WO2006070091A1 - Procede et dispositif de determination du taux de combustion d'un assemblage de combustible du coeur d'un reacteur nucleaire et utilisation - Google Patents
Procede et dispositif de determination du taux de combustion d'un assemblage de combustible du coeur d'un reacteur nucleaire et utilisation Download PDFInfo
- Publication number
- WO2006070091A1 WO2006070091A1 PCT/FR2005/003158 FR2005003158W WO2006070091A1 WO 2006070091 A1 WO2006070091 A1 WO 2006070091A1 FR 2005003158 W FR2005003158 W FR 2005003158W WO 2006070091 A1 WO2006070091 A1 WO 2006070091A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- fuel
- fuel assembly
- rate
- core
- collimator
- Prior art date
Links
- 238000002485 combustion reaction Methods 0.000 title claims abstract description 24
- 238000000034 method Methods 0.000 title claims abstract description 23
- 239000003758 nuclear fuel Substances 0.000 title claims description 17
- 239000000446 fuel Substances 0.000 claims abstract description 145
- 238000005259 measurement Methods 0.000 claims abstract description 65
- 230000000712 assembly Effects 0.000 claims abstract description 37
- 238000000429 assembly Methods 0.000 claims abstract description 37
- 230000004992 fission Effects 0.000 claims abstract description 19
- 229910052732 germanium Inorganic materials 0.000 claims abstract description 9
- GNPVGFCGXDBREM-UHFFFAOYSA-N germanium atom Chemical compound [Ge] GNPVGFCGXDBREM-UHFFFAOYSA-N 0.000 claims abstract description 9
- 239000000700 radioactive tracer Substances 0.000 claims abstract description 7
- 238000004364 calculation method Methods 0.000 claims abstract description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 15
- 238000001816 cooling Methods 0.000 claims description 11
- 238000003860 storage Methods 0.000 claims description 10
- 238000006073 displacement reaction Methods 0.000 claims description 8
- 238000005457 optimization Methods 0.000 claims description 8
- 238000012958 reprocessing Methods 0.000 claims description 7
- WZECUPJJEIXUKY-UHFFFAOYSA-N [O-2].[O-2].[O-2].[U+6] Chemical compound [O-2].[O-2].[O-2].[U+6] WZECUPJJEIXUKY-UHFFFAOYSA-N 0.000 claims description 6
- SHZGCJCMOBCMKK-KGJVWPDLSA-N beta-L-fucose Chemical compound C[C@@H]1O[C@H](O)[C@@H](O)[C@H](O)[C@@H]1O SHZGCJCMOBCMKK-KGJVWPDLSA-N 0.000 claims description 6
- 238000000295 emission spectrum Methods 0.000 claims description 6
- 230000008569 process Effects 0.000 claims description 6
- 229910000439 uranium oxide Inorganic materials 0.000 claims description 6
- 238000013507 mapping Methods 0.000 claims description 5
- 238000005304 joining Methods 0.000 claims description 2
- 238000012545 processing Methods 0.000 claims description 2
- 230000004224 protection Effects 0.000 claims description 2
- 238000001228 spectrum Methods 0.000 claims description 2
- 241000490229 Eucephalus Species 0.000 claims 1
- 230000003595 spectral effect Effects 0.000 abstract 1
- 239000000463 material Substances 0.000 description 12
- 238000001730 gamma-ray spectroscopy Methods 0.000 description 6
- 230000009849 deactivation Effects 0.000 description 4
- 239000002915 spent fuel radioactive waste Substances 0.000 description 3
- JFALSRSLKYAFGM-OIOBTWANSA-N uranium-235 Chemical compound [235U] JFALSRSLKYAFGM-OIOBTWANSA-N 0.000 description 3
- OYEHPCDNVJXUIW-FTXFMUIASA-N 239Pu Chemical compound [239Pu] OYEHPCDNVJXUIW-FTXFMUIASA-N 0.000 description 2
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 description 2
- 238000007654 immersion Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 239000008188 pellet Substances 0.000 description 2
- JFALSRSLKYAFGM-UHFFFAOYSA-N uranium(0) Chemical compound [U] JFALSRSLKYAFGM-UHFFFAOYSA-N 0.000 description 2
- 229910052726 zirconium Inorganic materials 0.000 description 2
- BTFMCMVEUCGQDX-UHFFFAOYSA-N 1-[10-[3-[4-(2-hydroxyethyl)-1-piperidinyl]propyl]-2-phenothiazinyl]ethanone Chemical compound C12=CC(C(=O)C)=CC=C2SC2=CC=CC=C2N1CCCN1CCC(CCO)CC1 BTFMCMVEUCGQDX-UHFFFAOYSA-N 0.000 description 1
