EP0307284B1 - System zum Abbau von in einem Raum vorhandenen Anlagen und Verfahren zu seiner Durchführung - Google Patents

System zum Abbau von in einem Raum vorhandenen Anlagen und Verfahren zu seiner Durchführung Download PDF

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Publication number
EP0307284B1
EP0307284B1 EP19880402190 EP88402190A EP0307284B1 EP 0307284 B1 EP0307284 B1 EP 0307284B1 EP 19880402190 EP19880402190 EP 19880402190 EP 88402190 A EP88402190 A EP 88402190A EP 0307284 B1 EP0307284 B1 EP 0307284B1
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EP
European Patent Office
Prior art keywords
hood
gas
confinement zone
dismantling
building
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.)
Expired - Lifetime
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EP19880402190
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English (en)
French (fr)
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EP0307284A1 (de
Inventor
Jean-Claude Poirier
Philippe Mulcey
Paul Morel
Camille Vavasseur
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Commissariat a lEnergie Atomique et aux Energies Alternatives CEA
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Commissariat a lEnergie Atomique CEA
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Publication of EP0307284A1 publication Critical patent/EP0307284A1/de
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    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21F—PROTECTION AGAINST X-RADIATION, GAMMA RADIATION, CORPUSCULAR RADIATION OR PARTICLE BOMBARDMENT; TREATING RADIOACTIVELY CONTAMINATED MATERIAL; DECONTAMINATION ARRANGEMENTS THEREFOR
    • G21F9/00—Treating radioactively contaminated material; Decontamination arrangements therefor
    • G21F9/28—Treating solids
    • G21F9/30—Processing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/02—Ducting arrangements
    • F24F13/06—Outlets for directing or distributing air into rooms or spaces, e.g. ceiling air diffuser
    • F24F2013/0616—Outlets that have intake openings

