Modular ventilation device

Abstract

The invention relates to a modular ventilation system for a building, comprising: - at least one first extraction module comprising a first box and at least one air extraction unit arranged inside the first box, the air extraction unit being able to suck air from outside the first box via the first air inlet opening and to inject the sucked air towards the first air outlet opening, and - at least one second filtration module comprising a second box and at least one filtration unit arranged inside the second box, the air filtration unit being able to filter air coming from the second air inlet opening, the filtered air being discharged towards the second air outlet opening, the modular ventilation system being configured to be able to selectively adopt a functional configuration and a storage and / or transport configuration. Figure for the abstract: Fig. 6

Description

Title of the invention: Modular ventilation device Field of invention

[0001] The present invention relates to a modular ventilation system for a building, in particular for the dismantling of a nuclear power plant. Technological background

[0002] The electromechanical dismantling of contaminated equipment, such as equipment present in certain nuclear power plant premises, and the sanitation of the structures of a contaminated premises of this power plant require the installation of a suitable ventilation system. Indeed, when operators carry out these dismantling and sanitation operations, it may be necessary to set up a stato-dynamic confinement around the area to be dismantled. For this, an extraction system, equipped with Very High Efficiency (VHE) filtration, discharging the extracted and filtered air towards a discharge outlet is necessary. For this purpose, a ventilation system is installed, for the duration of the dismantling operations which can be from a few days to several decades.

[0003] The temporary ventilation system must be adapted to the specific characteristics of the dismantling site. In particular, the ventilation system to be installed must be sized according to the extraction and blowing flow rates desired for the building to be dismantled. These flow rates take into account the volume of air to be extracted, the quantity of contaminants, as well as the type of contaminants, in particular radioactive elements, asbestos or silica.

[0004] Once the dismantling operations are completed, the ventilation system itself is dismantled and transported to be disposed of at a waste storage center.

[0005] Dismantling operations of the ventilation system are costly and generate a significant quantity of waste.

[0006] Indeed, the temporary ventilation system put in place for a building dismantling site being specifically designed for this building, it cannot generally be used for the dismantling of another building, even if certain equipment is still in working order. Statement of the invention

[0007] An objective of the invention is to facilitate the design, assembly and disassembly of temporary ventilation systems, in particular ventilation systems used for the dismantling of nuclear power plants.

[0008] To this end, the invention has as its first object a modular ventilation system for the building, including: - at least one first extraction module comprising a first box and at least one air extraction unit arranged inside the first box, the first box comprising at least one first door allowing movement of an operator between the outside and the inside of the first box, at least one first air inlet opening and at least one first air outlet opening, the air extraction unit being capable of sucking air from outside the first box via the first air inlet opening and of injecting the sucked air towards the first air outlet opening, and - at least one second filtration module comprising a second box and at least one filtration unit arranged inside the second box, the second box comprising a second door allowing movement of an operator between the outside and the inside of the second box, a second air inlet opening and a second air outlet opening, the air filtration unit being capable of filtering air coming from the second air inlet opening, the filtered air being discharged towards the second air outlet opening, the modular ventilation system being configured to be able to selectively adopt a functional configuration in which the second air inlet opening of the second box is connected to the building, in particular to a room to be ventilated in the building, and in which the second air outlet opening of the second box is connected to the first air inlet opening of the first box so as to extract air from the room of the building by the extraction unit via the filtration unit so that the air is filtered by the filtration unit before being extracted by the extraction unit by means of the first air outlet opening, a storage and / or transport configuration in which the second filtration module is disconnected from the building, and in which the first extraction module and the second filtration module are disconnected from each other,so that the first extraction module and the second filtration module can be stored and / or transported independently of each other.

[0009] The first extraction module and the second filtration module can thus be transported to a dismantling site, used on this site, and then transported again to a storage location or to another dismantling site. The modules can thus be easily reused and not be discarded while they are still in working order.

[0010] Furthermore, each module can be transported and stored independently.

[0011] This modular ventilation system thus presents great adaptability and therefore great ease of use for various dismantling sites.

