Ipayipi Lensimbi Elingenamthungo le-ASTM A335 P91: Izicelo, Ukwelashwa Kokushisa kanye Nomhlahlandlela Wokuthenga

Ngezinhlelo zokuphehla ugesi ezisebenzisa izinga lokushisa eliphezulu kanye nengcindezi ephezulu, ukukhetha izinto akupheleli nje ekukhetheni ipayipi lensimbi elinamandla aphezulu.Ipayipi lensimbi elingenamthungo le-ASTM A335 P91icaciswe kabanzi ngensizakalo yokushisa okuphezulu edingekayo ngoba ukwakheka kwayo kwe-alloy kanye nesimo sokwelashwa kokushisa kuhlobene eduze nokusebenza kahle kwemishini isikhathi eside.

Nokho, kubathengi, inselele yangempela ivame ukungamtholi umhlinzeki wamapayipi e-P91. Kuwukuqinisekisa ukuthiizinga, ukwelashwa kokushisa, ukuhlolwa, imibhalo kanye nokulandelekakonke kufana nencazelo yephrojekthi.

KunganiI-ASTM A335 P91 Kusetshenziswa Ezinhlelweni Zamandla Ezingashisi Kakhulu?

I-ASTM A335 P91iyizinga lepayipi le-ferritic alloy-steel elihlanganisiwe elenzelwe isevisi yokushisa okuphezulu. I-ASTM ikhomba i-A335 njengencazelo ehlanganisa ipayipi le-ferritic alloy-steel elihlanganisiwe elihlanganisiwe lokusetshenziswa kokushisa okuphezulu, enezidingo ezihlanganisa ukwakheka kwamakhemikhali, izakhiwo zemishini, ubulukhuni kanye nokuhlolwa.

I-P91 iqukethe cishe i-chromium engu-8–9.5% kanye ne-molybdenum engu-0.85–1.05%, kanye nokwengezwa okulawulwayo okuhlanganisa i-vanadium, i-niobium kanye ne-nitrogen. Lo mklamo we-alloy usekela amandla kanye nokumelana nokukhukhuleka okudingekayo ezimweni zesevisi ezidingayo.

Izinhlelo zokusebenza ezijwayelekile zeIpayipi lensimbi ye-alloy ye-P91faka:

· Izinhlelo zokushisa umusi eziyinhloko zesiteshi sikagesi kanye nokushisa kabusha
· Amapayipi ebhoyila kanye ne-superheater
· Amapayipi omusi ashisa kakhulu
· Izitshalo zamandla ezisebenzisa uphethiloli kanye nomjikelezo ohlanganisiwe
· Amapayipi okucindezela okushisa okuphezulu kanye nemishini ehlobene nawo

Izinga elifanele kufanele likhethwe njalo ngokuya ngezinga lokushisa lomklamo, ingcindezi, izimo zesevisi kanye nekhodi yobunjiniyela esebenzayo kunokuba kukhethwe ngegama lebanga lodwa.

I-P91 vs P22Kungani Abathengi Bengenakubaphatha Njengezinto Ezilula Zokufaka Esikhundleni?

I-P91 vs P22umbuzo ovamile ekuthengweni kweziteshi zikagesi.

I-P22 iyinsimbi ye-Cr-Mo ene-alloy ephansi, kuyilapho i-P91 inokuqukethwe okuphezulu kakhulu kwe-chromium kanye nomklamo we-alloy oyinkimbinkimbi kakhulu. Ngakho-ke la mabanga amabili anezici zezinto ezibonakalayo ezahlukene kanye nezinhlelo zokusebenza zephrojekthi.

Ngokuphathelene nokuthengwa kwempahla, iphuzu elibalulekile yileli:

I-P91 akufanele ithathelwe indawo yi-P22—noma i-P22 yi-P91—ngoba nje ubukhulu bayo buyafana.

