Ama-concoilers wensimbi angamadivayisi akhethekile aklanyelwe ukuphatha imichilo yensimbi, okuvame ukusetshenziswa njengezinto zokusetshenziswa ezinqubweni ezahlukahlukene zokukhiqiza. Le mishini ibamba elikhulu ekukhipheni amakhoyili ensimbi, okwenza ukuguquka okubushelelezi kusuka kwezinto eziluhlaza kuye kumkhiqizo ophelile. Inqubo yokuvula ibalulekile, njengoba ilungiselela imicu yensimbi ukuze aqhubeke nokusetshenziswa, njengokusika, ukubumba, noma i - weld