Txheej txheem cej luam
SY/T 0315-2002yog Suav teb roj av thiab cov nkev kev lag luam tus qauv nrog tag nrho cov npe ua lus Askiv:"Standard for External Fusion Bonded Epoxy Txheej rau Hlau Yeeb Nkab".
Cov qauv no qhia txog cov kev cai rau kev thov, kuaj, thiab tshuaj xyuas fusion-bonded epoxy (FBE) hmoov txheej siv rau kev tiv thaiv corrosion sab nraud ntawm cov kav dej steel.
Nws yog Suav sib npaug ntawm dav lees paub thoob ntiaj teb cov qauv zoo liCAN/CSA-Z245.20(Canadian) thiabANSI/AWWA C213(Asmeskas). Tau ntau xyoo, nws yog tus qauv hauv paus rau FBE txheej hauv Tuam Tshoj cov roj thiab cov kav dej loj loj.
Qhov tseem ceeb Technical Requirements thiab Specifications
Tus txheej txheem npog tag nrho cov txheej txheem los ntawm kev xaiv cov khoom siv mus rau kev tshuaj ntsuam zaum kawg. Nov yog cov ntsiab lus tseem ceeb:
1. Scope
Daim ntawv thov:Sab nraud corrosion tiv thaiv rau faus lossis submerged steel pipelines.
Hom yeeb nkab:Muaj feem xyuam rau seamless steel kav thiab welded steel kav.
Kev Pabcuam Kub:Feem ntau rau cov kav dej uas muaj kev ua haujlwm tsis tu ncua mus txog80 degree. Tshwj xeeb siab - qhov kub thiab txias FBE qib yuav raug teev rau qhov kub siab dua.
2. Kev npaj nto
Qhov no yog ib qho tseem ceeb kauj ruam los xyuas kom meej txheej adhesion. Tus txheej txheem mandates:
Ntxuav:Tshem tawm tag nrho cov roj, roj, av, thiab lwm yam kab mob.
Abrasive Blasting:Cov yeeb nkab saum npoo yuav tsum tau tawg - ntxuav kom ua tiav anyob ze - dawb hlau tawg tiav (Sa 2.5)raws li tau hais tseg hauv cov qauv thoob ntiaj teb.
Anchor Profile:Nws qhia txog qhov yuav tsum tau muaj rau qhov profile nto (roughness), feem ntau ntawm50 thiab 100 micrometers (2 mus rau 4 mils). Qhov no tsim ib tug neeg kho tshuab "tus hniav" rau epoxy tuav mus rau.
Kev tshem tawm plua plav:Tag nrho cov hmoov av abrasive yuav tsum tau muab tshem tawm kom huv si tom qab blasting.
3. Txheej Khoom (FBE Powder)
FBE hmoov yuav tsum tau raws li cov tshuaj thiab lub cev muaj zog, suav nrog:
Lub Sijhawm Kho Mob:Lub sij hawm thiab kub xav tau rau cov hmoov yaj, ntws, thiab hla tag nrho - txuas (kho).
Sieve Analysis:Particle loj faib los xyuas kom meej daim ntawv thov.
Kev cia khoom:Yuav tsum tau khaws cov hmoov los tiv thaiv kom txhob ya raws thiab clumping.
4. Daim ntawv thov txheej
Ua ntej- cua sov:Cov yeeb nkab steel yuav tsum tau ua kom sov rau qhov ntsuas kub (feem ntau ntawm 230℃- 250 degree) kom cov hmoov fuse thiab kho thaum sib cuag.
Txoj kev thov:FBE hmoov yog electrostatically sprayed mus rau rhuab, rotating yeeb nkab.
Kho:Cov yeeb nkab khaws cov cua sov kom txaus kom cov txheej txheem kho kom zoo thaum nws txias.
5. Txheej txheej thiab tshuaj xyuas
Cov txheej tiav yuav tsum tau kuaj xyuas thiab kuaj xyuas kom ntseeg tau tias nws ua tau raws li tus qauv kev cai. Cov kev ntsuam xyuas tseem ceeb suav nrog:
Thickness:Cov txheej txheem qhuav zaj duab xis thickness (DFT), feem ntau nyob rau hauv qhov ntau ntawm350-500 µm (14-20 mils).
