Fire Extinguishing Agent Suffocation And Toxicity Risk, Preventive Measures
1. Among all gas fire extinguishing agents, the safety risk of carbon dioxide is the biggest, mainly the risk of suffocation. When the concentration of carbon dioxide exceeds 10%, it will lead to coma, and the concentration of carbon dioxide fire extinguishing design is at least 34%, so the carbon dioxide is completely submerged. The fire extinguishing system should not be used in places where people often stay, and should not be used in some places. Especially in basements and other places, carbon dioxide is not suitable. Carbon dioxide is heavier than air, which increases the difficulty of ventilation after spraying.
2. Under normal circumstances, the fire-extinguishing design concentrations of heptafluoropropane and IG541 are not higher than the NOAEL concentration. At a reasonable design concentration, heptafluoropropane and IG541 have no toxicity and suffocation risk.