Ipayipi likathayela elinezindonga ezikabili: iwuhlobo olusha lwepayipi elinodonga lwangaphandle lwe-annular nodonga lwangaphakathi olubushelelezi.Isetshenziselwa kakhulu ukulethwa kwamanzi amakhulu, ukuhlinzekwa kwamanzi, ukuthuthwa kwendle, ukuthuthwa kwendle, i-exhaust, umoya wesitimela ohamba ngaphansi komhlaba, umoya wezimayini, ukuchelela emapulazini nokunye ngengcindezi yokusebenza engaphansi kuka-0.6MPa.Umbala wangaphakathi wodonga lwezinsimbi eziphindwe kabili ngokuvamile uba luhlaza okwesibhakabhaka nomnyama, kanti ezinye izinhlobo zizosebenzisa ophuzi.