FR2504965A1 - INSTALLATION FOR NUCLEAR, BIOLOGICAL AND CHEMICAL PROTECTION OF AN UNDERGROUND PARKING - Google Patents

Abstract

THE INSTALLATION INCLUDES WALLS WITH WATERTIGHT DOORS DIVIDING INTO ROOMS EACH LEVEL OF THE PARKING - A WELL 9 DIGGED INTO THE GROUND OUTSIDE THE FRAME 11 OF THE PARKING AND CONTAINING A TECHNICAL COLUMN 12 PREFABRICATED, MONOLITHIC AND COMPARTMENTAL, FLOODED IN A CONCRETE ENVELOPE 33 WHICH IS CAST ON SITE BY RESERVING ACCESS PASSAGES 17, 21, 23 THROUGH THE SAID FRAME, THE COLUMN INCLUDING IN PARTICULAR A HELICOIDAL STAIRCASE 13, A FRESH AIR INTAKE DUCT 14 AND AN EXHAUST DUCT AIR USE 15 - AND AT LEAST ONE INTERIOR TECHNICAL CABIN 34-35 PER LEVEL DIMENSIONED TO THE TEMPLATE OF THE EXISTING ACCESS RAMPS OF THE PARKING AND PREFERREDLY LIMITED TO THE GROUND SURFACE OF AN AUTOMOTIVE SITE.

Description

2 J 34965

  Installation for nuclear protection,

  biological and chemical of an underground park.

  The object of the present invention is to

  green underground car parks with shelters for

  nuclear, biological and chemical protection.

  It then offers an adaptation installation that can be prefabricated and installed in any case in a simple, economical way,

fast and effective.

  In accordance with the invention, the installation comprises: walls fitted with watertight doors and installed in the car park to divide each level into rooms whose occupancy capacity is on a human scale,

  a well dug in the ground at the ex-

  inside the parking structure and containing a prefabricated, monolithic and compartmentalized technical column, embedded in a concrete envelope which is poured on site, reserving passages at each level that this column serves opposite at least one room of access crossing said framework, the column comprising in particular a helical staircase with bearings in front of the access passages, a sheath of fresh air intake and a sheath of exhaust of used air

  and at least one interior technical cabin

  re by level, sized to the size of the existing access ramps to the car park and preferably limited to the floor area of an automobile location, this cabin comprising a machine room and a ventilation room connected to the two aforementioned sound systems,

  as well as an airlock connecting the room (s) to the staircase.

  In addition, according to a preferred embodiment, the fresh air intake duct of the column cooperates with a stack of prefiltering rooms

2 '304965

  which are each connected to the filters in the ventilation room of the technical cabin at the same level, the fresh air intake duct opens to the outside via a mouth located near the staircase hatch, while the duct evacuation has, at its upper part, a deflection by laauelle it opens to the outside by a mouth, thus

  arranged at a distance from the inlet mouth; the instal-

  lation comprises two interior technical cabins that can be connected to each other, the first comprising the airlock and a machinery chamber in which there is in particular a large-capacity fuel tank and a generator, while the second comprises a filter compartment and with fans as well as a control chamber, the airlock having, on the one hand, a door opening onto the room or rooms and, on the other hand, two doors opening respectively onto the staircase and

on the machinery room.

  Advantageously, the access nassaaeq between the column and the cabin of each level are made up of corridor elements and conduits crossing holes in the concrete or masonry framework of the car park and welded, at one end, to the metal staircase and the two metal sheaths

  respectively, at the other end, on the metal wall-

  liaue of the cabin, the concrete then being poured between said column and the wall of the well and a joint, in particular made of resin, then being injected through at least one hole of the aforementioned elements between them

and the wall of the openings.

  Various other features and benefits

  of the invention appear moreover from the description

detailed below.

  An embodiment of the subject of the invention is shown, by way of example not

restrictive, in the attached drawing.

On this drawing

  Figure 1 is a schematic plan view

  tick showing a parking level equipped with the instal-

lation according to the invention.

  Figure 2 is an enlarged plan view illustrating a well of the installation and the cabins

  cooperating for a parking level.

