EP3756198A1 - Emissionsüberwachungssystem für ein ventingsystem eines kernkraftwerks - Google Patents
Emissionsüberwachungssystem für ein ventingsystem eines kernkraftwerksInfo
- Publication number
- EP3756198A1 EP3756198A1 EP19708963.4A EP19708963A EP3756198A1 EP 3756198 A1 EP3756198 A1 EP 3756198A1 EP 19708963 A EP19708963 A EP 19708963A EP 3756198 A1 EP3756198 A1 EP 3756198A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- line
- sample
- venting
- sample container
- nuclear
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- 238000013022 venting Methods 0.000 title claims abstract description 45
- 238000012544 monitoring process Methods 0.000 title claims abstract description 21
- 239000007788 liquid Substances 0.000 claims abstract description 55
- 238000005070 sampling Methods 0.000 claims abstract description 26
- 238000004458 analytical method Methods 0.000 claims abstract description 25
- 238000000034 method Methods 0.000 claims abstract description 9
- 239000000443 aerosol Substances 0.000 claims description 33
- 238000005406 washing Methods 0.000 claims description 29
- 239000007921 spray Substances 0.000 claims description 17
- 238000001556 precipitation Methods 0.000 claims description 5
- 238000005201 scrubbing Methods 0.000 claims description 3
- 238000011144 upstream manufacturing Methods 0.000 claims description 3
- 238000011001 backwashing Methods 0.000 claims 1
- 238000000354 decomposition reaction Methods 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 27
- 238000000926 separation method Methods 0.000 description 14
- 230000004992 fission Effects 0.000 description 12
- 239000000047 product Substances 0.000 description 12
- 230000000694 effects Effects 0.000 description 9
- 239000002245 particle Substances 0.000 description 6
- 230000002285 radioactive effect Effects 0.000 description 5
- 238000011156 evaluation Methods 0.000 description 4
- 238000000605 extraction Methods 0.000 description 4
- 238000005259 measurement Methods 0.000 description 4
- ZCYVEMRRCGMTRW-UHFFFAOYSA-N 7553-56-2 Chemical compound [I] ZCYVEMRRCGMTRW-UHFFFAOYSA-N 0.000 description 3
- 238000001914 filtration Methods 0.000 description 3
- 229910052740 iodine Inorganic materials 0.000 description 3
- 239000011630 iodine Substances 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 2
- 238000009835 boiling Methods 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 238000011109 contamination Methods 0.000 description 2
- 230000008021 deposition Effects 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 150000002500 ions Chemical class 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000000717 retained effect Effects 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- RSWGJHLUYNHPMX-UHFFFAOYSA-N Abietic-Saeure Natural products C12CCC(C(C)C)=CC2=CCC2C1(C)CCCC2(C)C(O)=O RSWGJHLUYNHPMX-UHFFFAOYSA-N 0.000 description 1
- KHPCPRHQVVSZAH-HUOMCSJISA-N Rosin Natural products O(C/C=C/c1ccccc1)[C@H]1[C@H](O)[C@@H](O)[C@@H](O)[C@@H](CO)O1 KHPCPRHQVVSZAH-HUOMCSJISA-N 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 229910052792 caesium Inorganic materials 0.000 description 1
- TVFDJXOCXUVLDH-UHFFFAOYSA-N caesium atom Chemical compound [Cs] TVFDJXOCXUVLDH-UHFFFAOYSA-N 0.000 description 1
- 230000001427 coherent effect Effects 0.000 description 1
- 230000001143 conditioned effect Effects 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000009795 derivation Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 239000012717 electrostatic precipitator Substances 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 229910052732 germanium Inorganic materials 0.000 description 1
- GNPVGFCGXDBREM-UHFFFAOYSA-N germanium atom Chemical compound [Ge] GNPVGFCGXDBREM-UHFFFAOYSA-N 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000002808 molecular sieve Substances 0.000 description 1
- 229910052756 noble gas Inorganic materials 0.000 description 1
- 150000002835 noble gases Chemical class 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 239000003755 preservative agent Substances 0.000 description 1
- 230000002335 preservative effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 description 1
- AKHNMLFCWUSKQB-UHFFFAOYSA-L sodium thiosulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=S AKHNMLFCWUSKQB-UHFFFAOYSA-L 0.000 description 1
- 229940001474 sodium thiosulfate Drugs 0.000 description 1
- 235000019345 sodium thiosulphate Nutrition 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000008275 solid aerosol Substances 0.000 description 1
- KHPCPRHQVVSZAH-UHFFFAOYSA-N trans-cinnamyl beta-D-glucopyranoside Natural products OC1C(O)C(O)C(CO)OC1OCC=CC1=CC=CC=C1 KHPCPRHQVVSZAH-UHFFFAOYSA-N 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C17/00—Monitoring; Testing ; Maintaining
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/22—Devices for withdrawing samples in the gaseous state
- G01N1/2202—Devices for withdrawing samples in the gaseous state involving separation of sample components during sampling
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/22—Devices for withdrawing samples in the gaseous state
- G01N1/2247—Sampling from a flowing stream of gas
