CN205541972U - Rating of merit system of zircaloy fuel cladding integrality for nuclear power station under LOCA operating mode - Google Patents
Rating of merit system of zircaloy fuel cladding integrality for nuclear power station under LOCA operating mode Download PDFInfo
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- CN205541972U CN205541972U CN201620301587.4U CN201620301587U CN205541972U CN 205541972 U CN205541972 U CN 205541972U CN 201620301587 U CN201620301587 U CN 201620301587U CN 205541972 U CN205541972 U CN 205541972U
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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
The utility model relates to a rating of merit system of zircaloy fuel cladding integrality for nuclear power station under LOCA operating mode, it includes reaction unit, the working gas distribution system, the mist feeding mechanism, vapour gas separator, hydrogen analysis appearance, the shrend system, pressure measurement device and vacuum system, reaction unit includes the sample room, a heating electrode for being directed at the involucrum heats, a temperature measuring device for measuring involucrum inner wall and the outer surface temperature, the sample room includes the quartz capsule, upper end cover and bottom end cover, the mist intake pipe, the blast pipe, the working gas distribution system includes that interior storage has a gas tank of helium, interior storage to have the 2nd gas tank of argon gas. The utility model discloses both can appraise the reactor desiccation, back reaction in -pile water injection behind ann's notes system start -up, the hydrogen volume of releasing can also be measured, for providing the equipment support in the zircaloy R&D process among the out -pile rating of merit to involucrum integrality after quenching to the involucrum among zircaloy involucrum and the high -temperature steam reaction sequence.
Description
Technical field
This utility model relate to a kind of for used in nuclear power station zircaloy fuel can in LOCA(reactor loss of-coolant accident (LOCA)) Performance Appraisal System of integrity under operating mode.
Background technology
Metal zirconium is at high temperature reacted with involucrum, and cladding materials is oxidized, forms the zirconium oxide of black non-plastic, and releases a certain amount of hydrogen, and the hydrogen a large amount of gathering in containment can constitute significant threat to the safety of containment.Under reactor loss of-coolant accident (LOCA) operating mode, cladding materials surface temperature quickly raises, even up to the fusing point of fuel pellet, owing to the oxidation-resistance property of zircaloy is the most weak, causes involucrum fast erosion, causes plasticity quickly to reduce, serious threat safety.
Summary of the invention
Technical problem to be solved in the utility model is to provide the Performance Appraisal System of used in nuclear power station zircaloy fuel can integrity under LOCA operating mode.
For solving above-mentioned technical problem, this utility model adopts the following technical scheme that:
nullThe Performance Appraisal System of used in nuclear power station zircaloy fuel can integrity under LOCA operating mode，It includes reaction unit、Working gas distribution system、Mixed gas feeding mechanism、Vapour gas separating device、Hydrogen analyser、Water quenching system、Pressure tester and vacuum system，Wherein，Described reaction unit is used for evaluating involucrum corrosive nature in high-temperature steam，This reaction unit includes the sample room for the space providing high-temperature water vapor and involucrum to react、Thermode is added for what involucrum was heated、For measuring the temperature measuring equipment of involucrum inwall and outside wall temperature，Described sample room includes quartz ampoule、It is sealingly disposed in upper end cover and the bottom end cover of described quartz ampoule upper and lower end respectively、The mixed gas air inlet pipe being connected on described bottom end cover and be connected with described quartz ampoule、It is connected to the exhaustor being connected on described upper end cover and with described quartz ampoule；
Described working gas distribution system includes that internal memory contains the first gas tank of helium, internal memory contains the second gas tank of high-purity argon gas and for inside with described involucrum is connected respectively by described first gas tank, the second gas tank pipeline；
Described mixed gas feeding mechanism is for providing high-temperature water vapor in described quartz ampoule, and described mixed gas includes at high temperature reacting with involucrum and discharging water vapour and the carrier gas argon of hydrogen；
Described vapour gas separating device is connected with exhaustor, for being separated with other gas by the steam in the mixed gas discharged from exhaustor；
Described hydrogen analyser is connected for detecting hydrogen content with described vapour gas separating device；
Described water quenching system is for quenching to involucrum；Described pressure tester is pressure change in measuring involucrum in real time.