- 229910052691 Erbium Inorganic materials 0.000 description 1
- 229910052688 Gadolinium Inorganic materials 0.000 description 1
- 229910052770 Uranium Inorganic materials 0.000 description 1
- 229910001093 Zr alloy Inorganic materials 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 125000004429 atom Chemical group 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000008034 disappearance Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- UYAHIZSMUZPPFV-UHFFFAOYSA-N erbium Chemical compound [Er] UYAHIZSMUZPPFV-UHFFFAOYSA-N 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- UIWYJDYFSGRHKR-UHFFFAOYSA-N gadolinium atom Chemical compound [Gd] UIWYJDYFSGRHKR-UHFFFAOYSA-N 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 125000004433 nitrogen atom Chemical group N* 0.000 description 1
- 229960004265 piperacetazine Drugs 0.000 description 1
- UTDLAEPMVCFGRJ-UHFFFAOYSA-N plutonium dihydrate Chemical compound O.O.[Pu] UTDLAEPMVCFGRJ-UHFFFAOYSA-N 0.000 description 1
- FLDALJIYKQCYHH-UHFFFAOYSA-N plutonium(IV) oxide Inorganic materials [O-2].[O-2].[Pu+4] FLDALJIYKQCYHH-UHFFFAOYSA-N 0.000 description 1
- 230000001950 radioprotection Effects 0.000 description 1
- 238000004611 spectroscopical analysis Methods 0.000 description 1
- 230000009182 swimming Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C17/00—Monitoring; Testing ; Maintaining
- G21C17/06—Devices or arrangements for monitoring or testing fuel or fuel elements outside the reactor core, e.g. for burn-up, for contamination
- G21C17/063—Burn-up control
-
- 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 method and a device for determining the combustion rate of a fuel assembly of the core of a nuclear reactor and, in particular, of a nuclear reactor cooled by light water.
- Nuclear reactors cooled by light water such as pressurized water nuclear reactors comprise a core consisting of fuel assemblies each comprising a bundle of parallel fuel rods between them containing at least one nuclear fuel such as uranium UO 2 or plutonium dioxide PuO 2 or uranium oxide poisoned for example by gadolinium, erbium or zirconium boride ZrB 2 .
- the fissile nuclear fuel contained in the fuel assemblies is partially consumed, so that it is necessary to replace at least some fuel assemblies of the nuclear reactor core with new assemblies.
- the spent fuel assemblies that are removed from the core are transported to a deactivation pool, where they can remain for very long periods of time, before possibly being reprocessed by methods for recovering the fissile material still present in the reactor.
- fuel assembly uranium 235
- fissile material produced by the action of neutrons in the nuclear reactor core on uranium U238 nuclear fuel (plutonium 239).
- the state of combustion that is to say the rate of combustion or depletion of the fuel assemblies, this combustion rate being measured in the form of an energy produced by the fissile material consumed relative to the mass of the fuel.
- the depletion rate is generally expressed in megawatt days per tonne or MWj / t.
- Some algorithms make it possible to calculate the combustion rate of the nuclear fuel material from a measurement of emission rate ⁇ .
- methods based on the principle of ⁇ -spectrometry can only be used on sufficiently cooled fuel after leaving the nuclear reactor core. Indeed, measurements by ⁇ -spectrometry must be carried out on long-lived isotopes well chosen and representative of the disappearance of atoms of fissile material in the nuclear fuel and the fuel assemblies include, at their exit from the heart, numerous short-lived fission products that are likely to interfere with the long-lived fission products that are used for ⁇ -spectrometry measurements.
- the measurements made on fuel leaving the core, by ⁇ -spectrometry are therefore not representative and it is not possible to accurately calculate the fuel exhaustion rate from these measurements.