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/62—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating the ionisation of gases, e.g. aerosols; by investigating electric discharges, e.g. emission of cathode
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0004—Gaseous mixtures, e.g. polluted air
- G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
- G01N33/0027—General constructional details of gas analysers, e.g. portable test equipment concerning the detector
- G01N33/0036—General constructional details of gas analysers, e.g. portable test equipment concerning the detector specially adapted to detect a particular component
- G01N33/0055—Radionuclides
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C13/00—Pressure vessels; Containment vessels; Containment in general
- G21C13/02—Details
- G21C13/022—Ventilating arrangements
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C13/00—Pressure vessels; Containment vessels; Containment in general
- G21C13/10—Means for preventing contamination in the event of leakage, e.g. double wall
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C9/00—Emergency protection arrangements structurally associated with the reactor, e.g. safety valves provided with pressure equalisation devices
- G21C9/004—Pressure suppression
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/22—Devices for withdrawing samples in the gaseous state
- G01N1/2202—Devices for withdrawing samples in the gaseous state involving separation of sample components during sampling
- G01N2001/222—Other features
- G01N2001/2223—Other features aerosol sampling devices
-
- 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
Definitions
- the invention relates to a nuclear facility, in particular a nuclear power plant, with a containment, an associated venting system and with an emissi onsüberwachungssystem for monitoring the emissions of the venting system.
- the invention further relates to a method for emission monitoring of a venting system in a nuclear installation.
- Severe accidents of a nuclear power plant can result in the release of steam and hydrogen and the release of large quantities of radioactive fission products into the containment. Due to the high energy input into the containment and the release of non-condensing gases overpressure failure of the containment shell, which represents the last barrier to retain the fission products in the environment, no longer excluded. This is the case in particular for relatively small inerted boiling water reactor containments (typical volumes 5,000 to 20,000 m 3 ). The release of non-condensable hydrogen along with steam results in a rapid increase in pressure which exceeds the design pressure and can go to the failure pressure of the containment.
- the International Atomic Energy Agency (IAEA) and local safety authorities are calling for emissions monitoring to be performed during release of pressure. put activity.
- IAEA International Atomic Energy Agency
- the staff who is at the time of the accident on the plants, could be particularly be burdened by the non-sustainable noble gases and requires improved protection.
- the data on the released activity are basically required for the information of the population and the authorities, for the derivation of accidental measures such as evacuation and establishment of a security zone. Above all, a fast online provision of the essential important measurement data is required.
- a subsequent more detailed and detailed chemical and radiological analysis can be carried out with a so-called preservative filter in the laboratory.
- the fission products retained in the filter can be distinguished into iodine (organic and elemental) and aerosol-bound radionuclides.
- iodine organic and elemental
- aerosol-bound radionuclides In the case of a precise analytical splitting of the sample in the laboratory, a determination of all released components is possible. However, the laboratory analysis requires a much higher hore time and is not suitable for timely decisions.
- the release is therefore typically measured and recorded by an emissions monitoring system connected or coupled to the venting system.
- an emissions monitoring system is known for example from US 2016/01 18149 A1.
- the object of the invention is to provide a device and an associated method for obtaining a representative measurement sample, which is taken from the Reingaslei direction of the Ventingsystems, and can be measured in a subsequent Ana lysis system online on aerosol-shaped fission products.
- the following description discloses a special sampling method and associated sampling system, briefly sampler, with which it is possible to extract a representative sample from the Ventinggasstrom and analyze the se in an online measurement method on aerosol-bonded fission products and gaseous fission products.
- the invention particularly aims at the field of very fine aerosols which are to be expected after the filtering or cleaning stages of the venting system.
- the sampler is also suitable for the separation of large aerosols, so that even a malfunction of the venting system (eg failure of a filter stage) can be recorded online.
