A fire is a terrible incident that results in the loss of property, and sometimes life. Naturally, any source of ignition should be eliminated. For this, an OU-3 fire extinguisher may be suitable.
The principle of operation of the device and its technical characteristics
This device works very simply. The OU-3 fire extinguisher operates by displacing carbon dioxide from the cylinder , which is under pressure. After the bolt trigger is activated, carbon dioxide through the siphon tube moves to the bell. If in a calm state it has a liquefied appearance, then at the moment of action it turns into gas.
A feature of such a fire extinguisher is the instantaneous cooling of the combustion zone. In addition, the gas-air medium that burns is rapidly diluted with inert CO2. As a result, combustion stops.
The OU-3 fire extinguisher has the following characteristics:
- The length of the jet is 2.1 m.
- The capacity of the flask is 4.3 liters.
- The charge goes out in 8 seconds.
- The mass of the device, ready to use, is 12.5 kg.
- Use temperature - from - 40 to +50 degrees.
- The service life guaranteed by the manufacturer is 1 year from the date of issue.
Scope of application
The OU-3 fire extinguisher is effective for extinguishing fires where water-based apparatus cannot be used.
It is used in the following cases:
1. In museums and galleries, where valuable exhibits are stored that can be damaged by water.
2. For extinguishing electrical installations whose voltage does not exceed 1000 V.
3. To eliminate fire in trolleybuses, trams, trains.
4. For extinguishing gaseous, liquid and solid combustible substances.
You can use such a fire extinguisher both indoors and outdoors.
Advantages, Disadvantages and Precautions
Note that such an apparatus has certain advantages:
- Leaves no residue after extinguishing.
- It makes it possible to preserve valuable items that water spoils.
The only drawback of this device is that it cannot be used to extinguish those substances that burn even without air. Here, carbon dioxide will be simply useless.
As for the safety of the application, the carbon dioxide fire extinguisher "OU-3" has some operational requirements:
1. If it is necessary to extinguish a live installation, do not approach it closer than one meter.
2. Do not recharge or repair the device yourself. There are special service centers for this.
3. It is not recommended to use the device if there is no seal on it.
4. During the release of CO 2, do not point the bell at people, as the gas temperature is -60 degrees.
5. Do not leave the device in direct sunlight.
6. At least twice a year, check the operability of the device.
Instructions for use
The OU-3 fire extinguisher, the characteristics of which are discussed above, must be used strictly according to the requirements:
1. Bring the fire extinguisher to the fire, taking into account the minimum permissible distance.
2. Point the bell in the direction where the fire is, pull out the pin and press on the handle that actuates the valve of the locking device.
3. If the fire did not occur indoors, then try to direct the bell so that carbon dioxide does not come out against the wind.
4. After extinguishing, the device should be taken for refueling.
Please note that a fire extinguisher can build up heat and static electricity. Try to extinguish the fire so that carbon dioxide does not fall on you, since it has a toxic effect.
That's all the features of the application of the presented device. Good luck