A fire is one of the most unpleasant incidents. It not only leads to significant material damage, but also harms human health, and sometimes takes his life.
And the reason for this is often the entrance door, deformed under the influence of high temperature and open fire. Deformation leads to jamming of locks and creates a real captivity for those escaping. This situation can be avoided if a fire door is installed.
A metal structure can be called a fire door only if it is capable of localizing fire in one room for a long time and preventing its penetration into another. In order to obtain this status, the product is subjected to a number of tests. In a special chamber, the sample is installed in an improvised doorway according to all the canons of professional installation. Temperature sensors are attached to the door from the outside, and conditions similar to a real fire are created inside. The main task of specialists is to determine the time after which the product will begin to lose its functional characteristics, as well as the time of complete destruction of the structure.
Not every steel door block can be called a fire door. The main difference between such products is the presence of heat–resistant, non-fire-supporting materials, such as stone wool, as insulation. The decorative finish should also be fire-resistant and non-flammable. It can be a polymer coating or ordinary paint. A special groove is provided along the perimeter of the fire door, into which an anti-smoke insert made of semi-solid fusible material is laid.
During a fire, it foams and spreads over the entire furrow, ensuring hermetically sealed cracks between the door leaf and the frame. Such an insert will protect the adjacent room from smoke and save the lives of people in it.
Conscientious manufacturers of fire doors pay great attention to the development of a special design capable of maintaining its integrity for as long as possible in fire conditions. And even if deformation is inevitable, it must occur in a certain direction. It is believed that the door should not be deformed in any direction, but exclusively inwards or outwards. For rapid evacuation, manufacturers often provide an "Anti-panic" system. In addition, according to fire safety rules, the fire door should open only in the direction of evacuation, that is, outside. Installation of a fire door should be carried out by specialists who have a license for this type of activity.
On doors that have successfully passed laboratory tests, the Certification Center issues a document that reflects the degree of its fire resistance. The buyer can determine this value by marking on the product packaging. So, for example, a product marked EI60 is able to maintain functional properties in fire conditions and prevent the penetration of fire and combustion products for 60 minutes. Gorenje The highest fire resistance index is EI360, the lowest is EI15, almost like an ordinary household door.
The installation of a fire-resistant door is necessary in those rooms where the probability of ignition is very high.
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