[0012] According to particular embodiments of the invention which can be taken alone or in combination: - the first extraction module has an extraction capacity of 5000 to 35,000 m3 / h of air; different extraction capacities can be obtained depending on the number of extraction units contained in the box and depending on the power of the extraction unit(s); - the ventilation system comprises a plurality of first extraction modules and a plurality of second filtration modules, each second filtration module being capable of being connected to a respective first extraction module; - the ventilation system further comprises at least one third regulation module, comprising a third box and at least one third control unit arranged inside the third box, the third box comprising a third door allowing an operator to move between the outside and the inside of the third box, and in which the third regulation module is suitable, in the functional configuration of the system, for being electrically connected to each first extraction module and / or to each second filtration module to allow the control unit to control the extraction unit and / or the filtration unit, and in the storage and / or transport configuration, for being disconnected from the other modules, so that it can be stored and / or transported independently of the other modules; - the ventilation system further comprises a clean exhaust chimney, in the functional configuration of the system, to be connected to the first air outlet opening of each first extraction module in order to evacuate the air filtered by the filtration unit then extracted by the first extraction module, and, in the storage and / or transport configuration, to be disconnected from the first extraction modules, so as to be able to be stored and / or transported independently of the other modules; - the ventilation system also comprises at least one fourth monitoring module comprising a fourth box and at least one analysis and detection unit arranged inside the fourth box, the fourth box comprising a fourth door allowing an operator to move between the outside and the inside of the fourth box, and in which the fourth monitoring module is suitable, in the functional configuration of the system, for being connected to the exhaust chimney, to allow the analysis and detection unit to analyze the air evacuated via the exhaust chimney, and in the storage and / or transport configuration, for being disconnected from the exhaust chimney so that it can be stored and / or transported independently of the other modules and the exhaust chimney; - the ventilation system further comprises at least a fifth air blowing module comprising a fifth box and at least one blowing unit arranged inside the fifth box, the fifth box comprising a fifth door allowing movement of an operator between the exterior and the interior of the fifth box, a fifth air inlet opening and a fifth air outlet opening, and wherein the fifth air blowing module is suitable, in the functional configuration of the system, for being connected to the building to enable the blowing unit to take air from outside the building via the fifth air inlet opening and to blow the taken air towards the interior of the building via the fifth air outlet opening, and in the storage and / or transport configuration, for being disconnected from the building, so that it can be stored and / or transported independently of the other modules; - the fifth air blowing module has a blowing capacity ranging from 5000 to 35,000 m3 / h; - the ventilation system further comprises an air treatment unit comprising a device for heating and / or a device for cooling the air taken before blowing it into the building; - the ventilation system further comprises at least a sixth refrigeration module comprising a refrigeration box in which a refrigeration unit is arranged and which is suitable, in the functional configuration of the system, for being connected to the air treatment unit of the fifth air blowing module, so that the air treatment unit can cool the air taken by the blowing unit by means of the cooling device, and in the storage and / or transport configuration, for being disconnected from the fifth blowing module, so that it can be stored and / or transported independently of the other modules; - the ventilation system comprises several fifth air blowing modules; and - the ventilation system comprises several sixth refrigeration modules, each refrigeration module being suitable for being connected to the air treatment unit of a respective fifth air blowing module. Brief description of the Figures

[0013] Other characteristics and advantages of the invention will appear on reading the description which follows, given solely by way of example and with reference to the appended drawings, in which:

[0014] [Fig.1a] [Fig.1a] is a schematic top view of a ventilation system according to an embodiment of the invention in functional configuration;

[0015] [Fig.lb] [Fig.lb] is a schematic top view of the ventilation system of [Fig. la] in a storage and / or transport configuration;

[0016] [Fig.2a] [Fig.2a] is a schematic and perspective view of a first module extraction according to one embodiment of the invention;

[0017] [Fig.2b] [Fig.2b] is a schematic and perspective view of a first extraction module according to an embodiment of the invention;

[0018] [Fig.3] [Fig.3] is a schematic and perspective view of a second filtration module according to an embodiment of the invention;

[0019] [Fig.4] [Fig.4] is a schematic top view of a ventilation system comprising two second extraction modules and two second filtration modules;

[0020] [Fig.5a] [Fig.5a] is a schematic and perspective view of a third filtration module according to an embodiment of the invention;

[0021] [Fig.5b] [Fig.5b] is a schematic view of a third filtration module according to an embodiment of the invention;

[0022] [Fig.6] [Fig.6] is a schematic top view of a ventilation system according to one embodiment of the invention;

[0023] [Fig.7] [Fig.7] is a schematic and perspective view of an evacuation chimney according to one embodiment of the invention;

[0024] [Fig.8a] [Fig.8a] is a schematic and perspective view of a fourth monitoring module according to an embodiment of the invention;

[0025] [Fig.8b] [Fig.8b] is a schematic and perspective view of a fourth monitoring module according to an embodiment of the invention;

[0026] [Fig.9a] [Fig.9a] is a schematic and perspective view of a fifth air blowing module according to an embodiment of the invention;

[0027] [Fig.9b] [Fig.9a] is a schematic and perspective view of a fifth air blowing module according to an embodiment of the invention; and

[0028] [Fig. 10] [Fig. 10] is a schematic and top view of a ventilation system according to one embodiment of the invention. Detailed description of an example of implementation

[0029] With reference to figures 1a, 1b, 2 and 3, a modular ventilation system 800 according to an embodiment of the invention comprises a first extraction module 100 and a second filtration module 200.

[0030] The first extraction module 100 comprises a first box 102 inside which an air extraction unit 110 is arranged. The first box 102 comprises a first door 140 allowing an operator to move between the outside and the inside of the box. An operator can thus carry out control and / or maintenance operations, or even bring functional elements into the box 102 in order to replace defective elements such as, for example, fans. Furthermore, the first box 102 comprises a first air inlet opening 106 and a first air outlet opening 108. The air extraction unit 110 allows air to be drawn in from outside the first box 102 via the first air inlet opening 106 and the previously drawn in air to be evacuated by injecting it towards the first air outlet opening 108.

