CN102142291B - Method and system for displaying monitoring parameters after nuclear power station accident - Google Patents
Method and system for displaying monitoring parameters after nuclear power station accident Download PDFInfo
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- CN102142291B CN102142291B CN2010105462916A CN201010546291A CN102142291B CN 102142291 B CN102142291 B CN 102142291B CN 2010105462916 A CN2010105462916 A CN 2010105462916A CN 201010546291 A CN201010546291 A CN 201010546291A CN 102142291 B CN102142291 B CN 102142291B
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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
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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 invention discloses a method and system for displaying monitoring parameters after a nuclear power station accident. The method for displaying monitoring parameters after the accident mainly comprises the following steps of: collecting the monitoring parameters after the accident; isolating the collected monitoring parameters; and distributing the isolated monitoring parameters to security level and non-security level devices to display. The invention also provides the system for displaying the monitoring parameters after the accident, which comprises the security level and non-security level devices. The diversification of security level and non-security level display of the monitoring parameters after the accident is realized, and other display devices are alternative when one display device fails so as to cause no influence on normal operation; and meanwhile, the physical space is saved by using digitized computer and network technologies.
Description
Technical field
The present invention relates to nuclear plant digital instrument control field, relate in particular to a kind of display packing and system of monitoring parameters after nuclear power station accident.
Background technology
According to the requirement of statutory standard GB/T 13627 and R.G 1.97, nuclear power station must arrange Post Accident Monitoring System (PAMS, i.e. Post Accident Monitoring System).
In the traditional core power station, realize the supervision of post accident monitoring parameter with analog instrument control system, implementation as shown in Figure 1, wherein, the PAMS parameter is parameter after the Post Accident Monitoring System accident of monitoring, deliver to load module 102 through behind the acquisition module 101, outputing to parameter indicating module 104 (conventional indicating gauge) through output module 103 again shows, and output to reference record module 105 (making the paper registering instrument) and carry out record, wherein all parameter processing procedures all adopt safe level hardware to realize, and the processing of parameter all adopts the analog signal processing mode to finish.
In addition, in the above-mentioned traditional analog instrument control system, do not possess self-checking function, must make regular check on by the mode that simulating signal is injected and measure passage and whether work, very loaded down with trivial details.
In sum, traditional analog instrument control system is single to PAMS parameter display and recording mode, lack of diversity; A large amount of conventional equipments that adopt take a large amount of physical spaces, affect master control room of nuclear power station and arrange.
Summary of the invention
The technical problem to be solved in the present invention is single for PAMS parameter display and recording mode in the prior art and the used conventional equipment large defective that takes up room when adopting analogue technique, the display packing of monitored parameter after a kind of accident and diversity and the convenience that system increases PAMS parameter display mode are provided, reduce the use of conventional equipment to save physical space.
The technical solution adopted for the present invention to solve the technical problems is:
The invention provides a kind of display packing of monitoring parameters after nuclear power station accident, may further comprise the steps,
Monitored parameter after A, the collection accident;
The monitored parameter that B, isolation gather;
C, the monitored parameter after will isolating show in safe level and non-security level equipment respectively.
In the display packing of monitoring parameters after nuclear power station accident of the present invention, step C specifically comprises,
C1, the monitored parameter after will isolating are directly distributed to described safety class equipment and are shown;
Monitored parameter carries out digital conversion and processing and exports to described non-security level equipment showing and record after C2, the accident after will isolating.
In the display packing of monitoring parameters after nuclear power station accident of the present invention, step C2 specifically comprises,
The simulating signal of monitored parameter is converted into digital signal after C21, the accident after will isolating;
C22, described digital signal is carried out logical process, relatively judge the accident that gathers after monitored parameter whether mistake appears;
C23, when mistake does not appear in monitored parameter after the accident that gathers, will export to the safe level system bus by network through the digital signal after the logical process;
C24, will show and record for non-security level equipment through the digital data transmission after the logical process by described safe level system bus.
