Open AccessTHE EFFECTS OF FIRE EXTINGUISHING VEHICLES FIRE DISTRIBUTION IN INDOORS MANUFACTURING AND WAREHOUSE FACILITIES
Author(s) -
Ye.M. Hulida,
V. Sharуу
Publication year - 2020
Publication title -
požežna bezpeka
Language(s) - English
Resource type - Journals
eISSN - 2708-1087
pISSN - 2078-6662
DOI - 10.32447/20786662.35.2019.04
Subject(s) - combustion , environmental science , firefighting , warehouse , production (economics) , volume (thermodynamics) , fire protection , waste management , engineering , civil engineering , business , geography , chemistry , physics , organic chemistry , marketing , quantum mechanics , economics , macroeconomics , cartography
Most modern production and storage facilities are fire hazardous. A large area, a large fire load, the use of technologies with high temperatures, contributes to the rapid development of fire in a short period of time over a large area. The current direction of providing the fire safety system at the enterprises is to eliminate the conditions of rapid development of the fire and minimize its consequences through the use of fire curtains.
Develop a method for determining the optimum dimensions of the enclosed volume of a closed warehouse facility by using fire-proof curtains to limit the rate of fire spread.
To provide fire protection for warehouse facilities, the following tasks must be addressed first and foremost
to investigate the process of fire spread in enclosed premises at production and storage facilities;
to develop a method of determining the optimal size of the volume of premises, closed production facilities and to investigate the impact of the use of fire curtains on the speed of fire.
In order to solve the first problem, materials were stored in the production and storage facilities, the combustion of which was accompanied by a thermal decomposition with the release of gaseous combustion products. The rate of burning of solid materials depends not only on the physical nature of the material, but also on the location of the fire load structure. In addition, the rate of burnout indoors differs from the rate of burnout in open space.
Two modes of development of combustion of materials in a room are possible: 1) with the presence of sufficient amount of air (oxygen), that is, the resulting fire is regulated by the fire load; 2) with insufficient air (oxygen), that is, the resulting fire is regulated by ventilation.
Indoors in real conditions, the first mode of fire gradually goes into the second, and after reaching the temperature in the room at which the windows are destroyed, the gas exchange process becomes two-sided and the fire goes to the first mode.
To solve the second problem, a method of determining the optimal size of the volume of premises, closed production and storage facilities was developed.
Conclusions and specific suggestions:
The number of sheltered volumes of storage facilities and their optimal area depends on the storage area of the equipment and equipment not protected from free spread of fire.
The accuracy of determining the optimal area of fire depends on the accepted probability of hit points to be within the range of acceptable solutions of the optimization problem.
The presence of a protected volume of storage facilities reduces the rate of fire spread by 1.8 times.
In the protected volume of the room with fire curtains on the roof of the warehouse it is necessary to arrange 3-piece air-exhaust lights to remove smoke in case of fire.