Iyini i-NACE MR0175?

I-NACE MR0175, eyaziwa nangokuthi "Izidingo Ezijwayelekile Zezinto Zokumelana Nokuqhekeka Kwe-Sulfide Stress Ezindaweni Zokucwenga Uphethiloli Owonakalisayo," iyindinganiso ethuthukiswe yiNational Association of Corrosion Engineers (NACE) ukubhekana nenkinga yokuqhekeka kwe-sulfide stress embonini kawoyela negesi. Leli zinga linikeza iziqondiso zokukhetha nokufaneleka kwezinto ezisetshenziswa emishinini nasezingxenyeni ezizovezwa ezindaweni eziwohlokayo emisebenzini yokucwenga uphethiloli.

Ukuqhekeka kokucindezeleka kwe-Sulfide (SSC) uhlobo lokuqhekeka okubangelwa yi-hydrogen okwenzeka ensimbi nakwezinye izinhlobo ze-alloy lapho zivezwa ku-hydrogen sulfide (H2S) kanye nokucindezeleka. Lolu hlobo lokuqhekeka lungaholela ekwehlulekeni okukhulu kwemishini futhi lube nezingozi ezinkulu zokuphepha kanye nezemvelo emisebenzini yokucwenga uphethiloli. I-NACE MR0175 yathuthukiswa ukunciphisa ingozi ye-SSC ngokuhlinzeka ngezidingo zokukhetha kanye nokufaneleka kwezinto ezingamelana nokuqhekeka kokucindezeleka kwe-sulfide.

Indinganiso ihlanganisa izinto eziningi ezahlukene, okuhlanganisa izinsimbi zekhabhoni nezine-alloy ephansi, izinsimbi ezingagqwali, izinsimbi ze-nickel, nezinye izinsimbi ezingagqwali. Inikeza iziqondiso zokukhetha izinto, ukwelashwa kokushisa, imikhawulo yobulukhuni, kanye nezidingo zokuhlola ukuqinisekisa ukuthi izinto ezisetshenziswa emisebenzini yokucwenga uphethiloli ziyamelana nokuqhekeka kokucindezeleka kwe-sulfide.

Esinye sezici ezibalulekile ze-NACE MR0175 ukufaneleka kwezinto ngokuhlola kanye nemibhalo. Indinganiso ichaza izidingo ezithile zokuhlola, njengokuhlolwa kobulukhuni, ukuhlolwa kokudonsa, kanye nokuhlolwa kokuqhekeka kokucindezeleka kwe-sulfide, ukukhombisa ukumelana kwezinto nezinto eziqhekeka kokucindezeleka kwe-sulfide. Ngaphezu kwalokho, indinganiso idinga abakhiqizi ukuthi banikeze imibhalo, njengemibiko yokuhlolwa kwezinto kanye nezitifiketi zokuhambisana, ukuqinisekisa ukuthi izinto ziyahlangabezana nezidingo ze-NACE MR0175.

I-NACE MR0175 iphinde inikeze iziqondiso zokuklama nokwenziwa kwemishini nezingxenye ukuze kuncishiswe ingozi yokuqhekeka kokucindezeleka kwe-sulfide. Lokhu kufaka phakathi izincomo zezinqubo zokushisela, ukwelashwa kwendawo, kanye nezinye izinyathelo zokuvimbela ukuqhekeka okubangelwa yi-hydrogen ensimini.

Ukuhambisana ne-NACE MR0175 kubalulekile ekuqinisekiseni ubuqotho nokuthembeka kwemishini nezingxenye ekusebenzeni kokucwenga uphethiloli. Ngokukhetha nokufanelekela izinto ngokuhambisana nezindinganiso, abaqhubi banganciphisa ingozi yokuqhekeka kokucindezeleka kwe-sulfide futhi baqinisekise ukuphepha nokusebenza kahle kwezikhungo zabo.

Ekuphetheni, i-NACE MR0175 iyindinganiso ebalulekile embonini kawoyela negesi, enikeza iziqondiso zokukhetha nokufaneleka kwezinto ezingamelana nokuqhekeka kokucindezeleka kwe-sulfide ezindaweni zokucwenga uphethiloli ezingcolisayo. Ngokulandela izidingo zaleli zinga, abaqhubi banganciphisa ingozi yokuqhekeka kokucindezeleka kwe-sulfide futhi baqinisekise ubuqotho nokuthembeka kwemishini yabo kanye nezingxenye. Ukuhambisana ne-NACE MR0175 kubalulekile ekugcineni ukuphepha nokusebenza kahle kwemisebenzi yokucwenga uphethiloli.

I-Hikelok ingahlinzeka ngemikhiqizo eyahlukahlukene ehambisana nezindinganiso ze-NACE MR0175, njengeUkufakwa Kweshubhu, Ukufakwa Kwepayipi, Amavalvu Ebhola, Amavalvu Enaliti, Ama-valve Okuhlola, Amavalvu Okusiza, Amasilinda Esampula.