Iyini i-NACE MR0175?

I-NACE MR0175, eyaziwa nangokuthi "Izidingo Ezijwayelekile Zezinto Zokumelana Nokucindezeleka Kwe-Sulfide Cracking in Corrosive Petroleum Refining Environments," iyindinganiso eyakhiwe yi-National Association of Corrosion Engineers (NACE) ukubhekana nenkinga yokuqhekeka kwe-sulfide stress emafutheni kanye imboni yegesi. Leli zinga lihlinzeka ngemihlahlandlela yokukhethwa nokufaneleka kwezinto ezisetshenziswa emishinini nasezintweni ezizochayeka endaweni eyonakalisayo emisebenzini yokuhluza i-petroleum.

I-Sulfide stress cracking (SSC) iwuhlobo lokuqhekeka kwe-hydrogen okwenzeka ensimbi nakwamanye ama-alloys lapho evezwe ku-hydrogen sulfide (H2S) kanye nengcindezi. Lolu hlobo lokuqhekeka lungaholela ekuhlulekeni okuyinhlekelele kwemishini futhi lube sengozini enkulu yokuphepha kanye nemvelo emisebenzini yokuhluza uphethiloli. I-NACE MR0175 yathuthukiswa ukuze kuncishiswe ubungozi be-SSC ngokuhlinzeka ngezidingo zokukhethwa nokufaneleka kwezinto zokwakha ezimelana nokuqhekeka kokucindezeleka kwe-sulfide.

Izinga lihlanganisa inhlobonhlobo yezinto ezisetshenziswayo, okuhlanganisa i-carbon ne-low-alloy steels, izinsimbi ezingagqwali, ama-nickel alloys, namanye ama-alloy amelana nokugqwala. Inikeza imihlahlandlela yokukhetha impahla, ukwelashwa kokushisa, imikhawulo yokuqina, kanye nezidingo zokuhlola ukuze kuqinisekiswe ukuthi izinto ezisetshenziswa emisebenzini yokucwenga i-petroleum ziyamelana nokuqhekeka kwe-sulfide stress.

Esinye sezici ezibalulekile ze-NACE MR0175 ukufaneleka kwezinto zokwakha ngokuhlolwa nokubhala imibhalo. Izinga lichaza izidingo ezithile zokuhlola, ezifana nokuhlolwa kokuqina, ukuhlolwa kwe-tensile, nokuhlolwa kokuqhekeka kwe-sulfide, ukukhombisa ukumelana kwezinto zokwakha ekuqhekekeni kwengcindezi ye-sulfide. Ngaphezu kwalokho, izinga lidinga ukuthi abakhiqizi bahlinzeke ngamadokhumenti, njengemibiko yokuhlolwa kwezinto ezibonakalayo nezitifiketi zokuhambisana, ukuze baqinisekise ukuthi okokusebenza kuhlangabezana nezidingo ze-NACE MR0175.

I-NACE MR0175 iphinde inikeze imihlahlandlela yokuklama nokukhiqizwa kwemishini kanye nezingxenye zokunciphisa ubungozi bokuqhekeka kwe-sulfide stress. Lokhu kuhlanganisa izincomo zezinqubo zokushisela, ukwelashwa kwendawo, nezinye izinyathelo zokuvimbela ukuqhekeka okwenziwe nge-hydrogen ensimini.

Ukuhambisana ne-NACE MR0175 kubalulekile ekuqinisekiseni ubuqotho nokuthembeka kwemishini nezingxenye emisebenzini yokuhluza i-petroleum. Ngokukhetha kanye nezinto ezifanelekayo ngokuhambisana nezinga elijwayelekile, opharetha banganciphisa ingozi yokuqhekeka kwe-sulfide stress futhi baqinisekise ukuphepha nokusebenza kahle kwezikhungo zabo.

Sengiphetha, i-NACE MR0175 iyindinganiso ebalulekile embonini kawoyela negesi, ehlinzeka ngemihlahlandlela yokukhethwa nokufaneleka kwezinto zokwakha ezimelana nokuqhekeka kwengcindezi ye-sulfide ezindaweni zokuhluza i-petroleum eyonakalisayo. Ngokulandela izidingo zaleli zinga, opharetha banganciphisa ubungozi bokuqhekeka kwengcindezi ye-sulfide futhi baqinisekise ubuqotho nokuthembeka kwemishini yabo nezingxenye. Ukuhambisana ne-NACE MR0175 kubalulekile ekugcineni ukuphepha nokusebenza kahle kwemisebenzi yokuhluza i-petroleum.

I-Hikelok ingahlinzeka ngemikhiqizo ehlukahlukene ehambisana nezinga le-NACE MR0175, njengeI-Tube Fittings, Ukufakwa Kwepayipi, Ama-Ball Valves, Amavalvu Enaliti, Hlola ama-Valves, Amavalvu Okusiza, Amasilinda Esampula.