cooled by the combined action of the pool water cooling system (5), the air cooling system (6) and the spray device (10), and the fuel assemblies of the short-term spent fuel discharging area (2) and the long-term spent fuel discharging storage area (3) are ensured to be safe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111287798.9A CN114220568A (en) | 2021-11-02 | 2021-11-02 | Passive and active spent fuel pool air cooling system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111287798.9A CN114220568A (en) | 2021-11-02 | 2021-11-02 | Passive and active spent fuel pool air cooling system |
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| Publication Number | Publication Date |
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| CN114220568A true CN114220568A (en) | 2022-03-22 |
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| CN202111287798.9A Pending CN114220568A (en) | 2021-11-02 | 2021-11-02 | Passive and active spent fuel pool air cooling system |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06294891A (en) * | 1993-04-09 | 1994-10-21 | Ishikawajima Harima Heavy Ind Co Ltd | Storage facility for spent fuel |
| JP2014035195A (en) * | 2012-08-07 | 2014-02-24 | Toshiba Corp | Used fuel pool cooling system and used fuel pool cooling method |
| CN104575633A (en) * | 2013-10-12 | 2015-04-29 | 中科华核电技术研究院有限公司 | Passive water replenishment and heat export system for spent fuel pool |
| US20160055927A1 (en) * | 2014-08-19 | 2016-02-25 | Nuscale Power, Llc | Spent fuel storage rack |
| CN205177415U (en) * | 2015-11-06 | 2016-04-20 | 中广核工程有限公司 | Active heat pipe cooling system of spent fuel pool of nuclear power plant non - |
| CN113140334A (en) * | 2021-03-19 | 2021-07-20 | 中国核电工程有限公司 | Final heat trap system for active and passive cooperative cooling of nuclear power station |
-
2021
- 2021-11-02 CN CN202111287798.9A patent/CN114220568A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06294891A (en) * | 1993-04-09 | 1994-10-21 | Ishikawajima Harima Heavy Ind Co Ltd | Storage facility for spent fuel |
| JP2014035195A (en) * | 2012-08-07 | 2014-02-24 | Toshiba Corp | Used fuel pool cooling system and used fuel pool cooling method |
| CN104575633A (en) * | 2013-10-12 | 2015-04-29 | 中科华核电技术研究院有限公司 | Passive water replenishment and heat export system for spent fuel pool |
| US20160055927A1 (en) * | 2014-08-19 | 2016-02-25 | Nuscale Power, Llc | Spent fuel storage rack |
| CN205177415U (en) * | 2015-11-06 | 2016-04-20 | 中广核工程有限公司 | Active heat pipe cooling system of spent fuel pool of nuclear power plant non - |
| CN113140334A (en) * | 2021-03-19 | 2021-07-20 | 中国核电工程有限公司 | Final heat trap system for active and passive cooperative cooling of nuclear power station |
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