In the display packing of monitoring parameters after nuclear power station accident of the present invention, step C24 specifically comprises,
The digital signal of monitored parameter after the accident that C241, reception and the described safe level system bus of taxonomic revision transmit;
The digital signal of monitored parameter after the accident of C242, non-security level demonstration and record process step C241 taxonomic revision.
In the display packing of monitoring parameters after nuclear power station accident of the present invention, described step C24 also comprises,
The digital signal about monitored parameter after the accident that C243, the described safe level system bus that will receive transmit is passed through safe level gateway, non-security level gateway forwards successively;
Monitored parameter after the accident of non-security level gateway forwards described in C244, non-security level demonstration and the recording step C243.
The present invention has also constructed a kind of display system of monitoring parameters after nuclear power station accident, comprises for the parameter acquisition module that gathers monitored parameter after the accident, also comprises:
Isolation module is for the monitored parameter that gathers being isolated and exporting;
At least two display devices are used for showing through the monitored parameter after the isolation under safe level and non-security level.
In the display system of monitoring parameters after nuclear power station accident of the present invention, described display device comprises:
The back-up disk indicating gauge is used for showing monitored parameter after the accident of described isolation module output under safe level;
Intermediate process module, monitored parameter carries out digital conversion and processing and output after the accident after being used for isolating;
First non-security grade of display device and second non-security grade of display device are respectively applied to monitored parameter after showing through the accident of described intermediate process module output under the non-security level.
In the display system of monitoring parameters after nuclear power station accident of the present invention, described intermediate process module specifically comprises:
Load module be used for to receive the simulating signal of monitored parameter after the accident after the isolation, and described simulating signal is converted into digital signal;
Logic processing module is used for described digital signal is carried out logical process, relatively judge the accident that gathers after monitored parameter whether mistake appears;
The network output module is used for and will exports by network through the digital signal after the logical process.
The safe level system bus, the monitored parameter signal is transferred to the demonstration of described non-security level display device after the accident that is used for described network output module is exported.
In the display system of monitoring parameters after nuclear power station accident of the present invention, described first non-security grade of display device specifically comprises:
Processing module, the monitored parameter signal is processed after the accident that is used for obtaining from described safe level system bus;
Record and display unit are used for showing the signal of processing through described processing module under non-security level.
In the display system of monitoring parameters after nuclear power station accident of the present invention, this system also comprises:
Gateway unit is used for and will be transmitted to described second non-security grade of display device from monitored parameter signal after the accident of described safe level system bus reception;
Wherein, described gateway unit comprises again,
The safe level gateway is for monitored parameter signal after the accident that sends described safe level system bus output;
Non-security level gateway is used for and will be transmitted to described second non-security grade of display device from monitored parameter signal after the described accident of described safe level gateway reception.
The beneficial effect that the present invention produces is: the present invention by safe level and non-security level display device to accident after monitored parameter show, so that the Display Realization of monitored parameter variation after the accident, there have other display equipment to carry out when a display device breaks down therein to be for subsequent use, and do not affect normal operation; The present invention adopts digitized computer and network technologies to save physical space.
Description of drawings
The invention will be further described below in conjunction with drawings and Examples, in the accompanying drawing:
Fig. 1 is the structural representation of traditional PAMS parameter display system;
Fig. 2 is the process flow diagram of monitored parameter display packing after the preferred embodiment accident of the present invention;
Fig. 3 is the theory diagram of monitored parameter display system after the preferred embodiment accident of the present invention.
Embodiment
Preferred embodiment of the present invention provides the display packing of monitored parameter after a kind of accident, mainly may further comprise the steps: the monitored parameter after the collection accident; The monitored parameter that isolation gathers; Monitored parameter after the isolation is shown in safe level and non-security level equipment respectively.
