Categories of premises for fire safety: how to determine?

All special purpose buildings (warehouses, storehouses, workshops) are divided into certain categories of premises, based on certain characteristics of fire safety.

What do you pay attention to when determining the category of fire safety?

There are certain points that need to be considered when determining the category of premises for fire safety:

1. The area of the building or premises.

2. Availability of fire-hazardous items, their number and location.

3. Materials from which the basic coverings (floor and walls) are made, and also other subjects of an interior.

4. The system of emergency safety (its presence or absence, as well as serviceability).

5. Description and characteristics of all stages of the technological process that takes place in the building.

6. Height of the walls of the room.

Main Categories

So, what are the categories of premises? In total, there are five of them, denoted by the letters of the Russian alphabet from A to D. A is the increased danger of explosion and fire, B is the average danger of fire and explosion, B is the average danger of a fire, D is a moderate fire hazard, and D is a reduced fire hazard. Now, more about this and about which rooms are assigned a particular degree.

Category A. It is assigned to rooms in which x Injured or treated in the process fluid, gases or materials that can ignite and even explode under certain conditions (at an air temperature below 28 degrees).

Category of premises B. This category includes buildings in which special materials are stored or used (dusts, powders, liquids, gases, objects) that can explode or ignite at temperatures above 28 degrees. Such conditions usually take place, for example, in hot shops.

Categories of premises В1, В2, В3 and В4. In assigning this or that degree, certain factors and conditions play an important role. Thus, the area of the building and the features of its layout are taken into account. In addition, the stored materials are studied: their number, as well as species. It is important to characterize and those or other technological processes: their conditions, temperatures, stages. The character, as well as the amount of fire load (fire-hazardous items), their specific properties under the influence of certain environmental conditions are assessed.

Category D (mind Fire hazard) is assigned to buildings in which materials that have high temperatures or produce gases and sparks under certain conditions (for example, in the melting of metals or in welding) are stored or circulated in technological processes.

The category of premises D includes buildings in which the storage and circulation of materials and items having low temperatures and normal fire hazard characteristics occurs. The danger of a fire in such buildings is minimal.

Conclusion

In conclusion, you can write that this or that category of fire danger is assigned only by a fire inspector after a detailed inspection and study of the building.