ES2620783T3 - Passive Tritium Extraction Device - Google Patents
Passive Tritium Extraction Device Download PDFInfo
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- ES2620783T3 ES2620783T3 ES13760009.4T ES13760009T ES2620783T3 ES 2620783 T3 ES2620783 T3 ES 2620783T3 ES 13760009 T ES13760009 T ES 13760009T ES 2620783 T3 ES2620783 T3 ES 2620783T3
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- G21F—PROTECTION AGAINST X-RADIATION, GAMMA RADIATION, CORPUSCULAR RADIATION OR PARTICLE BOMBARDMENT; TREATING RADIOACTIVELY CONTAMINATED MATERIAL; DECONTAMINATION ARRANGEMENTS THEREFOR
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Abstract
Dispositivo (100) de extracción de tritio presente en un entorno gaseoso, que comprende: - un depósito (110) en comunicación fluídica con el entorno gaseoso que comprende unas paredes laterales simétricas alrededor de un eje del depósito, y - una cantidad de material adsorbente (120), dispuesta en el interior de dicho depósito, adaptada para adsorber el tritio contenido en el entorno gaseoso, comprendiendo el dispositivo (100) por lo menos una abertura de comunicación (131) fluídica entre el depósito y el entorno gaseoso, estando el dispositivo caracterizado por que comprende además una pared permeable (140) dispuesta en el interior del depósito (110), y por que: - la geometría de la abertura de comunicación (131) fluídica está adaptada, en función de la duración de la extracción, para que la cantidad de material adsorbente no esté saturada al final de la extracción, y - el material adsorbente (120) está conformado de manera que presente una superficie de intercambio de revolución con el entorno gaseoso, estando dispuesto entre las paredes laterales del depósito (110) y la pared permeable, definiendo dicha pared permeable (140) la superficie de intercambio entre el material adsorbente y el entorno gaseoso.Tritium extraction device (100) present in a gaseous environment, comprising: - a reservoir (110) in fluid communication with the gaseous environment comprising symmetrical side walls around an axis of the reservoir, and - a quantity of adsorbent material (120), arranged inside said tank, adapted to adsorb the tritium contained in the gaseous environment, the device (100) comprising at least one fluidic communication opening (131) between the tank and the gaseous environment, the device characterized in that it also comprises a permeable wall (140) arranged inside the reservoir (110), and in that: - the geometry of the fluidic communication opening (131) is adapted, depending on the duration of extraction, so that the amount of adsorbent material is not saturated at the end of the extraction, and - the adsorbent material (120) is shaped so as to present a surface for exchange of revolution with the gaseous environment, being arranged between the side walls of the reservoir (110) and the permeable wall, said permeable wall (140) defining the exchange surface between the adsorbent material and the gaseous environment.
Description
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DESCRIPCIONDESCRIPTION
Dispositivo de extraccion pasiva de tritio.Passive tritium extraction device.
Campo de la invencionField of the Invention
La invencion se refiere al estudio y al seguimiento de los radionucleidos en el medioambiente, y en particular a los dispositivos de captacion y de medicion de una cantidad de tritio contenida en el aire.The invention relates to the study and monitoring of radionuclides in the environment, and in particular to the collection and measurement devices of an amount of tritium contained in the air.
Estado de la tecnicaState of the art
El tritio es el isotopo radioactivo del hidrogeno que comprende tres nucleones (un proton y dos neutrones). Esta representado por el sfmbolo qufmico T, y se presenta en el medioambiente en tres formas qufmicas:Tritium is the radioactive isotope of hydrogen that comprises three nucleons (one proton and two neutrons). It is represented by the chemical symbol T, and is presented in the environment in three chemical forms:
- agua tritiada, HTO, forma la mas abundante,- tritiated water, HTO, forms the most abundant,
- el tritio gaseoso, HT,- gaseous tritium, HT,
- el tritio organico, anotado OBT, que puede aparecer tras unos intercambios medioambientales o unas reacciones metabolicas de seres vivos.- the organic tritium, noted OBT, which may appear after environmental exchanges or metabolic reactions of living beings.
Como la cantidad de tritio en el medioambiente ha aumentado con el desarrollo de la utilizacion de la energfa nuclear, existe una necesidad creciente de analizar su concentracion y su comportamiento, en particular en la atmosfera.As the amount of tritium in the environment has increased with the development of the use of nuclear energy, there is a growing need to analyze its concentration and behavior, particularly in the atmosphere.