[0031] The second filtration module 200 comprises a second box 202 inside which a filtration unit 210 is arranged. The second box 202 comprises a second door 204 allowing an operator to move between the outside and the inside of the box. As with the first box 102, the door allows the operator to carry out control and / or maintenance operations and also to bring equipment into the box 202. Furthermore, the second box 202 comprises a second air inlet opening 206 and a second air outlet opening 208. The air filtration unit 210 makes it possible to filter air coming from the second air inlet opening 206 and then to evacuate this filtered air towards the second air outlet opening 208.

[0032] The ventilation system can adopt two possible configurations: a functional configuration shown in [Fig. 1a] and a storage and / or transport configuration shown in [Fig. 1b].

[0033] In the functional configuration, the second filtration module 200 is connected to a room 902 to be ventilated in the building 900, in particular to an opening 904 of this room, this room 902 possibly being a room or an area inside the building 900. The second filtration module 200 is then connected to the room 902 by the second air inlet opening 206 and the second air outlet opening 208 is then connected to the first extraction module 100 by the first air inlet opening 106. The first extraction module 100 then receives the air coming from the second filtration module 200 and evacuates it through the first air outlet opening 108.

[0034] Thus, in this functional configuration, the potentially contaminated air contained in the building 900, and in particular in the room 902 to which the ventilation system is connected, is sucked in by the first extraction module 100 via the second filtration module 200. The air sucked in from the room 902 is then filtered by the filtration unit 210 to be at least partially decontaminated, then this filtered air is sucked in and evacuated to the outside of the building by the extraction unit 110.

[0035] In this functional configuration, the connection between the room 902 and the second filtration module 200, between the second filtration module 200 and the first extraction module 100, as well as between the first extraction module 100 and the exterior of the building 900, is made by means of airtight ducts 802, 803 and 804. A first duct 802 is then connected in a sealed manner to the opening 904 and to the second air inlet opening 206, a second duct 803 is connected in a sealed manner to the second air outlet opening 208 and to the first air inlet opening 106, and a third duct 804 is connected to the first air outlet opening 208 and to the first air inlet opening 106. air outlet 108 and outside the building.

[0036] In the case where the air leaving the first extraction module 100 is not contaminated, following effective filtration, the air can be evacuated directly outside the building. In the case where the extracted air is potentially still contaminated, it is evacuated through a chimney which may belong to the building to which the ventilation system 800 is connected or through a chimney installed for this purpose.

[0037] In the storage and / or transport configuration, the second filtration module 200 is disconnected from the building 900, and the first extraction module 100 and the second filtration module 200 are disconnected from each other. The first extraction module 100 and the second filtration module 200 can then be stored and / or transported.

[0038] The ventilation system is thus modular since the installation of the boxes can be adapted to each dismantling site of a building, in particular to their size, to the position of the premises, and also to the type of contaminating elements and their quantity in the building. Indeed, the boxes can be installed and arranged in different ways and the ventilation system can therefore be adapted to the position of the premises to be ventilated in the building to be dismantled.

[0039] In the storage and / or transport configuration, the openings of the boxes are preferably sealed tightly by means of tapes, or any other sealed closing system.

[0040] The boxes can thus be stored and / or transported and then reused directly without it being necessary to modify their contents. The boxes are also easily stackable, which facilitates their storage and also their transport.

[0041] The first and second boxes 102 and 202 are preferably standard sealed containers, preferably IP2 containers which ensure total sealing within the meaning of the definition of an IP2 type package and prevent any leakage of radioactive material which may be present in the container. In the case where IP2 containers are used, the means used to close the openings make it possible to maintain this total sealing.

[0042] The use of standard containers allows for optimized storage and also transport by train, truck and / or boat.

[0043] The first box 102 and the second box 202 may be of the same dimensions or of different dimensions, these dimensions preferably being standard. Preferably, the second filtration box 202 is larger than the first extraction box 102.

[0044] The first and second modules 102 and 202 may contain other elements than those described with reference to FIGS. 2 and 3, in particular a greater number of doors and openings, one or more other functional unit(s), for example example several extraction units in the first extraction module and / or several filtration units in the second filtration module, and also other elements as described further.

[0045] The first extraction module 100 has an extraction capacity that can range from 5000 m3 / h to 35000 m3 / h, thus creating a depression of approximately 3000 Pa upstream of each filtration box. Such a depression corresponds to the needs of the construction sites. For a given extraction module, the extraction capacity can vary depending on the number of extraction units that it contains and the power of each extraction unit present. It is also possible, when the extraction module contains several extraction units, to operate only some of these extraction units.

[0046] The extraction capacity of the first module 100 can thus be adapted to the room to be ventilated by choosing the extraction module having the desired capacity and / or by choosing the number of extraction units of the module to be operated.