Further, described heating electrode includes sealing respectively and is fixed on described upper end cover and described bottom end cover and fire end portion is positioned at the first tungsten electrode within described involucrum and the second tungsten electrode, at described first tungsten electrode, is provided with makes the first tungsten electrode, the upper and lower insulation sleeve of insulation between the second tungsten electrode and the inwall of involucrum respectively between described second tungsten electrode and described involucrum.
Further, described temperature measuring equipment includes the first thermocouple for measuring described involucrum inner wall temperature, the second thermocouple of vapor (steam) temperature and reception store described first thermocouple and the grapher of measurement result that the second thermocouple sends in measuring described involucrum outer wall and described sample room.Preferably, described temperature measuring equipment also includes vapor (steam) temperature, the infrared pyrometer of involucrum outside wall temperature in measuring described sample room.So, the temperature that the involucrum outside wall temperature that can be recorded by this infrared pyrometer and the second thermocouple record mutually verifies.Specifically, heat-insulation layer offers the installing hole for installation infrared pyrometer.Infrared pyrometer is arranged on the sidewall of sample room.
Further, described sample room also includes the heat-insulation layer being arranged on described quartz ampoule periphery, the copper pipe being arranged between described quartz ampoule and heat-insulation layer.The copper pipe set in quartz ampoule periphery can with mock-up reactor inner rim fuel element on the heat effect of research involucrum and impact on involucrum corrosion behavior.Preferably, the material of described heat-insulation layer is asbestos or zirconium oxide.
According to a specific aspect of the present utility model, described mixed gas feeding mechanism includes that water tank and described water tank contain the 3rd gas tank of argon by the steam generator of pipeline communication, internal memory, storage has argon and the 4th gas tank of mixed gas of oxygen, gas superheater, after the steam of steam generator generation mixes with the gas from the 3rd gas tank or the 4th gas tank, after gas superheater heats, enter in described quartz ampoule from described mixed gas air inlet pipe.
According to a specific aspect, described water quenching system includes the quenching pipeline that connect internal with described water tank and described quartz ampoule.
Further, described sample room also includes the rustless steel water collar being arranged on described heat-insulation layer periphery.
Preferably, described reaction unit also includes the Negative pressure prevention system being arranged on outside described sample room.
Preferably, described sample room is provided with relief valve, after sample room pressure exceedes safety value, relief valve open, prevent sample room from exploding.
According to this utility model, described vapour gas separating device is the device that can be separated with water vapour by gas.Preferably, this vapour gas separating device is the device that can water vapour, hydrogen and argon three be concurrently separated, and i.e. after this device, will directly obtain not containing water vapor and the hydrogen of argon, consequently facilitating next step directly content to hydrogen carry out detection and analyze.Hydrogen after separating through vapour gas separating device, being dried through desiccant, it is preferred for entering back into hydrogen analyser.Hydrogen analyser can select such as Caldos analyser.
Further, described system is also configured with data acquisition, logger computer etc. with information such as record diverse location vapor (steam) temperature, pressure, times automatically.
Due to the enforcement of above technical scheme, this utility model compared with prior art has the advantage that
This system both can evaluation response heap dehydration, safety injection system starts water filling in backward reactor, clad integrity after involucrum is quenched, it is also possible to measure zirconium alloy cladding and the amounts of hydrogen of release in high-temperature steam course of reaction, equipment support is provided in evaluating for out-of-pile performances in zircaloy R&D process.
Accompanying drawing explanation
The utility model is described in more detail with specific embodiment below in conjunction with the accompanying drawings.
Fig. 1 is the schematic diagram according to Performance Appraisal System of the present utility model；
Fig. 2 is the cross-sectional schematic of reaction unit in Fig. 1；
Wherein: 1, working gas distribution system；2, copper pipe；3, mixed gas preheater；4,5,6, mass flowmenter；7, steam generator；9, gas superheater；11, gas pipeline；12, water tank；13, thermode is added；15, upper end cover；16, bottom end cover；17, insulation sleeve；18, rustless steel water collar；19, quartz ampoule；20, water quenching system；21, vapour gas separating device；22, heat-insulation layer；23, involucrum；
26, the first thermocouple；27, Negative pressure prevention system；28, vacuum system；29, gas componant and content analysis system；32, mixed gas air inlet pipe；33, exhaustor；34, the first gas tank；35, the second gas tank；36, the 3rd gas tank；37, the 4th gas tank.
