WO2013083096A1 - Stationary fire extinguishing system, especially for tunnels and enclosed areas - Google Patents
Stationary fire extinguishing system, especially for tunnels and enclosed areas Download PDFInfo
- Publication number
- WO2013083096A1 WO2013083096A1 PCT/CZ2011/000113 CZ2011000113W WO2013083096A1 WO 2013083096 A1 WO2013083096 A1 WO 2013083096A1 CZ 2011000113 W CZ2011000113 W CZ 2011000113W WO 2013083096 A1 WO2013083096 A1 WO 2013083096A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- fire
- fire fighting
- extinguishing
- tunnel
- units
- Prior art date
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Classifications
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C3/00—Fire prevention, containment or extinguishing specially adapted for particular objects or places
- A62C3/02—Fire prevention, containment or extinguishing specially adapted for particular objects or places for area conflagrations, e.g. forest fires, subterranean fires
- A62C3/0221—Fire prevention, containment or extinguishing specially adapted for particular objects or places for area conflagrations, e.g. forest fires, subterranean fires for tunnels
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C19/00—Hand fire-extinguishers in which the extinguishing substance is expelled by an explosion; Exploding containers thrown into the fire
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C3/00—Fire prevention, containment or extinguishing specially adapted for particular objects or places
- A62C3/002—Fire prevention, containment or extinguishing specially adapted for particular objects or places for warehouses, storage areas or other installations for storing goods
Definitions
- the present invention relates to a stable fire extinguishing system, especially for tunnels and enclosed areas, comprising a fire fighting unit connected to sensors, control module, and power supply, using the explosion to disperse an extinguishing powder agent to extinguish fire.
- Trie s stable fire ⁇ ( extinguishing systems hitherto known, which have been used in road tunnels utilize various extinguishing agents and methods for extinguishing fire in these areas.
- Tfii examples of the devices hitherto used and known are the devices affecting wide areas (sprinklers, foams) where there is a disadvantage of not targeting the centre of the fire. There is a substantial lag time at- the start for extinguishing all flammables, for example liquids, and they can also endanger persons or animals in the intervened area.
- the devices intended for targeted control of the centre of the fire for example according to the Japanese Patent Application No. JP10066738.1998- 03-10, are not efficient enough to extinguish large fires.
- US Patent Application No. 60/710 ,644 describes a tunhel fire-extinguishing system that detects the fire in the tunnel, isolates the fire in a section and then tries to suppress the fire using an aerosol.
- the fire protection of a tunnel comprises the fire detection system arranged in a tunnel, numerous mobile walls arranged in the axial direction in the tunnel, with mobile walls that can be dropped towards the roadway, further a control unit connected to a detection system and to the mobile walls system closing a tunnel section, and to the aerosol generators.
- the fire can be isolated in the zone between two walls dropped to the bottom of the tunnel, and extinguished using the aerosol. In this manner, prevention of fire spreading into other parts of the tunnel is achieved.
- the disadvantage is that in this closed zone, close to the centre of the fire, persons might be trapped in their cars without any chance of escaping or survival because of the high smoke concentration.
- Another application WO/2008/053254 describes an automatic autonomous fire extinguishing device, with the aim of minimizing the time to extinguish the fire. Therefore it concerns the elimination of the period from the time of an automatic fire detection that is achieved using appropriate temperature sensors, flame sensors, IR, etc.
- the device is intended to finish fire extinguishing without any intervention of machinery or personnel. This can be achieved in an enclosed space where the centre of fire is localized and the fire must be extinguished with appropriate extihguishiri3 ⁇ 4 medium (powder, foam, liquid). Extinguishing is carried out by activating an explosive charge placed in the middle of a container with the extinguishing medium.
- the cbntainer is shattered when a fire is automatically detected by one or more sensors and the charge is activated.
- the described solution has the disadvantages of zero resistance to false alarms of fire sensors which is unacceptable in a tunnel, and uncontrolled directing of extinguishing agent which significantly decreases the extinguishment efficiency. Also an unprotected container with extinguishing agent can be damaged easily (mechanically, by the fire, etc.) decreasing the extinguishment efficiency as well.