Se conocen ya unos dispositivos de captacion de tritio contenido en el aire, vease el documento EP 0 383 049 A1. Se conocen en particular unos dispositivos, denominados mezcladores, de los cuales un ejemplo 10 esta ilustrado esquematicamente en la figura 1, que comprenden unos depositos rellenos de agua 11 en los que se inyecta un flujo de aire F a muy bajo caudal -del orden de 30 litros por hora de promedio- en un periodo largo de varios dfas. El tritio contenido en el aire es captado por intercambio en el agua contenida en los diferentes depositos 11. Se analiza despues para obtener una indicacion de la actividad media del tritio en el aire durante el periodo de extraccion.Tritium capture devices contained in the air are already known, see EP 0 383 049 A1. Particularly known are devices, called mixers, of which an example 10 is schematically illustrated in Figure 1, comprising water-filled reservoirs 11 in which a flow of air F is injected at a very low flow rate - of the order of 30 liters per hour on average - over a long period of several days. The tritium contained in the air is captured by exchange in the water contained in the different deposits 11. It is then analyzed to obtain an indication of the average activity of the tritium in the air during the extraction period.
Este dispositivo adolece no obstante de inconvenientes. En primer lugar, se trata de un dispositivo "activo", es decir que necesita una aportacion de energfa permanente, lo cual representa una obligacion material. Este dispositivo es tambien costoso y necesita unas intervenciones de mantenimiento.This device suffers, however, from inconveniences. In the first place, it is an "active" device, that is, it needs a permanent energy contribution, which represents a material obligation. This device is also expensive and needs maintenance interventions.
Ademas, la cantidad de tritio contenida en el vapor de agua inicialmente presente en el aire esta muy diluida ya que esta mezclada con el volumen de agua contenido en los depositos, limitando esta dilucion la sensibilidad de la medicion.In addition, the amount of tritium contained in the water vapor initially present in the air is very diluted since it is mixed with the volume of water contained in the tanks, this dilution limiting the sensitivity of the measurement.
Se ha desarrollado otro tipo de dispositivo de captacion de tritio, ilustrado esquematicamente en la figura 2, que consiste en condensar vapor de agua contenido en el aire, para recuperar el tritio presente en el aire en forma de agua tritiada. Este dispositivo 20 es un sistema abierto que comprende una canalizacion 21 que se sumerge en el aire ambiente representado en forma de flujo de aire F, en la que circula un gas g licuado a una temperatura negativa, y en la que se condensa el vapor de agua presente en el aire en contacto con la canalizacion. El dispositivo comprende ademas una ventilacion 22 para asegurar la renovacion del aire ambiente cerca de la canalizacion. Se puede recuperar, al final de la extraccion, el agua condensada Ec para analizar la cantidad de tritio que contiene.Another type of tritium collection device has been developed, schematically illustrated in Figure 2, which consists of condensing water vapor contained in the air, to recover the tritium present in the air in the form of tritiated water. This device 20 is an open system comprising a duct 21 that is immersed in the ambient air represented in the form of an air flow F, in which a liquefied gas g circulates at a negative temperature, and in which the steam of condensation is condensed. water present in the air in contact with the pipe. The device also comprises a vent 22 to ensure the renewal of the ambient air near the pipe. At the end of the extraction, the condensed water Ec can be recovered to analyze the amount of tritium it contains.
Este dispositivo permite realizar unas extracciones de aire en periodos mas cortos (menos de una hora), y por lo tanto no permite obtener un valor de promedio de la cantidad de tritio presente en el aire sobre periodos del orden de una semana o mas.This device allows to perform air extractions in shorter periods (less than one hour), and therefore does not allow to obtain an average value of the amount of tritium present in the air over periods of the order of a week or more.
Este dispositivo adolece de los inconvenientes de ser un sistema activo, costoso de utilizar y diffcil de colocar.This device suffers from the disadvantages of being an active system, expensive to use and difficult to place.
