Umbhobho weNtsimbi engenamthungo we-ASTM A335 P91: Izicelo, Unyango lobushushu kunye nesikhokelo sokuthenga

Kwiinkqubo zokuvelisa umbane ezisebenzisa ubushushu obuphezulu kunye noxinzelelo oluphezulu, ukukhetha izinto akupheleli nje ekukhetheni umbhobho wentsimbi onamandla aphezulu.Umbhobho wentsimbi engenamthungo we-ASTM A335 P91Ichazwe ngokubanzi kwinkonzo yobushushu obuphezulu obufunekayo kuba uyilo lwayo lwe-alloy kunye nemeko yonyango lobushushu zinxulumene ngokusondeleyo nokusebenza koomatshini ixesha elide.

Nangona kunjalo, kubathengi, ingxaki yokwenyani idla ngokungakwazi ukufumana umthengisi weepayipi ze-P91. Kukuqinisekisa ukubainqanaba, unyango lobushushu, ukuhlolwa, uxwebhu kunye nokulandelekazonke zihambelana nenkcazo yeprojekthi.

KutheniI-ASTM A335 P91 Isetyenziswa kwiiNkqubo zamandla obushushu obuphezulu?

I-ASTM A335 P91yipayipi ye-ferritic alloy-steel enomthungo eyenzelwe inkonzo yobushushu obuphezulu. I-ASTM ichonga i-A335 njengengcaciso egubungela ipayipi ye-ferritic alloy-steel enomthungo kwizicelo zobushushu obuphezulu, kunye neemfuno ezigubungela ukwakheka kweekhemikhali, iimpawu zoomatshini, ubulukhuni kunye novavanyo.

I-P91 iqulethe malunga ne-8–9.5% ye-chromium kunye ne-0.85–1.05% ye-molybdenum, kunye nezongezo ezilawulwayo kuquka i-vanadium, i-niobium kunye ne-nitrogen. Olu yilo lwe-alloy luxhasa amandla kunye nokumelana nokuqhekeka okufunekayo kwiimeko zenkonzo enzima.

Izicelo eziqhelekileyo zeUmbhobho wentsimbi ye-alloy ye-P91ziquka:

· Isikhululo samandla esiphambili somphunga kunye neenkqubo zokufudumeza ezishushu
· Imibhobho yebhoyila kunye ne-superheater
· Iipayipi zomphunga ezinobushushu obuphezulu
· Izityalo zamandla ezisebenzisa amafutha ezinto zakudala kunye nezijikelezi-ndlela ezidibeneyo
· Imibhobho yoxinzelelo oluphezulu kunye nezixhobo ezinxulumene noko

Udidi olufanelekileyo kufuneka lukhethwe rhoqo ngokweqondo lobushushu loyilo, uxinzelelo, iimeko zenkonzo kunye nekhowudi yobunjineli efanelekileyo kunokuba kukhethwe ngegama lodidi kuphela.

I-P91 vs P22Kutheni Abathengi Bengenakubaphatha Njengezinto Ezilula Zokutshintsha Izinto?

I-P91 vs P22ngumbuzo oqhelekileyo ekuthengweni kwezixhobo zombane.

I-P22 yintsimbi ye-Cr-Mo engaphantsi kwe-alloy, ngelixa i-P91 inomxholo ophezulu kakhulu we-chromium kunye noyilo lwe-alloy oluntsonkothileyo. Ngoko ke la manqanaba mabini aneempawu ezahlukeneyo zezinto kunye nokusetyenziswa kweprojekthi.

Ngokuphathelele ukuthenga, ingongoma ephambili yile:

I-P91 akufuneki ithathelwe indawo yi-P22—okanye i-P22 yi-P91—kuba nje ubukhulu bayo buyafana.