  Figure 3 is a sectional elevation

  oartielle taken along liqre III-III of figure 2.

  Figure 4 is another sectional elevation

  partial statement taken along line IV-IV of the

figure 2.

  As shown in Figure 1, each level of underground parking 1 has walls 2 and 3 separating rooms 4 1, 4 2, 4 3, 4 4

  whose occupancy capacity is on a human scale.

  These rooms are normally served, through openings 5 1, 5 2, 5 3, 5 4, by aisles 6 of a communication network to which it is possible to access, for vehicles, By inclined ramps and, for pedestrians, by internal stairs, these

  ramps and stairs not shown in the drawing.

  To transform these rooms into shelters for protection N B C, it must first be able to isolate them with perfect sealing from each other; for this purpose, tightly closed doors 7 1, 7 2, 7 3, 7.4 and 8 1, 8 2, 8 3, 8 4 are provided to close the aforementioned openings 5 Furthermore, it is necessary to be able, on the one hand , allow the population to go to each shelter and exit to the outside while respecting the NBC safety instructions, on the other hand, change the stale air of the shelter considered and replace it with fresh air suitably filtered For this purpose, wells 9 1, 9 2, 9 3; 9 4 are dug to serve the same location of the Super Dosed levels of the corresponding rooms 4 1, 4 2, 4 3, 4 4 and cabins 10 1, 10.2, 10 3, 10 4 are located at this location

  said levels to cooperate with said Duits.

  As shown in Figures 2 to 4, each well 9 is dug outside the framework 11 of the car park, generally in reinforced concrete, from the ground surface to the lowest level This well 9 contains a technical column 12, refurbished in metal sheet metal, reinforced concrete or other; the column is monolithic and compartmentalized; it includes a helical staircase 13, a fresh air intake duct 14 and a spent air discharge duct 15 Opposite each level, the staircase 13 has a landing 16 on which, on the one hand , a corridor element 17 passing through a hole 18 in the frame 11 and secured to the cage of this staircase, on the other hand, an inspection door 19 opening onto a pre-filtration room 20 interposed between the intake duct fresh air 14 and a pipe element 21 passing through a bore 22 of the frame 11 Just as the pipe element 21 is integral with the wall of the room 20 communicating with the intake duct 14, another

  pipe element 23 is integral with the evacuation sheath

  cuation 15 and crosses a hole 24 in the frame 11.

  At ground level (Figure 4), column 12

  is surrounded by a fence 25 provided with a door 26.

  A hatch 27 normally closes the staircase in order to be opened only in the event of service; in any case, the helical shape of the staircase prevents radioactive dust which could pass through this hatch from reaching the lower levels In addition, the inlet mouth 28 of the sheath 14 is provided with a grid 29 located in the enclosure defined by closure; on the other hand, the upper part of the sheath 15

  is integral with a deviation 30 extending laterally-

  lying in the ground and communicating with the outside by an evacuation opening 31 provided with a grid 32 located at a sufficient distance from the previous one for

avoid pollution.

  When the column 12 is in place and connected to the interior booths 10, as described below, concrete is poured around it to fill the well and constitute an envelope or

protective shell 33.

  As can be clearly seen in FIGS. 2 and 3, the installation comprises at each level on an automobile location at least one interior technical cabin 10; in reality, in the example shown, two cabins 34 and 35, juxtaposed and connectable to each other, are provided to be able to

  each be brought entirely by the communication network

  cation of the car park, that is to say without difficulty using the inclined ramps, aisles 6 and openings 5 These cabins 34 and 35 are preferably metallic, but they can also be made of any other material of the moment that the conditions of

  resistance and tightness are respected.

  The cabin 34 includes an airlock 36 and a machinery chamber 37 in which are installed a large-capacity fuel tank 38 and a generator 39 of sufficient power to meet the needs of the corresponding room 4 The airlock 36 has a door 40 making it communicate with said room

  and two other doors 41 and 42 providing respective access-

  ment to the bedroom 37 and to the corridor element 17 serving the staircase The Dortes are watertight and at least the door 42 is provided with a pressure relief valve allowing the airlock to be put through the atnosnhérique oression outside 4 riere, then when it is located in the room in question, in a high pressure as soon as

said door 42 is closed.