Se conoce tambien, en referencia a la figura 3, otro dispositivo de extraccion de tritio. Este dispositivo es pasivo, es decir que no requiere ninguna fuente de energfa. Comprende un deposito 31 en cuyo interior se coloca un cilindro de material adsorbente 32, adaptado para extraer tritio contenido en el aire por adsorcion.Another reference device for tritium extraction is also known. This device is passive, that is, it does not require any source of energy. It comprises a tank 31 inside which a cylinder of adsorbent material 32 is placed, adapted to extract tritium contained in the air by adsorption.
Sin embargo, este dispositivo no presenta la misma eficacia de extraccion del tritio durante todo el tiempo de la extraccion. En efecto, el material adsorbente consigue rapidamente, despues de un periodo de tres a cuatro dfas, un estado de saturacion en las capas superficiales del material adsorbente, en contacto con el medioambiente. Esto impide utilizar los resultados para deducir una actividad media de tritio en el medioambiente durante un periodo de extraccion que supera el tiempo lfmite de saturacion, tfpicamente de 15 dfas.However, this device does not have the same efficiency of tritium extraction during the entire time of extraction. In fact, the adsorbent material quickly achieves, after a period of three to four days, a state of saturation in the surface layers of the adsorbent material, in contact with the environment. This prevents the use of the results to deduce an average activity of tritium in the environment during an extraction period that exceeds the limit saturation time, typically 15 days.
Por lo tanto, existe una necesidad para un dispositivo de extraccion de tritio que permita un muestreo del tritioTherefore, there is a need for a tritium extraction device that allows tritium sampling
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representative de su concentracion atmosferica en el medioambiente vigilado, durante un periodo de extraccion que puede variar de 1 a 20 dfas mmimo, y que permita tambien recuperar suficientemente agua tritiada al final de la extraccion para un analisis radiologico por centelleo.representative of its atmospheric concentration in the monitored environment, during a period of extraction that can vary from 1 to 20 days minimum, and that also allows recovering enough tritiated water at the end of the extraction for a radiological analysis by scintillation.
Presentacion de la invencionPresentation of the invention
La invencion tiene como objetivo paliar por lo menos uno de los inconvenientes citados anteriormente.The invention aims to alleviate at least one of the drawbacks mentioned above.
Un objetivo de la invencion es asf proponer un dispositivo pasivo de extraccion de tritio en un entorno gaseoso, que permite obtener un valor de la actividad media del tritio durante toda la extraccion.An objective of the invention is thus to propose a passive tritium extraction device in a gaseous environment, which allows obtaining a value of the average activity of tritium during the entire extraction.
Otro objetivo de la invencion es proponer un dispositivo de extraccion de tritio economico, facil y rapido de instalar en un entorno.Another objective of the invention is to propose an economical tritium extraction device, easy and quick to install in an environment.
A este respecto, la invencion propone un dispositivo de extraccion de tritio presente en un entorno gaseoso segun la reivindicacion 1.In this regard, the invention proposes a tritium extraction device present in a gaseous environment according to claim 1.
Otros modos de realizacion se describen en las reivindicaciones dependientes.Other embodiments are described in the dependent claims.
La invencion propone tambien un procedimiento de extraccion de tritio en un entorno gaseoso segun la reivindicacion 9.The invention also proposes a tritium extraction process in a gaseous environment according to claim 9.
Breve descripcion de las figurasBrief description of the figures
Otras caractensticas, objetivos y ventajas de la presente invencion apareceran con la lectura de la descripcion detallada siguiente, en referencia a las figuras adjuntas, dadas a tttulo de ejemplos no limitativos y en las que:Other features, objectives and advantages of the present invention will appear upon reading the following detailed description, in reference to the attached figures, given by way of non-limiting examples and in which:
- la figura 1, ya descrita, representa esquematicamente, un dispositivo de captacion de tritio de la tecnica anterior, denominado mezclador,- Figure 1, already described, schematically represents a tritium capture device of the prior art, called a mixer,
- la figura 2, ya descrita, representa esquematicamente, un dispositivo de captacion de tritio de la tecnica anterior por condensacion,- Figure 2, already described, schematically represents a tritium collection device of the prior art by condensation,
- la figura 3, ya descrita, representa esquematicamente, un dispositivo pasivo de captacion de tritio de la tecnica anterior,- Figure 3, already described, schematically represents a passive tritium collection device of the prior art,
- las figuras 4a, 4b y 4c representan unas vistas en seccion transversal de tres modos de realizacion de un dispositivo de extraccion de tritio segun la invencion,- Figures 4a, 4b and 4c represent cross-sectional views of three embodiments of a tritium extraction device according to the invention,
- las figuras 5a a 5e representan varios modos de realizacion de tapas de un dispositivo de extraccion segun la invencion,- Figures 5a to 5e represent various ways of making covers of an extraction device according to the invention,
- la figura 6 representa la masa de agua adsorbida por un dispositivo segun la invencion durante el tiempo de extraccion,- Figure 6 represents the mass of water adsorbed by a device according to the invention during the extraction time,
- las figuras 7a y 7b representan, respectivamente, la disposicion y los resultados obtenidos para un modo de realizacion particular del dispositivo de extraccion.- Figures 7a and 7b represent, respectively, the arrangement and the results obtained for a particular embodiment of the extraction device.
