The fire suppression characteristics of a selection of clean extinguishing agents were examined employing Underwriters Laboratories Standards UL 2166 (halocarbon agents) and UL 2127 (inert gas agents). Agents tested included HFC-227ea (FM-200~(~R)), HFC-23, HFC-125, NAF-S-III, Inergen (IG-541), and nitrogen. The most challenging fires in terms of the concentration of agent required for the halocarbon agents were the PMMA plastic sheet fires. In contrast, for the inert gas agents the most challenging fire was found to be the wood crib fire; at concentrations capable of readily extinguishing the plastic sheet fires, the inert gas agents were unable to provide sufficient cooling to prevent re-ignition of the wood crib following a 10-min soak period.
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机译：使用Underwriters Laboratories Standards UL 2166（卤代烃剂）和UL 2127（惰性气体剂）检查了一些清洁灭火剂的灭火特性。测试的试剂包括HFC-227ea（FM-200〜（R）），HFC-23，HFC-125，NAF-S-III，Inergen（IG-541）和氮气。就卤代烃试剂所需的试剂浓度而言，最具挑战性的火灾是PMMA塑料薄板火灾。相反，对于惰性气体试剂，最具挑战性的火灾是木婴儿床火灾。在能够轻松扑灭塑料板火的浓度下，惰性气体试剂无法提供足够的冷却，以防止浸泡10分钟后木婴儿床重新点燃。
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