Instructions for use OU 3. Carbon dioxide fire extinguisher, portable

Carbon dioxide fire extinguisher OU-3- the fire extinguisher cylinder is designed for 5 liters of fire extinguishing agent (CO2 carbon dioxide). This type of carbon dioxide fire extinguishers is used in trucks and cars, in small industrial and residential premises with a volume of not more than 50 m2 (at the rate of 1 liter of extinguishing agent per 10 m2 of premises).

Carbon dioxide fire extinguishers OU-3 are considered universal for use by a man or a woman due to the small weight of the cylinder. This type of fire extinguishers are designed to extinguish fires of substances, the combustion of which cannot occur without access to oxygen, fires of electrical installations that are under voltage of not more than 1000 V, liquid and gaseous substances (class B, C). Fire shields are equipped with carbon dioxide fire extinguishers in paint shops, warehouses, gas stations and on the territory of industrial enterprises.

Optional equipment:

Automotive fire extinguisher OU-1 and OU-2

Carbon dioxide fire extinguisher OU-3 - the fire extinguisher cylinder is designed for 5 liters of fire extinguishing agent (CO2 carbon dioxide). This type of carbon dioxide fire extinguishers is used in trucks and cars, in small industrial and residential premises with a volume of not more than 50 m2 (at the rate of 1 liter of extinguishing agent per 10 m2 of premises). Carbon dioxide fire extinguishers OU-3 are considered universal for use by a man or a woman due to the small weight of the cylinder. This type of fire extinguishers are designed to extinguish fires of substances, the combustion of which cannot occur without access to oxygen, fires of electrical installations that are under voltage of not more than 1000 V, liquid and gaseous substances (class B, C). Fire shields are equipped with carbon dioxide fire extinguishers in paint shops, warehouses, gas stations and on the territory of industrial enterprises.

A fire is a terrible incident that results in the loss of property, and sometimes life. Naturally, any source of ignition should be eliminated. An OU-3 fire extinguisher may be suitable for this.

The principle of operation of the device and its technical characteristics

This device works very simply. The fire extinguisher "OU-3" operates by displacing it from the cylinder, which is under pressure in it. After the shutter trigger mechanism works, carbon dioxide moves through the siphon tube to the socket. If it is in a liquefied state at rest, then at the moment of action it turns into a gas.

A feature of such a fire extinguisher is the instantaneous cooling of the combustion zone. In addition, the gas-air environment that blazes is quickly diluted with inert CO2. As a result, combustion stops.

Fire extinguisher "OU-3" has the following characteristics:

Jet length - 2.1 m.

The capacity of the flask is 4.3 liters.

The charge comes out in 8 seconds.

The weight of the device ready for use is 12.5 kg.

Use temperature - from - 40 to +50 degrees.

The term of operation, which is guaranteed by the manufacturer, is 1 year from the date of issue.

Scope of application

The OU-3 fire extinguisher is effective for where water-based fire extinguishers cannot be used.

It applies 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, the voltage in which does not exceed 1000 V.

3. To eliminate fire in trolleybuses, trams, trains.

4. For extinguishing gaseous, liquid and solid combustible substances.

This fire extinguisher can be used both indoors and outdoors.

Advantages, disadvantages and precautions

Note that such a device has certain advantages:

Leaves no traces after quenching.

The only drawback of the device in question 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 use, the carbon dioxide fire extinguisher "OU-3" has some operational requirements:

1. If it is necessary to extinguish an electrical installation that is energized, then you should not approach it closer than one meter.

2. Do not recharge or repair the device yourself. For this, there are special service centers.

4. Do not point the bell at people during the release of CO 2, as the temperature of the gas is -60 degrees.

5. Do not leave the device in direct sunlight.

6. At least twice a year, check the operation 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 instructions:

1. Bring the fire extinguisher close to the source of fire, observing the minimum allowed distance.

2. Point the bell in the direction where the fire is located, pull out the pin and press the handle that activates the device.

3. If the fire did not occur indoors, then try to direct the socket so that carbon dioxide does not come out against the wind.

4. After the extinguishing is completed, the device should be taken for refueling.

Keep in mind that a fire extinguisher can build up heat stress and try to extinguish the fire in such a way that carbon dioxide does not fall on you, as it has a toxic effect.

That's all the features of the application of the presented device. Good luck!

The carbon dioxide fire extinguisher OU-3 is designed to extinguish the fire of substances whose combustion cannot occur without access to air, the fire of electrical installations under voltage not exceeding 10,000 V, liquid and gaseous substances (class B, C), fires in archives, museums, art galleries.