Definitions

  • the subject of the present invention is a system for dismantling installations, and in particular nuclear installations, located in a room which can be placed under vacuum thanks to a ventilation system.
  • a system for collecting fumes and combustion products is described in US-A-3,834,293. Such a system comprises in combination hood, filter, fan and regulator.
  • the dismantling of nuclear installations is distinguished from the dismantling of conventional industrial installations by the fact that the buildings or installations to be destroyed contain a large quantity of radioactive materials which are either deposited on surfaces (volatile compounds or aerosols produced by the processes used) is present in the structures due to the irradiation that the latter have undergone (activation products).
  • the operating conditions currently adopted make it possible to install, inside the room to be dismantled, the cutting tools to be used (chainsaw, saw, plasma arc torch, laser, etc.) as well as the remote control means necessary for their implementation (remote handling arms, cameras, ). Handling and disposal problems are generally dealt with using the installation's own resources (remote manipulators, existing openings, etc.). On the other hand, contamination due to radioactive aerosols produced during cutting operations cannot be specifically treated for two main reasons.
  • the purification of the radioactive aerosols thus suspended is carried out by means of filtration devices specific to the room considered. These devices filtration therefore risk quickly reaching clogging and / or irradiation levels such that it is necessary to renew them often. Since renewal operations present a certain number of difficulties, they are long, which lengthens the duration of the dismantling operations themselves.
  • the present invention aims to remedy the above drawbacks by proposing a system for dismantling installations, and in particular nuclear installations, which makes it possible to considerably reduce the contamination caused by the dismantling operations themselves and which can be used when the room ventilation system is off.
  • the subject of the invention is a system for dismantling installations present in a room which can be maintained under vacuum, or possibly overpressure, by means of a ventilation system, the dismantling being carried out using at least a tool causing pollution of the atmosphere prevailing in the vicinity of said installations.
  • causing air pollution means that the implementation of the dismantling tool (s) leads to the production and dissemination around the installations to be treated of harmful substances such as radioactive aerosols, toxic vapors, or dangerous gases and / or contaminants.
  • the means comprise second gas blowing means, placed below the pollution-generating tool, consisting of a crown, so as to create an ascending gas curtain and surrounding the 'tool, thus participating in the creation of said dynamic confinement zone.
  • the hood comprises, all along its periphery, a first double wall defining a space communicating with the interior of the room, said first blowing means being arranged so as to inject gas into this space.
  • the dismantling system which is the subject of the invention, it comprises at least one curtain fixed to the periphery of the hood and surrounding said dynamic confinement zone.
  • a second curtain fixed to the periphery of the hood so as to define a space between the two curtains, this space surrounding the dynamic confinement zone and the blowing means being arranged so as to inject gas into the space thus created.
  • These curtains can be made for example of vinyl.
  • the mechanical frame can be provided mobile and displaceable using handling means, for example a bridge rolling.
  • This heavy element can be a shield.
  • the invention also relates to a hood which can be used to create a dynamic confinement zone, this hood having the characteristics indicated above.
  • FIG. 1 shows the room 10 containing nuclear installations, the installations to be dismantled being located in an area 12 shown diagrammatically in the form of a hatched circle.
  • the ventilation system of the room intended to maintain the latter in depression, comprises an air inlet pipe 14 equipped with a fan 16 and an extraction pipe 18 equipped with a fan 20.
  • the pipes 14 and 18 are equipped with isolation valves 15 and 19 at the point where they open into the room 10.
  • a command and control system 22 makes it possible to adjust the flow rate of the fans 16 and 20 as well as the position of the valves 15 and 19
  • the connections between the device 22 and the various devices that it controls are shown diagrammatically in the drawing by dashed lines.
  • a pipe 24 fitted with a valve 26 connects the inlet pipe 14 to the extraction pipe 18.
  • connection points of the pipe 24 on the pipes 14 and 18 are located outside the room 10 and, respectively , downstream of the fan 16 and upstream of the fan 20.
  • the pipe 24 thus constitutes a bypass making it possible to circulate the air in the ventilation system without passing through the room 10.