- the sampler comprises a scrubber area or wet scrubber for the separation of aerosols in the separation grain size range of preferably 0.1 to 1, 0 pm.
- the washing liquid can this with chemical substances, eg. For example, sodium thio sulfate may be conditioned to bind iodine. Furthermore, this will improve the wettability of the solid aerosol particles and their deposition.
- one or more, preferably as immersed in the washing liquid Venturi nozzles can be used.
- the liquid to gas ratio in the Venturi nozzle is preferably 0.5 to 10.
- the pre-cleaned gas in the scrubber then flows into an ionization separation zone or ionization separator for short.
- This consists essentially of a high voltage field with a preferably centrally arranged spray electrode and a collecting electrode.
- a collecting electrode the container wall of Probenamegefäßes or short sample vessel serve.
- the electric ionization field is formed between the emitting negative spray electrode having a high voltage of, for example, 10 to 80 kV and the grounded collecting electrode.
- the solid and liquid particles of the aerosol dispersion are electrostatically charged by ions and electrons, which he testifies in the corona of the high DC voltage spray wire.
- the still in the gas of the sample stream particles and aerosols are negatively charged and migrate in the electric field to the low impact surface (positive pole).
- the purified gas is fed back into the Venting effet, preferably as downstream of a switched into the Venting réelle choke, the so-called Venting throttle.
- the pressure difference generated by the vent throttle allows the sampling flow (passive drive).
- a flow restrictor also called sample throttle.
- the throttle in the sample line ensures that the pressure in the sampling vessel is the same as in the venting line. A vaporizing evaporation and evaporation of the washing liquid is thereby avoided.
- the washing liquid from the sampler is fed continuously or periodically to an analysis unit for nuclide-specific online measurement.
- the analyzer unit may comprise a spectrometer, such as a germanium spectrometer or fluorescence spectrometer. Only by transferring the aerosols into the washing liquid is it possible to guide the medium to be measured over long distances in a sampling line to the analyzer, without resulting in impermissible deposits of the aerosols in the sampling line.
- the analysis unit can be placed here be Spotifyort in sufficient distance to the radiating Pro.
- a gaseous sample is taken from the sample restrictor and fed to the analyzer.
- the analyzed sample is fed back behind the sample throttle.
- the gaseous sample becomes passive, namely promoted by the Druckdiffe difference at the sample throttle.
- the activity collected in the scrubbing liquid can be used at the end of the venting process as a preservation proof of the integrally released activity.
- two or more samplers can be connected in series.
- the inventive concept comprises a Probe Spotifyge vessel with an integrated upstream wet separation, preferably with Venturi scrubber, and an ionizing electrical Feinabscheideshu the aerosol dispersion.
- the return of the fine aerosols in the washing liquid allows loss minimizing transport of aerosols to the analyzer.
- An additional gas sampling is preferably carried out passively by using the pressure difference generated via a throttle.
- the sample stream is advantageously kept constant by supercritical operation of the throttle, so that the operating point of the sampler can be designed optimized and kept constant. As a result, the relevant accounting of the released fission products based on the Ventingstrom is possible.
- the analyzers can be placed protected at a great distance from the sample location.
- FIG. FIG. 1 shows, in the manner of an overview representation, a detail of a nuclear power plant with a venting system for filtered pressure relief in the event of a serious accident and with an associated emission monitoring system.
- FIG. 2 shows a first variant of the emission monitoring system of FIG. 1 in an enlarged view.
- FIG. 3 shows a second variant of the emission monitoring system.
- nuclear power plant shown in detail is a nuclear power plant 2, for example of the type pressurized water reactor or boiling water reactor, with a containment called containment 4, which encloses the nuclear components and hermetically shields from the environment in the normal case.
- containment 4 a containment encloses the nuclear components and hermetically shields from the environment in the normal case.
- FCVS Filtered Containment Venting System
- a pressure relief line or Ventylinei- device 8 is connected to the containment 4, through which, if necessary - after opening a zugehö ring shutoff valve 10 - the pressurized Containmentatmo-sphere, for example, via a chimney 12, can be directed into the open.
- a pressure relief line or Ventylinei- device 8 is connected to the containment 4, through which, if necessary - after opening a zugehö ring shutoff valve 10 - the pressurized Containmentatmo-sphere, for example, via a chimney 12, can be directed into the open.
