Zomwe Ndi Zokwera mtengo, Intrinsically Safe kapena Flameproof

Mfundo yofunika kwambiri pakupanga mapangidwe otetezeka kwenikweni yagona pakupewa kutulutsa cheche. Motsutsana, Mayankho osayaka moto amayang'ana kwambiri kukhala ndi zowala mkati mwa malo omwe afotokozedwa.

Nthawi zambiri, Zida zotetezedwa mwachibadwa zimakhala zokwera mtengo.