The carbon dioxide fire extinguisher OU-3 is not designed to extinguish the fire of substances that can burn without air (aluminum, magnesium and their alloys, sodium, potassium), chemicals and their mixtures, pyrophoric and polymeric materials, as well as other materials prone to smoldering inside the volume of the substance and burning without air access (cotton, sawdust, grass flour, pyroxylin, etc.)

Liquefied carbon dioxide (CO2) is used as a fire extinguishing agent, when carbon dioxide changes from a liquid state to a gaseous state, its volume increases by 400-500 times, accompanied by a sharp cooling to a temperature of -72 ° C and partial crystallization.

The effect of flame extinguishing is achieved in two ways: by lowering the temperature of the source of ignition below the ignition point, and by displacing oxygen from the combustion zone with non-combustible carbon dioxide.

Technical characteristics of carbon dioxide fire extinguisher OU-3

Charge weight, kg, not less than

Leak rate per year, gr, no more

Working pressure, MPa, not less than

Operating time, sec, not less

Throw length, m, not less than

Fire extinguishing ability *

Dimensions, mm

Weight, kg, no more

* 10V - burning 10 liters of gasoline with a layer of 3 cm, located in a baking sheet in the shape of a circle (13V - respectively 13 liters, 34V - 34 liters, etc.)

How to use a carbon dioxide fire extinguisher OU-3

Pull out the check.

Aim the bell at the flame.

Press the locking and starting device lever all the way.

When extinguishing a fire with an OU-3 carbon dioxide fire extinguisher, the following rules must be observed:

do not hold the fire extinguisher in a horizontal position or turn it upside down;

it is impossible to touch the bell with bare parts of the body, because the temperature on its surface drops to 60-70°C;

when extinguishing electrical installations under voltage, it is forbidden to bring the socket to them and the flame closer than 1 m.

Extinguishing is carried out from the windward side. It is allowed to repeatedly open and close the locking and starting device when extinguishing a fire.

Features of the use of a carbon dioxide fire extinguisher OU-3

The possibility of the appearance of significant thermal stresses (as a result of a sharp cooling of the extinguishing object).

Reduced efficiency of fire extinguishers at negative ambient temperatures (associated with a significant change in the pressure of carbon dioxide vapor with temperature changes).

Possibility of accumulation of static electricity charges on the fire extinguisher diffuser (especially if the diffuser is made of polymeric materials).

The danger of toxic effects of carbon dioxide vapor on the human body (when it enters the human body in large quantities, it causes dizziness and suffocation with loss of consciousness).

The danger of reducing the oxygen content in the air of the room as a result of the use of a carbon dioxide fire extinguisher (especially mobile ones).

Danger of frostbite due to a sharp decrease in the temperature of the fire extinguisher components.

Description Yarpozhinvest OU-3

Yarpozhinvest OU-3 carbon dioxide fire extinguishers are designed to extinguish various substances that cannot burn without oxygen, fires on electrified railway and urban transport, electrical installations under voltage up to 10,000 V, fires in museums, art galleries and archives, wide distribution in office premises in the presence of office equipment, as well as in the residential sector. The main advantage of Yarpozhinvest OU-3 carbon dioxide fire extinguishers is that carbon dioxide does not damage the extinguishing object and does not leave marks.

Yarpozhinvest OU-3 carbon dioxide fire extinguishers are used to extinguish the following substances:

flammable liquids (B);
combustible gases (C);
electrical equipment (E) energized up to 10,000 V.

Yarpozhinvest OU-3 carbon dioxide fire extinguishers are not used to extinguish:

solid combustible substances (A);
substances whose combustion can occur without access to oxygen (D), (aluminum, magnesium and their alloys, sodium, potassium);
electrical installations with voltages above 10,000 V.

Features of Yarpozhinvest OU-3

A carbon dioxide fire extinguisher is a high-pressure injection fire extinguisher with a charge of liquid carbon dioxide (according to GOST 8050-85), under saturated vapor pressure.

The operation of the fire extinguisher is based on the displacement of the carbon dioxide charge under the action of its own excess pressure, which is created when the fire extinguisher is filled. Carbon dioxide is in a cylinder under a pressure of 5.7 MPa (60 kgf/cm2) at an ambient temperature of +20C. The maximum working pressure in the cylinder at a temperature of +50C should not exceed 14.7 MPa (150 kgf/cm2).

The fire-extinguishing effect of carbon dioxide is based on cooling the combustion zone and diluting the combustible vapor-air medium with an inert (non-combustible) substance to concentrations at which the combustion reaction stops.

With annual control of the mass of the charge, the service life of the UO before recharging is 5 years. Recharging and maintenance is carried out at least once every 5 years. Charging, recharging, inspection and maintenance of the fire extinguisher should be carried out only at service stations that have the appropriate license.