Descripcion detallada de un modo de realizacion de la invencionDetailed description of an embodiment of the invention
En las figuras 4a a 4b, se han representado unos modos de realizacion de un dispositivo pasivo 100 de extraccion de tritio en un entorno gaseoso E.In Figures 4a to 4b, embodiments of a passive device 100 for tritium extraction in a gaseous environment E. are shown.
Un dispositivo de este tipo comprende un deposito 110, en comunicacion flmdica con el entorno E, de manera que una vez el dispositivo dispuesto en el entorno E, una parte E' de este se encuentre en el interior del deposito.Such a device comprises a tank 110, in fluid communication with the environment E, so that once the device arranged in the environment E, a part E 'of this is inside the tank.
En el deposito 110 se coloca una cantidad de material adsorbente 120. El material adsorbente comprende preferentemente zeolita (tamiz molecular) en bolas, pero puede comprender, alternativamente, gel de sflice o carbon activo.An amount of adsorbent material 120 is placed in the reservoir 110. The adsorbent material preferably comprises ball zeolite (molecular sieve), but may alternatively comprise silica gel or active carbon.
Este material, cuando esta en contacto con el entorno gaseoso E' en el interior del dispositivo 100, permite adsorber el tritio contenido en este.This material, when in contact with the gaseous environment E 'inside the device 100, allows adsorbing the tritium contained therein.
El dispositivo 100 comprende muy ventajosamente una membrana o una tapa 130 aplicada sobre el deposito 110, en la que estan dispuestas una o varias aberturas de comunicacion 131, que permiten la comunicacion flmdica entre el entorno E y el deposito 110.The device 100 very advantageously comprises a membrane or a lid 130 applied on the tank 110, in which one or more communication openings 131 are arranged, which allow the fluid communication between the environment E and the tank 110.
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Esta comunicacion flufdica puede tambien ser realizada mediante la utilizacion de una membrana porosa (no representada) dispuesta sobre el deposito, que permite unos intercambios gaseosos entre el deposito y el entorno E.This fluidic communication can also be carried out through the use of a porous membrane (not shown) disposed on the tank, which allows gaseous exchanges between the tank and the environment E.
La solicitante ha constatado, de manera sorprendente, que un fenomeno de saturacion del material adsorbente durante la extraccion se puede evitar adaptando la geometrfa de la o de las aberturas de comunicacion 131, al mismo tiempo en superficie total acumulada, en posicion o disposicion de las aberturas.The applicant has found, surprisingly, that a phenomenon of saturation of the adsorbent material during extraction can be avoided by adapting the geometry of the communication opening (s) 131, at the same time as the total accumulated surface, in position or arrangement of the openings
En efecto, cuanto mas importante sea la superficie de intercambio con la atmosfera, mas elevado es el porcentaje de captacion para una masa de media de captacion dada.Indeed, the more important the surface of exchange with the atmosphere, the higher the percentage of uptake for a given average mass of uptake.
Asf, para un tiempo de extraccion de aproximadamente 10 dfas, la superficie total de la abertura de comunicacion 131 entre el dispositivo y el entorno es preferentemente inferior a 600 mm2, y muy ventajosamente inferior a 200 mm2, para poder asegurar una extraccion lineal en toda su duracion.Thus, for an extraction time of approximately 10 days, the total area of the communication opening 131 between the device and the environment is preferably less than 600 mm2, and very advantageously less than 200 mm2, in order to ensure a linear extraction throughout its duration.