- the Venting effet 8 is a number of filter units 14 or filter stages for the pressure relief flow or Ventingstrom connected to minimize the radioactive Belas direction of the environment during the venting process. These may be dry filters, wet filters, wet scrubbers, molecular sieves and the like, or any combination thereof.
- an emissions monitoring system 1 6 installed in the system according to FIG. 1 .
- the emission monitoring system 16 comprises a sampling system 18, which extracts a sample from the filtered venting stream downstream of the filter units 14, ie from the so-called clean gas flow, and supplies the same to an analysis unit 20 for determining the radiological activity contained therein.
- the analysis unit 20 may include, in particular, a spectrometer or other device for determining the nuclide-specific activity.
- the total amount released into the environment can be ( nuclide-specific) activity and visualize on a display device, preferably in real time (online monitoring).
- further measured values can also be included in the evaluation, for example by a dosimeter 26, which is positioned, for example, in the vicinity of the venting line 8 or its outlet 28.
- the power supply 96 for the evaluation unit 24 and the analysis unit 20 and any other electrical equipment is preferably designed to be self-sufficient and fail-safe, such as by means of batteries 98 or accumulators.
- the emission monitoring is particularly that portion of the activity of interest, which goes back to the entrained Ventingstrom aerosols, especially the very small particles or suspended particles, which are not or only insufficiently retained in the filter unit 14.
- the emission monitoring system 16 described here is therefore optimized in particular for obtaining a representative aerosol sample from the clean gas flow, which in the fol lowing with reference to FIG. 2 is explained in more detail.
- FIG. 2 illustrated emission monitoring system 16 An essential part of the in FIG. 2 illustrated emission monitoring system 16 is a sampling system 18, which has a sample container 32 with an integrated wet scrubber 34.
- the sample container 32 is an allsei TIG pressure and media sealed container, here in the example of cylindri shear shape and arranged upright.
- a washing liquid space 36 In a lower region of the sample container 32 is a washing liquid space 36, which is filled during operation up to a predetermined filling level height 38 with a washing liquid 40. Above this there is a gas space 42.
- a sampling line 44 branches off the venting line 8 and leads into the sample container 32.
- the Probeanisingtechnisch 44 terminates end in the washing liquid keitsraum 36, wherein the outlet is advantageously formed in the manner of a venturi 46.
- the respective Venturi nozzle 46 preferably has a constriction or throat 48 with an opening in the nozzle wall over which the inside lying flow channel communicates with the surrounding washing liquid 40 communicates. As the sample stream flows through the venturi 46, suction and entrainment of the surrounding wash liquid 40 through the opening at the throat 48 occurs.
- a throttle 52 Downstream of the branch 50 of the sampling line 44, a throttle 52 is connected in the Venting Arthur 8, which is also referred to as Venting throttle. Furthermore, a return feed line 54 leads from the gas space 42 of the sample container 32 back into the venting line 8, wherein the junction 56 downstream of the throttle 52 is located. In the return feed line 54, a throttle 58 is also connected, which is also referred to as a sample throttle.
- part of the venting stream is branched off from the ducting line 8 and passed as sample stream through the sampling line 44 into the sample container 32.
- the branched partial flow passes through the Venturi nozzle 46, where he mixed with the sucked in the throat portion 48 or with cracked washing liquid 40 and intimately interacts.
- This mixture is discharged into the washing liquid 40 at the nozzle outlet 60 below the liquid level.
- a blow can be made directly into the gas space 42. Due to the intimate interaction of the Ventingstroms with the washing liquid 40, it comes to a storage of entrained Ae rosole in the washing liquid 40.
- the degree of separation is particularly high when Ver use of Venturi nozzles. Alternatively, however, other outlet nozzles or outlet openings are conceivable.
- condensable gas constituents of the venting stream in the sample container 32 are partly precipitated in liquid form, as a result of which the fill level 38 tends to increase in the venting mode.
- a return of washing liquid 40 from the sample container 32 into the containment 4 via a merely in FIG. 1 indicated liquid return feed line 62 may be provided.
- a discharge of excess washing liquid 40 can be carried out in a separate collecting container. After the gravity caused by separation of sinking down liquid and gas rising upward, the purified gaseous ge partial flow of Ventingstream collects in the gas space 42 of the sample container 32 and flows up through the return line 54 from finally to the junction 56 of the Return line 54 in the venting line 8 to reunite with the main stream.
- the junction 56 is located downstream of the restrictor 52 with respect to the ducting line 8.