Detailed description of the invention
As illustrated in fig. 1 and 2, this example provides the Performance Appraisal System of used in nuclear power station zircaloy fuel can integrity under LOCA operating mode, and it mainly includes reaction unit, working gas distribution system 1, mixed gas feeding mechanism, vapour gas separating device 21, gas componant and content analysis system 29(hydrogen analyser), water quenching system 20, pressure tester and vacuum system 28.
Reaction unit is used for evaluating involucrum 23 corrosive nature in high-temperature steam, this reaction unit includes the sample room for providing high-temperature water vapor and the space of involucrum 23 reaction, thermode 13 is added for what involucrum 23 was heated, for measuring the temperature measuring equipment of involucrum 23 inwall and outside wall temperature, described sample room includes quartz ampoule 19, it is sealingly disposed in upper end cover 15 and the bottom end cover 16 of described quartz ampoule 19 upper and lower end respectively, it is connected to the mixed gas air inlet pipe 32 being connected on described bottom end cover 16 and with described quartz ampoule 19, it is connected to the exhaustor 33 being connected on described upper end cover 15 and with described quartz ampoule 19.Further, described heating electrode includes sealing respectively and is fixed on described upper end cover 15 and bottom end cover 16 and fire end portion is positioned at the first tungsten electrode within involucrum 23 and the second tungsten electrode, at described first tungsten electrode, is provided with makes the first tungsten electrode, the upper and lower insulation sleeve 17 of insulation between the second tungsten electrode and the inwall of involucrum respectively between described second tungsten electrode and described involucrum.
Further, described temperature measuring equipment includes for measuring the first thermocouple of described involucrum 23 inner wall temperature, the second thermocouple of vapor (steam) temperature and reception store described first thermocouple and the grapher (not shown) of measurement result that the second thermocouple sends in measuring described involucrum 23 outer wall and described sample room.Preferably, described temperature measuring equipment also includes the infrared pyrometer (not shown) of vapor (steam) temperature, involucrum outside wall temperature in measuring described sample room.So, the temperature that the involucrum outside wall temperature that can be recorded by this infrared pyrometer and the second thermocouple record mutually verifies.Specifically, heat-insulation layer offers the installing hole for installation infrared pyrometer.Infrared pyrometer is arranged on the sidewall of sample room.Further, described sample room also includes the heat-insulation layer 22 being arranged on described quartz ampoule 19 periphery, the copper pipe 2 being arranged between described quartz ampoule 19 and heat-insulation layer 22.The copper pipe 2 set in quartz ampoule 19 periphery can with mock-up reactor inner rim fuel element on the heat effect of research involucrum and impact on involucrum corrosion behavior.Preferably, the material of described heat-insulation layer 22 is asbestos or zirconium oxide.Further, described sample room also includes the rustless steel water collar 18 being arranged on described heat-insulation layer 22 periphery.Additionally, sample room is provided with relief valve, after sample room pressure exceedes safety value, relief valve open, prevent sample room from exploding.Described reaction unit also includes the Negative pressure prevention system 27 being arranged on outside described sample room.
Described working gas distribution system 1 includes that internal memory contains the first gas tank 34 of helium, internal memory contains the second gas tank 35 of high-purity argon gas and for inside with described involucrum 23 is connected respectively by first gas tank the 34, second gas tank 35 pipeline；
Described mixed gas feeding mechanism is for providing high-temperature water vapor in quartz ampoule 19, and described mixed gas includes at high temperature reacting with involucrum and discharging water vapour and the carrier gas argon of hydrogen；Described mixed gas feeding mechanism specifically includes that water tank 12 and described water tank 12 contain the 3rd gas tank 36 of argon by the steam generator 7 of pipeline communication, internal memory, storage has argon and the 4th gas tank 37 of mixed gas of oxygen, gas superheater 9, after the steam of steam generator 7 generation mixes with the gas (argon) from the 3rd gas tank 36 or the 4th gas tank 37, after gas superheater 7 heats, enter in quartz ampoule 19 from described mixed gas air inlet pipe 32.
