1. Inobunzima obuqinile. Izintambo ze- -} Izintambo ezivimbela ukumelana zivame ukuqapha izinto ezifakwayo ezibambisayo njenge-magnesium oxide, ezinendawo ephezulu yokuncibilika nokumelana nomlilo okuhle kakhulu. Kodwa-ke, ukubuyela emuva kwezinto ezimbiwa phansi ezimbiwa ngamaminerali ukuhlanganiswa kwazo okuqinile, okubenza bathambekele ekutholeni umswakama ovela emoyeni. Lapho ungqimba lwentambo yentambo ye-cable uthatha inani elikhulu lomswakama, ukusebenza kwalo kokufakelwa kuzothinteka, okunganciphisa ukumelana nomlilo kanye nokusebenza kukagesi kwekhebula
2. Ezinye izingxenye zekhebula azivalwanga zivaliwe. Umswakama noma amanzi azongena ethafeni lokufakwa kwentambo kusuka ekugcineni kwentambo noma ungqimba oluvikela ikhebula, bese ubona isengezo ngasinye sekhebula, ngaleyo ndlela kulimaze lonke uhlelo lwamandla.