- the pressure ratios are adjusted such that the branching and later reunification of the paralle partial flows no further drive means such as pumps or the like Benö taken, but only by the overpressure in the containment 4 is driven relative to the ambient atmosphere.
- an electrical ionisation separator 64 (also called an electrostatic separator, corona separator or electrostatic precipitator) is connected to the wet scrubber 34 integrated in the sample container 32, which advantageously also is integrated into the sample container 32
- the wet scrubber 34 is therefore to be regarded as a coarse separator or first separator stage, and the lo nisationsabscheider 64 forms a fine separator or a second separator stage.
- the ionization separator 64 comprises at least one spray electrode 66 and a precipitation electrode 68, between which a voltage difference in the high voltage region of, for example, 20 kV to 100 kV is applied during operation by means of a high voltage generator 70.
- the Hochwoodsge generator 70 is suitably arranged outside of the sample container 32 and connected via a guided through the container wall 72, electrically insulated connection cable 74 to the spray electrode 66.
- the spray electrode 66 and the precipitation electrode 68 are located in the gas space 42 of the sample container 32.
- the precipitation electrode 68 may also, as shown in FIG. 2, be formed by the (grounded) metallic container wall 72 of the sample container 32.
- the electrons and ions traveling in the gas flow are ionized in the electrical discharge field field (corona) to the collecting electrode 68 at the surface of which they precipitate or settle.
- a liquid spraying speed cleaning system or spray system 76 the never thrown aerosols are continuously or at intervals, in particular periodically, backwashed by the collecting electrode 68 in the washing liquid 40 of the scrubber 34.
- a knocking mechanism may be provided for the Abreini supply.
- venturi nozzles 46 are advantageously submerged deep enough in the washing liquid 40, so that there is no disturbing ejection upwards into the region of the ionization separator 64.
- the preferred mode of operation of the spray system 76 is a continuous spray operation.
- a liquid extraction line 78 is connected, in which a feed pump 80 is connected, and further downstream leads to the analysis unit 20, which includes, for example, a gamma spectrometer and / or a mass spectrometer ,
- the analysis unit 20 includes, for example, a gamma spectrometer and / or a mass spectrometer .
- liquid keitsueck him 82 By guided from the analysis unit 20 in the sample container 32 liquid keitsueck him 82, the liquid sample is conveyed back into the sample container 32.
- the liquid sample is therefore to some extent attached to the analysis unit 20 before and is there preferably "on the fly" analyzed.
- the feed pump 80 may also be arranged downstream of the analysis unit 20.
- the liquid return 82 branches at a branch line 84 into two sub-strands. One of them leads directly into the washing liquid 40 back, so has a arrange in the washing liquid chamber 36 th outlet 86.
- the other forms a feed line 100 for preferably as high up in the gas space 42, above the collecting electrode 68 to at least one spray nozzle 88 of the spray system 76.
- the Dunsver branch 84 is advantageously designed as a controllable / switchable 3-way valve to the flow rate through the line strands as required SET len.
- a gas sampling line 90 is additionally present, which is connected on the input side downstream of the ionization separator 64, but still upstream of the throttle 58, to the gas space 42 of the sample container 32 or to the return feed line 54.
- the Gasprobelei device 90 is passed to the analysis unit 20 and the output side downstream of the throttle 58 to the return feed line 54 or downstream of the throttle 52 is connected directly to the venting line 8.
- a throttle may be arranged in the gas sampling line 90. In this way, a gas sample of the passive
- Gas stream are taken and analyzed after it has passed through the two from separator stages (wet scrubber 34 and ionisationsabscheider 64) within the sample container 32 and the aerosols contained therein were deposited in the washing liquid 40.
- the liquid samples from both sample containers 32, 32 ' are merged.
- the sample mixture is then - driven by the feed pump 80 - past the analysis unit 20 and finally distributed via a system of liquid return lines 82 to the respective spray system 76 and to each directly into the washing liquid 40 outlet outlet 86 in both sample containers 32, 32 ' see also FIG.2).
- the liquid samples from both sample containers 32, 32 ' for example, separated from each other past the analysis unit 20 and the respective original sample container 32, 32' are returned.