Described vapour gas separating device 21 is connected with exhaustor 33, for being separated with other gas by the steam in the mixed gas discharged from exhaustor 33；This vapour gas separating device is the device that can water vapour, hydrogen and argon three be concurrently separated, and i.e. after this device, will directly obtain not containing water vapor and the hydrogen of argon, consequently facilitating next step directly content to hydrogen carry out detection and analyze.Hydrogen after separating through vapour gas separating device, being dried through desiccant, it is preferred for entering back into hydrogen analyser.Hydrogen analyser can select such as Caldos analyser.
Described gas componant and content analysis system are connected with described vapour gas separating device 23, and wherein hydrogen analyser is used for detecting hydrogen content；
Described water quenching system is for quenching to involucrum, and it includes the quenching pipeline that connect internal with water tank and quartz ampoule；Described pressure tester is pressure change in measuring involucrum in real time, and pressure tester includes the Pressure gauge (not shown) being arranged on involucrum pressure in detecting it.
Further, described system is also configured with data acquisition, logger computer etc. with information such as record diverse location vapor (steam) temperature, pressure, times automatically.
This utility model uses as follows:
High temperature (120 DEG C) steam is produced with steam generator 7, mix according to a certain percentage with the Ar through mass flowmenter 4,5,6 through heat-preserving metal pipe, being then passed through gas superheater 9 makes the temperature of mixed gas raise (about 300 DEG C) further, enter in sample room quartz ampoule 19 finally by the gas pipeline 11 below sample room, by adding thermode 13, involucrum 23 is heated, high-temperature water vapor reacts with high-temperature fuel involucrum 23, generate zirconium oxide at cladding materials outer surface, and discharge hydrogen.Then the mixed gas of steam, hydrogen and argon is discharged from exhaustor 33 by the gas outlet above sample room, and warm pipeline transmits, and enters vapour gas separating device 21.In vapour gas separating device 21, high-temperature vapor condenses through flowing cooling water cooling, and Ar and H2Then being derived by vapour gas separating device 21 top exhaustor, drying agent is dried, enters Caldos analyser and measures the H of zirconium-water reaction release2Amount.Sample room uses metal tungsten bar to do thermal source, and when the power density of design is properly functioning with nuclear power station, fuel original paper is suitable, about 180W/cm.Filling the high pressure argon gas that distributed by working gas distribution system 1 in involucrum 23, and is measured pressure change in involucrum in real time by Pressure gauge 27, if pressure reduces suddenly, illustrate that involucrum generation is damaged, corrosion failure, test system will be automatically stopped heating.The thermocouple that the inside and outside wall of cladding materials is all arranged, is used for measuring the inside and outside wall temperature of involucrum.On sample room heat-insulation layer 22, have observation port, internal corrosion situation in observable sample room in experimentation, the copper pipe 2(copper reflecting layer set in heat-insulation layer 22), for launching the extraradial heat of involucrum heap, the Simulation Core periphery involucrum heat effect to studied involucrum, heat-insulation layer is also equipped with infrared pyrometer, for measuring samples room gas and involucrum outside wall temperature.This device is furnished with vacuum system 28, before experiment starts, can pipeline and the valve of atmosphere such as in steam off pipeline valve, gas superheater 9, sample room, vapour gas separating device 21 and involucrum 23, extract the air of these pipelines out, maximum vacuum is up to 5Pa.It is then shut off vacuum pipe, is passed through high-temperature steam to jet chimney, sample room；The high-purity Ar of 1MPa is filled in involucrum 23.Open low-pressure heating power supply, start sample is heated.When temperature reaches design temperature in involucrum 23, start timing, after arriving oxidization time, close heating power supply.Injecting cooling water by quenching pipeline to sample room, the speed that sample room water level rises is at 2 ~ 5mm/s.Involucrum 23 is quenched.After sample cooling, by the change of involucrum 23 internal links piezometer numerical value, can determine whether whether involucrum 23 lost efficacy in quenching process.Analyzed by Caldos29 measurement result, calculate H in process of the test2Burst size.