  • FIG. 1 also shows the dismantling system object of the invention placed inside the room 10.
  • This first comprises a hood 28 having substantially the shape of a truncated cone, this hood being placed above above zone 12.
  • the hood 28 has at its periphery first means for creating a dynamic confinement zone mainly comprising a first double wall consisting of two concentric walls 30 and 32 defining between them a space 34.
  • the space 34 communicates with the interior of the local by a circular slot located between the walls 30 and 32, at the base of the latter.
  • An air circulation device (fan 36, compressor, etc.) makes it possible to extract the air located in and in the region of zone 12 by means of a pipe 38 equipped with two filters 40 and 42.
  • the filter 40 acts as a prefilter and can be, for example, an electrostatic filter or an electrostatic cyclone.
  • the filter 42 is a very high efficiency filter or an absolute filter intended to stop the finest dust or particles.
  • the carbon filter 44 makes it possible to stop any harmful vapors .
  • the air extracted by the fan 36 is divided into two parts.
  • a first part is returned to the upper part of the hood through a pipe 50. From there, it flows into the space 34 and forms an air curtain continuously surrounding the zone 12 where the cutting tools are located and the facilities to be dismantled. This creates a dynamic confinement zone around zone 12 and the dust, aerosols, vapors, etc. produced in this zone are evacuated in the upper part of the hood thanks to the fan 36 and to the pipe 38.
  • part air returned to the upper part of the hood by the pipe 50 can be blown into the room through a valve 52 provided at the upper part of the hood.
  • Another part of the air extracted by the fan 36 is sent to the extraction pipe 18 through a pipe 54 fitted with a valve 56.
  • the pipe 54 makes it possible to maintain the desired vacuum inside the room 10 at Classes dismantling operations. Indeed, before starting the dismantling, the valve 15 is gradually closed in order to block the air intake in the room. In this case, the valve 26 can be opened so that the air flows directly from the pipe 14 to the pipe 18 without passing through the room 10. However, there are always leaks and outside air penetrates more or less to inside the room.
  • the flow rate of the fan 36 is adjusted to ensure on the one hand the flow rate necessary to create the containment zone by blowing on the periphery of the hood and, on the other hand, to evacuate in the ducts 54 and 18 an equal flow of air to those who enter the premises through leaks.
  • An alternative embodiment of the means provided for creating a dynamic confinement zone provides for the addition of second gas blowing means. These can be used in place of the first gas blowing means. These second means are intended to create an ascending air curtain, continuously surrounding the zone 12 where the cutting tools and the installations to be dismantled are located.
  • it comprises a crown 33.
  • the latter can either be placed on the ground, surrounding zone 12, or be suspended from the system below zone 12, and concentrically with the hood 28.
  • the crown 33 can be supplied by a pipe 35, itself connected to the fan 36. This connection can be made via a reel 37.
  • the crown 33 must not have a diameter greater than the maximum diameter of the hood 28.
  • These second blowing means can be provided on the same system comprising the first blowing means.
  • these two blowing means cannot operate at the same time, because they would create two opposing air curtains, one descending and the other ascending. Disturbance zones would then appear where the two air curtains meet. In these zones, horizontal aerosol transfers from zone 12 would be favored; what we want to avoid using the system according to the invention.
  • a curtain 58 for example made of vinyl, shown diagrammatically in phantom in Figure 1.
  • This curtain contributes to directing the flow of air leaving the space 34 in a vertical direction in order to reinforce the confinement of the zone 12.
  • a second curtain 60 can also be provided, also made of vinyl, and shown in phantom in the drawing, the air leaving the space 34 thus entering the space between these two curtains.
  • the monitoring and control device 22 also makes it possible to control the valves 15 and 19 as well as the valve 56 fitted to the pipe 54, the valve 48 and the fan 36, and possibly the valve 52, the adjustment of which makes it possible to optimize the dynamic confinement, by adjusting the blown and extracted flows.
  • FIG. 2 shows how the dismantling system which is the subject of the invention can be used in a large building, for example a building containing a nuclear reactor.
  • This building bearing the general reference 62, is limited by a double wall, namely an inner wall 64 and an outer wall 66.
  • the latter are shown in phantom in Figure 2, as are the support structures 68 on which are mounted the reactor 70, the heat exchangers 72, the pumps 74 as well as the pipes connecting these different elements.