Catholic Disbondment (CD):Ib qho kev ntsuas tseem ceeb uas ntsuas cov txheej tiv thaiv kom tsis txhob cuam tshuam (kev tshem tawm ntawm cov hlau) thaum muaj hluav taws xob cuam tshuam ntawm cathodic tiv thaiv kab ke. Tus qauv teeb tsa qhov siab tshaj plaws kev sib cais radii tom qab 28-hnub lossis 48-hnub xeem.
Adhesion:Ntsuas los ntawm kev kuaj tev. Cov txheej yuav tsum muaj qhov tsawg kawg nkaus daim ntawv cog lus.
Flexibility (Bend Test):Cov yeeb nkab coated yog khoov ib ncig ntawm lub mandrel mus rau ib txoj kab uas hla uas tsis muaj txheej txheej tawg lossis tawg.
Impact Resistance:Cov txheej txheej muaj peev xwm tiv thaiv kev puas tsuaj los ntawm cov pob zeb lossis kev tuav, sim los ntawm kev poob qis rau ntawm qhov chaw coated.
Hardness:Ntsuas siv mem hluav hardness test los yog lwm txoj kev.
Porosity (Holiday Detection):Tag nrho cov coated nto yog scan nrog lub siab -voltage hnub so detector kom pom tej pinholes los yog voids nyob rau hauv rwb thaiv tsev.
Cov ntsiab lus tseem ceeb thiab kev lag luam
Kev siv dav dav:SY/T 0315-2002 yog tus qauv de facto rau feem ntau ntawm ntug dej hiav txwv thiab offshore roj thiab roj pipelines ua nyob rau hauv Tuam Tshoj thaum lub sij hawm 2000s thiab thaum ntxov 2010s.
Foundation rau Kev Tiv Thaiv Corrosion:Nws tau muab cov txheej txheem nruj, ua tau zoo -tswj lub moj khaum uas txhim kho lub neej ntev thiab kev nyab xeeb ntawm cov kav xa dej.
Ib feem ntawm qhov System:FBE txheej tau teev tseg los ntawm tus qauv no feem ntau yog siv los ua ib qhoprimer txheejnyob rau hauv ntau txheej txheej txheej, xws li3-Txheej Polyethylene (3LPE)los yog3-Txheej Polypropylene (3LPP)systems, qhov twg nws muab zoo adhesion rau cov hlau.
Cov xwm txheej tam sim no: Superseded
Nws yog ib qho tseem ceeb uas yuav tsum nco ntsoov tias SY/T 0315-2002 tau hloov pauv.
Hloov los ntawm: SY/T 0315-2013
Yog vim li cas hloov tshiab:Kev hloov kho xyoo 2013 suav nrog kev nce qib thev naus laus zis, kev sim ua kom zoo dua qub, thiab ua raws tus qauv zoo dua nrog kev hloov kho thoob ntiaj teb kev coj ua zoo tshaj plaws (xws li ISO 21809). Cov ntsiab cai tseem ceeb tseem nyob, tab sis cov kev cai tshwj xeeb thiab cov ntsuas ntsuas tau hloov kho.
Cov ntsiab lus
| Yam | Kev piav qhia |
|---|---|
| Lub Npe | SY/T 0315-2002 "Standard for External Fusion Bonded Epoxy Txheej rau Steel Yeeb Nkab" |
| Kev lag luam | Petroleum thiab Natural Gas (Tuam Tshoj) |
| Lub hom phiaj | Qhia meej txog qhov yuav tsum tau ua rau sab nraud FBE corrosion txheej ntawm cov kav dej steel. |
| Cov txheej txheem tseem ceeb | Kev npaj deg, cua sov, siv hmoov, kho, tshuaj xyuas & kuaj. |
| Cov Kev Xeem Tseem Ceeb | Thickness, Cathodic Disbondment, Adhesion, Flexibility, Impact Resistance, Soj Ntsuam Xyuas. |
| xwm txheej | Supersededlos ntawm qhov hloov tshiab versionSY/T 0315-2013. |
Yog tias koj tab tom ua haujlwm ntawm ib qhov project, koj yuav tsum nco ntsoov xa mus rau qhov tseeb version ntawm tus qauv, uas yogSY/T 0315-2013. Txawm li cas los xij, kev nkag siab SY / T 0315-2002 yog qhov tseem ceeb rau kev ntsuam xyuas cov kev qhia tshwj xeeb ntawm cov kav dej uas tau tsim thaum lub sijhawm siv tau.
