“1211”是一种具有低毒性、绝缘性好、腐蚀性小.灭火后不留痕迹等优点的高效灭火剂,对确保船舶安全有着重要的作用。所以,国际和国内船舶检验局都有规定:船舶上必须装备一定数量有效的“1211”灭火设备。但由于受海水、海雾等腐蚀、天气热冷变化及船舶的 “1211” is an efficient fire extinguishing agent with low toxicity, good insulation, low corrosiveness and no trace after fire extinguishing, which plays an important role in ensuring the safety of ships. Therefore, both the international and domestic shipping inspection agencies have stipulated that a certain number of effective “1211” fire-fighting equipment must be equipped on the ship. However, due to seawater, sea fog and other corrosion, hot and cold weather changes and the ship’s