En referencia a la figura 5, se han representado unos modos de realizacion preferidos de disposiciones de una pluralidad de aberturas de comunicacion 131 sobre una tapa 130 aplicada sobre el deposito 110.Referring to Figure 5, preferred embodiments of arrangements of a plurality of communication openings 131 on a cover 130 applied on the tank 110 have been shown.
La tapa 130 es preferentemente circular, y el deposito 110 presenta ventajosamente unas paredes laterales 111 simetricas alrededor de un eje X-X del deposito, estando la tapa centrada sobre dicho eje. El deposito 110 puede ser un solido de revolucion alrededor de dicho eje.The lid 130 is preferably circular, and the reservoir 110 advantageously has symmetrical side walls 111 about an X-X axis of the reservoir, the lid being centered on said axis. The tank 110 may be a solid of revolution around said axis.
En el caso de una unica abertura de comunicacion 131 sobre la tapa 130, esta abertura es preferentemente circular y esta centrada en el eje X-X, como se representa en la figura 5a.In the case of a single communication opening 131 on the cover 130, this opening is preferably circular and centered on the X-X axis, as shown in Figure 5a.
Si se preven varias aberturas de comunicacion 131, dicha aberturas son ventajosamente circulares y estan posicionadas en el vertice de un polfgono regular centrado en el eje X-X, como el pentagono representado en la figura 5b.If several communication openings 131 are provided, said openings are advantageously circular and are positioned at the apex of a regular polygon centered on the X-X axis, such as the pentagon shown in Figure 5b.
Una abertura suplementaria puede estar situada tambien en el centro de la tapa 130 como en la figura 5c.A supplementary opening may also be located in the center of the lid 130 as in Figure 5c.
Unas aberturas suplementarias pueden estar situadas tambien en los centros de uno o varios lados del polfgono. En la figura 5d, el polfgono es un cuadrado, del cual todos los lados presentan una abertura en su centro.Supplementary openings may also be located in the centers of one or more sides of the polygon. In Figure 5d, the polygon is a square, of which all sides have an opening in its center.
Unas aberturas suplementarias pueden estar previstas tambien sobre una o varias diagonales del polfgono, de manera que las aberturas de dicha diagonal esten regularmente repartidas, como es el caso en la figura 5e.Supplementary openings can also be provided on one or several diagonals of the polygon, so that the openings of said diagonal are regularly distributed, as is the case in Figure 5e.
Las aberturas pueden estar repartidas tambien de manera aleatoria o en espiral sobre la tapa.The openings can also be distributed randomly or spirally over the lid.
Ventajosamente, todas las aberturas dispuestas en una tapa 130 son circulares y de igual diametro. El numero de las aberturas y su diametro estan adaptados para obtener una superficie acumulada inferior a 400 mm2, por ejemplo, en el caso de una extraccion de una duracion comprendida entre 2 y 10 dfas.Advantageously, all openings arranged in a lid 130 are circular and of equal diameter. The number of openings and their diameter are adapted to obtain a cumulative surface area less than 400 mm2, for example, in the case of an extraction with a duration between 2 and 10 days.
En el caso de una extraccion de 20 dfas, la superficie acumulada de las aberturas es ventajosamente inferior a 200 mm2, preferentemente inferior a 190 mm2.In the case of an extraction of 20 days, the accumulated surface of the openings is advantageously less than 200 mm2, preferably less than 190 mm2.
En el caso en el que el dispositivo de extraccion deba ser utilizado para una duracion mas corta, por ejemplo inferior a 2 dfas, la superficie acumulada de las aberturas podra ser superior a 400 mm2, ventajosamente superior a 1000 mm2.In the case where the extraction device must be used for a shorter duration, for example less than 2 days, the accumulated surface of the openings may be greater than 400 mm2, advantageously greater than 1000 mm2.
Ademas, y volviendo a las figuras 4a y 4b, la solicitante ha constatado tambien, de manera sorprendente, que el hecho de que el material adsorbente sea conformado en el deposito de manera que presente una superficie de intercambio de revolucion con el entorno gaseoso E' presente en el deposito, contribuye a evitar un estado de saturacion del adsorbente.In addition, and returning to Figures 4a and 4b, the applicant has also found, surprisingly, that the fact that the adsorbent material is formed in the tank so that it presents a surface of exchange of revolution with the gaseous environment E ' present in the tank, it helps to avoid a state of saturation of the adsorbent.