Ukuqhathanisa okulungile kufanele kufake:

· Izinga lokushisa lomklamo kanye nengcindezi
· Izidingo zamandla esikhathi eside kanye nokugeleza
· Ukwakheka kwamakhemikhali
· Isimo sokwelashwa ngokushisa
· Izakhiwo zemishini
· Izidingo zenqubo yokushisela
· Izidingo ze-PWHT
· Izidingo ze-NDE kanye nokuhlolwa
· Amakhodi okuklama nokwakha asebenzayo

Lokhu kubaluleke kakhulu lapho uthenga izinto zokufaka esikhundleni sesistimu yesitshalo sikagesi esikhona.

I-P91 vs T91: Buyini Ubudlelwano?

Okunye ukusesha okuvamile yilokhuI-P91 vs T91.

Lezi zigaba ezimbili zihlobene kakhulu ne-alloy chemistry, kodwa zingezakho izincazelo ezahlukene zomkhiqizo we-ASTM.

I-ASTM A335 P91kuchazwe ngepayipi lensimbi ye-ferritic alloy engenamthungo, kuyilaphoI-ASTM A213 T91imbozwe ngaphansi kwencazelo yebhoyila yensimbi engenamthungo ye-ferritic ne-austenitic alloy, i-superheater kanye namashubhu okushintshanisa ukushisa.

Ngakho-ke, i-P91 ne-T91 akufanele ziphathwe njengemikhiqizo engashintshaniswayo ngoba nje amagama azo amakhemikhali afana.

Uhlobo lomkhiqizo, ubukhulu, izidingo zokukhiqiza, ukusetshenziswa kanye nencazelo yephrojekthi kumele kuhlolwe ngaphambi kokushintsha.

Kungani Ukwelashwa Kokushisa Kubalulekile Ku-P91

NgobaIpayipi lensimbi elingenamthungo le-P91, ukwelashwa kokushisa akuyona imininingwane yesibili yokukhiqiza. Kuyingxenye ebalulekile yokufeza izakhiwo zezinto ezidingekayo.

Ngakho-ke incazelo yokuthenga ye-P91 kufanele ichaze ngokucacile okudingekayo:

· Isimo sokwelashwa ngokushisa
· Amarekhodi okwelashwa kokushisa
· Imiphumela yokuhlolwa kwemishini
· Imiphumela yokuqina
· Ukwakheka kwamakhemikhali
· Ukuhlonza ukushisa/indawo
Uhlelo olujwayelekile olusebenzayo

I-ASTM A335 idinga ukuthi izinto zihambisane nezidingo ezithile zamakhemikhali, ukuthambekela kanye nokuqina, futhi indinganiso ihlanganisa nezidingo zokuhlolwa kwe-hydrostatic kanye nokungabhubhisi.

Ngenxa yalesi sizathu, abathengi kufanele bagweme ukuthenga i-P91 kuphela ngesilinganiso esithi “ASTM A335 P91.” Imininingwane ephelele yobuchwepheshe ibalulekile.

I-NDE kanye nokuhlolwa: Yini okufanele abathengi bayihlole?

OkuthembekileUkuhlolwa kwepayipi le-P91Uhlelo kufanele ludlulele ngale kokuhlola okubonakalayo kanye nokulinganisa ubukhulu.

Kuye ngencazelo yephrojekthi kanye nezidingo ezengeziwe ezisebenzayo, abathengi kungadingeka baqinisekise:

· Ukuhlaziywa kwamakhemikhali
· Ukuhlolwa kokuqina
· Ukuhlolwa kokuqina
· Ukuhlolwa kobukhulu
· Ukuhlolwa kwe-Hydrostatic
· Izidingo ze-NDE
· Amarekhodi okwelashwa kokushisa
· Isimo somphezulu
· Ukuhlonza nokumaka izinto
· Ukuhlolwa komuntu wesithathu, uma kudingeka

I-ASTM A335 icacisa ukuhlolwa kwe-hydrostatic kanye nemibandela yokuhlola engonakalisi ipayipi elinikezwe ngokwezindinganiso. Izidingo ezengeziwe zokuhlola zingase zichazwe ku-oda lokuthenga.