- measurements are made after more than thirty days and usually after several months of residence of the fuel assemblies in the deactivation pool.
- the aim of the invention is therefore to propose a method for determining the combustion rate of a fuel assembly of the core of a nuclear reactor consisting of a bundle of fuel rods parallel to each other containing at least one nuclear fuel among the uranium oxide and plutonium oxide, extracted from the core and irradiated after a period of operation of the reactor, from a measurement of the emission rate ⁇ of at least one line of the emission spectrum ⁇ of at least one isotope of a fission product of the irradiated nuclear fuel, which process can be implemented quickly after the unloading of the fuel assembly from the core of a nuclear reactor.
- the emission rate ⁇ is measured in counts per second, of the at least one line of the spectrum of the fission product constituting a tracer of the combustion rate, less than 30 days after the exit of the assembly of the core, using a high-purity, high-resolution germanium photon detector cooled by a cryogenic system, placed in the air and having a radiological protection to limit background noise, equipped with a counting chain and a collimator having a rectilinear conduit having a first end adjacent to an area of the fuel assembly and a second airtight end to the photon detector, the fuel assembly being separated from the first end of the rectilinear conduit collimator by a layer of water of a thickness to mitigate count rates and moved in a longitudinal direction of the fuel assembly relative to the ollimateur, so as to perform measurement in each of a plurality of measurement points along the length of the fuel assembly,
- the tracer is at least one of 144 Ce at 2185 keV, 134 Cs at 795 keV, 137 Cs at 661 keV and 106 Ru at 622 keV, and the combustion rate of the fuel assembly at each of the measurement points is calculated from calculation and correction software from the measurement of emission rate ⁇ by self-attenuation calculations and evolution codes.
- the first end of the rectilinear conduit of the collimator is separated from the fuel assembly by a layer of water having a thickness of approximately 50 cm. a measurement is made at each of the points of the plurality of measurement points along the length of the fuel assembly, for a period of at least thirty seconds, during which photons are counted.
- the fuel assembly is moved in its longitudinal direction, so as to measure in successive longitudinal sections of the fuel assembly with a length of 1 mm to 2 mm.
- the invention also relates to a device for determining the combustion rate of a fuel assembly of the core of a reactor consisting of a bundle of parallel fuel rods containing at least one nuclear fuel among uranium oxide. and the plutonium oxide, extracted from the core and irradiated after a period of operation of the reactor, from a measurement of the emission rate ⁇ of at least one line of the ⁇ emission spectrum of at least an isotope of a fission product of the irradiated nuclear fuel, characterized in that it comprises:
- a high purity and high resolution germanium photon detector a shield having a cavity for housing the detector
- an elongated collimator having a first end intended to be placed in the vicinity of the fuel assembly and a second end intended to be placed in the vicinity of the shielding enclosing the detector, traversed by a guide slot in its longitudinal direction; between its first and second ends in the extension of a shield channel joining a surface of the shield directed towards the collimator to the cavity of the detector,
- the slot of the collimator has, in the direction of the length of the fuel assembly, a width of one to two millimeters.
- it furthermore comprises a mechanical system for precisely moving and guiding the fuel assembly along its longitudinal direction, inside a pool in which the fuel assembly is immersed.
- the mechanical guiding and displacement system is controlled by a guiding and moving automaton connected to the computer.
- the method and the device according to the invention can be used for one of the following tasks:
- FIG. 1 shows the assembly of fuel 1 discharged from the core of a nuclear reactor cooled by pressurized water in the ⁇ emission rate measurement position in a pool, close to the nuclear reactor, for example in the fuel pool of the nuclear power plant.
- the fuel assemblies for nuclear reactors cooled by pressurized water comprise a bundle of rods which are held within a framework of the fuel assembly, in arrangements where the rods are all parallel to each other. .
- the fuel assembly is disposed in the pool with its axis (i.e., the axis of the pencil beam 3) in an elongated arrangement, at a certain depth below the upper level 2 of the water in the fuel pool.
- the fuel assembly is introduced inside a precise guide system 4 and moved in its axial direction, as represented by the arrow 5, so as to scroll one of the faces of the fuel assembly in front of the device 6 to measure the rate of exhaustion.
- the fuel assembly comprises a beam having a straight prismatic shape, that is to say the shape of a parallelepiped with a square section.