After the preferred embodiment accident of the present invention in the display packing of monitored parameter, as shown in Figure 2, may further comprise the steps further:
Monitored parameter is the PAMS parameter after S101, the collection accident, because the singularity of nuclear power station, a common PAMS parameter is carried out signals collecting by 2～4 measuring sondes, such as a loop hot-side temperature parameter, three loops all are provided with temperature measurement probe, 3 collection signals are so just arranged, and the parameter signal of collection is simulating signal;
S102, the PAMS parameter that gathers is isolated and distribute; Isolation is in case the interference in stop signal source, and distribution is the data after the isolation directly to be sent to the safe level display device show, shows at non-security grade of display device after the data allocations after perhaps will isolate processes for corresponding module;
S103, will show at the back-up disk indicating gauge through the PAMS parameter after the step isolation, in order to guarantee the secure path of PAMS parameter, requirement is gathering, is isolating and the whole safety class equipments that adopt of demonstration, indicating gauge belongs to safe level on the back-up disk and only have in the display device, therefore PAMS parameter digital display will be shown on the back-up disk indicating gauge;
Monitored parameter is that the simulating signal of PAMS parameter all is converted into digital signal after S201, the accident after will isolating;
S202, digital signal is carried out logical process, and compare, thereby whether monitored parameter mistake occurs after judging the accident that gathers; The routine test of traditional analog control mode is very loaded down with trivial details, must come the check measurement passage whether to work by the mode that simulating signal is injected, after adopting digitizing technique, come weighted mean value as adopting the mode relatively of intersecting to calculate one, compare with a value of setting in advance again, show that then the measurement passage is normal if surpass predefined value, otherwise it is undesired to measure passage.Because this work is finished automatically by computing machine, does not need human intervention, has greatly reduced maintenance personal's workload.Hence one can see that by screening the quality position of parameter, can judge whether parameter breaks down, such as faults such as dead electricity, broken string, outranges, and by digitizing technique timely parameter warning reminding operator and maintenance personal;
S203, will export to display device by network through the digital signal after the logical process and show.
Further, in the display packing of monitored parameter, also comprise step after the preferred embodiment accident of the present invention:
S204, by safe level system bus transmission of digital signals;
S205, P-VDU show and the reception of recording unit and the digital signal about monitored parameter after the accident that processing safe level system bus transmits, data after Real-time Collection can being processed are at P-VDU (Recording Visual Display Unit, namely show and recording unit) upper in real time demonstration, history parameters is converted into chart so that directly perceived the demonstration; P-VDU shows and recording unit at most can 180 days historical data of stored record, and the data above 180 days can be stored in CD or other storage mediums by RW system, can directly read in the time of need to calling;
S206, after the accident that P-VDU equipment shows and record is processed through step S205 the digital signal of monitored parameter.
Further, in the display packing of monitored parameter, also comprise step after the preferred embodiment accident of the present invention,
S301, with the safe level system bus that receives transmit about the digital signal of monitored parameter after the accident successively by safe level gateway, non-security level gateway forwards; Because the acquisition and processing of PAMS parameter is all realized at the safe level platform, computerized information and control system are that KIC (Process Information and Control System) is non-safety class equipment, therefore need to forward a signal to KIC equipment by gateway, to reach the effect of data isolation, guarantee the reliability of signal transmission;
S302, the non-security level of KIC equipment show and recording step S301 in monitored parameter after the accident of non-security level gateway forwards.
As shown in Figure 3, Fig. 3 is the structural representation of monitored parameter display system after the preferred embodiment accident of the present invention; Monitored parameter is that the demonstration of PAMS parameter comprises safe level part and non-security grade of part after the accident.For monitored parameter after the assurance accident is the secure path of PAMS parameter, require the PAMS parameter gathering, distribute and show and all adopt safety class equipment, in preferred embodiment of the present invention, the back-up disk indicating gauge belongs to safe level in the display device, therefore the safe level parameter display is on the back-up disk indicating gauge, in addition, the present invention also provides the demonstration of two kinds of non-security levels and the mode of record PAMS parameter, comprise P-VDU (Recording Visual Display Unit namely shows and recording unit) and KIC NC-VDU (Process Information and Control System Non-safety Visual Display Unit is that the non-security level of computerized information and control system shows and recording unit).Because when computing machine is unavailable, demonstration on the back-up disk indicating gauge still can normally show the PAMS parameter in real time, so the indication on the back-up disk indicating gauge is except guaranteeing the safe level path, can also show and record diversity means when unavailable as the non-security level of KIC NC-VDU computerized information and control system, the reliability of monitored parameter after the assurance accident, equally when the back-up disk indicating gauge is unavailable, also can by P-VDU demonstration and recording unit or KIC NC-VDU computerized information and the non-security level of control system shows and recording unit shows.