  • the dismantling system 76 which is the subject of the invention can be mounted on an overhead crane 78 running at the top of the building 62, the system 76 being attached to this overhead crane by cables 80.
  • the cables 80 are attached to a carriage 82 mounted on the traveling crane and movable with respect thereto. It is thus possible to bring the device 76 to any point inside the building 62.
  • the dismantling system 76 will now be described in more detail with reference to FIG. 3.
  • the system of dismantling 76 object of the invention is in the form of a machine first comprising a mechanical frame 84 on which is mounted the hood 28.
  • the hood 28 is mounted at the bottom of the frame 84.
  • the latter supports, at its upper part, a cell 86 which can accommodate an operator and in which the control devices 88 are located.
  • the cell 86 is surrounded by a protective shield 87.
  • a protective shield 87 As it is 'A significant weight, it constitutes a heavy element capable of increasing the stability of the machine 76.
  • the cell 86 can be omitted and heavy elements of another shape can be used to improve the stability of the machine.
  • the tools used to dismantle the installations to be eliminated can be operated by means of remote manipulators 90. These can advantageously be mounted on the machine 76.
  • the housing 92 comprising all the mechanical and electrical controls of the manipulator 90 is fixed directly on the one hand to the hood and on the other hand to the cell 86.
  • this is only a preferential arrangement and it would not go beyond the scope of the invention by using another assembly, or even by not mounting the remote manipulators or the cutting tools on the machine 76.
  • the device illustrated in Figure 3 has the advantage of being able to integrate into the dismantling machine 76 a number of accessories and, first, the cutting tools and their control and handling system. However, it is also possible to mount means of lighting and remote vision on this machine, temperature detectors, toxic gases or explosives, means for handling the parts to be cut or mobile ventilation screens.
  • the first double wall consisting of two sheets 30 and 32 placed at the periphery of the hood and which define between them a space 34.
  • Each of these sheets has a part in the form of a truncated cone diverging downwards followed by a vertical part.
  • the vertical parts of the sheets 30 and 32 define two concentric cylinders communicating with the outside by a slot located at the lower part of the sheets.
  • a curtain 58 which may be made of vinyl, is attached to the lower part of the outer sheet 32. This curtain is fixed all along the sheet metal 32 and imposes a vertical direction on the air curtain which escapes from the space 34 at the bottom of the hood.
  • This curtain 58 may consist of a set of vinyl blades which partially overlap.
  • a second curtain 60 can be provided attached to the lower part of the inner sheet 30, the air leaving the space 34 thus being sent into the space defined between the two curtains 58 and 60.
  • a certain number of fans 94 arranged so as to blow gas into the space 34 between the sheets 30 and 32.
  • each compartment comprises two chambers, namely a first chamber 102 and a second chamber 104.
  • the chambers 102 and 104 are separated by a partition 106 which is arranged radially inside the hood, like the partition 100, but, unlike the latter, does not extend to the vertical part of the inner sheet 30.
  • a air passage is provided between the two chambers inside the hood and at the periphery thereof.
  • Each chamber 102 communicates with the outside via an opening 108 situated in the vicinity of the axis of the cone defined by the hood.
  • the second chamber 104 it communicates on the one hand with the first and, on the other hand, with the fan 94.
  • the first chamber 102 is equipped with prefilters 40 which can be electrostatic filters or electrostatic cyclones.
  • the second chamber it is equipped with one or more very high efficiency filters or absolute filters 42.
  • the fan 94 makes it possible to aspirate the air located in the confinement zone, that is to say the zone surrounded by the curtain of air flowing from the space 34.
  • the air thus sucked enters the hood through the openings 108, circulates in the first chamber 102 from the center of the hood to the periphery passing through the filters 40, then enters the second chamber 104 after having bypassed the partition 106 and circulates in the second chamber from the periphery of the hood to the center of the latter, passing through the filters 42. It is therefore purified air which is sucked in by the fan 94 and returned to the space 34.
  • an alternative embodiment of the system according to the invention provides for an improvement in the means for extracting the gases present in the dynamic confinement zone.
  • the hood 28 is provided with a second double wall, consisting of the sheets 30 and 39, defining a second internal space 41.
  • the latter is contiguous with the internal space 34 of the first double wall and placed at its interior.
  • This second internal space is in communication with the interior of the room, at the same place as the first internal space, but the gas jet is directed in a different manner.