- the rod bundle 3 of the fuel assembly may have 17 x 17 rods arranged and held in parallel arrangements and such that their cross sections in a plane perpendicular to the longitudinal direction of the assembly of fuel are arranged in a regular square mesh network constituting the cross section of the bundle of the fuel assembly.
- the rods of a fuel assembly for a pressurized water nuclear reactor consist of alloy tubes of zirconium with a diameter of the order of 10 mm and a length greater than 4 m containing fuel pellets and closed at their ends by plugs.
- the fuel assembly 1 therefore has a length greater than 4 m.
- Its cross section has the shape of a square having a side of the order of 20 cm.
- the process according to the invention makes it possible to determine the rate of exhaustion of a fuel assembly 1 shortly after leaving the core of a pressurized water nuclear reactor and, generally speaking, less than thirty days after out of the assembly of the heart.
- the method of the invention is implemented using a device 6 of ⁇ spectrometry for counting the photons emitted by at least one isotope of a long-lived fission product contained in the irradiated fuel assembly 1 and originating from fission of the fissile material from the fuel assembly (uranium 235 or plutonium 239).
- the spectrometry apparatus 6 generally comprises a collimator 7, a detector 8 disposed inside a shield 9, a chain 10 for rapidly acquiring the emission rate ⁇ and a calculator 11 for processing. measurements and display of results in the form of fuel assembly depletion rate. Since it is necessary to use a photon detector requiring cooling at cryogenic temperatures, the device 6 further comprises a compressor 12 for cooling the cavity 9a of the screen 9 in which the detector
- the measurement is performed on successive regions in the longitudinal direction of the fuel assembly and the displacement of the fuel assembly in its longitudinal direction may require the use of a controller. guiding and moving the fuel assembly 13 in order to increase the accuracy of the measurements.
- the rapid acquisition chain 10 of emission rate measurements ⁇ and the automatic control and displacement automaton 13 are connected to the computer 11.
- the collimator 7 comprises a body made of heavy material, generally made of lead, which may have, for example, the shape of a parallelepiped or a cylinder whose length is greater than the immersion depth of the fuel assembly below the water level 2 of the pool. This depth of immersion is generally of the order of 3 to 4 meters, and the collimator has a sufficient length so that its lower end is at a distance of about 50 cm from the fuel assembly.
- the width of the collimator in the transverse direction of the face of the fuel assembly on which the measurement is made is equal to a fraction of the square section side of the fuel assembly.
- the collimator 7 comprises a longitudinal slot 7a extending along its entire length, the thickness of which, in the longitudinal direction, is between 1 mm and 2 mm, in order to carry out successive measurements on zones of the assembly of fuel having a length of 1 mm to 2 mm in the longitudinal direction.
- the guiding system 4 of the fuel assembly makes it possible to move the fuel assembly along successive measurement zones with an accuracy greater than 1 mm.
- the photon detector 8 is a high purity germanium detector (Ge HP) for obtaining a high resolution of the measurement. Such a detector must be carefully protected from interference by a shield. The detector 8 is thus placed in a central cavity under air with a lead shielding 9 whose dimensions are much greater than the size of the cavity enclosing the detector 8.
- the shield 9 is traversed by a channel 9b of shape and dimensions, in cross section, identical to those of the longitudinal slot 7a of the collimator 7, arranged in the extension of the slit 7a of the collimator and passing through the entire wall of the collimator. shielding between the cavity 9a of the detector 8 and the face of the shield directed towards the collimator 7.
- the ultra pure germanium detector (Ge HP) must be used at a cryogenic temperature, so that the shielding cavity 9a is cooled to this cryogenic temperature (for example the temperature of the nitrogen atom).
- quide ie 77 ° K
- a compressor 12 connected by a pipe to the central cavity 9a of the shielding 9.
- This choice is one of the characteristics of the method of the invention and determines the characteristics of the device 6 for measuring emission rates and in particular the fast acquisition chain. measurements and the processing software.
- the choice of the isotope of the fission product taken into account for the measurements must take into account that the measurements can be used for different applications as listed above (data for the reprocessing of the fuel, control of the loading sequence , optimization of fuel storage or reloading, etc.).