Uthelekiso oluchanekileyo lufanele luquke:

· Ubushushu boyilo kunye noxinzelelo
· Iimfuneko zokuqina kunye namandla exesha elide
· Ukwakheka kweekhemikhali
· Imeko yonyango lobushushu
· Iipropati zoomatshini
· Iimfuneko zenkqubo yokuwelda
· Iimfuneko ze-PWHT
· Iimfuno ze-NDE kunye nokuhlolwa
· Iikhowudi zoyilo kunye nolwakhiwo ezisebenzayo

Oku kubaluleke kakhulu xa kuthengwa izinto zokutshintsha inkqubo yesityalo sombane esele ikho.

P91 vs T91: Yintoni Ulwalamano?

Olunye uphendlo oluqhelekileyo luthiI-P91 vs T91.

Ezi zigaba zimbini zihlobene kakhulu kwi-alloy chemistry, kodwa zezo zichazwe kwiinkcukacha zemveliso ze-ASTM ezahlukeneyo.

I-ASTM A335 P91ichazwe kumbhobho we-ferritic alloy-steel ongenayo i-seamless, ngelixaI-ASTM A213 T91igutyungelwe phantsi kweenkcukacha zebhoyila ye-ferritic kunye ne-austenitic alloy-steel boiler, i-superheater kunye neetyhubhu ze-heat-exchanger.

Ngoko ke, i-P91 kunye ne-T91 akufanele ziphathwe njengeemveliso ezitshintshanayo kuba nje iindlela zazo zeekhemikhali ziyafana.

Uhlobo lwemveliso, ubukhulu, iimfuno zokwenziwa kwayo, isicelo sayo kunye neenkcukacha zeprojekthi kufuneka zihlolwe ngaphambi kokuba kutshintshwe.

Kutheni unyango lobushushu lubaluleke kakhulu kwi-P91

NgokubaUmbhobho wentsimbi engenamthungo we-P91Unyango lobushushu aluyonto yesibini efunekayo kwimveliso. Luyinxalenye ebalulekileyo yokufezekisa iimpawu zezinto ezifunekayo.

Inkcazelo yokuthenga ye-P91 kufuneka ichaze ngokucacileyo oko kufunekayo:

· Imeko yonyango lobushushu
· Iirekhodi zonyango lobushushu
· Iziphumo zovavanyo loomatshini
· Iziphumo zokuqina
· Ukwakheka kweekhemikhali
· Ukuchongwa kobushushu/kwesiza
· Uhlelo oluqhelekileyo olusebenzayo

I-ASTM A335 ifuna ukuba izinto zihambelane neemfuno ezithile zeekhemikhali, ukuxinana kunye nobunzima, kwaye umgangatho ukwabandakanya neemfuno zovavanyo lwe-hydrostatic kunye nolungatshabalalisiyo.

Ngenxa yesi sizathu, abathengi kufuneka baphephe ukuthenga i-P91 kuphela kwisicatshulwa esithi “ASTM A335 P91.” Iinkcukacha zobugcisa ezipheleleyo zibalulekile.

I-NDE kunye noHlolo: Yintoni ekufuneka abathengi bayijonge?

EthembekileyoUkuhlolwa kwepayipi ye-P91Inkqubo kufuneka idlulele ngaphaya kokujonga ngokubonakalayo kunye nokulinganisa ubukhulu.

Ngokuxhomekeke kwiinkcukacha zeprojekthi kunye neemfuno ezongezelelweyo ezifanelekileyo, abathengi banokufuna ukuqinisekisa:

· Uhlalutyo lweekhemikhali
· Uvavanyo lokuxinana
· Uvavanyo lokuqina
· Uhlolo lobukhulu
· Uvavanyo lwe-hydrostatic
· Iimfuneko ze-NDE
· Iirekhodi zonyango lobushushu
· Imeko yomphezulu
· Ukuchongwa kunye nokuphawulwa kwezinto
· Ukuhlolwa ngumntu wesithathu, xa kuyimfuneko

I-ASTM A335 icacisa uvavanyo lwe-hydrostatic kunye nemigaqo yovavanyo olungonakalisiyo kumbhobho onikezelwa kumgangatho. Iimfuno ezongezelelweyo zokuhlolwa zingachazwa nakwi-odolo yokuthenga.

