At present, one of the most common, convenient and highly effective devices for extinguishing fires is the OU-5 fire extinguisher. The model is intended for extinguishing materials that ignite when exposed to oxygen, some flammable liquid substances, as well as electrical installations operating under high voltage up to 10 thousand volts.
Due to its compact size and ease of use, the OU-5 fire extinguisher is often used in museums, archives, art galleries, and other premises where flammable materials are stored.
Destination
OU-5 fire extinguishers are indispensable for extinguishing papers, flammable gaseous substances, flammable liquids, electronics and electrical equipment. At the same time, the use of devices of this type turns out to be ineffective when it is necessary to suppress flames when solid materials ignite, as well as substances capable of sustaining combustion in the absence of access to oxygen.
Fire extinguisher OU-5: characteristics
The model belongs to the category of high pressure fire extinguishers. The device is charged with a liquid mixture based on carbon dioxide, which is released due to saturated vapor pressure.
Suppression of fires with a fire extinguisher is based on the cooling of objects and substances that are in the combustion zone. At the same time, the environment is diluted with inert, non-combustible substances of high concentration, which create conditions for the cessation of the combustion reaction.
Fire extinguishers OU-5 specifications are as follows:
- weight - 15 kg;
- ejection time of inert non-flammable substances - 8 seconds;
- jet length - 3 meters;
- operating temperature - ranging from 5 to 50oС;
- fire extinguishing agent - carbon dioxide;
- service life - more than 5 years with annual maintenance and charge mass control.
Application Features
The OU-5 fire extinguisher is activated by removing the holding sealed checks. The socket of the device is directed towards the source of ignition. At the same time, contact of exposed skin with the active substance should be avoided, since when it is released, its temperature drops to a dangerous limit from 60 to 70o below zero.
The fire extinguisher is activated by releasing the starting, locking device - the lever, which must be opened to failure. Atusing the same lever, you can interrupt or completely stop the supply of carbon dioxide.
General terms of use
Before using an OU-5 fire extinguisher, it is necessary to determine the type of fire in order to understand how suitable and effective this model will be in the existing conditions.
It is necessary to suppress ignition sources by directing the fire extinguisher bell from the windward side, gradually moving into the depths of the flame. When extinguishing liquid flammable substances, the bell should first be directed to the front edge of the hearth, and not to an open flame, moving towards the center as the fire is suppressed.
Flammable vertical surfaces, as well as flammable liquid pouring from a height, must be extinguished from top to bottom. In this case, if possible, it is better to use several devices of this type at the same time.
Do not bring the OU-5 fire extinguisher (3), which makes it possible to extinguish electronics and burning electrical installations, closer to electrical appliances at a distance closer than that indicated on the model label.
When extinguishing a fire, you need to ensure that the flame does not flare up again, and in no case turn your back to the fire. After using a fire extinguisher, you should send it to recharge.
Model OU-5 is subject to regular, periodic checks for tightness, which should be performed at least once every six months. Weight is also subject to verification - it must comply with the standards specified in the passport data of this fire extinguisher model.
If the weight of the balloon atmeasurement is less than the prescribed indicators according to the technical specifications or the service life of the cylinder has been exceeded, the fire extinguisher must be sent for maintenance. If necessary, it is recharged by a service station specialist.
