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Harmfulness and corrosiveness of thermal decomposition products produced by halocarbon clean agents as the fire size in small space
Author(s) -
Lee Changwoo,
Yoo Juyoul,
Seo Sanghoun
Publication year - 2018
Publication title -
fire and materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.482
H-Index - 58
eISSN - 1099-1018
pISSN - 0308-0501
DOI - 10.1002/fam.2651
Subject(s) - hydrogen fluoride , thermal decomposition , decomposition , halocarbon , waste management , fluoride , environmental chemistry , chemistry , environmental science , organic chemistry , inorganic chemistry , engineering
Summary Among various gaseous fire extinguishing agents, the halocarbon clean agent is known as an environment‐friendly nontoxic fire extinguishing agent having a low environmental influence and harmfulness. However, as researches on the influence of the halogenated compound clean fire extinguishing agent on thermal decomposition products (hydrogen fluoride (HF), carbonyl fluoride (COF 2 )) make progress, the harmfulness and the secondary damages caused by the corrosiveness of HF. In this research, the quantity/tendency of thermal decomposition products produced by halocarbon clean agents (HFC‐125, HFC‐227ea, FK‐5‐1‐12) was measured to analyze their harmfulness to life as well as their corrosiveness. According to the analyzed results, highly corrosive HF increased as the size of the fire increased, and corrosiveness of the metal samples increased as well. However, the concentration level of HF and COF 2 indicated different tendencies depending on the fire extinguishing agent. In particular, for the case of HFC‐125, approximately 1000 ppm of COF 2 indicating a toxicity level higher than that indicated by HF was produced as the fire size, and this proves that this agent is very harmful to life. Accordingly, it is necessary to conduct a number of researches for thermal decomposition products on harmfulness of HF and on COF 2 as well.