Which risk increases when hydrofluoroolefin (HFO) leaks occur near open flames?

💡 Explanation

When HFO refrigerant contacts an open flame, thermal decomposition results, forming toxic hydrogen fluoride, because the high temperature causes bond breakage via pyrolysis. Therefore, hydrogen fluoride formation is the key risk, rather than ozone depletion (negligible) or polymerization which requires specific catalysts.

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