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Plasma & Fusion (AREA)
- General Engineering & Computer Science (AREA)
- High Energy & Nuclear Physics (AREA)
- General Health & Medical Sciences (AREA)
- Immunology (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- Pathology (AREA)
- General Physics & Mathematics (AREA)
- Biomedical Technology (AREA)
- Molecular Biology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Combustion & Propulsion (AREA)
- Food Science & Technology (AREA)
- Medicinal Chemistry (AREA)
- Sampling And Sample Adjustment (AREA)
- Structure Of Emergency Protection For Nuclear Reactors (AREA)
- Monitoring And Testing Of Nuclear Reactors (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102018202702.1A DE102018202702B3 (de) | 2018-02-22 | 2018-02-22 | Emissionsüberwachungssystem für ein Ventingsystem eines Kernkraftwerks |
PCT/EP2019/054251 WO2019162350A1 (de) | 2018-02-22 | 2019-02-20 | Emissionsüberwachungssystem für ein ventingsystem eines kernkraftwerks |
Publications (1)
Publication Number | Publication Date |
---|---|
EP3756198A1 true EP3756198A1 (de) | 2020-12-30 |
Family
ID=65685295
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19708963.4A Withdrawn EP3756198A1 (de) | 2018-02-22 | 2019-02-20 | Emissionsüberwachungssystem für ein ventingsystem eines kernkraftwerks |
Country Status (6)
Country | Link |
---|---|
US (1) | US20210065922A1 (de) |
EP (1) | EP3756198A1 (de) |
JP (1) | JP2021514473A (de) |
CN (1) | CN111630612A (de) |
DE (1) | DE102018202702B3 (de) |
WO (1) | WO2019162350A1 (de) |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH682188A5 (de) * | 1991-07-18 | 1993-07-30 | Asea Brown Boveri | |
DE4126894A1 (de) * | 1991-08-14 | 1993-02-18 | Siemens Ag | Verfahren und vorrichtung zur gewinnung von proben aus der atmosphaere in einem gasdicht abgeschlossenen behaelter, insbesondere aus dem reaktorsicherheitsbehaelter eines kernkraftwerks |
FR2748844B1 (fr) * | 1996-05-17 | 1998-08-14 | Framatome Sa | Dispositif de recuperation de fluide contenu dans le circuit de refroidissement d'un reacteur nucleaire |
RU8515U1 (ru) * | 1998-04-15 | 1998-11-16 | ЗАО "Дигар" | Установка подавления радиоактивности газовых выбросов |
JP4356012B2 (ja) * | 2004-03-15 | 2009-11-04 | 日立Geニュークリア・エナジー株式会社 | 原子力プラント |
CN101471149B (zh) * | 2007-12-29 | 2011-05-04 | 中国核动力研究设计院 | 均匀性水溶液核反应堆氮气转化和料液自动补酸系统及补酸方法 |
KR20110101234A (ko) * | 2008-12-29 | 2011-09-15 | 테이트 앤드 라일 테크놀러지 리미티드 | 용융염 처리 시스템 및 공정 |
EP2617039A4 (de) * | 2010-09-17 | 2016-03-30 | Atomic Energy Of Canada Ltd | Abschaltungsalgorithmus für reaktoren |
DE102013205524A1 (de) * | 2013-03-27 | 2014-10-02 | Areva Gmbh | Ventingsystem für das Containment einer kerntechnischen Anlage |
DE102013205525A1 (de) * | 2013-03-27 | 2014-10-02 | Areva Gmbh | Ventingsystem für das Containment einer kerntechnischen Anlage |
DE102013207595B3 (de) * | 2013-04-25 | 2014-09-25 | Areva Gmbh | Emissionsüberwachungssystem für ein Ventingsystem eines Kernkraftwerks |
-
2018
- 2018-02-22 DE DE102018202702.1A patent/DE102018202702B3/de not_active Expired - Fee Related
-
2019
- 2019-02-20 CN CN201980009666.4A patent/CN111630612A/zh active Pending
- 2019-02-20 US US16/969,867 patent/US20210065922A1/en not_active Abandoned
- 2019-02-20 JP JP2020544516A patent/JP2021514473A/ja active Pending
- 2019-02-20 EP EP19708963.4A patent/EP3756198A1/de not_active Withdrawn
- 2019-02-20 WO PCT/EP2019/054251 patent/WO2019162350A1/de unknown
Also Published As
Publication number | Publication date |
---|---|
US20210065922A1 (en) | 2021-03-04 |
JP2021514473A (ja) | 2021-06-10 |
CN111630612A (zh) | 2020-09-04 |
WO2019162350A1 (de) | 2019-08-29 |
DE102018202702B3 (de) | 2019-06-13 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE2917004A1 (de) | Verfahren und einrichtung zur abschirmung gesundheitsschaedlicher substanzen | |
