Carbon dioxide is prohibited for fire extinguishing equipment in the hyperbaric chamber.
The principle is that carbon dioxide and viscous aluminum hydroxide solution, the generation of carbon dioxide bubbles, attached to the surface of combustible materials, preventing their contact with the air, to achieve the purpose of extinguishing the fire. And the pressure in the high-pressure warehouse will crack the carbon dioxide bubbles, or simply can not form bubbles, so the carbon dioxide fire extinguishers lose their role.
Dry powder fire extinguishers should be used to extinguish fires in high-pressure oxygen chambers.
Ordinary dry powder fire extinguishing agent is mainly composed of active components, hydrophobic components, inert filler, hydrophobic components are mainly silicone oil and hydrophobic silica, inert filler variety, mainly anti-vibration, caking, improve the performance of the dry powder movement, catalyze the dry powder polymerization of silicone oil as well as to improve the role of the foam extinguishing agent with the **** capacity.
Expanded Information:
Dry powder fire extinguisher p>Principle of dry powder fire extinguishers:
One is to rely on the volatile decomposition of inorganic salts in the dry powder, and the combustion process of the fuel produced by the free radicals or reactive groups of chemical inhibition and negative catalytic effect, so that the chain reaction of combustion is interrupted and extinguish the fire;
The second is to rely on the dry powder powder falls outside the surface of the combustible material, the chemical reaction occurs, and at high temperatures under the action of the formation of a layer of glassy covering layer In addition, there are some dilution of oxygen and cooling effect.