[0047] Furthermore, the ventilation system may comprise a plurality of first extraction modules and a plurality of second filtration modules. In such a system, each second filtration module is capable of being connected to a respective first extraction module. Each second filtration module is also connected to the room to be ventilated. According to a possible variant, the second filtration modules may be connected to the room independently, i.e. each from a separate opening in the room. According to another possible variant, the second filtration modules may be connected to the room via the same opening. In such a system, the two extraction modules and / or the two filtration modules are preferably identical but may be different.

[0048] An example of a ventilation system comprising a plurality of first extraction modules and a plurality of second filtration modules is illustrated in [Fig. 4]. In this example, the ventilation system 1000 comprises two first extraction modules 100a and 100b as well as two second filtration modules 200a and 200b. Each second filtration module is capable of being connected to a first extraction module, thus forming a subsystem.

[0049] The ventilation system 1000 thus comprises a first ventilation subsystem 800a which is identical to the system 800 described with reference to [Fig. 1a], the different elements of the subsystem 800a bearing the same reference as the elements of the system 800 but assigned an index “a”, and a second ventilation subsystem 800b which is identical to the system 800, the different elements of the subsystem 800a bearing the same reference as the elements of the system 800 but assigned an index “b”.

[0050] In this example, the first subsystem 800a is connected to the room 902 by a first opening 904a via the second filtration module 200a and the second subsystem 800b is connected to the room 902 by a second opening 904b via the second filtration module 200b. Furthermore, each subsystem 800a and 800b comprises a third exhaust duct 804a and 804b respectively for evacuating the extracted and filtered air to the outside. These third exhaust ducts 804a and 804b can evacuate the extracted air directly to the outside or can each be connected to a separate exhaust chimney or on the contrary be connected to the same chimney.

[0051] A ventilation system comprising a plurality of subsystems makes it possible to adapt it to the needs of the construction site and to easily size the ventilation to the size of the room to be ventilated as well as to the quantity and type of contaminating and / or toxic elements present in the building, for example asbestos and / or radioactive elements. Indeed, it makes it possible not to necessarily modify the elements inside the filtration and extraction modules to modify the extraction capacity but rather to vary the number of modules. The system is thus modular and adaptable and makes it possible to use the first extraction modules and / or the second filtration modules successively for different construction sites, in particular nuclear power plant dismantling sites.

[0052] According to a possible embodiment variant, a system may comprise a different number of first extraction modules and second filtration modules. According to this variant, several first extraction modules may be connected to a single filtration module.

[0053] According to a detailed embodiment illustrated in [Fig.2b], the first extraction module 100 comprises a box 102 which is a container of the IP2 type of standard dimension 20 feet high (also known as “20 feet high cube”). The first extraction unit 110 comprises a first extraction fan 112a and a second extraction fan 112b each providing 50% of the nominal flow rate of the extraction unit 110.

[0054] The container 102 as well as the containers which will be described later can be insulated with rock wool or any type of insulating material.

[0055] Each fan 112a and 112b is equipped upstream (in the direction of air circulation) with a manual isolation register, and downstream with a non-return valve then with a manual isolation register.

[0056] In order to allow the adjustment of a flow rate ranging from 5000 m3 / h to 35000 m3 / h while maintaining a depression of 3000 Pa at the connection point between the room 902 and the second air inlet opening 206 of the second filtration module 200, each fan 112a and 112b being equipped with a speed variator and an upstream tilter.

[0057] The first extraction unit 110 is furthermore connected to an adjustment register positioned in the second filtration module.

[0058] The first extraction module 100 further comprises a lighting system for light and safety lighting, fire detectors, temperature measurement and an air conditioner.

[0059] In this embodiment, the first box 102 is provided with two access doors 104a and 104b each positioned at one end of the box so as to facilitate access for one or more operators to the different parts of the container 102.

[0060] The second filtration module 200 connected to the first extraction module 100 comprises a box 202 which is an IP2 type container of standard dimension 40 feet high (also known as “40 feet high cube”).

[0061] The container 202 comprises a first filter zone 212 and a second access zone 214.

[0062] The second filtration unit 210 is positioned in the filter zone 212 and comprises a ventilation branch making it possible to maintain this filter zone 212 at a depression of approximately -80 Pa in order to confine the contamination inside the container 202. The ventilation branch is equipped with a very high efficiency (THE) filter, a sealed manual isolation damper and a motorized adjustment damper.

[0063] The access area 214 allows access to the filter area without loss of vacuum. This access area 214 is ventilated and includes a vacuum display that an operator can view.

[0064] The second filtration unit 210 also comprises a first filtration line 216 and a second filtration line 218 parallel to the first filtration line, each filtration line providing 50% of the nominal flow rate. Each filtration line is airtight so that the air is evacuated towards the first extraction module without breaking the containment.

[0065] The second filtration unit 210 has an air inlet duct 222 connecting the second air inlet opening 206 to each filtration line 216 and 218, and comprising a motorized isolation damper. The second filtration unit 210 also comprises an exhaust duct 220 connecting each filtration line 216 and 218 to the second air outlet opening 208.