  • the sheets 30 and 39 define a curved outlet 43 which directs the gas along the internal wall 45 of the sheet 39 inside the hood 28.
  • the gases are therefore directed towards the central part of the hood, at the top of the cone defined by the two double walls and create a convergent flow with that created by the central aspiration of the hood.
  • This second circulation of gas from the hood can also be obtained by means of the same air circulation members used until now in the system according to the invention. This variant therefore makes it possible to accelerate and facilitate the upward aspiration of the gases contained in the dynamic confinement zone, thereby increasing the efficiency of the system.
  • the dismantling system which is the subject of the invention has particularly advantageous advantages, the main one of which is to allow effective elimination of the pollution due to the cutting tools.
  • a dynamic confinement zone is created at the place where the installations to be dismantled are located and that the air in this zone is sucked in, this air immediately passing through front filters to be recycled to create this dynamic containment area.
  • the system can be implemented when the normal room ventilation system is off. This avoids circulating very large amounts of air which risk dispersing the contamination since the flow rate of the fans 36 (FIG. 1) or 94 (FIGS.
  • the dismantling system which is the subject of the invention also has great flexibility of use since it It is possible to make models in an inactive zone in order to study the difficulties of realization and implementation before reproducing the operations in an active zone.
  • the dimensions of the system, as well as the number and nature of the equipment that must be mounted on it, can be adapted according to the type of installation to be dismantled.
  • This system also has interesting advantages in the field of security.
  • this system can be supplied with neutral gas or oxygen-depleted air, which limits the risk of fire and explosion.
  • the system can be supplied with refrigerant gas, for example gaseous nitrogen extracted from a bottle of liquid nitrogen.
  • the capture and filtration installation mounted on the dismantling system object of the invention is designed to recycle the air in the room. This allows, after a dismantling operation, to capture all of the aerosols suspended in the air before starting the ventilation of the room again (the time of the operation is linked to the volume of the room).
  • the system which is the subject of the invention allows an increased lifetime of very high efficiency or absolute filters of the ventilation system since during dismantling operations, it is not they which stop the aerosols produced, but the filters from the dismantling system itself.
  • the filters in the ventilation system are only crossed by purified air, which improves the containment of the room.
  • the filtration, filtration and recycling of the air in the room are systematically carried out for each dismantling operation, the increase in activity in the room is avoided, which necessarily occurs with current dismantling processes. . Consequently, the decontamination times and the exposure time of the personnel are reduced.
  • the dismantling system which is the subject of the invention has interesting advantages from an economic point of view.
  • the costs of decontamination and changing the filters of the normal ventilation network are reduced.
  • the flow of a few hundred thousand cubic meters per hour which is the flow of the normal ventilation system, to only a few thousand cubic meters per hour.
  • This reduction in flow rates makes it easier to capture toxic gases, reduce the size of the purification means (prefilters, carbon filters, very high efficiency or absolute filters) and recycle the air in the room.
  • the system which is the subject of the invention is easy to adjust and has great flexibility of use. It also makes it possible to reduce the implementation costs, to reduce the space requirement of the premises due to the integrated design, to reduce the volume of waste, and finally, it presents the possibility of changing the filters with the manipulators used for dismantling. .
  • the system object of the invention also makes it possible to optimize the performance of the tools and that of the capture of the aerosols produced because the position of the hood, therefore the position of the tools which it carries, is well defined in space. and can be adjusted precisely to coincide with that of the task. It also makes it possible to regulate the capture of the aerosols produced, according to the power of use of the tools.
  • the applications are not limited to the dismantling of nuclear installations but the system which is the subject of the invention can be used by any operation which causes more or less significant pollution of the atmosphere instead intervention (production of aerosols, dust, toxic gases, etc.).
  • the hood it can be used for any operation requiring the creation of a dynamic containment zone.