El material presenta una superficie de intercambio de revolucion alrededor del eje X-X del deposito, pudiendo esta superficie de intercambio ser cilfndrica, como en la figura 4a, o conica, como en la figura 4b. La superficie de intercambio puede tambien presentar una forma de tronco de cono, como en la figura 4c.The material has a revolution exchange surface around the X-X axis of the tank, this exchange surface being cylindrical, as in Figure 4a, or conical, as in Figure 4b. The exchange surface may also have a cone trunk shape, as in Figure 4c.
Para obtener el aguante en forma del material adsorbente, se utiliza una pared permeable 140, pegada contra el material adsorbente de manera que este se encuentre mantenido entre las paredes del deposito y la pared. La forma de la superficie de intercambio del material adsorbente con el entorno E' esta asf definida por la pared permeable 140.To obtain the resistance in the form of the adsorbent material, a permeable wall 140 is used, glued against the adsorbent material so that it is maintained between the walls of the reservoir and the wall. The shape of the exchange surface of the adsorbent material with the environment E 'is thus defined by the permeable wall 140.
En el caso en el que el material adsorbente seleccionado es granular, como por ejemplo el tamiz molecular de bolas, la pared 140 es ventajosamente una rejilla cuyo tamano caracterfstico de los orificios es inferior al tamanoIn the case where the selected adsorbent material is granular, such as the molecular ball sieve, the wall 140 is advantageously a grid whose characteristic size of the holes is smaller than the size
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caracterfstico de los granos del material adsorbente.characteristic of the grains of the adsorbent material.
Se prefiere la geometrfa en tronco de cono de acuerdo con la figura 4c, ya que permite asegurar la linealidad de la extraccion, incluso en condiciones de humedad importante, hasta 90%.Cone trunk geometry according to figure 4c is preferred, since it allows to ensure the linearity of the extraction, even in conditions of significant humidity, up to 90%.
A tftulo de ejemplo, el experimento se ha llevado a cabo con la geometrfa en tronco de cono de la figura 7a, en la que el diametro de la seccion de cono en la base es de 4 cm, en su extremo superior, a nivel de la abertura 131, es de 7,5 cm, y la altura del cono es de 10 cm.As an example, the experiment has been carried out with the cone trunk geometry of Figure 7a, in which the diameter of the cone section at the base is 4 cm, at its upper end, at the level of the opening 131 is 7.5 cm, and the height of the cone is 10 cm.
Se ha medido, en referencia a la figura 7b, que la extraccion es lineal en una duracion de 20 dfas, ya sea para un material adsorbente de tipo gel de sflice (D-1) o de tipo tamiz molecular (D-2).It has been measured, in reference to Figure 7b, that the extraction is linear in a duration of 20 days, either for a silica gel type adsorbent material (D-1) or molecular sieve type (D-2).
Los dos dispositivos presentan respectivamente un porcentaje de extraccion de 2,0 ± 0,1 g EhOdfa"1 y de 0,3 ± 0,1 g EhOdfa"1. Esto permite tambien asegurar una extraccion suficiente de agua tritiada, incluso para una duracion corta, por ejemplo de 24h, en particular en caso de crisis.The two devices respectively have an extraction percentage of 2.0 ± 0.1 g EhOdfa "1 and 0.3 ± 0.1 g EhOdfa" 1. This also allows to ensure a sufficient extraction of tritiated water, even for a short duration, for example 24 hours, in particular in case of crisis.
Segun un modo de realizacion preferido del dispositivo de extraccion de tritio, se utiliza un material adsorbente de tipo tamiz molecular (por ejemplo zeolita) dispuesto segun una geometrfa troncoconica como la de la figura 4c. La superficie acumulada de las aberturas 131 de la tapa es igual a 250 mm2.According to a preferred embodiment of the tritium extraction device, a molecular sieve-type adsorbent material (eg zeolite) arranged according to a truncated cone geometry such as that of Figure 4c is used. The accumulated surface of the openings 131 of the cover is equal to 250 mm2.