- the stable fire extinguishing system especially for tunnels and enclosed areas, comprising the fire fighting unit connected to sensors, control module and power supply, using the explosion to disperse the extinguishing powder agent to extinguish fire characterized in that the fire fighting units are arranged on both the walls of a tunnel so that every fire fighting unit is placed in front with the middle point between two adjacent fire fighting Units arranged on the opposite wall of the tunnel, while every fire fighting unit comprises at least two fire fighting segments with the extinguishing charge arranged inside the hermetically sealed container together with the explosive charge, while every fire fighting unit comprises the switching module with the sensors for fast and direct indication of the centre of fire, where the individual fire fighting units are connected to the control module which is connected both to the power supply and to the closed data network!
- the 1 advantages of the described stable fire consist of a very fast detection as well as a precise localization of the developing fire, where the skilled operator eliminates false alarms and starts extinguishing the fire focusing in the centre of fire within a very short time and with the capacity of extinguishing agent sufficient for large fires of almost any class.
- the operator releases the particular doses of extinguishing agent in order to extinguish the fire as soon as possible wit minimum damages incurred.
- the application of the extinguishing agent neither threatens life nor leaves lasting health effects:
- the fire extinguishment segment preferably consist of the box equipped with bolts on the front side where the second bolts form the rotation axis of shutters intended for the protection of extinguishing charge which is arranged in the hermetically sealed container placed in the fire fighting segment.
- the contact surface of the shutters is as large as possible, which can be preferably achieved by shaping the shutters in the form of a curve shape, for example wavy shape or cog shape.
- the particular fire fighting units are preferably arranged in the tops of a triangle, as shown in the Figure 1.
- the distances between the adjacent fire fighting units are preferably of 1 to 10 m, and the fire fighting unit placed on the opposite wall of a tunnel is arranged in the middle of this distance. This arrangement results in a direct impact onto the extinguished object from all the sides.
- This arrangement of fire fighting uhits has a considerable advantage of sufficient amount of extinguishing agent always on disposal to control even large fires on the objects of large size, for example a truck. This can be enabled by the operator by activating number of the fire fighting units.
- Another advantage of the proposed solution is that almost no construction modifications are heeded: After mounting the fire fighting' units onto the wall or the ceiling, the device only requires a connection to power supply and its own closed data network.
- Figure 1 illustrates the schematic arrangement of the stable fire extinguishing system with the power supply and the closed data network within a tunnel
- Figure 2 illustrates the fire fighting unit with the particular segments
- Figure 3 illustrates the fire fighting segment with the container with the extinguishing agent and the charge.
- the stable extinguishing fire system comprises fire fighting units 1, arranged with distances at both the walls 3 of a tunnel so that every fire fighting unit 1 is placed on the wall 3 of a tunnel in front with the middle point between two opposite fire fighting units 1 placed on the opposite wall 3 of a tunnel, as it is given in the Figure 1.
- every fire fighting unit 1 comprises several fire fighting segments 8 with hermetically sealed containers 11 charged with powder extinguishing agent, see Figure 2.
- Every fire fighting unit comprises the sensors (temperature sensor, flame sensor, etc.) for fast and direct indication of the centre of fire.
- the control module 6 itself is connected through switching modules 13 both to the power supply 2 and to the closed data network 4 for data transmission. Operating of n the system i is ensured by individual application allocated in the computer (control module 6), in the tunnel control room.
- Every fire fighting unit 1 is equipped with a switching module 13 with at least two independent sensors intended for fire detection (e.g. flame, temperature, etc.) as an integral part.
- Exceeding the set quiescent values of these sensors at particular fire fighting units is signalized to the operator using the control application software and providing both audio and graphic signals and thus defining exactly the fire area.
- the operator checks the signalized issue using another independent source (e.g. a camera) and starts the fire extinguishment entering a command to the control application.
- the command induces the ignition of one segment 8 of the chosen fire fighting unit 1 ensuring the uniform dispersion of one extinguishing agent (powder) dose in the area in front of this fire fighting unit .