Above this utility model is described in detail; its object is to allow the personage being familiar with this art will appreciate that content of the present utility model and to be carried out; protection domain of the present utility model can not be limited with this; all equivalence changes made according to spirit of the present utility model or modification, all should contain in protection domain of the present utility model.
Claims (10)
- null1. the Performance Appraisal System of used in nuclear power station zircaloy fuel can integrity under a LOCA operating mode，It is characterized in that including reaction unit、Working gas distribution system、Mixed gas feeding mechanism、Vapour gas separating device、Hydrogen analyser、Water quenching system、Pressure tester and vacuum system，Wherein，Described reaction unit is used for evaluating involucrum corrosive nature in high-temperature steam，This reaction unit includes the sample room for the space providing high-temperature water vapor and involucrum to react、Thermode is added for what involucrum was heated、For measuring the temperature measuring equipment of involucrum inwall and outside wall temperature，Described sample room includes quartz ampoule、It is sealingly disposed in upper end cover and the bottom end cover of described quartz ampoule upper and lower end respectively、The mixed gas air inlet pipe being connected on described bottom end cover and be connected with described quartz ampoule、It is connected to the exhaustor being connected on described upper end cover and with described quartz ampoule；Described working gas distribution system includes that internal memory contains the first gas tank of helium, internal memory contains the second gas tank of high-purity argon gas and for inside with described involucrum is connected respectively by described first gas tank, the second gas tank pipeline；Described mixed gas feeding mechanism is for providing high-temperature water vapor in described quartz ampoule, and described mixed gas includes at high temperature reacting with involucrum and discharging water vapour and the carrier gas argon of hydrogen；Described vapour gas separating device is connected with described exhaustor, for being separated with other gas by the steam in the mixed gas discharged from exhaustor；Described hydrogen analyser is connected for detecting hydrogen content with described vapour gas separating device；Described water quenching system is for quenching to involucrum；Described pressure tester is pressure change in measuring involucrum in real time.
- The Performance Appraisal System of used in nuclear power station zircaloy fuel can integrity under LOCA operating mode the most according to claim 1, it is characterized in that: described heating electrode includes sealing respectively and is fixed on described upper end cover and described bottom end cover and fire end portion is positioned at the first tungsten electrode within described involucrum and the second tungsten electrode, at described first tungsten electrode, be provided with between described second tungsten electrode and described involucrum and make the first tungsten electrode, the upper and lower insulation sleeve of insulation between the second tungsten electrode and the inwall of involucrum respectively.
- The Performance Appraisal System of used in nuclear power station zircaloy fuel can integrity under LOCA operating mode the most according to claim 1, it is characterised in that: described temperature measuring equipment includes the first thermocouple for measuring described involucrum inner wall temperature, the second thermocouple of vapor (steam) temperature and reception store described first thermocouple and the grapher of measurement result that the second thermocouple sends in measuring described involucrum outer wall and described sample room.
- The Performance Appraisal System of used in nuclear power station zircaloy fuel can integrity under LOCA operating mode the most according to claim 3, it is characterised in that: described temperature measuring equipment also includes vapor (steam) temperature, the infrared pyrometer of involucrum outside wall temperature in measuring described sample room.
- The Performance Appraisal System of used in nuclear power station zircaloy fuel can integrity under LOCA operating mode the most according to claim 1, it is characterised in that: described sample room also includes the heat-insulation layer being arranged on described quartz ampoule periphery, the copper pipe being arranged between described quartz ampoule and heat-insulation layer.
- The Performance Appraisal System of used in nuclear power station zircaloy fuel can integrity under LOCA operating mode the most according to claim 1, it is characterized in that: described mixed gas feeding mechanism includes water tank, with the described water tank steam generator by pipeline communication, internal memory contains the 3rd gas tank of argon, storage has the 4th gas tank of argon and the mixed gas of oxygen, gas superheater, after the steam of steam generator generation mixes with the gas from the 3rd gas tank or the 4th gas tank, after gas superheater heats, enter in described quartz ampoule from described mixed gas air inlet pipe.