Ngakho-ke indlela eqondile ye-NDE kanye nezindlela zokwamukelwa kufanele kuqinisekiswe ngokumelene nohlelo olufanele lwezinga kanye nencazelo yephrojekthi.

I-MTC kanye Nokulandelela: Imibhalo Ibaluleke Kakhulu Njengepayipi

Kumaphrojekthi ezitshalo zikagesi,I-P91 MTCfuthiukulandeleka kwezinto ezibonakalayokuyizinto ezibalulekile okufanele uzicabangele uma uthenga.

Iphakheji yezinto ezibonakalayo efanele ingadinga ukuxhuma:

Inombolo Yokushisa → Ipayipi → Ukwelashwa Kokushisa → Imiphumela Yokuhlolwa → I-MTC → Amarekhodi Okuhlola

Abathengi kufanele bahlole ukuthi ngabeIsitifiketi Sokuhlola Izinto (i-MTC)ikhomba ngokucacile izinga lezinto ezibonakalayo, inombolo yokushisa, ukwakheka kwamakhemikhali, izakhiwo zemishini, ulwazi lokwelashwa kokushisa kanye nemiphumela yokuhlola edingekayo.

Kumaphrojekthi amakhulu e-EPC, izinkinga zokulandelela zingadala ukubambezeleka ngesikhathi sokuvunywa kwezinto, ukwenziwa noma ukubuyekezwa kokugcina kwemibhalo—ngisho noma ipayipi elingokoqobo ngokwalo libonakala lamukelekile.

Ukushisela kanye ne-PWHT Kumelwe Kuqinisekiswe Ngaphambi Koku-oda

I-P91 ivame ukusetshenziswa ezinhlelweni zamapayipi ashiselwe ngokushisa okuphezulu, ngakho-keUkushisela kwe-P91futhiI-PWHTkufanele kucatshangelwe ngesikhathi sokuthenga kunokuba kucatshangelwe ngemva kokufika kwepayipi.

Inqubo yokushisela, ukushisisa kusengaphambili, ukulawulwa kokuxhumana, ukwelashwa kokushisa ngemva kokushisisa kanye nezidingo zokuhlola ezihlobene kufanele zisungulwe ngokuya ngezincazelo zephrojekthi ezifanele, izimfanelo zenqubo yokushisela kanye namakhodi okulawula.

Ngakho-ke, umthengi kufanele anikeze umhlinzeki izidingo zephrojekthi ezifanele ngaphambi kokukhiqiza noma nini lapho kungenzeka.

Lokhu kusiza ukuqinisekisa ukuthi izinto ezinikeziwe kanye namadokhumenti kungasekela inqubo yokukhiqiza nokufaka engezansi.

Kungani Ukuthengwa kwe-P91 Kungafanele Kusekelwe Entengoni Kuphela

Isilinganiso esiphansi kakhulu akuyona ngempela izindleko zephrojekthi eziphansi kakhulu.

NgobaIpayipi lensimbi ye-alloy ye-P91, izingozi zokuthengwa kwempahla zingafaka:

· Ibanga noma imininingwane engalungile
· Imibhalo engaphelele yokwelashwa kokushisa
· Ukungalandeleki okungekho
· I-MTC engahambisani nezindinganiso
· Amarekhodi e-NDE anganele
· Ukuhlolwa komuntu wesithathu okubambezelekile
· Ubunzima ngesikhathi sokuvunywa kwezinto zamakhasimende
· Izinkinga zemibhalo ngesikhathi sokudluliselwa kwephrojekthi

Kumaphrojekthi kagesi nezimboni anenani eliphezulu, lezi zinkinga zingadala izindleko ezinkulu kakhulu kunomehluko wokuqala entengo yamapayipi.