- the operator Using the information from the sensors, the operator continues to launch the other segments 8 of the same fire fighting unit or another fire fighting units until fire is completely extinguished. For re-establishing traffic, after the fire is extinguished and the car wrecks are removed, all is needed is to vacuum the used extinguishing powder and to change the ignited segments 8 in the used fire fighting units t, or change the whole fire fighting nits 1 that can be reused after their recharge and inspection.
- the stable fire extinguishing system comprises the same construction elements as those described above.
- the particular fire fighting units 1 are arranged with distances at walls and/or ceilings, and they are connected one to another in the manner described above.
- the stable fire extinguishing device/system can be used for extinguishing fires' eithe ih tunnels or ' in manufacturing areas, storehouses, buildings, etc.
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- Health & Medical Sciences (AREA)
- Public Health (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Life Sciences & Earth Sciences (AREA)
- Biodiversity & Conservation Biology (AREA)
- Ecology (AREA)
- Forests & Forestry (AREA)
- Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)
- Fire Alarms (AREA)
Abstract
The stable fire extinguishing system, especially for tunnels and enclosed areas, comprising fire fighting unit (1) connected with sensors, and with the control module (6) through the switching module (13), and with the power supply (2), which use the explosion to disperse the powder extinguishing agent to extinguish fire. Its principle consist of the fire fighting units (1) arranged on both the walls (3) of a tunnel or enclosed area so that every fire fighting unit (1) is placed in front with the middle point between two adjacent fire fighting units (1) arranged on the opposite wall of the tunnel or enclosed area. Every fire fighting unit (1) comprises at least, two fire fighting segments (8) with the extinguishing charge arranged inside the hermetically sealed container (11) together with the explosive charge. Every fire fighting unit (1) comprises the switching module (13) with the sensors for fast and direct indication of the centre of fire. The particular fire fighting units (1) are connected to the control module (6) which is connected both to the power supply (2) and to the closed data network (4).
Description
STATIONARY FIRE EXTINGUISHING SYSTEM, ESPECIALLY FOR TUNNELS AND
ENCLOSED AREAS
Field of the Invention
The present invention relates to a stable fire extinguishing system, especially for tunnels and enclosed areas, comprising a fire fighting unit connected to sensors, control module, and power supply, using the explosion to disperse an extinguishing powder agent to extinguish fire.
Background of the Invention
Trie s ; stable fire~( extinguishing systems hitherto known, which have been used in road tunnels utilize various extinguishing agents and methods for extinguishing fire in these areas. Tfii examples of the devices hitherto used and known are the devices affecting wide areas (sprinklers, foams) where there is a disadvantage of not targeting the centre of the fire. There is a substantial lag time at- the start for extinguishing all flammables, for example liquids, and they can also endanger persons or animals in the intervened area. The devices intended for targeted control of the centre of the fire, for example according to the Japanese Patent Application No. JP10066738.1998- 03-10, are not efficient enough to extinguish large fires. The existing fire extingushing processes in tunnels have been based on the fact that in the case of presence of living beings the priority is to minimise spreading of harmful substances comprised in smoke. This is achieved by activating of ventilators placed in the tunnel's body. The disadvantage is that ' this ventilation of fire area; causes further fire spreading onto objects not yet affected, which are situated close to the fire.
US Patent Application No. 60/710 ,644 describes a tunhel fire-extinguishing system that detects the fire in the tunnel, isolates the fire in a section and then tries to suppress the fire using an aerosol. The fire protection of a tunnel according to this application comprises the fire detection system arranged in a tunnel, numerous mobile walls arranged in the axial direction in the tunnel, with mobile walls that can be dropped towards the roadway, further a control unit connected to a detection system and to the mobile walls system closing a tunnel section, and to the aerosol generators. Using this system, the fire can be isolated in the zone between two walls dropped to the bottom of the tunnel, and extinguished using
the aerosol. In this manner, prevention of fire spreading into other parts of the tunnel is achieved. The disadvantage is that in this closed zone, close to the centre of the fire, persons might be trapped in their cars without any chance of escaping or survival because of the high smoke concentration.