[0066] Each filtration line 216, 218 comprises different stages each comprising a differential pressure measuring device, the first stage serving to carry out a first filtration and thus protect the second filter.

[0067] The second filtration module 200 also comprises a reference atmospheric pressure measurement device installed outside the box on the roof or on a side wall.

[0068] The second filtration module is also equipped with a lighting system, a fire detector, a duct smoke detector, a temperature measuring device, a dose rate measuring device monitoring the level of radioactivity, an individual fire water retention device, and a control-command device.

[0069] The first air extraction container 100 and the second filtration container 200 are each insulated internally with rock wool.

[0070] With reference to [Fig.5a], the ventilation system 800 may also comprise a third regulation module 300 comprising a third box 302 and a control unit 310 arranged inside the third box 302. The third box 310 also comprises a third door 304 allowing the circulation of an operator between the inside and the outside of the third box 302 and also maintenance and equipment replacement operations.

[0071] In a functional configuration shown in [Fig.6], the third regulation module 300 is electrically connected to the first extraction module 100 and to the second filtration module 200. The control unit 310 can thus control the extraction unit 110 and the filtration unit 210. The control unit 310 comprises one or more devices chosen from an electrical power supply device, a transformer adaptable to the voltage of the building, a device for monitoring and controlling the operation of the first filtration module and a device for monitoring and controlling the operation of the second extraction module.

[0072] In a storage and / or transport configuration, the third regulation module 300 is disconnected from the first extraction module and the second filtration module. The third regulation module 300 can then be stored and / or transported independently of the other modules.

[0073] In the case where the ventilation system does not include a third regulation module 300, the ventilation systems can be electrically connected to a regulation system present in the building making it possible to control the extraction unit and / or the filtration unit.

[0074] According to a detailed embodiment illustrated in [Fig.5b], the third regulation module 300 comprises a box 302 which is a standard 40-foot high cube container (also known as a “40-foot high cube”).

[0075] In this embodiment, the third control unit 310 comprises a first transformer 322 positioned in a first zone 312, a second transformer 326 positioned in a second zone 316, a low voltage general switchboard (LVGS) 324 positioned in a third zone 314 and an air conditioning device 328 positioned in a fourth zone 318.

[0076] The first zone 312 is accessible by a first door 304a, the second zone 316 is accessible through a second door 304c, the third area 314 is accessible through a third door 304b, and the fourth area 318 is accessible through a fourth door 304d.

[0077] The third control unit 310 also comprises a control-command cabinet, a human-machine interface (HMI) comprising a touch screen and indicator lights indicating the presence of voltages or faults, a fire detection device and a lighting device, a fire detection center which centralizes the information from the fire detectors present in the other modules, and also an inverter and batteries in the event that the power supply to the site is cut off.

[0078] The third regulation module 300 further comprises a fiber optic or copper loop and power cables 840 making it possible to connect the control cabinet of the third regulation module 300 to the control device of each module of the ventilation system 800. Furthermore, the third regulation module 300 can also be connected by power cables to the electrical system present on the site.

[0079] With reference to Figures 6 and 7, the ventilation system 800 may further comprise an exhaust chimney 700. In a functional configuration illustrated in [Fig.6], the exhaust chimney 700 is connected to the first air outlet opening of the first extraction module 100, and this by an exhaust opening 706 of said exhaust chimney. Thus, the air from the building, once filtered and extracted, is evacuated to the outside.

[0080] The evacuation chimney 700 is preferably formed of a cylinder 702 surmounting a base 704 for fixing to the ground. The cylinder 702 can be telescopic so that its height can be adapted, on the one hand, to the dimensions of the building and / or the dismantling site and, on the other hand, to the volume and / or the flow rate of air to be evacuated.

[0081] In a storage and / or transport configuration, the evacuation chimney 700 is disconnected from the first extraction module 100 and the evacuation opening 706 is then preferably closed by a closing flap or hatch. In the case where the cylinder 702 is telescopic, the latter can be compacted to facilitate storage or transport.

[0082] In the case where the ventilation system does not include an evacuation chimney, the evacuation is carried out via a chimney already present on the site and to which the first extraction module is connected.

[0083] In the case where the ventilation system comprises several first extraction modules, the ventilation system preferably comprises a single exhaust chimney and the first extraction modules are then all connected to said chimney. However, the ventilation system may also comprise several chimneys, each first extraction module then being connected to a separate chimney.

[0084] With reference to figures 6, 7 and 8a, the ventilation system 800 may further comprise a fourth monitoring module 400 comprising a fourth box 402 and an analysis and detection unit 410 which is arranged inside the box 402. The fourth box 402 comprises a door 404 allowing the circulation of an operator between the exterior and the interior of the building 900.

