In pool fire suppression tests it was observed that the fire extinguishment by flame cooling took a very short time, while extinguishment by surface cooling took a longer time. 在油池火滅火實(shí)驗中發(fā)現通過(guò)火焰冷卻滅火時(shí)所需時(shí)間較短，而依靠燃料表面冷卻滅火時(shí)則時(shí)間較長(cháng)。
If it is necessary to extinguish the flame in order to get to a place where the flow of hydrogen can be shut off, a dry powder extinguisher is recommended. 如果為了進(jìn)入可以切斷氫氣流的地方而有必要滅火的話(huà)，推薦使用干粉滅火器。