Another application WO/2008/053254 describes an automatic autonomous fire extinguishing device, with the aim of minimizing the time to extinguish the fire. Therefore it concerns the elimination of the period from the time of an automatic fire detection that is achieved using appropriate temperature sensors, flame sensors, IR, etc. The device is intended to finish fire extinguishing without any intervention of machinery or personnel. This can be achieved in an enclosed space where the centre of fire is localized and the fire must be extinguished with appropriate extihguishiri¾ medium (powder, foam, liquid). Extinguishing is carried out by activating an explosive charge placed in the middle of a container with the extinguishing medium. The cbntainer is shattered when a fire is automatically detected by one or more sensors and the charge is activated. The described solution has the disadvantages of zero resistance to false alarms of fire sensors which is unacceptable in a tunnel, and uncontrolled directing of extinguishing agent which significantly decreases the extinguishment efficiency. Also an unprotected container with extinguishing agent can be damaged easily (mechanically, by the fire, etc.) decreasing the extinguishment efficiency as well.
To complete it, we also name the use of extinguishing agent placed in a container and its dispersing with the use of explosive charge. This method is described in the Great Britain Patent No. 5405.
Summary of the Invention
The aim of the invention is to propose a stable fire extinguishing system placed in enclosed areas, especially in tunnels, Which provide very fast detection of developed fire, determination of its location, as well as very fast extinguishment. At the same time, due to the device a skilled operator is allowed to start extinguishing the fire focusing on the centre of the fire within a very short time, and with the capacity of extinguishing agent sufficient even for large fires of the A, B, and C classes according to the regulation EN2. The skilled operator eliminates false alarms and releases particular doses of extinguishing agent in order to extinguish the fire as soon as possible with minimal damages incurred.
The above mentioned disadvantages are eliminated by the stable fire extinguishing system, especially for tunnels and enclosed areas, comprising the fire fighting unit connected to sensors, control module and power supply, using the explosion to disperse the extinguishing powder agent to extinguish fire characterized in that the fire fighting units are arranged on both the walls of a tunnel so that every fire fighting unit is placed in front with the middle point between two adjacent fire fighting Units arranged on the opposite wall of the tunnel, while every fire fighting unit comprises at least two fire fighting segments with the extinguishing charge arranged inside the hermetically sealed container together with the explosive charge, while every fire fighting unit comprises the switching module with the sensors for fast and direct indication of the centre of fire, where the individual fire fighting units are connected to the control module which is connected both to the power supply and to the closed data network! The1 advantages of the described stable fire consist of a very fast detection as well as a precise localization of the developing fire, where the skilled operator eliminates false alarms and starts extinguishing the fire focusing in the centre of fire within a very short time and with the capacity of extinguishing agent sufficient for large fires of almost any class. The operator releases the particular doses of extinguishing agent in order to extinguish the fire as soon as possible wit minimum damages incurred. The application of the extinguishing agent neither threatens life nor leaves lasting health effects:
To protect the fire fighting units against unauthorized manipulation, for the fire extinguishment segment preferably consist of the box equipped with bolts on the front side where the second bolts form the rotation axis of shutters intended for the protection of extinguishing charge which is arranged in the hermetically sealed container placed in the fire fighting segment. To ensure uniform dispersion of extinguishing agent, preferably the contact surface of the shutters is as large as possible, which can be preferably achieved by shaping the shutters in the form of a curve shape, for example wavy shape or cog shape.
To ensure direct impact of extinguishing agent onto object that is being extinguished, the particular fire fighting units are preferably arranged in the tops of a triangle, as shown in
the Figure 1. The distances between the adjacent fire fighting units are preferably of 1 to 10 m, and the fire fighting unit placed on the opposite wall of a tunnel is arranged in the middle of this distance. This arrangement results in a direct impact onto the extinguished object from all the sides.
This arrangement of fire fighting uhits has a considerable advantage of sufficient amount of extinguishing agent always on disposal to control even large fires on the objects of large size, for example a truck. This can be enabled by the operator by activating number of the fire fighting units.
Furthermore, the extinguishing agent (powder) can be easily removed from the fire area after the fire-fighting: The action is always fast thereby ho damage to tunnel, including the roadway and other equipment occurs. There is no need to close the tunnel for a lengthy period. The used fire fighting units are changed and the proposed fire extinguishing system is fully operational after reopening the tunnel.
