公安部《关于进一步加强哈龙替代品及其替代技术管理的通知》明确指出含氢氟烃的三种灭火剂(HFC-227ea、HFC-23、HFC-236fa)可以作为哈龙替代品。这三种替代产品的环境特征见表1。从表1中看出,这三种替代产品与哈龙灭火剂相比较,对臭氧层的影响程度要小很多,但它们的GWP却是二氧化碳的数千甚至上万倍,所以作为“洁净气体”灭火剂推广使用了一段时间后,它们又被《蒙特利尔议定书》后来的修正案列入彻底淘汰哈龙灭火剂过程中一段时间内可以使用的“过渡性”替代物,而不是“长久之计”。 The Ministry of Public Security’s “Notice on Further Strengthening the Management of Halon Alternatives and Alternative Technologies” clearly states that three types of hydrofluorocarbon-containing fire extinguishing agents (HFC-227ea, HFC-23 and HFC-236fa) can be used as halon substitutes. The environmental characteristics of these three alternatives are shown in Table 1. As can be seen from Table 1, these three alternatives have a much lower impact on the ozone layer than the halon fire extinguishing agents, but their GWPs are thousands or even thousands of times that of carbon dioxide, so as a “clean gas ”Fire extinguishing agents have been in use for some time and they are again included in the subsequent amendments to the Montreal Protocol as“ transitional ”replacements that can be used for some time during the complete phase-out of halon fire extinguishing agents, rather than “Long-term plan.”