Currently, one of the most common, convenient and highly effective devices for extinguishing fires is the OU-5 fire extinguisher. A model has been designed to extinguish materials whose ignition occurs when oxygen, some flammable liquid substances, and electrical installations operating under high voltage up to 10 thousand volts are accessed.
Due to its compact size and ease of use, the OU-5 fire extinguisher is often used in museums, archives, art galleries, and other rooms where easily combustible materials are stored.
Appointment
OU-5 fire extinguishers are indispensable for extinguishing papers, combustible gaseous substances, flammable liquids, electronics and electrical equipment. At the same time, the use of devices of this type is ineffective if it is necessary to suppress foci of flame during ignition of solid materials, as well as substances that can sustain combustion without 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 the pressure of saturated vapors.
Suppression of fires by a fire extinguisher is based on the cooling of objects and substances that are in the combustion zone. In this case, the environment is diluted with inert, non-combustible substances of high concentration, which create the conditions for the termination of the combustion reaction.
OU-5 fire extinguishers technical specifications have the following:
- weight - 15 kg;
- release time of inert non-combustible substances - 8 seconds;
- jet length - 3 meters;
- operating temperature - in the range from 5 to 50 ° C;
- 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 retained sealed check. The bell of the device is directed towards the source of ignition. In this case, contact of exposed skin with the active substance should be avoided, since when released, its temperature drops to a dangerous limit from 60 to 70 about below zero.
The fire extinguisher is activated by the release of the starting, locking device - the lever, which must be open to failure. Using the same lever, you can interrupt or completely stop the flow of carbon dioxide.
General Terms of Use
Before using the 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 current conditions.
It is necessary to suppress the ignition sites by directing the bell of the fire extinguisher from the windward side, gradually shifting 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, shifting to the center as the fire is suppressed.
Ignited vertical surfaces, as well as a flammable liquid pouring from a height, must be extinguished from top to bottom. Moreover, 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, to electrical appliances at a distance closer than that indicated on the model label.
When extinguishing a fire , make sure that the flame does not flash again, and in no case turn your back on the fire. Using a fire extinguisher, you should send it to recharge.
The OU-5 model is subject to regular, periodic testing for leaks, which should be performed at least once every six months. The weight is also subject to verification - it must comply with the standards specified in the passport data of this model of a fire extinguisher.
If the weight of the cylinder during measurement is less than the specified indicators according to the technical specifications or the service life of the cylinder is exceeded, the fire extinguisher must be sent for maintenance. If necessary, it is recharged by a specialist service station.