[0085] In a functional configuration of the ventilation system 800, the fourth monitoring module 400 is connected to the exhaust stack 700 by means of a sampling and discharge loop 412 passing through the sampling openings 708, 406a and 406b and which sample the air discharged in the stack, convey it to sensors of the unit 410 for analysis and discharge it into the stack. Thus, the analysis and detection unit can analyze the air extracted from the building and discharged through the exhaust stack 700. The fourth monitoring module 400 makes it possible to analyze the discharged air and to verify that it contains limited quantities of harmful elements, such as for example radioactive compounds.

[0086] When the ventilation system 800 comprises a third regulation module 300, the latter is electrically connected to the fourth monitoring module 400 and makes it possible to supply the fourth monitoring module 400 with electricity and also to control its operation.

[0087] In the case where the ventilation system does not include a fourth monitoring module, the analysis of the evacuated air, if necessary, is carried out by a monitoring module already present on the site.

[0088] In the storage and / or transport configuration, the fourth monitoring module is disconnected from the chimney and also from the third regulation module 300 if the ventilation system 800 comprises such a module.

[0089] According to a detailed embodiment shown in [Fig.8b], the exhaust chimney 700 comprises a cylinder 702 with a minimum height of 11 m and which may be of different diameters. In particular, the diameter may be 450 mm for an air extraction flow rate ranging from 5000 to 10000 m3 / h, 650 mm for an air extraction flow rate ranging from 10000 to 21000 m3 / h, 900 mm for an air extraction flow rate ranging from 21000 to 45000 m3 / h, 1300 mm for an air extraction flow rate ranging from 45000 to 90000 m3 / h.

[0090] Thus, depending on the needs of the site in the room 902 to which the ventilation system 800 is connected, depending on the extraction capacity of the first extraction module 100 and depending on the number of first extraction modules that the ventilation system comprises, it is possible to choose an evacuation chimney according to its diameter.

[0091] The base 604 of the chimney is preferably fixed to the ground and in particular sealed by means of a flange.

[0092] According to a detailed embodiment shown in [Fig.8b], the fourth monitoring module 400 comprises a box 402 which is an IP2 type container of standard dimension 20 feet high (also known as “20 feet high cube”).

[0093] The fourth monitoring module 400 comprises at least one analysis unit 410 which comprises sampling devices (in particular rods) 412, at least one air flow measurement sensor in the chimney 700, direct-pass manual isolation valves upstream and downstream of each sampling device, and discharge devices (in particular rods) 414 whose discharge is located on the chimney 700 downstream of the sampling devices.

[0094] The sampling devices can allow the retention of aerosols by filters, the sampling of iodine on an activated carbon cartridge, the sampling of tritium in a bubbler, or even the sampling of carbon 14 on a molecular sieve.

[0095] Furthermore, the fourth monitoring module 400 further comprises a lighting device, fire detectors, a fire water retention device, a temperature measurement sensor and an air conditioning device.

[0096] When the building 900 to be dismantled has openings or has poor sealing, the depression generated by the extraction of air by means of the first extraction module 100 is compensated by spontaneous air inlets into the building.

[0097] However, when the building 900 is relatively airtight and the quantity of extracted air cannot be compensated by outside air inlets, the ventilation system 800 further comprises a fifth air blowing module 500.

[0098] The blowing module can also be used solely to heat or cool the temperature inside the building.

[0099] With reference to figures 6 and 9a, the fifth air blowing module 500 comprises a fifth box 502 inside which a blowing unit 510 is arranged. The fifth box 502 also comprises a fifth door 504 allowing an operator to move between the outside and the inside of the fifth box 502. Furthermore, the fifth box 502 comprises a fifth air inlet opening 506 and a fifth air outlet opening 508.

[0100] In the functional configuration of the system 800, the fifth air blowing module 500 is connected to the room 902 by means of a sixth duct 806 which connects the fifth air outlet opening 508 of the box 502 to a suction opening 906 of the room 902. In this way, the fifth air blowing module 500 sucks in outside air from the fifth air inlet opening 506 and blowing inside the room 902 through the fifth air outlet opening 508, and this by means of the fifth blowing unit 510.

[0101] Thus, the fifth air blowing module 500 makes it possible to compensate for the depression caused in the room 902 by the air extraction by means of the first air extraction module 100.

[0102] Furthermore, the fifth air blowing module 500 may comprise an air treatment unit 520 comprising a device for heating and / or a device for cooling the air taken before blowing it towards the interior of the building.

[0103] In the storage and / or transport configuration, the fifth air blowing module 500 is disconnected from the building 900 and can then be stored and / or transported.

[0104] In this configuration, the openings 506 and 508 of the fifth box 502 are preferably closed in a sealed manner by means of hatches or flaps, or any other sealed closing system.

[0105] The fifth air blowing module preferably has a blowing capacity ranging from 5000 m3 / h to 35000 m3 / h. For a given air blowing module, the blowing capacity may vary depending on the number of blowing units it contains and the power of each blowing unit present. It is also possible, when the fifth air blowing module contains several blowing units, to operate only some of these blowing units.