According to the single failure requirement, in order to guarantee power plant safety, nuclear power station has used A row and the duplex feeding of B row, and after any one tunnel power supply forfeiture, the PAMS parameter function is unaffected.Therefore the PAMS parameter has all been used A row and B row redundant configuration, physically all requires the A/B row separately from parameter acquisition, processing to being presented at, and for same PAMS parameter, whole system shown in Figure 3 all will be carried out the redundancy setting at A row and B row.
Classify example as with A, as shown in Figure 3, the monitored parameter display system comprises after the preferred embodiment accident of the present invention:
Parameter acquisition module 201 is for the collection of monitored parameter after the accident;
Isolation module 202 is for the monitored parameter that gathers being isolated and exporting;
At least two display devices are used for showing through the monitored parameter after the isolation under safe level and non-security level; Specifically comprise safe level display device (being back-up disk indicating gauge 203) and non-security level display device (P-VDU shows and recording unit 300 and KIC NC-VDU computerized information and the non-security level demonstration of control system and recording unit 211), be used for showing real time monitoring parameter after the accident of isolation module output.
Further, as shown in Figure 3, the monitored parameter display system also comprises after the preferred embodiment accident of the present invention:
First non-security grade shows and recording unit, and namely P-VDU shows and recording unit 300, for monitored parameter after the accident of record and the output of demonstration safe level monitoring cabinet; P-VDU shows and recording unit is the equipment that satisfies shockproof requirements.
The second non-security level shows and recording unit, be that the non-security level of KIC NC-VDU computerized information and control system shows and recording unit 211, for monitored parameter after the accident of record and the output of demonstration safe level monitoring cabinet, operator mainly carries out the monitoring of nuclear power station by computerized information and control system (being KIC) under normal circumstances, therefore the PAMS parameter must show and notes down at KIC, to satisfy the Human Engineering requirement, the KIC system adopts non-security level hardware and software.
Further, in the monitored parameter display system, safe level monitoring cabinet 200 is used for monitored parameter after the accident that gathers is processed and exported, and is comprised of isolation module 202 and intermediate process module 230 after the preferred embodiment accident of the present invention; Wherein intermediate process module 230 mainly comprises load module 204, logic processing module 205 and network output module 206.
After the data acquisition through parameter acquisition module 201, the PAMS parameter enters the isolation module 202 of safe level monitoring cabinet 200 isolates, in case the interference in stop signal source distributes the parameter after the isolation, to send to different modules.The PAMS parameter here is analog signals; Analog signals PAMS parameter is through load module 204; analog signals is converted to digital quantity signal; then the processor CPU software section that enters in the logic processing module 205 is processed, if the PAMS parameter is also taken into account protection and control function, then carries out corresponding protection and control.
The digital signal of PAMS parameter is processed through logic processing module 205.Because the singularity of nuclear power station, a common PAMS parameter has 2～4 signals collecting, and such as a loop hot-side temperature parameter, three loops all are provided with temperature measurement probe, and 3 collection signals are so just arranged.The routine test of traditional analog control mode is very loaded down with trivial details, must come the check measurement passage whether to work by the mode that simulating signal is injected, after adopting digitizing technique, come weighted mean value as adopting the mode relatively of intersecting to calculate one, compare with a value of setting in advance again, show that then the measurement passage is normal if surpass predefined value, otherwise it is undesired to measure passage.Because this work is finished automatically by computing machine, does not need human intervention, has greatly reduced maintenance personal's workload.Hence one can see that by screening the quality position of parameter, can judge whether parameter breaks down, such as faults such as dead electricity, broken string, outranges, and by digitizing technique timely parameter warning reminding operator and maintenance personal.
When breaking down, by network output module 206 the PAMS parameter is not transferred to display device.