- fission product isotope lines have been determined in a very precise manner and can be used generally for measurements of the low cooling exhaustion rate but which will be devolved preferentially to the fission product. one of the tasks mentioned above.
- the following tracers of the combustion rate of a fuel assembly recently removed from the core have been selected: - 144 Ce at 2185 keV,
- the assembly is engaged fuel in a system 4 for guiding and displacement, in the longitudinal direction, aligned along the axis of the bundle of the fuel assembly.
- the depletion rate measuring device is placed so that the lower end of the collimator 7 which is immersed in the fuel pool is at a distance which must be determined so as to accommodate the combustion rate (for example 50cm for precise measurements).
- the position of the collimator should be set to 1 mm or 2 mm, relative to the fuel assembly on which the measurement is made, above the upper face of the fuel assembly.
- the ultra-pure germanium detector is placed inside its shield above the level of the swimming pool, in the extension of the collector and connected to the fast data acquisition chain, itself linked to the data acquisition computer. treatment and display results, above the level of the pool.
- the germanium detector is brought to its operating temperature by the cooling compressor 12 and the fuel assembly is placed in such a way that a first measurement zone (for example at a first end of the bundle) is screwed to -vis the guide slot 7a collimator 7. A first measurement is made and then moves accurately the fuel assembly, so that a second measurement zone is in front of the collimator.
- the slot 7a of the collimator 7 is in air, the detector 8 itself being in the air filling the cavity 9a of the shield.
- the fast acquisition chain 10 transmits to the treatment computer 11, successively, the counts carried out in each zone of the fuel assembly.
- the treatment computer 11 uses several software programs to determine the rate of fuel depletion, based on the count of photons emitted by the tracer chosen from one of the tracers mentioned above.
- the computer 11 includes self-attenuation calculation software, that is to say a software for correcting the measurements, according to the attenuation due to the components of the surrounding fuel assembly. the nuclear fuel, in the longitudinal measuring zone on which the count was made.
- the self-attenuation calculation software takes into account the presence of the zirconium alloy tubular sheath around the pellets of fuel material, the elements of the fuel assembly frame (grids and guide tubes) and the geometric arrangement of the rods relative to these elements.
- the calculator 11 also uses a software for calculating the exhaustion rate from the photon count, taking into account the self-attenuation calculations, called the evolution code.
- the determination of the burnout rate of the fuel assembly takes into account all emission rate measurements made along the length of the fuel assembly.
- This provides information that can be used either for the reprocessing of the fuel assembly, to optimize the storage of fuel assemblies in the deactivation pool, or to optimize and control the loading of the reactor core. nuclear.
- depletion rate measurements are used to perform a three-dimensional mapping of the nuclear reactor core depletion rate that can be stored and exploited in a nuclear reactor control system.
- the method according to the invention makes it possible to obtain the rate of exhaustion of a fuel assembly, more rapidly after it has been removed from the core, which makes it possible to improve certain monitoring or control functions. assessment or to implement a new method of monitoring and operating the nuclear reactor.
- the invention is not limited strictly to the embodiment which has been described. It is thus possible to use instead of a measurement of the emission rate of a line of the emission spectrum ⁇ of an isotope, the ratio of the emission rates ⁇ of two lines two isotopes of the fission products, for example the ratio 134 Cs / 137 Cs, in certain types of application.
- the thickness of the water layer under which the fuel assembly is immersed during the measurements which may be about 50 cm for a poorly cooled assembly (for example after a cooling time of fifteen days), may be significantly lower in the case of a more cooled assembly (for example following a cooling of thirty days).
- the invention applies to any fuel assembly comprising a bundle of fuel rods parallel to each other and containing at least one nuclear fuel among uranium oxide and plutonium oxide.