Another advantage of the proposed solution is that almost no construction modifications are heeded: After mounting the fire fighting' units onto the wall or the ceiling, the device only requires a connection to power supply and its own closed data network.
Brief description of the drawings
The invention is now described in more details on the drawing, where Figure 1 illustrates the schematic arrangement of the stable fire extinguishing system with the power supply and the closed data network within a tunnel, Figure 2 illustrates the fire fighting unit with the particular segments, and Figure 3 illustrates the fire fighting segment with the container with the extinguishing agent and the charge.
Preferred embodiments of the invention
The presented examples illustrate the preferred embodiments of the stable extinguishing fire system but they do not limit the scope of the invention.
The stable extinguishing fire system, especially for tunnels and enclosed areas, is illustrated in the Figure 1, Fig. 2. and Fig. 3. In this embodiment, the stable extinguishing fire system comprises fire fighting units 1, arranged with distances at both the walls 3 of a
tunnel so that every fire fighting unit 1 is placed on the wall 3 of a tunnel in front with the middle point between two opposite fire fighting units 1 placed on the opposite wall 3 of a tunnel, as it is given in the Figure 1. According to the extinguishing performance, every fire fighting unit 1 comprises several fire fighting segments 8 with hermetically sealed containers 11 charged with powder extinguishing agent, see Figure 2. Inside the container H with the powder extinguishing agent, electrically ignited charge is arranged (it is not illustrated in the figures) ensuring the power for dispersing the powder extinguishing agent. The individual fire fighting segments 8 are fitted with shutters 10 to protect the extinguishment containers 1i against unauthorized manipulation as well as against fire. Every fire fighting unit comprises the sensors (temperature sensor, flame sensor, etc.) for fast and direct indication of the centre of fire. The control module 6 itself is connected through switching modules 13 both to the power supply 2 and to the closed data network 4 for data transmission. Operating of n the system i is ensured by individual application allocated in the computer (control module 6), in the tunnel control room.
Every fire fighting unit 1 is equipped with a switching module 13 with at least two independent sensors intended for fire detection (e.g. flame, temperature, etc.) as an integral part. Exceeding the set quiescent values of these sensors at particular fire fighting units is signalized to the operator using the control application software and providing both audio and graphic signals and thus defining exactly the fire area. The operator checks the signalized issue using another independent source (e.g. a camera) and starts the fire extinguishment entering a command to the control application. The command induces the ignition of one segment 8 of the chosen fire fighting unit 1 ensuring the uniform dispersion of one extinguishing agent (powder) dose in the area in front of this fire fighting unit . Using the information from the sensors, the operator continues to launch the other segments 8 of the same fire fighting unit or another fire fighting units until fire is completely extinguished. For re-establishing traffic, after the fire is extinguished and the car wrecks are removed, all is needed is to vacuum the used extinguishing powder and to change the ignited segments 8 in the used fire fighting units t, or change the whole fire fighting nits 1 that can be reused after their recharge and inspection.
Another option is to install the above mentioned stable fire extinguishing system into manufacturing areas, storehouses, buildings. The stable fire extinguishing system comprises the same construction elements as those described above. The particular fire fighting units 1 are arranged with distances at walls and/or ceilings, and they are
connected one to another in the manner described above.
Industrial Applicability
The stable fire extinguishing device/system, especially for tunnels and enclosed areas, can be used for extinguishing fires' eithe ih tunnels or ' in manufacturing areas, storehouses, buildings, etc.
Claims
1. The stable fire extinguishing system, especially for tunnels and enclosed areas, comprising fire fighting unit (1) connected with sensors, and with control module (6), and with power supply (2), which use the explosion to disperse the powder extinguishing agent to extinguish the fire, characterized in that the fire fighting units (1) are arranged on both walls (3) of the tunnel or enclosed area so that every fire fighting unit (1) is placed in front with the middle point between two adjacent fire fighting units (1) arranged on the opposite wall (3) of a tunnel or enclosed area, while every fire fighting unit (1) comprises at least two fire fighting segments (8) with the extinguishing charge arranged inside the hermetically sealed container (11) together with the explosive charge, while every fire fighting- unit (1) comprises the switching module (13) with the sensors for fast and direct indication of the centre of fire, while the particular fire fighting units (1) are further connected to the control module (6) which is connected both to the power supply (2) and to the closed data network (4).
