Izifundo zobunjineli ezibandakanyekayo kwisiqinisekiso sokuhamba zidlala indima ebalulekileyo ekwenziweni kweemephu iimfuno ezinciphisa okanye zithintele ilahleko yemveliso ngenxa yokuvaleka kwemibhobho okanye inkqubo yokuvala izixhobo.Iityhubhu ezidityanisiweyo ezisuka kwi-Meilong Tube zifakwa kwi-umbilicals kunye neenkqubo zokutofa ngemichiza zidlala indima esebenzayo kugcino lwekhemikhali kunye nokuhanjiswa kwesiqinisekiso sokuhamba kakuhle.
Iimeko ezinje nge-hydrogen sulfide ephezulu [H2S] okanye ukubekelwa isikali esiqatha kunokuchaswa ngokutofwa kweekhemikhali zonyango kunye nezithinteli ngexesha lemveliso.