  The cabin 35 comprises a compartment 43 in which filters 44 are installed in parallel and a ventilation device 45 supplied, through these, by a pipe 46 connected to the prefilters of the chamber 20 connected to the intake duct 14 ; the ventilation device 45 delivers fresh air into the room 4 considered, the stale air escaping through pressure relief valves to a pipe, not shown, connected to the exhaust duct 15 The cabin 35 also includes a control chamber 47, a door 48 of which opens onto room 4 and which provides access to the filters 44, to the ventilation device 46 and to their equipment, contained in

compartment 43.

  Cabins 34 and 35 on each level are connected to column 12 by means of elements 17, 21 and 23 Thus, after installation, the corridor element 17 is welded at its ends to the stairwell and the airlock 36 , the pipe element 21 on the wall of the prefiltration room 20 and the pipe 46, the pipe element 23 on the evacuation sheath 15 and the exhaust pipe or the wall of the chamber 37, The tight connection thus being ensured between the external column 12 and the interior cabins 34, 35, the concrete is poured between the wall of the nights 9 and the said column to constitute the protective envelope 33 Then, holes are drilled in the elements 17, 21 and 23 for

  inject a seal, in resin for example, between these elements

  elements and the wall of the holes 18, 22 and 24.

  The invention is not limited to the form of

  realization shown and described in detail, because different

  its modifications can be made without leaving

of his frame.

Claims (5)

CLAIMS ION 1 Installation for the nuclear, biological and chemical protection of an underground car park, characterized in that it comprises: walls (2,3) provided with watertight doors (7,8) and installed in the car park for divide each level into rooms (4 1 to 4 4) whose occupancy capacity is on a human scale, a well (9) dug in the ground outside the framework (11) of the car park and containing a prefabricated, monolithic and compartmentalized technical column (12), embedded in a concrete envelope (33) which is poured on site by reserving, at each level that this column serves opposite at least one room, passages for access (17, 21, 23) passing through said framework, the column comprising in particular a helical staircase (13) with bearings (16) in front of the access passages, a fresh air intake duct (14) and a duct exhaust air (15), and at least one interior technical cabin (10) per level, dimensioned in g abarit from the existing access ramps to the car park and preferably limited to the floor area of an automobile location, this cabin comprising a machine room (37) and a ventilation room (43) connected to the two above-mentioned ducts tees, as well as an airlock (36) connecting the room (s) to 1 staircase.   2. Installation according to claim 1, characterized in that the fresh air intake sheath (14) of the column (12) cooperates with a stack of prefiltering rooms (20) which are each connected to the filters (44 ) the ventilation room (43) of the technical cabin of the same level.   3. Installation according to claim 1, characterized in that the fresh air intake duct <13) opens to the outside by a mouth (28) located near the hatch (27) of the staircase (13 ), while the evacuation sheath (15) has, at its upper part, a deflection (30) by which it opens to the outside by a mouth (31) thus disposed at   distance from the intake opening (28).   4. Installation according to claim 1,   characterized in that it comprises two technical cabins   internal spaces (34, 35) connectable to each other, the first (34) comprising the airlock (36) and a machinery chamber (37) in which there is in particular a large capacity fuel tank (38) and a generator (37), while the second (35)   includes a compartment (43) with filters (44) and ventilated   readers (45) and a control chamber (47), the airlock (36) having, on the one hand, a door (40) opening onto the room (s) and, on the other hand, two doors ( 42, 41) opening respectively onto the staircase (13) and onto the machinery room (37).   5 Installation according to claim 1, characterized in that the access passages between the column and the cabin of each level are constituted by corridor elements (17) and pipes (21, 23), passing through holes (18, 22, 24) of the framework (11) concreted or masonry of the parking lot and welded, at one end, to the metal stairwell and the two metal sheaths, respectively, at the other end, to the metal wall of the cabin, the concrete (33) then being poured between said column and the wall of the well and a seal, in particular made of resin, then being injected through at least one hole in the   aforementioned elements between them and the wall of the ment.