2. The stable fire extinguishing system according to claim 1 characterized in that the fire fighting segment (8) consist of the box equipped on the front side with the first bolts (9), and the second bolts (12) on which the shutters (10) are arranged in a rotating manner.
3. The stable fire extinguishing system according to claims 1 and 2 characterized in that the contact surface of the shutters (10) is of a curve shape, preferably wavy shape or cog shape.
4. The stable fire extinguishing system according to claims 1 or 2 characterized in that the extinguishing charge is the powder extinguishing agent.
5. The stable fire extinguishing system according to claims 1 or 2 characterized in that the fire fighting units (1) are arranged on the ceilings of a space. List of reference signs
1 fire fighting unit
2 power supply
3 wall of a tunnel
4 closed data network
5 roadway
6 processor/control module
7 display
8 fire fighting segment
9 first bolts
10 shutters
11 container with extinguishing charge and explosive charge
12 second bolts
13 switching module
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CZ2011/000113 WO2013083096A1 (en) | 2011-12-05 | 2011-12-05 | Stationary fire extinguishing system, especially for tunnels and enclosed areas |
| CZ20120002A CZ20122A3 (en) | 2011-12-05 | 2011-12-05 | Stable fire extinguishing system, especially for tunnels and closed spaces |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CZ2011/000113 WO2013083096A1 (en) | 2011-12-05 | 2011-12-05 | Stationary fire extinguishing system, especially for tunnels and enclosed areas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2013083096A1 true WO2013083096A1 (en) | 2013-06-13 |
Family
ID=45528856
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/CZ2011/000113 WO2013083096A1 (en) | 2011-12-05 | 2011-12-05 | Stationary fire extinguishing system, especially for tunnels and enclosed areas |
Country Status (2)
| Country | Link |
|---|---|
| CZ (1) | CZ20122A3 (en) |
| WO (1) | WO2013083096A1 (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB189905405A (en) | 1899-03-13 | 1900-01-27 | Louis Bertling | An Improved Method of and Means for Extinguishing Fire. |
| JPH1066738A (en) | 1996-10-18 | 1998-03-10 | Nohmi Bosai Ltd | Elevated fire extinguishing device |
| EP1312392A1 (en) * | 2001-11-15 | 2003-05-21 | Wagner Alarm- und Sicherungssysteme GmbH | Method and device for extinguishing fires in tunnels |
| US20070039744A1 (en) * | 2005-08-22 | 2007-02-22 | Fireaway Llc | Tunnel fire protection system |
| WO2008053254A1 (en) | 2006-10-31 | 2008-05-08 | Faruk Cerimagic | Automatic emerging fire extinguisher |
-
2011
- 2011-12-05 CZ CZ20120002A patent/CZ20122A3/en unknown
- 2011-12-05 WO PCT/CZ2011/000113 patent/WO2013083096A1/en active Application Filing
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB189905405A (en) | 1899-03-13 | 1900-01-27 | Louis Bertling | An Improved Method of and Means for Extinguishing Fire. |
| JPH1066738A (en) | 1996-10-18 | 1998-03-10 | Nohmi Bosai Ltd | Elevated fire extinguishing device |
| EP1312392A1 (en) * | 2001-11-15 | 2003-05-21 | Wagner Alarm- und Sicherungssysteme GmbH | Method and device for extinguishing fires in tunnels |
| US20070039744A1 (en) * | 2005-08-22 | 2007-02-22 | Fireaway Llc | Tunnel fire protection system |
| WO2008053254A1 (en) | 2006-10-31 | 2008-05-08 | Faruk Cerimagic | Automatic emerging fire extinguisher |
Also Published As
| Publication number | Publication date |
|---|---|
| CZ20122A3 (en) | 2013-07-10 |
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