Indlela engcono yokuthenga ukuhlolaukuhambisana nezinto ezibonakalayo + ukuhlolwa + imibhalo + ukulandelelwa + ikhono lokulethwandawonye.

Indlela i-SANONPIPE Esekela Ngayo Amaphrojekthi e-P91

Kwabathengi abathengaIpayipi lensimbi elingenamthungo le-ASTM A335 P91, I-SANONPIPE igxile ekunciphiseni izingozi zobuchwepheshe kanye nezokulethwa ngaphambi kokuthunyelwa.

Kuye ngezidingo zephrojekthi, ukwesekwa kwethu kungafaka:

· Ukuthola amapayipi angenamthungo e-ASTM A335 P91
· Ukuqinisekiswa kwebanga kanye nemininingwane
· Ukulinganisa ubukhulu nobukhulu bodonga
· Ukubuyekezwa kwe-MTC kanye nokulandelelwa
· Imibhalo yokwelashwa kokushisa
· Ukuhlanganiswa kokuhlolwa
· Izidingo ze-NDE kanye nokuhlolwa
· Ukuhlanganiswa kokuhlolwa komuntu wesithathu
· Ukupakisha nokumaka ngokwezidingo zephrojekthi
· Ukutholakala kwesitoko kanye nezinketho ezintsha zokukhiqiza
· Thumela imibhalo kanye nokusekelwa kokulethwa komhlaba wonke

Inhloso akukhona nje ukuhlinzeka ngepayipi le-P91, kodwa ukusiza abathengi ukuthola izinto ezihambisana kahle nephrojekthi futhi ezisekelwa yimibhalo edingekayo.

Uhlu Lokuhlola Lokuthengwa Kwe-P91

Ngaphambi kokufaka i-oda le-Ipayipi le-ASTM A335 P91, abathengi kufanele baqinisekise:

1. Uhlelo lwe-ASTM A335/A335M

2. Ibanga le-P91 kanye nefomu lomkhiqizo

3. Ububanzi bangaphandle kanye nobukhulu bodonga

4. Ubuningi nobude obudingekayo

5. Izidingo zokwelapha ukushisa

6. Izidingo zemishini kanye nobulukhuni

7. Izidingo ze-NDE

8. Izidingo zokuhlolwa kwe-Hydrostatic

9. Izidingo ze-MTC kanye nokulandelelwa

10. Izidingo zokuhlolwa komuntu wesithathu

11. Izidingo zokumaka nokupakisha

12. Isikhathi sokugcina sokulethwa kanye nemibhalo

Ukuthatha Kokugcina

Ipayipi lensimbi elingenamthungo le-ASTM A335 P91iyinto esebenza kahle kakhulu yokufuna amandla okushisa aphezulu kanye nezicelo zamapayipi okucindezela, kodwa ukuthengwa okuphumelelayo kuncike kokuningi kakhulu kunegama lebanga.

Kumaphrojekthi e-P91, abathengi kufanele bahlole uchungechunge oluphelele lokuhlinzeka—kusukelaukukhethwa kwezinto kanye nokwelashwa kokushisa kuya ekuhlolweni, i-MTC, ukulandeleka, izidingo zokushisela kanye nokulethwa.

Kumaphrojekthi lapho ukuthobela imithetho kanye nemibhalo kubalulekile khona, ukusebenza nomhlinzeki okwazi ukuxhumanisa kokubili izidingo zobuchwepheshe kanye nokusebenza kokuhlinzeka kunganciphisa kakhulu ingozi yokuthengwa kwempahla.

I-SANONPIPE isekela ukutholakala kwe-P91 ngokuqinisekiswa kwebanga, ukuhlanganiswa kokuhlolwa, ukulandelelwa kanye nezixazululo zokulethwa kwamaphrojekthi ezimboni okuphehla ugesi kanye nokushisa okuphezulu.