Los resultados obtenidos gracias a este modo de realizacion estan ilustrados en la figura 6. Se constata que permiten obtener unas mediciones lineales durante un periodo de extraccion de 20 dfas (siendo la linealidad deducida de la masa del material adsorbente durante toda la extraccion), a una temperatura de 22°C y con un porcentaje de humedad relativa de 50%.The results obtained thanks to this embodiment are illustrated in Figure 6. It is found that they allow linear measurements to be obtained during an extraction period of 20 days (the linearity being deduced from the mass of the adsorbent material during the entire extraction), a a temperature of 22 ° C and with a relative humidity percentage of 50%.
Para realizar la extraccion, se determina en primer lugar una duracion de extraccion deseada, por ejemplo 2, 10 o 15 dfas. Para esta duracion de extraccion, se selecciona la geometrfa de las aberturas de comunicacion 131 (en disposicion y en superficie acumulada) como se ha indicado anteriormente, y se selecciona una forma para el material adsorbente (cono, tronco de cono o cilindro).To perform the extraction, a desired extraction duration is determined first, for example 2, 10 or 15 days. For this duration of extraction, the geometry of the communication openings 131 (in arrangement and in accumulated surface) is selected as indicated above, and a shape for the adsorbent material (cone, cone trunk or cylinder) is selected.
Despues, se coloca el dispositivo en el entorno para toda la duracion de la extraccion. Al final de la extraccion, el material adsorbente no llego a saturacion, sino que por el contrario ha adsorbido de manera lineal el tritio presente en el entorno. Se puede por lo tanto deducir de la cantidad total de tritio adsorbida durante la extraccion una cantidad media de tritio presente en el entorno durante esta extraccion.Then, the device is placed in the environment for the entire duration of the extraction. At the end of the extraction, the adsorbent material did not reach saturation, but instead has linearly adsorbed the tritium present in the environment. Therefore, an average amount of tritium present in the environment during this extraction can be deduced from the total amount of tritium adsorbed during extraction.
Claims (9)
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR1258303 | 2012-09-05 | ||
| FR1258303A FR2994860B1 (en) | 2012-09-05 | 2012-09-05 | PASSIVE TRITIUM SAMPLING DEVICE |
| PCT/EP2013/068400 WO2014037461A1 (en) | 2012-09-05 | 2013-09-05 | Passive tritium sampling device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| ES2620783T3 true ES2620783T3 (en) | 2017-06-29 |
Family
ID=47666203
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ES13760009.4T Active ES2620783T3 (en) | 2012-09-05 | 2013-09-05 | Passive Tritium Extraction Device |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP2893539B1 (en) |
| CA (1) | CA2884228C (en) |
| ES (1) | ES2620783T3 (en) |
| FR (1) | FR2994860B1 (en) |
| WO (1) | WO2014037461A1 (en) |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3986835A (en) * | 1971-11-27 | 1976-10-19 | Sinloihi Company Limited | Ventilation hood for use in the preparation of labelled compounds |
| US4964900A (en) * | 1989-01-25 | 1990-10-23 | Mine Safety Appliances Company | Respirator filter means for removal of tritiated water |
| US5080693A (en) * | 1991-03-26 | 1992-01-14 | The United States Of America As Represented By The United States Department Of Energy | Tritium monitor and collection system |
| FR2985437A1 (en) * | 2012-01-10 | 2013-07-12 | Alstom Technology Ltd | PROCESS FOR FILTRATION OF GASEOUS EFFLUENTS OF AN INDUSTRIAL PLANT |
-
2012
- 2012-09-05 FR FR1258303A patent/FR2994860B1/en not_active Expired - Fee Related
-
2013
- 2013-09-05 ES ES13760009.4T patent/ES2620783T3/en active Active
- 2013-09-05 EP EP13760009.4A patent/EP2893539B1/en active Active
- 2013-09-05 WO PCT/EP2013/068400 patent/WO2014037461A1/en active Application Filing
- 2013-09-05 CA CA2884228A patent/CA2884228C/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CA2884228A1 (en) | 2014-03-13 |
| WO2014037461A1 (en) | 2014-03-13 |
| EP2893539A1 (en) | 2015-07-15 |
| FR2994860B1 (en) | 2014-08-22 |
| EP2893539B1 (en) | 2017-01-18 |
| CA2884228C (en) | 2020-09-22 |
| FR2994860A1 (en) | 2014-03-07 |
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