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Ventilation (AREA)
  • Working Measures On Existing Buildindgs (AREA)

Claims (14)

  1. System zum Abtragen (76) von Einrichtungen in einem Raum (10) der, mittels eines Ventilationssystems (16, 14, 18, 20), unter Unterdruck, oder eventuell unter Überdruck gehalten werden kann, das Abtragen ausgeführt unter Zuhilfenahme mindestens eines Werkzeuges, welches zu Verschmutzungen der in der Nähe besagter Einrichtungen herrschenden Atmosphäre führt, das System umfaßt:
    - Vorrichtungen (28,36) zum Erzeugen einer dynamischen Einschlußzone um das Werkzeug herum, mit Hilfe eingeblasener beziehungsweise abgesaugter gasförmiger Strömungen, umfassend:
    . eine Abzugshaube (28) die über dem Werkzeug angebracht sein kann, diese Abzugshaube (28) besitzt ein Umfangs- und ein Mittelstück und umfaßt eine erste doppelte Wandung (30,32) welche einen Zwischenraum (34) bestimmt, der mit dem inneren des Raumes (10) in Verbindung steht, sowie erste Einblasvorrichtungen (36), so angeordnet, daß ein Gas in den Zwischenraum (34) eingeblasen werden kann.
    . die besagten ersten Einblasvorrichtungen (36) für Gas am Umfangsstück der Abzugshaube (28), so angeordnet, daß ein niedergehender Gasvorhang das Werkzeug umgibt und so, mit zur Erzeugung der besagten dynamischen Einschlußzone beiträgt;
    . die Einblasvorrichtungen (36) sorgen auch für den Abzug von, in der dynamischen Einschlußzone vorhandenen Gasen, der Abzug erfolgt durch das Mittelstück der Abzugshaube (28);
    - Vorrichtungen (40,42) zum Reinigen der so abgezogenen Gase,
       dadurch gekennzeichnet, daß sie Vorrichtungen (22) zur Regulierung besagter gasförmiger Strömungen enthalten, einerseits geeignet den Raum (10) unter besagtem vorgegebenen Druck zu halten wenn das Ventilationssystem nicht in Betrieb ist, und andererseits den erforderlichen Ausstoß an Gas zu gewährleisten um besagte dynamische Einschlußzone zu erzeugen,
       dadurch gekennzeichnet, daß die Vorrichtungen zur Erzeugung einer dynamischen Einschlußzone, eine zweite doppelte Wandung enthalten (30,39), einen zweiten inneren Zwischenraum (41) in der Abzugshaube (28) bestimmend, und innerhalb der ersten doppelten Wandung (30,32) angebracht, mit dem Inneren des Raumes durch gekrümmte Auslässe verbunden sind, um Gase entlang der inneren Wandung (45) der zweiten doppelten Wandung (30,39) in Richtung Mittelstück der Abzugshaube (28) zu blasen, um das Abführen von Gasen aus dem inneren der dynamischen Einschlußzone zu erlauben;
       dadurch gekennzeichnet, daß besagte Reinigungsvorrichtungen umfassen:
    - mindestens einen Raum (96) im Inneren der Abzugshaube (28), dieser Raum (96) steht einerseits mit der besagten Einschlußzone durch eine Öffnung (108) in Verbindung, und andererseits mit einer, auf der Abzugshaube (28) montierten Absaugvorrichtung (94); und
    - mindestens ein Filter (42) im Inneren dieses Raumes (96) um so die Gesamtheit des Gases zu filtern welches den Raum (96) von besagter Öffnung (108) bis zur Absaugvorrichtung (94) durchströmt,
       und dadurch gekennzeichnet, daß sie unter anderem ein mechanisches Gerüst (84) enthält auf welchem die Abzugshaube (28), die Absaugvorrichtungen (94), und die Reinigungsvorrichtungen (40,42) montiert sind.
  2. System (76) nach Anspruch 1, dadurch gekennzeichnet, daß besagte Einblasvorrichtungen zweite Einblasvorrichtungen für Gas umfassen, plaziert oberhalb des die Verunreinigungen verursachenden Werkzeugs, zusammengesetzt aus einem Ring (33), um so einen niedergehenden, das Werkzeug umgebenden Gasvorhang zu bilden, und bei der Bildung besagter dynamischer Einschlußzone mitzuwirken.
  3. System (76) nach Anspruch 2, dadurch gekennzeichnet, daß besagte Reinigungsvorrichtungen (40,42) auf der Abzugshaube (28) montiert sind.
  4. System (76) nach Anspruch 1, dadurch gekennzeichnet, daß besagter Raum (96) enthält:
    - einen ersten Raum (102), durch besagte Öffnung (108) mit der Einschlußzone verbunden;
