Yintoni i-NACE MR0175?

I-NACE MR0175, ekwaziwa ngokuba yi-"Standard Material Requirements for Resistance to Sulfide Stress Cracking in Corrosive Petroleum Refining Environments," ngumgangatho ophuhliswe yiNational Association of Corrosion Engineers (NACE) ukujongana nomba wokuqhekeka koxinzelelo lwe-sulfide kwishishini leoyile negesi. Lo mgangatho ubonelela ngezikhokelo zokukhethwa kunye nokufaneleka kwezinto ezisetyenziswa kwizixhobo kunye nezinto eziya kuvezwa kwiindawo ezirhabaxa kwimisebenzi yokucocwa kwepetroleum.

Ukuqhekeka koxinzelelo lwe-sulfide (SSC) luhlobo lokuqhekeka okubangelwa yi-hydrogen okwenzeka kwintsimbi nakwezinye ii-alloys xa zivezwe kwi-hydrogen sulfide (H2S) kunye noxinzelelo. Olu hlobo lokuqhekeka lungakhokelela ekungasebenzi kakuhle kwezixhobo kwaye lubeke umngcipheko omkhulu wokhuseleko kunye nokusingqongileyo kwimisebenzi yokucocwa kwepetroleum. I-NACE MR0175 yenzelwe ukunciphisa umngcipheko we-SSC ngokubonelela ngeemfuno zokukhetha kunye nokufaneleka kwezixhobo ezichasene nokuqhekeka koxinzelelo lwe-sulfide.

Lo mgangatho ugubungela uluhlu olubanzi lwezixhobo, kuquka iintsimbi zekhabhoni kunye neentsimbi eziphantsi kwe-alloy, iintsimbi ezingenanto, ii-alloy ze-nickel, kunye nezinye ii-alloy ezimelana nokugqwala. Ubonelela ngezikhokelo zokukhetha izinto, unyango lobushushu, imida yobunzima, kunye neemfuno zovavanyo ukuqinisekisa ukuba izixhobo ezisetyenziswa kwimisebenzi yokucocwa kwepetroliyam ziyamelana nokuqhekeka koxinzelelo lwe-sulfide.

Enye yezinto ezibalulekileyo ze-NACE MR0175 kukufaneleka kwezinto ngovavanyo kunye namaxwebhu. Umgangatho uchaza iimfuno ezithile zovavanyo, ezinje ngovavanyo lobunzima, uvavanyo lokuxinana, kunye novavanyo lokuqhekeka koxinzelelo lwe-sulfide, ukubonisa ukumelana kwezinto nokuqhekeka koxinzelelo lwe-sulfide. Ukongeza, umgangatho ufuna abavelisi ukuba banike amaxwebhu, anje ngeengxelo zovavanyo lwezinto kunye nezatifikethi zokuthobela imithetho, ukuqinisekisa ukuba izixhobo ziyahlangabezana neemfuno ze-NACE MR0175.

I-NACE MR0175 ikwabonelela ngezikhokelo zoyilo kunye nokwenziwa kwezixhobo kunye nezinto ezisetyenziswayo ukunciphisa umngcipheko wokuqhekeka koxinzelelo lwe-sulfide. Oku kuquka iingcebiso zeenkqubo zokuwelda, unyango lomphezulu, kunye nezinye iindlela zokuthintela ukuqhekeka okubangelwa yi-hydrogen ebaleni.

Ukuthobela i-NACE MR0175 kubalulekile ukuqinisekisa ukuthembeka nokuthembeka kwezixhobo kunye neenxalenye kwimisebenzi yokucocwa kwepetroleum. Ngokukhetha nokufaneleka kwezixhobo ngokuhambelana nomgangatho, abaqhubi banokunciphisa umngcipheko wokuqhekeka koxinzelelo lwe-sulfide kwaye baqinisekise ukhuseleko kunye nokusebenza kakuhle kwezixhobo zabo.

Ukuqukumbela, i-NACE MR0175 ngumgangatho obalulekileyo kushishino lweoyile negesi, inika izikhokelo zokukhetha nokufaneleka kwezinto ezimelana nokuqhekeka koxinzelelo lwe-sulfide kwiindawo zokucocwa kwepetroleum erhabaxa. Ngokulandela iimfuno zalo mgangatho, abaqhubi banokunciphisa umngcipheko wokuqhekeka koxinzelelo lwe-sulfide kwaye baqinisekise ukuthembeka nokuthembeka kwezixhobo zabo kunye nezinto ezisetyenziswayo. Ukuthobela i-NACE MR0175 kubalulekile ekugcineni ukhuseleko kunye nokusebenza kakuhle kwemisebenzi yokucocwa kwepetroleum.

I-Hikelok inokubonelela ngeemveliso ezahlukeneyo ezihambelana nomgangatho we-NACE MR0175, ezinjeIzixhobo zeTube, Izixhobo zombhobho, Iivalvu zeBhola, Iivalvu Zenaliti, Jonga iiValvu, Iivalvu zokunceda, IiSilinda zeSampuli.