[0106] The blowing capacity of the fifth module 500 can thus be adapted to the room to be ventilated by choosing the air blowing module having the desired capacity and / or by choosing the number of blowing units of the module to be operated. The fifth blowing module 500 is also adapted to the extraction capacity of the first air extraction module 100.

[0107] Furthermore, the ventilation system 800 may comprise a plurality of fifth air blowing modules 500, preferably identical but possibly different. In such a system, each fifth blowing module is suitable for being connected to the room to be ventilated. Preferably, the fifth blowing modules are connected to the room independently, i.e. each from a separate opening in the room. However, according to a possible variant, the fifth blowing modules may be connected to the room via the same opening.

[0108] As illustrated in [Fig.6], in the case where the air treatment unit 520 comprises a cooling device, the ventilation system 800 may further comprise a sixth refrigeration module 600 comprising a refrigeration unit 610 which can be connected to the air treatment unit 520. When the ventilation system 800 is in the operational configuration, the air treatment unit 520 is connected to the refrigeration unit 610, thus making it possible to cool the air. taken by the blowing module 500.

[0109] Thus, the sixth refrigeration module 600 makes it possible to maintain a suitable working temperature in the room 902 in the event that the temperature outside the building 900 is too high.

[0110] In the storage and / or transport configuration, the sixth refrigeration module 600 can be disconnected from the fifth air conditioning module 500 so that it can be stored and / or transported independently of the other modules.

[0111] [Fig.6] illustrates a ventilation system 800 comprising the various modules just described as well as the chimney. However, the ventilation system 800 may comprise only the first air extraction module 100 and the second filtration module 200, or comprise the first air extraction module 100 and the second filtration module 200 and one or more of the other modules.

[0112] According to a detailed embodiment shown in [Fig.9b], the fifth blowing module 500 comprises a box 502 which is a standard 40-foot high cube container (also known as a “20-foot high cube”).

[0113] The fifth blowing module 500 comprises a blowing unit 510 which comprises a first ventilation line 512 and a second ventilation line 514, each line generating 50% of the air flow blown into the room 902. Each ventilation line 512, 514 comprises a manual isolation damper, a centrifugal fan equipped with a variator and an incline, and a non-return valve downstream of the fan.

[0114] The outside air is extracted through an extraction opening 506, passes through the processing unit 510 where it is optionally cooled or heated, then passes through the two ventilation lines 512 and 514. The two ventilation lines 512 and 514 join in a common conduit 516 so as to blow the air into the building through the blowing opening 508.

[0115] The blowing unit 510 further comprises a motorized isolation register, an extractor for ensuring the renewal of the air in the container, a duct smoke detector and a fire detector, a lighting device, a fire water retention device, a temperature measurement sensor and an air conditioning device.

[0116] The container 502 further comprises an external air intake grille equipped with electrically traced anti-rain, anti-bird, anti-snow and anti-frost devices.

[0117] The air treatment unit 510 comprises a cold battery making it possible to cool the air taken from outside the module before injecting it into the room 902 and a hot battery making it possible, on the contrary, to heat the air taken from outside the module before injecting it into the room 902. The air can thus be cooled or heated as required.

[0118] The cold battery is powered by a sixth refrigeration module 600 comprising the refrigeration unit 610 associated with an expansion tank 620 whose dimensions allow standard transport.

[0119] [Fig. 10] illustrates a ventilation system 800 which comprises three first extraction modules 100 each being associated with a second filtration module 200 as described in [Fig.2b]. These three extraction module / filtration module subsystems make it possible to extract and filter air from the room 902.

[0120] The extracted air is then evacuated to the outside through the evacuation chimney 700 which is associated with a fourth monitoring module as described in [Fig.8b].

[0121] The ventilation system also comprises three fifth blowing modules 500, each associated with a sixth refrigeration module 600 as described in [Fig.9b] which make it possible to compensate for the depression created by the extraction modules 100.

[0122] Finally, the different modules are connected to a third regulation module 300 such as that described in [Fig.5b].

[0123] This ventilation system has a ventilation capacity of 90,000 m3 / h in extraction and blowing. The combination of different modules thus makes it possible to install a ventilation system adapted to the needs of the building site. Furthermore, since each module is independent, once the dismantling operation is complete, the different modules can be closed and then transported and / or stored so that they can be reused on other sites.

[0124] In the case where the ventilation system only comprises two air extraction modules each associated with a filtration module and two air blowing modules, the ventilation capacity is 60,000 m3 / h.

[0125] The system is thus modular and can be adapted to the needs of each dismantling site.