Ngoko ke, indlela echanekileyo ye-NDE kunye nemigangatho yokwamkelwa kufuneka iqinisekiswe ngokuchasene nohlelo olufanelekileyo lomgangatho kunye nenkcazo yeprojekthi.

I-MTC kunye nokulandeleka: Amaxwebhu abaluleke kakhulu njengombhobho

Kwiiprojekthi zezityalo zamandla,I-P91 MTCkwayeukulandeleka kwezintozizinto ezibalulekileyo ekufuneka uziqwalasele xa uthenga.

Iphakheji efanelekileyo yezinto ezibonakalayo ingadinga ukudityaniswa:

Inombolo yoBushushu → Umbhobho → Unyango loBushushu → Iziphumo zoVavanyo → I-MTC → Iirekhodi zoHlolo

Abathengi kufuneka bajonge ukuba ngabaIsatifikethi sovavanyo lwezinto (i-MTC)ichonga ngokucacileyo umgangatho wezinto ezisetyenzisiweyo, inani lobushushu, ukwakheka kweekhemikhali, iimpawu zoomatshini, ulwazi lonyango lobushushu kunye neziphumo zovavanyo ezifunekayo.

Kwiiprojekthi ezinkulu ze-EPC, iingxaki zokulandelela zinokubangela ukulibaziseka ngexesha lokuvunywa kwezinto, ukwenziwa okanye uphononongo lokugqibela lwamaxwebhu—nokuba umbhobho wokwenyani ngokwawo ubonakala wamkelekile.

Ukuwelda kunye ne-PWHT kufuneka kuqinisekiswe ngaphambi kokuba ku-odolwe

I-P91 isetyenziswa rhoqo kwiinkqubo zemibhobho ezitshixiweyo ezinobushushu obuphezulu, ngoko keUkuwelda kwe-P91kwayeI-PWHTkufuneka kuqwalaselwe ngexesha lokuthengwa kwempahla kunokuba kuqwalaselwe emva kokuba umbhobho ufikile.

Inkqubo yokuwelda, ukufudumeza kwangaphambili, ulawulo lwe-interpass, unyango lobushushu emva kokuwelda kunye neemfuno zovavanyo ezinxulumene noko kufuneka zimiselwe ngokweenkcukacha zeprojekthi ezifanelekileyo, iziqinisekiso zenkqubo yokuwelda kunye neekhowudi zolawulo.

Ngoko ke, umthengi kufuneka anike umthengisi iimfuno ezifanelekileyo zeprojekthi ngaphambi kokuba avelise nanini na xa kunokwenzeka.

Oku kunceda ukuqinisekisa ukuba izinto ezibonelelweyo kunye namaxwebhu anokuxhasa inkqubo yokwenziwa nokufakelwa kwezixhobo ezisezantsi.

Kutheni ukuthengwa kwe-P91 kungafanele kusekelwe kwixabiso kuphela

Ixabiso eliphantsi kakhulu alisoloko lixabiso eliphantsi leprojekthi.

NgokubaUmbhobho wentsimbi ye-alloy ye-P91, iingozi zokuthenga zingabandakanya:

· Ibanga okanye iinkcukacha ezingachanekanga
· Amaxwebhu angaphelelanga onyango lobushushu
· Ukungalandeleki kakuhle
· I-MTC engahambelaniyo nemithetho
· Iirekhodi ze-NDE ezinganelanga
· Ukuhlolwa komntu wesithathu okulibazisekileyo
· Ubunzima ngexesha lokuvunywa kwezinto zabathengi
· Iingxaki zokubhala amaxwebhu ngexesha lokunikezelwa kweprojekthi

Kwiiprojekthi zamandla nezoshishino ezinexabiso eliphezulu, le micimbi inokubangela iindleko ezinkulu kakhulu kunomahluko wokuqala kwixabiso lepayipi.

