Njengokuba ishishini lokuhambisa iinqanawa liqhubeka nokwanda, ukubaluleka kokugcinwa kwesiqu senqanawa okusebenzayo akunakugqitywa. Isiqu senqanawa sidlala indima ebalulekileyo ekusebenzeni kwayo ngokubanzi, iimpembelelo ezifana nokusebenza kwepetroli, isantya, nefuthe lokusingqongileyo. Iindlela zesiko zokulondolozwa kwesiqu senqanawa zihlala zibandakanya ixesha elibalulekileyo kunye nomsebenzi wesandla, onokuba zibiza kakhulu nexesha-c