    - einen zweiten Raum (104), vom ersten (102) durch eine Zwischenwand (106) so getrennt, daß ein Durchlaß für das Gas zwischen beiden Räumen (102,104) frei bleibt, wobei der zweite Raum (104) einerseits mit besagter Absaugvorrichtung (94), und andererseits mit dem ersten Raum (102) durch besagten kleinen Durchlaß in Verbindung steht, mindestens einer der Räume (102,104) mit einem Filter (40,42) ausgestattet ist, so angebracht, daß die Gesamtheit des, diesen Raum durchfließenden Gases, gefiltert wird.
  5. System (76) nach Anspruch 1, dadurch gekennzeichnet, daß es mindestens einen, am Umfangsteil der Abzugshaube (28) befestigten Vorhang (58) umfaßt, der besagte dynamische Einschlußzone umgibt.
  6. System (76) nach Anspruch 5, dadurch gekennzeichnet, daß es unter anderem einen zweiten, am Umfangsteil der Abzugshaube (28) so befestigten Vorhang (60) umfaßt, daß zwischen beiden Vorhängen (58,60) ein Zwischenraum gebildet wird, dieser Zwischenraum (34) umgibt die dynamische Einschlußzone und die ersten Einblasvorrichtungen (36) dergestalt, daß Gas in den so gebildeten Zwischenraum (34) eingeblasen wird.
  7. System (76) nach Anspruch 5 oder 7, dadurch gekennzeichnet, daß mindestens einer der Vorhänge aus Vinyl besteht.
  8. System (76) nach Anspruch 1, dadurch gekennzeichnet, daß es mit Hilfe von Hebezeugen (78) versetzt werden kann.
  9. System (76) nach Anspruch 1, dadurch gekennzeichnet, daß es zur Erhöhung der Stabilität mindestens ein schweres Teil (87) enthält.
  10. System (76) nach Anspruch 9, dadurch gekennzeichnet, daß besagtes schwere Teil (87) eine Panzerung ist.
  11. System (76) nach Anspruch 10, dadurch gekennzeichnet, daß es unter anderem Handhabungsvorrichtungen (90) umfaßt.
  12. System (76) nach Anspruch 1, dadurch gekennzeichnet, daß es Vorrichtungen zur Versorgung mit Flüssigkeiten umfaßt.
  13. System (76) nach Anspruch 1, dadurch gekennzeichnet, daß es eine gepanzerte Zelle (86) zur Aufnahme einer Bedienperson umfaßt.
  14. Verfahren zur Verwertung des Systems zum Abtragen nach Anspruch 1, besagtes Ventilationssystem umfaßt eine Gaszufuhr (15) in den Raum (10) und ein Netz (18,20) zum Absaugen von im Raum (10) befindlichen Gasen, dadurch gekennzeichnet das es folgende Etappen umfaßt:
    (a) verschließen besagter Gaszufuhr (15); und
    (b) anschließen besagter Vorrichtungen (36) zum Absaugen der in der Einschlußzone vorhandenen Gase, an das Netz (18,20) zum Absaugen der im Raum (10) befindlichen Gase.
EP19880402190 1987-09-01 1988-08-30 System zum Abbau von in einem Raum vorhandenen Anlagen und Verfahren zu seiner Durchführung Expired - Lifetime EP0307284B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8712136A FR2619953B1 (fr) 1987-09-01 1987-09-01 Systeme de demantelement d'installations presentes dans un local, son procede de mise en oeuvre et hotte utilisable dans ce systeme
FR8712136 1987-09-01

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EP0307284A1 EP0307284A1 (de) 1989-03-15
EP0307284B1 true EP0307284B1 (de) 1993-02-17

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EP (1) EP0307284B1 (de)
DE (1) DE3878512T2 (de)
FR (1) FR2619953B1 (de)

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JP3395736B2 (ja) * 1999-10-26 2003-04-14 ダイキン工業株式会社 給排気装置
FR2958048B1 (fr) 2010-03-23 2013-01-11 Commissariat Energie Atomique Systeme mobile d'intervention en ambiance de gaz radioactif, notamment de tritium

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Publication number Priority date Publication date Assignee Title
FR2163927A5 (de) * 1971-12-07 1973-07-27 Cometal
US3834293A (en) * 1972-11-22 1974-09-10 L Danieli Equipment for conveying smokes and products of the combustion in a smelting furnace
US3988972A (en) * 1975-01-15 1976-11-02 Hitachi, Ltd. Gas shielding method for a fuel exchange pool and an apparatus therefor

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Publication number Publication date
EP0307284A1 (de) 1989-03-15
DE3878512D1 (de) 1993-03-25
FR2619953B1 (fr) 1989-11-24
DE3878512T2 (de) 1993-09-09
FR2619953A1 (fr) 1989-03-03

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