ʻO kekahi o nā luʻi nui i nā kaʻina hana i luna o ka ʻoihana aila a me ke kinoea, ʻo ia ka pale ʻana i ka pipeline a me nā lako hana e kūʻē i nā waxes, scaling a me nā waihona aspalthane.
Hiki ke pale ʻia nā kūlana e like me ke kiʻekiʻe o ka hydrogen sulfide [H2S] a i ʻole ka waiho ʻana i ka unahi koʻikoʻi e ka hoʻoheheʻe ʻana i nā kemika lapaʻau a me nā mea paʻa i ka wā hana.