Re-examination of a carbon dioxide fire extinguisher cylinder as a pressure vessel

The warranty period of operation of the fire extinguisher is 12 months. from the date of sale, but not more than 18 months. from the date of manufacture.

When using Yarpozhinvest OU-3 carbon dioxide fire extinguishers, the following precautions should be observed:

when extinguishing electrical installations, the distance to the socket must be at least 1 m;
avoid contact of the fire extinguisher socket with open parts of the body (-70C);
after using a carbon dioxide fire extinguisher, thoroughly ventilate the room.

Equipment Yarpozhinvest OU-3

fire extinguisher - 1 pc.,
bell - 1 pc.,
ejection tube - 1 pc.,
operation manual combined with a passport for a fire extinguisher - 1 pc.
Additional information In the event of a fire, you must pull out the pin, direct the socket towards the fire, press the lever of the locking device and start extinguishing the fire.

Specifications Yarpozhinvest OU-3

Unit: 1 piece
Dimensions (mm): 490x135x135
Weight (kg): 10.50
Fire class ALL
Hull capacity, l 4.02
Weight of carbon dioxide charge, kg 3-0.15
Fire-extinguishing capacity by class of fires: - model fire class B 34B
Jet length, I'm under 3
No flexible hose available
Duration of OTV supply, s, not less than 8
Working pressure, MPa 5.88
Operating temperature range, °С -40…+50
Overall dimensions, mm: - height 490 - diameter 135
Net weight (gross), kg, no more than 10.5
Leak rate per year, g no more than 50
Re-examination at least once every 5 years
Service life of a fire extinguisher, years 10

Complies with GOST R 51057-2001 " Fire fighting equipment. Fire extinguishers are portable. General technical requirements. Test Methods"

Description:

One of the most widely used fire extinguishers. Great as a car fire extinguisher, for those who want protection more reliable than the minimum allowable OU-2. Such a fire extinguisher is usually installed in switchboard and server rooms.

Carbon dioxide fire extinguishers not designed to extinguish solid combustible substances !!! Materials such as wood, paper, textiles, etc. after using a carbon dioxide fire extinguisher, they will continue to smolder and may catch fire again!

It is preferable to equip with carbon dioxide fire extinguishers electrical panel, server, fire panels in paint shops, gas stations and on the territory of industrial enterprises, as well as in museums, art galleries and archives, due to the fact that a carbon dioxide fire extinguisher does not leave behind a powder (as is the case with a powder fire extinguisher) .

Designed for use:

on passenger vehicles - 1 pc, on freight, passenger vehicles - 2 pcs,
to extinguish fires in rooms of categories B, public premises, fires of class E (electrical equipment) up to 10,000 V, at the rate of 1 fire extinguisher per 100 m 2 ;
for extinguishing electrical installations with voltage up to 10,000 V;
to extinguish computer technology;
extinguishing liquid and gaseous combustible substances of small volumes

Specifications:

body capacity - 4.02 l;
the mass of the CO 2 charge is 3 kg;
fire extinguishing capacity - 34V
temperature mode of operation - from -40 to +50 °С;
OTV jet length - 3 m;
working pressure - 5.8 MPa;
the duration of the supply of OTV - 8 seconds;
fire extinguisher weight (gross) - no more than 10.5 kg;
service life - 10 years.

Maintenance:

During the operation of the fire extinguisher, it is necessary to carry out its timely maintenance at specialized stations, in the amount of:

re-examination (checking parameters) - annually;
recharge - 1 time in five years, after use, when pressure drops;
fire extinguishers installed on vehicles must be recharged at least once every 24 months;
fire extinguishers mounted on vehicles outside the cab or interior and exposed to adverse climatic and physical factors, must be recharged at least once every 12 months.

Accommodation:

On vehicles, fire extinguishers must be located in the cab, in close proximity to the driver or in a place easily accessible to him. Do not store fire extinguishers inplaces, access to which is difficult (trunk, body, etc.).

In buildings, a fire extinguisher is located near the places of the most likely occurrence of a fire, along evacuation routes, and also near the exit from the premises. in such a way that it is protected from direct sunlight, heat fluxes, mechanical influences and other adverse factors. Need to ensuregood visibility and easy access in case of fire.

Typically, a fire extinguisher is hung on a bracket, while the top of the fire extinguisher should be located at a height of no more than 1.5 m from the floor. It is also possible to installin a fire cabinet or on a special stand.

Usage:

To use a fire extinguisher, you need to follow these simple steps:

Pull out the pin by the ring, which prevents the fire extinguisher from accidentally working, while the safety seal is broken;
Direct the bell to the place of fire and press the lever.
Attention! When carbon dioxide escapes, a sharp cooling of the fire extinguisher bell occurs.

Extinguishing methods: