Ko hono toʻo flameproof meʻangaue fakaʻuhila ko ha sipinga, “fakamoʻoniʻi ʻo e fakaʻauha” ʻuhinga ki he malava ko ia ke taʻofi ʻa e combustible ʻi tuʻa mixtures mei he igniting pe lahi ʻo tatau ai pe kapau ʻoku ʻi ai ha kiʻi meʻa ʻoku ne fakatupu ha fakaʻauha ʻo e ngaahi naunau fakafepaki ʻi he hiva.
Ko e ola lelei ʻo e “fakamoʻoniʻi ʻo e fakaʻauha” meʻangaue fakaʻuhila ʻi hono fakaʻehiʻehi mei he lolotonga ʻoku makatuʻunga ia ʻi he palani makehe ʻo hono hivaʻi.