- The Performance Appraisal System of used in nuclear power station zircaloy fuel can integrity under LOCA operating mode the most according to claim 6, it is characterised in that: described water quenching system includes the quenching pipeline that connect internal with described water tank and described quartz ampoule.
- The Performance Appraisal System of used in nuclear power station zircaloy fuel can integrity under LOCA operating mode the most according to claim 5, it is characterised in that: described sample room also includes the rustless steel water collar being arranged on described heat-insulation layer periphery.
- The Performance Appraisal System of used in nuclear power station zircaloy fuel can integrity under LOCA operating mode the most according to claim 1, it is characterised in that: described reaction unit also includes the Negative pressure prevention system being arranged on outside described sample room.
- The Performance Appraisal System of used in nuclear power station zircaloy fuel can integrity under LOCA operating mode the most according to claim 1, it is characterised in that: described sample room is provided with relief valve.
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| CN201620301587.4U CN205541972U (en) | 2016-04-12 | 2016-04-12 | Rating of merit system of zircaloy fuel cladding integrality for nuclear power station under LOCA operating mode |
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| CN201620301587.4U CN205541972U (en) | 2016-04-12 | 2016-04-12 | Rating of merit system of zircaloy fuel cladding integrality for nuclear power station under LOCA operating mode |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105761768A (en) * | 2016-04-12 | 2016-07-13 | 苏州热工研究院有限公司 | Performance evaluation system for integrity of zirconium alloy fuel cladding for nuclear power station under LOCA (Loss-Of-Coolant Accident) working condition |
| CN106769822A (en) * | 2017-01-11 | 2017-05-31 | 东南大学 | A kind of high-temperature corrosion testing system |
| CN108051321A (en) * | 2017-12-20 | 2018-05-18 | 广东核电合营有限公司 | A kind of cladding tubes internal pressure explosion bulge test device and its test method |
| CN108182980A (en) * | 2017-11-27 | 2018-06-19 | 中核控制***工程有限公司 | It is a kind of to sob the air-channel system for inhaling detection device online suitable for fuel can |
| CN109065196A (en) * | 2018-07-27 | 2018-12-21 | 中国科学院上海应用物理研究所 | A kind of preparation facilities and preparation method thereof of molten salt reactor liquid fuel |
| CN111489841A (en) * | 2019-01-29 | 2020-08-04 | 国家电投集团科学技术研究院有限公司 | Nuclear reactor fuel failure monitoring system |
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2016
- 2016-04-12 CN CN201620301587.4U patent/CN205541972U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105761768A (en) * | 2016-04-12 | 2016-07-13 | 苏州热工研究院有限公司 | Performance evaluation system for integrity of zirconium alloy fuel cladding for nuclear power station under LOCA (Loss-Of-Coolant Accident) working condition |
| CN105761768B (en) * | 2016-04-12 | 2017-07-25 | 苏州热工研究院有限公司 | The Performance Appraisal System of used in nuclear power station zircaloy fuel can integrality under LOCA operating modes |
| CN106769822A (en) * | 2017-01-11 | 2017-05-31 | 东南大学 | A kind of high-temperature corrosion testing system |
| CN108182980A (en) * | 2017-11-27 | 2018-06-19 | 中核控制***工程有限公司 | It is a kind of to sob the air-channel system for inhaling detection device online suitable for fuel can |
| CN108051321A (en) * | 2017-12-20 | 2018-05-18 | 广东核电合营有限公司 | A kind of cladding tubes internal pressure explosion bulge test device and its test method |
| CN108051321B (en) * | 2017-12-20 | 2023-08-25 | 广东核电合营有限公司 | Internal pressure explosion test device and test method for cladding tube |
| CN109065196A (en) * | 2018-07-27 | 2018-12-21 | 中国科学院上海应用物理研究所 | A kind of preparation facilities and preparation method thereof of molten salt reactor liquid fuel |
| CN111489841A (en) * | 2019-01-29 | 2020-08-04 | 国家电投集团科学技术研究院有限公司 | Nuclear reactor fuel failure monitoring system |
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