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- General Engineering & Computer Science (AREA)
- High Energy & Nuclear Physics (AREA)
- Monitoring And Testing Of Nuclear Reactors (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB0712295A GB2435785B (en) | 2004-12-28 | 2005-12-15 | Method and device for determining the combustion rate of a nuclear reactor fuel assembly and use thereof |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0413991A FR2880179B1 (fr) | 2004-12-28 | 2004-12-28 | Procede et dispositif de determination du taux de combustion d'un assemblage de combustible du coeur d'un reacteur nucleaire et utilisation |
FR0413991 | 2004-12-28 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2006070091A1 true WO2006070091A1 (fr) | 2006-07-06 |
Family
ID=34952360
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FR2005/003158 WO2006070091A1 (fr) | 2004-12-28 | 2005-12-15 | Procede et dispositif de determination du taux de combustion d'un assemblage de combustible du coeur d'un reacteur nucleaire et utilisation |
Country Status (3)
Country | Link |
---|---|
FR (1) | FR2880179B1 (fr) |
GB (1) | GB2435785B (fr) |
WO (1) | WO2006070091A1 (fr) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ES2351020B1 (es) * | 2009-06-08 | 2011-11-18 | Enusa Industrias Avanzadas S.A. | Escaner para el analisis de una barra de combustible nuclear. |
ES2350997B1 (es) * | 2009-06-08 | 2011-11-23 | Enusa Industrias Avanzadas S.A. | Aparato para la inspeccion radiometrica de un elemento combustible |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3717765A (en) * | 1970-04-04 | 1973-02-20 | Siemens Ag | Device for non-destructive consumption testing of reactor fuel elements |
EP0280925A1 (fr) * | 1987-02-25 | 1988-09-07 | Westinghouse Electric Corporation | Procédé et appareil pour balayer gamma passivement un élément crayon combustible nucléaire |
JPH03238399A (ja) * | 1990-02-15 | 1991-10-24 | Toshiba Corp | 原子燃料の燃焼度測定方法 |
FR2752639A1 (fr) * | 1996-08-23 | 1998-02-27 | Commissariat Energie Atomique | Dispositif de caracterisation individuelle d'assemblages de combustible nucleaire et installation de controle non destructif comprenant un tel dispositif |
WO1998016935A1 (fr) * | 1996-10-15 | 1998-04-23 | European Atomic Energy Community (Euratom) | Appareil de mesure permettant de mesurer le spectre gamma et les neutrons emis par un objet tel qu'un combustible epuise |
US6380544B1 (en) * | 2000-03-21 | 2002-04-30 | Perkinelmer, Inc. | Germanium gamma-ray detector |
-
2004
- 2004-12-28 FR FR0413991A patent/FR2880179B1/fr not_active Expired - Fee Related
-
2005
- 2005-12-15 WO PCT/FR2005/003158 patent/WO2006070091A1/fr active Application Filing
- 2005-12-15 GB GB0712295A patent/GB2435785B/en not_active Expired - Fee Related
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3717765A (en) * | 1970-04-04 | 1973-02-20 | Siemens Ag | Device for non-destructive consumption testing of reactor fuel elements |
EP0280925A1 (fr) * | 1987-02-25 | 1988-09-07 | Westinghouse Electric Corporation | Procédé et appareil pour balayer gamma passivement un élément crayon combustible nucléaire |
JPH03238399A (ja) * | 1990-02-15 | 1991-10-24 | Toshiba Corp | 原子燃料の燃焼度測定方法 |
FR2752639A1 (fr) * | 1996-08-23 | 1998-02-27 | Commissariat Energie Atomique | Dispositif de caracterisation individuelle d'assemblages de combustible nucleaire et installation de controle non destructif comprenant un tel dispositif |
WO1998016935A1 (fr) * | 1996-10-15 | 1998-04-23 | European Atomic Energy Community (Euratom) | Appareil de mesure permettant de mesurer le spectre gamma et les neutrons emis par un objet tel qu'un combustible epuise |
US6380544B1 (en) * | 2000-03-21 | 2002-04-30 | Perkinelmer, Inc. | Germanium gamma-ray detector |
Non-Patent Citations (2)
Title |
---|
DATABASE WPI Section Ch Week 199042, Derwent World Patents Index; Class K08, AN 1990-280579, XP002342925 * |
PATENT ABSTRACTS OF JAPAN vol. 016, no. 024 (P - 1301) 21 January 1992 (1992-01-21) * |
Also Published As
Publication number | Publication date |
---|---|
GB2435785A (en) | 2007-09-05 |
FR2880179A1 (fr) | 2006-06-30 |
FR2880179B1 (fr) | 2007-02-23 |
GB2435785B (en) | 2008-03-19 |
GB0712295D0 (en) | 2007-08-01 |
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