NACE MR0175 ke eng?

NACE MR0175, eo hape e tsejoang e le "Litlhokahalo tse Tloaelehileng tsa Material for Resistance to Sulfide Stress Cracking in Corrosive Petroleum Refining Environments," ke tekanyetso e ntlafalitsoeng ke National Association of Corrosion Engineers (NACE) ho rarolla bothata ba ho phatloha ha khatello ea sulfide ka har'a oli le. indasteri ea khase. Tekanyetso ena e fana ka litataiso bakeng sa khetho le boleng ba thepa e sebelisoang lisebelisoa le likarolo tse tla pepesetsoa tikoloho e senyang ts'ebetsong ea ho hloekisa peterole.

Sulfide stress cracking (SSC) ke mofuta oa hydrogen-induced cracking e hlahang ka tšepe le lisebelisoa tse ling ha li pepesehetse hydrogen sulfide (H2S) le khatello ea kelello. Mofuta ona oa ho petsoha o ka lebisa ho hloleheng ho matla ha lisebelisoa 'me oa baka likotsi tse tebileng tsa polokeho le tikoloho ts'ebetsong ea ho hloekisa peterole. NACE MR0175 e ile ea ntlafatsoa ho fokotsa kotsi ea SSC ka ho fana ka litlhoko tsa khetho le qualification ea thepa e hanyetsanang le khatello ea kelello ea sulfide.

Tekanyetso e akaretsa mefuta e mengata ea lisebelisoa, ho kenyeletsoa litšepe tsa k'habone le tse tlase-tlase, litšepe tse se nang mochini, li-alloys tsa nickel le li-alloys tse ling tse hanang ho bola. E fana ka litataiso bakeng sa khetho ea thepa, kalafo ea mocheso, meeli ea boima, le litlhoko tsa tlhahlobo ho netefatsa hore lisebelisoa tse sebelisoang ts'ebetsong ea petroleum li hanana le ho phatloha ha khatello ea sulfide.

E 'ngoe ea lintlha tsa bohlokoa tsa NACE MR0175 ke ho tšoaneleha ha lisebelisoa ka tlhahlobo le litokomane. Tekanyetso e hlalosa litlhoko tse khethehileng tsa tlhahlobo, joalo ka tlhahlobo ea boima ba 'mele, tlhahlobo ea ho tiea, le tlhahlobo ea khatello ea maikutlo ea sulfide, ho bonts'a khanyetso ea lisebelisoa ho qhekella khatello ea sulfide. Ntle le moo, maemo a hloka hore bahlahisi ba fane ka litokomane, joalo ka litlaleho tsa liteko tsa thepa le litifikeiti tsa ho latela melao, ho netefatsa hore thepa e fihlela litlhoko tsa NACE MR0175.

NACE MR0175 e boetse e fana ka tataiso bakeng sa ho qaptjoa le ho etsoa ha lisebelisoa le likaroloana ho fokotsa kotsi ea ho phatloha ha khatello ea sulfide. Sena se kenyelletsa likhothaletso bakeng sa lits'ebetso tsa welding, kalafo ea holim'a metsi, le mehato e meng ea ho thibela ho phatloha ho bakoang ke haedrojene tšimong.

Ho lumellana le NACE MR0175 ho bohlokoa bakeng sa ho netefatsa botšepehi le botšepehi ba lisebelisoa le likarolo tsa ts'ebetso ea ho hloekisa peterole. Ka ho khetha le lisebelisoa tse tšoanelehang ho latela maemo, basebetsi ba ka fokotsa kotsi ea ho phatloha ha khatello ea sulfide le ho netefatsa polokeho le katleho ea lisebelisoa tsa bona.

Qetellong, NACE MR0175 ke tekanyetso ea bohlokoa bakeng sa indasteri ea oli le khase, e fanang ka tataiso bakeng sa khetho le qualification ea thepa e hanyetsanang le khatello ea sulfide e senyang libakeng tsa ho hloekisa peterole. Ka ho latela litlhoko tsa tekanyetso ena, basebetsi ba ka fokotsa kotsi ea ho phatloha ha khatello ea sulfide le ho netefatsa botšepehi le botšepehi ba lisebelisoa le likarolo tsa bona. Ho lumellana le NACE MR0175 ho bohlokoa bakeng sa ho boloka polokeho le katleho ea mesebetsi ea ho hloekisa peterole.

Hikelok e ka fana ka lihlahisoa tse fapaneng tse lumellanang le maemo a NACE MR0175, joalo kaLisebelisoa tsa Tube, Lisebelisoa tsa Pipe, Li-valve tsa Ball, Li-valve tsa nale, Sheba Li-valve, Li-valve tsa Thuso, Mehlala ea li-cylinders.