Claims

1. Claims Modular ventilation system (800, 1000) for a building (900), comprising: - at least one first extraction module (100) comprising a first box (102) and at least one air extraction unit (110) arranged inside the first box, the first box (102) comprising at least one first door (104) allowing movement of an operator between the outside and the inside of the first box, at least one first air inlet opening (106) and at least one first air outlet opening (108), the air extraction unit (110) being capable of sucking air from outside the first box via the first air inlet opening and of injecting the sucked air towards the first air outlet opening, and - at least one second filtration module (200) comprising a second box (202) and at least one air filtration unit (210) arranged inside the second box (202), the second box comprising a second door (204) allowing movement of an operator between the outside and the inside of the second box, a second air inlet opening (206) and a second air outlet opening (208), the air filtration unit (210) being capable of filtering air coming from the second air inlet opening, the filtered air being discharged towards the second air outlet opening, the modular ventilation system (800, 1000) being configured to be able to selectively adopt, a functional configuration in which the second air inlet opening (206) of the second box (202) is connected to a room (902) to be ventilated of the building (900) and in which the second air outlet opening (208) of the second box (202) is connected to the first air inlet opening (106) of the first box (102) so as to extract air from the room of the building by the extraction unit (110) via the filtration unit (210) so that the air is filtered, by the filtration unit, before being extracted by the extraction unit by means of the first air outlet opening (106), and, a storage and / or transport configuration in which the second filtration module (200) is disconnected from the building (900), and in which the first extraction module (100) and the second filtration module (200) are disconnected from each other,so that the first extraction module (100) and the second, filtration module (200) can be stored and / or transported independently of each other.

2. The system (800, 1000) of claim 1, wherein the first extraction module (100) has an extraction capacity of 5000 to 35,000 m3 / h of air.

3. System (800, 1000) according to one of claims 1 and 2, comprising a plurality of first extraction modules (100) and a plurality of second filtration modules (200), each second filtration module being able to be connected to a respective first extraction module.

4. System (800, 1000) according to one of claims 1 to 3, further comprising: - at least one third regulation module (300), comprising a third box (302) and at least one third control unit (310) arranged inside the third box (302), the third box comprising a third door (304) allowing movement of an operator between the outside and the inside of the third box, and in which the third regulation module (300) is suitable, in the functional configuration of the system, for being electrically connected to each first extraction module (100) and / or to each second filtration module (200) to allow the control unit (310) to control the extraction unit (110) and / or the filtration unit (210), and in the storage and / or transport configuration, for being disconnected from the other modules, so as to be able to be stored and / or transported independently of other modules.

5. System (800, 1000) according to any one of claims 1 to 4, further comprising: - an exhaust chimney (700) suitable, in the functional configuration of the system, for being connected to the first air outlet opening (108) of each first extraction module (100) in order to evacuate the air filtered by the filtration unit (200) then extracted by the first extraction module (100), and, in the storage and / or transport configuration, for being disconnected from the first modules, so as to be able to be stored and / or transported independently of the other modules.

6. System (800, 1000) according to claim 5, further comprising: - at least one fourth monitoring module (400) comprising a fourth box (402) and at least one analysis and detection unit (410) arranged inside the fourth box (402), the fourth box (400) comprising a fourth door (404) allowing an operator to move between the outside and the inside of the fourth box, and in which the fourth monitoring module (400) is suitable, in the functional configuration of the system, for being connected to the exhaust chimney (600), to allow the analysis and detection unit (410) to analyze the air evacuated via the exhaust chimney (600), and in the storage and / or transport configuration, for being disconnected from the exhaust chimney so that it can be stored and / or transported independently of the other modules and the exhaust chimney.

7. System (800, 1000) according to one of claims 1 to 6, further comprising: - at least one fifth air blowing module (500) comprising a fifth box (502) and at least one blowing unit (510) arranged inside the fifth box (502), the fifth box (502) comprising a fifth door (504) allowing circulation of an operator between the outside and the inside of the fifth box, a fifth air inlet opening (506) and a fifth air outlet opening (508), and wherein the fifth air blowing module (500) is suitable, in the functional configuration of the system, for being connected to the building (900) to allow the blowing unit (510) to take air from outside the building via the fifth air inlet opening (506) and to blow the air taken into the building via the fifth air outlet opening (508), and in the storage and / or transport configuration,to be disconnected from the building, so that it can be stored and / or transported independently of the other modules.,

8. The system (800, 1000) of claim 7, wherein the fifth air blowing module (500) has a blowing capacity ranging from 5000 to 35,000 m3 / h.

9. System (800, 1000) according to claim 7 or 8, further comprising an air treatment unit (520) comprising a device for heating and / or a device for cooling the air taken before blowing it towards the interior of the building.

10. The system (800, 1000) of claim 9, further comprising at least one sixth refrigeration module (600) comprising a refrigeration box gorific in which a refrigeration unit (610) is arranged and which is suitable, in the functional configuration of the system, for being connected to the air treatment unit (520) of the fifth air blowing module (500), so that the air treatment unit (520) can cool the air taken by the blowing unit (510) by means of the cooling device, and in the storage and / or transport configuration, for being disconnected from the fifth blowing module, so that it can be stored and / or transported independently of the other modules.

11.

12. System (800, 1000) according to one of claims 7 and 10, comprising several fifth air blowing modules (500). System (800, 1000) according to claims 10 and 11 in combination, comprising several sixth refrigeration modules (600), each refrigeration module being suitable for being connected to the air treatment unit (510) of a respective fifth air blowing module (500).

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