I ka nānā nui ʻana o ka poʻe i ka palekana o ke kaiapuni a me ka hoʻomohala hoʻomau, ua lilo ka hoʻohana ʻana i nā pipelines ma nā ʻoihana like ʻole a me nā kahua i mea maʻamau. Eia nō naʻe, ua hōʻike pinepine ʻia nā pipelines i nā wahi ʻino, e like me ke kiʻekiʻe o ka mahana, ke kaomi kiʻekiʻe, a me nā mea ʻino, e hōʻino nui ana iā lākou, e hopena ana i nā kumukūʻai mālama kiʻekiʻe a, i kekahi mau hihia, nā ulia a i ʻole nā pōʻino kaiapuni. No ka lanakila ʻana i kēia mau pilikia, hiki ke uhi ʻia nā paipu me nā uhi pale e like meNā uhi 3LPEa me nā uhi FBE e hoʻonui i ko lākou kūpaʻa i ka pala a hoʻomaikaʻi i ko lākou lōʻihi.
ʻO ka uhi ʻana 3LPE, ʻo ia hoʻi, ka uhi polyethylene ʻekolu-papa, he ʻōnaehana uhi multi-papa i haku ʻia me kahi papa kumu epoxy i hoʻopaʻa ʻia i ka fusion (FBE), kahi papa hoʻopili a me kahi papa polyethylene topcoat. Loaʻa i ka ʻōnaehana uhi ke kūpaʻa maikaʻi loa i ka corrosion, ka ikaika mechanical a me ke kūpaʻa hopena, e hoʻohana nui ʻia ana i lokonā paipu ʻaila a me ke kinoea, nā paipu wai a me nā ʻoihana ʻē aʻe kahi i hōʻike ʻia ai nā paipu i nā wahi ʻino.
ʻO ka uhi ʻana o FBE, ma ka ʻaoʻao ʻē aʻe, he ʻōnaehana uhi uhi hoʻokahi i hana ʻia me kahi uhi pauka epoxy thermosetting i hoʻopili ʻia i ka ʻili o ka paipu. Loaʻa i ka ʻōnaehana uhi ka hoʻopili maikaʻi loa, ke kūpaʻa kiʻekiʻe i ka abrasion a me ka hopena a me ke kūpaʻa kemika maikaʻi, e kūpono ai no ka pale ʻana i nā paipu ma nā ʻoihana like ʻole e like me ka ʻaila a me ke kinoea, ka wai a me ka halihali.
Hoʻohana nui ʻia ka uhi ʻana o 3LPE a me ka uhi ʻana o FBE i ka ʻenekinia pipeline ma muli o ko lākou mau waiwai pale maikaʻi loa. Eia nō naʻe, ʻokoʻa ka laulā o kā lākou noi ma muli o ke kūlana kikoʻī e pono ai ka pipeline e lawelawe.
I loko o nā paipu aila a me ke kinoea, makemake ʻia ka uhi ʻana o 3LPE no ka mea hiki iā ia ke pale aku i ka hana ʻino o ka aila a me ke kinoea, a me ka hopena a me ka friction o ka lepo a puni. Eia kekahi, hiki i nā uhi 3LPE ke pale aku i ka cathodic disbonding, ʻo ia ka hoʻokaʻawale ʻana o nā uhi mai nā ʻili metala ma muli o nā hopena electrochemical. He mea nui loa kēia no nā paipu i pale ʻia e ka cathodically mai ka corrosion.
In nā paipu wai, ʻo ka uhi ʻana o FBE ke koho mua no ka mea hiki iā ia ke pale pono i ka hoʻokumu ʻia ʻana o ka biofilm a me ka ulu ʻana o ka bacteria, hiki ke hoʻohaumia i ka maikaʻi o ka wai. He kūpono hoʻi ka uhi ʻana o FBE no nā paipu e lawe ana i nā mea abrasive, e like me ke one, ka ʻiliʻili a i ʻole ka lepo, ma muli o kona kūpaʻa maikaʻi loa i ka ʻaʻahu ʻana.
I loko o ka paipu halihali, hiki ke hoʻohana ʻia ka uhi 3LPE a i ʻole ka uhi FBE e like me ke kūlana kikoʻī o ka halihali. Inā pili ka paipu i kahi kaiapuni ʻino, e like me ke kaiapuni kai, makemake ʻia ka uhi 3LPE no ka mea kūʻē ia i ka hana ʻino o ka wai kai a me nā meaola kai. Inā pili ka paipu i nā mea hoʻopōʻino e like me nā minelala a i ʻole nā ores, makemake ʻia ka uhi FBE no ka mea hiki iā ia ke hāʻawi i ka pale ʻana i ka ʻaʻahu ma mua o ka uhi 3LPE.
I ka hōʻuluʻulu ʻana, ʻokoʻa ka laulā o ka hoʻopili ʻana o ka uhi ʻana o 3LPE a me ka uhi ʻana o FBE e like me nā kūlana kikoʻī oʻenekinia paipu. Loaʻa i nā ʻōnaehana uhi ʻelua ko lākou mau pono a me nā hemahema. Pono ke koho ʻana o ka ʻōnaehana uhi e noʻonoʻo pono i nā mea like ʻole e like me ke ʻano o ka waena, ka mahana a me ke kaomi o ka pipeline, a me ke kaiapuni a puni. Me ka hoʻomohala mau ʻana o ka ʻenehana pipeline, ke manaʻoʻiʻo nei mākou e loaʻa nā ʻōnaehana uhi hou aʻe a me ka pono e hoʻokō i nā pono e ulu nei o ka pale ʻana a me ka palekana o ka pipeline.
Loaʻa iā mākou kahi hale hana anti-corrosion hiki ke hana i ka uhi 3PE, ka uhi epoxy etc. Inā he nīnau kāu e ʻoluʻolu e kelepona mai iā mākou.
Ka manawa hoʻouna: Malaki-20-2023