Further, after the preferred embodiment accident of the present invention in the monitored parameter display system, also comprise safe level system bus 207, processing module is the processing module 208 of P-VDU demonstration and recording unit, and P-VDU shows and recording unit also comprises for the P-VDU demonstration and the logging modle 209 that show and record.Safe level system bus 207 gets access to treated PAMS parameter by network output module 206 and is transferred to next link again.What safe level system bus 207 adopted is non-safe level software, and the processing module 208 of P-VDU can be obtained data from the safe level system bus.The processing module 208 of P-VDU will be processed from the data that safe level system bus 207 obtains, and comprise that data creating with historical record is that the form of chart can intuitively show PAMS parameter historical trend on display module; Also processing module 208 also is used for the picture management to the display module of P-VDU demonstration and recording unit 209.P-VDU shows and then logging modle 209 will show in real time from the PAMS parameter that processing module receives, the logging modle of simultaneously P-VDU demonstration and recording unit 209 is stored the PAMS parameter that receives, at most can 180 days historical data of stored record, the data that surpass 180 days can be stored in CD or other media by RW system, can directly read in the time of need to calling.
The P-VDU part also adopts redundant configuration, and two cover P-VDU are respectively by A row and the power supply of B row, but two cover P-VDU show and the content of record is identical.This design has guaranteed redundancy on the one hand, can guarantee that on the other hand two master-control room operators can use simultaneously.
Because the acquisition and processing of PAMS parameter all realizes that at the safe level platform computerized information and control system are that KIC is non-safety class equipment, therefore need to signal be delivered to KIC by gateway, to guarantee the isolation of data.In order to guarantee the reliability of signal transmission, gateway adopts redundant configuration, and each two of safe level gateway and non-security level gateways are set, to guarantee not affect normal function after any a pair of gateway lost efficacy.
Further, as shown in Figure 3, in the monitored parameter display system, also comprise gateway unit 210 after the preferred embodiment accident of the present invention, be used for and forward from monitored parameter signal after the accident of safe level system bus reception; Wherein, gateway unit 210 comprises again safe level gateway and the non-security level gateway that connects in turn, show and recording unit for the second non-security level by non-security level gateway forwards again behind the monitored parameter signal process safe level gateway after the accident of safe level system bus output, be that the non-security level of KIC NC-VDU computerized information and control system shows and recording unit 211, thereby guaranteed the reliability of data transmission.
Monitored parameter sends to the demonstration of back-up disk indicating gauge direct the distribution after the accident after the present invention will isolate by isolation module, carry out analog to digital conversion and further processing by the parameter after will isolating, exporting to two non-security level display devices shows and record again, so that the Display Realization of monitored parameter variation after the accident, there have other display equipment to carry out when a display device breaks down therein to be for subsequent use, and do not affect normal operation; The present invention adopts digitized computer and network technologies to save physical space, owing to adopt digitizing technique, has increased the self diagnostic capability of monitored parameter after the accident simultaneously, the security that has improved nuclear power station, and implementation method is simple.
Should be understood that, for those of ordinary skills, can be improved according to the above description or conversion, and all these improvement and conversion all should belong to the protection domain of claims of the present invention.
Claims (9)
1. the display packing of a monitoring parameters after nuclear power station accident is characterized in that, may further comprise the steps,
Monitored parameter after A, the collection accident;
The monitored parameter that B, isolation gather is in case the interference in stop signal source;
C, the monitored parameter after will isolating show in safe level and non-security level equipment respectively, wherein safety class equipment is the back-up disk indicating gauge, and non-security level equipment is demonstration and recording unit and computerized information and the non-security level demonstration of control system and recording unit.
2. the display packing of monitoring parameters after nuclear power station accident according to claim 1 is characterized in that, step C specifically comprises,
C1, the monitored parameter after will isolating are directly distributed to described safety class equipment and are shown;
C2, when safety class equipment is unavailable, monitored parameter carries out digital conversion and processing and exports to the demonstration of described non-security level equipment and record after the accident after will isolate by non-security level equipment.