DE3527732A1 (de) | Filtergeraet | |
DE102008011949A1 (de) | Elektrostatischer Abscheider | |
DE1106435B (de) | Vorrichtung und Verfahren zur Auffindung schadhafter Brennelemente in heterogenen Kernreaktoren | |
DE3716350A1 (de) | Verfahren und einrichtung zur aufbereitung eines zu analysierenden gases | |
EP0269847A1 (de) | Kernkraftwerk mit einer Sicherheitshülle | |
EP0598789B1 (de) | Verfahren und vorrichtung zur gewinnung von proben aus der atmosphäre in einem gasdicht abgeschlossenen behälter, insbesondere aus dem reaktorsicherheitsbehälter eines kernkraftwerks | |
DE102015011285A1 (de) | Bodenstation zum Laden eines Kraftfahrzeugs | |
EP1658621B1 (de) | Kerntechnische anlage und verfahren zur druckentlastung einer kerntechnischen anlage | |
DE2129182A1 (de) | Verfahren und Einrichtung zur Feststellung teilchenförmigen Materials in einer Gasströmung | |
DE4101107A1 (de) | Kontinuierlich arbeitende regenwasser-ueberwachungsvorrichtung und verfahren zur kontinuierlichen ueberwachung von regenwasser | |
DE102018202702B3 (de) | Emissionsüberwachungssystem für ein Ventingsystem eines Kernkraftwerks | |
DE3410394C2 (de) | Sicherheitsvorrichtung für ein Umlaufsystem und Tintentrahldrucker | |
DE2927722A1 (de) | Vorrichtung zur abtrennung von dunst o.dgl. aus einem gasstrom | |
DE3543489C2 (de) | ||
DE1539784B1 (de) | Verfahren und Vorrichtung zur kontinuierlichen Messung der Radioaktivitaet von Aerosolen | |
DE202023100333U1 (de) | Mobile Luftfilteranlage | |
DE10110156B4 (de) | Verfahren zur Verdünnung von Aerosolen bei der Messung der Aerosolkonzentration und Vorrichtung zur Durchführung des Verfahrens | |
DE102021129671A1 (de) | Filtermodul, Anlage zur Filterung von Stäuben und Verfahren zur Abtrennung von Stäuben aus einem Gasstrom | |
EP0408939B1 (de) | Verfahren und Vorrichtung zur Luftprobennahme aus dem Sicherheitsbehälter eines Kernkraftwerkes | |
DE202016103037U1 (de) | Vorrichtung zur Ausscheidung von Schlechtanteilen aus Schüttgut | |
DE3324523A1 (de) | Einrichtung zum nachweis von jodisotopen | |
DE69206664T2 (de) | Automatische Anlage zum Fördern und Wiegen von mit einer radioaktiven Flüssigkeit gefüllten Flaschen zwischen einer Entnahmevorrichtung und einer Analysevorrichtung | |
EP0419994A1 (de) | Verfahren zur Überwachung der Aktivität eines gasförmigen oder flüssigen Mediums in einem Überwachungsvolumen kerntechnischer Anlagen und Vorrichtung zu seiner Durchführung | |
DE1539784C (de) | Verfahren und Vorrichtung zur kontinuierlichen Messung der Radioaktivität von Aerosolen |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: UNKNOWN |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE |
|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE |
|
17P | Request for examination filed |
Effective date: 20200918 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR |
|
AX | Request for extension of the european patent |
Extension state: BA ME |
|
DAV | Request for validation of the european patent (deleted) | ||
DAX | Request for extension of the european patent (deleted) | ||
RIC1 | Information provided on ipc code assigned before grant |
Ipc: G01N 1/22 20060101ALI20210907BHEP Ipc: G21C 13/10 20060101ALI20210907BHEP Ipc: G21C 13/02 20060101ALI20210907BHEP Ipc: G21C 17/00 20060101ALI20210907BHEP Ipc: G21C 9/004 20060101AFI20210907BHEP |
|
GRAP | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOSNIGR1 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: GRANT OF PATENT IS INTENDED |
|
INTG | Intention to grant announced |
Effective date: 20211019 |
|
RAP3 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: FRAMATOME GMBH |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
18D | Application deemed to be withdrawn |
Effective date: 20220301 |