Wehewehe:

Hoʻohana ʻia ka paipu kila lawelawe ʻawaʻawa no nā paipu i loko o ke kaiapuni corrosive.

E kumu ia i ka leakage o ka aila a me ke kinoea pipeline, kekahi mau hihia a pahū.He mea hoʻoweliweli nui ka ʻino ʻana o ka paipu i ka palekana pilikino a me ka haumia o ke kaiapuni, no laila he mea nui ka hana ʻana o ka paipu lawelawe ʻawaʻawa.

Hoʻohana nui ʻia ka paipu lawelawe ʻawaʻawa i ka ʻāina H2S.ʻOiai ʻo H2S he mea hoʻopōʻino ʻino i maʻalahi ka hana ʻana i ka ʻino.

Ke piʻi ka ʻāpana o ka H2S i 300 pa, ʻo nā paipu laina i hoʻohana ʻia e loaʻa ka hana anti-acid corrosion.

Pehea e hana ʻia ai ka paipu lawelawe ʻawaʻawa:

API Spec 5L, ke kila pipeline i hoʻohana 'ia no ka paipu lawelawe 'awaʻawa, he maʻemaʻe-pepehi kila.

E hoʻomaopopo ʻia, hiki i ka maʻemaʻe kiʻekiʻe o ke kila ke hōʻoia i ka haʻahaʻa S, P a me nā mea haumia ʻē aʻe.

Pono ka maʻamau no ka mālama ʻana a me ka nānā ʻana i ke ʻano o ka pipeline steel no ka paipu lawelawe ʻawaʻawa no ka mea ua hoʻoholo mua ʻia ka haki ʻana o ka hydrogen i hoʻokumu ʻia e ka hoʻopili ʻana.

Nā waiwai kemika:

ʻO ka maʻiʻo o C, P, S a me carbon equivalent i loko o ka hui kemika o ka paipu lawelawe ʻawaʻawa ʻoi aku ka haʻahaʻa ma mua o nā paipu laina maʻamau, me nā koi koi.

Maikaʻi no ka ʻike S, he mea pōʻino loa ia i nā kaiapuni corrosion, no laila no ka paipu lawelawe ʻawaʻawa e hoʻomalu i ka S maximum 0.002.