3. the display packing of monitoring parameters after nuclear power station accident according to claim 2 is characterized in that, step C2 specifically comprises,
The simulating signal of monitored parameter is converted into digital signal after C21, the accident after will isolating;
C22, described digital signal is carried out logical process, relatively judge the accident that gathers after monitored parameter whether mistake appears;
C23, when mistake does not appear in monitored parameter after the accident that gathers, will export to the safe level system bus by network through the digital signal after the logical process;
C24, will show and record for non-security level equipment through the digital data transmission after the logical process by described safe level system bus.
4. the display packing of monitoring parameters after nuclear power station accident according to claim 3 is characterized in that, step C24 specifically comprises,
The digital signal of monitored parameter after the accident that C241, reception and the described safe level system bus of taxonomic revision transmit;
The digital signal of monitored parameter after the accident of C242, non-security level demonstration and record process step C241 taxonomic revision.
5. the display packing of monitoring parameters after nuclear power station accident according to claim 4 is characterized in that, described step C24 also comprises,
The digital signal about monitored parameter after the accident that C243, the described safe level system bus that will receive transmit is passed through safe level gateway, non-security level gateway forwards successively;
Monitored parameter after the accident of non-security level gateway forwards described in C244, non-security level demonstration and the recording step C243.
6. the display system of a monitoring parameters after nuclear power station accident comprises for the parameter acquisition module that gathers monitored parameter after the accident, it is characterized in that, also comprises:
Isolation module is for the monitored parameter that gathers being isolated and exporting, in case the interference in stop signal source;
At least two display devices are used for showing through the monitored parameter after the isolation that described display device comprises safe level display device, intermediate process module and non-security level display device under safe level and non-security level; Described safe level display device is the back-up disk indicating gauge, is used for showing under safe level monitored parameter after the accident of described isolation module output; Monitored parameter carries out digital conversion and processing and output after the accident after described intermediate process module is used for isolating; Described non-security level display device comprises first non-security grade of display device and second non-security grade of display device, be respectively applied to monitored parameter after showing through the accident of described intermediate process module output under the non-security level, wherein first non-security grade of display device is for showing and recording unit, and second non-security grade of display device is that the non-security level of computerized information and control system shows and recording unit.
7. the display system of monitoring parameters after nuclear power station accident according to claim 6 is characterized in that, described intermediate process module specifically comprises:
Load module be used for to receive the simulating signal of monitored parameter after the accident after the isolation, and described simulating signal is converted into digital signal;
Logic processing module is used for described digital signal is carried out logical process, relatively judge the accident that gathers after monitored parameter whether mistake appears;
The network output module is used for and will exports by network through the digital signal after the logical process;
The safe level system bus, the monitored parameter signal is transferred to the demonstration of described non-security level display device after the accident that is used for described network output module is exported.
8. the display system of monitoring parameters after nuclear power station accident according to claim 7 is characterized in that, described first non-security grade of display device specifically comprises:
Processing module, the monitored parameter signal is processed after the accident that is used for obtaining from described safe level system bus;
Record and display unit are used for showing the signal of processing through described processing module under non-security level.
9. the display system of monitoring parameters after nuclear power station accident according to claim 8 is characterized in that, this system also comprises:
Gateway unit is used for and will be transmitted to described second non-security grade of display device from monitored parameter signal after the accident of described safe level system bus reception;
Wherein, described gateway unit comprises again,
The safe level gateway is for monitored parameter signal after the accident that sends described safe level system bus output;
Non-security level gateway is used for and will be transmitted to described second non-security grade of display device from monitored parameter signal after the described accident of described safe level gateway reception.
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Effective date of registration: 20151102 Address after: Futian District Shenzhen City, Guangdong province 518023 Shennan Road No. 69 Patentee after: China Nuclear Power Engineering Co., Ltd. Patentee after: Lingao Nuclear Power Co., Ltd. Patentee after: China General Nuclear Power Corporation Address before: Futian District Shenzhen City, Guangdong province 518023 Shennan Road No. 69 Patentee before: China Nuclear Power Engineering Co., Ltd. Patentee before: China Guangdong Nuclear Power Group Co., Ltd. |