Indlela engcono yokuthenga kukuvavanyaukuthotyelwa kwezinto + ukuhlolwa + amaxwebhu + ukulandeleka + amandla okuhambisakunye.

Indlela iSANONPIPE exhasa ngayo iiProjekthi zeP91

Kubathengi abafuna izintoUmbhobho wentsimbi engenamthungo we-ASTM A335 P91, ISANONPIPE igxile ekunciphiseni iingozi zobugcisa kunye nezobonelelo ngaphambi kokuthunyelwa.

Ngokuxhomekeke kwiimfuno zeprojekthi, inkxaso yethu ingabandakanya:

· Ukufunyanwa kwemibhobho engenamthungo ye-ASTM A335 P91
· Ukuqinisekiswa kwebanga kunye neenkcukacha
· Ukulinganisa ubungakanani kunye nobukhulu bodonga
· Uphononongo lwe-MTC kunye nokulandelelwa
· Amaxwebhu onyango lobushushu
· Ulungelelwaniso lokuhlolwa
· Iimfuno ze-NDE kunye novavanyo
· Ulungelelwaniso lokuhlolwa ngumntu wesithathu
· Ukupakisha nokuphawula ngokweemfuno zeprojekthi
· Ukufumaneka kwesitokhwe kunye neendlela ezintsha zokuvelisa
· Ukuthumela amaxwebhu ngaphandle kunye nenkxaso yokuhanjiswa kweenkonzo kwihlabathi liphela

Injongo ayikokubonelela nje ngombhobho we-P91, kodwa kukunceda abathengi bafumane izinto ezihambelana neprojekthi kwaye zixhaswe ngamaxwebhu afunekayo.

Uluhlu lokuhlola ukuthengwa kweP91

Ngaphambi kokufaka iodolo yeUmbhobho we-ASTM A335 P91, abathengi kufuneka baqinisekise:

1. Uhlelo lwe-ASTM A335/A335M

2. Uhlobo lwe-P91 kunye nefomu yemveliso

3. Ububanzi bangaphandle kunye nobukhulu bodonga

4. Ubungakanani kunye nobude obufunekayo

5. Iimfuno zonyango lobushushu

6. Iimfuno zoomatshini kunye nobunzima

7. Iimfuno ze-NDE

8. Iimfuno zovavanyo lwe-hydrostatic

9. Iimfuneko ze-MTC kunye nokulandeleka

10. Iimfuno zohlolo lomntu wesithathu

11. Iimfuneko zokumakisha nokupakisha

12. Ishedyuli yokuhanjiswa kunye nomhla wokugqibela woxwebhu

Ukuthatha kokugqibela

Umbhobho wentsimbi engenamthungo we-ASTM A335 P91sisixhobo esisebenza kakuhle kakhulu ekufuneni amandla obushushu obuphezulu kunye nokusetyenziswa kwemibhobho yoxinzelelo, kodwa ukuthengwa ngempumelelo kuxhomekeke kakhulu kunophawu lwenqanaba.

Kwiiprojekthi ze-P91, abathengi kufuneka bahlole uthotho olupheleleyo lwezinto ezibonelelwayo—ukusukaukukhethwa kwezinto kunye nonyango lobushushu ukuya kuhlolo, i-MTC, ukulandeleka, iimfuno zokuwelda kunye nokuhanjiswa.

Kwiiprojekthi apho ukuthobela imithetho kunye namaxwebhu kubalulekile, ukusebenza nomthengisi onokukwazi ukulungelelanisa zombini iimfuno zobugcisa kunye nokusebenza kobonelelo kunokunciphisa kakhulu umngcipheko wokuthengwa.

I-SANONPIPE ixhasa ukufunyanwa kwe-P91 ngokuqinisekiswa kwamanqanaba, ukulungelelaniswa kokuhlolwa, ukulandelelwa kunye nezisombululo zokuhanjiswa kwemveliso yombane kunye neeprojekthi zoshishino ezishushu kakhulu.