IGC 189-2006 yog dab tsi?
PIB 189-2006yog ib tug technical specification luam tawm los ntawm lubInternational Association of Oil & Gas Producers (IOGP). Nws lub npe tag nrho yog:
"Internal Epoxy Barrier Yeeb Nkab Txheej Cov Khoom Siv rau Kab Yeeb Nkab thiab Fittings rau kev thauj mus los ntawm Tsis yog -Corrosive Natural Gas"
Cov qauv no qhia txog cov kev xav tau raukua epoxy txheej cov ntaub ntawvsiv los tsim kev tiv thaiv kev tiv thaiv ntawm lubsab hauvntawm steel kav thiab fittings. Lub hom phiaj tseem ceeb yog los xyuas kom meej ib zaj duab xis du, tsis tu ncua uas txo kev sib txhuam, tiv thaiv kev xeb sab hauv (los ntawm cov kab mob me me lossis hauv ib puag ncig tshwj xeeb), thiab tswj cov khoom purity nyob rau hauv cov kav xa dej thauj tsis yog - corrosive natural gas.
Lub hom phiaj tseem ceeb thiab kev siv
Lub luag haujlwm tseem ceeb:Txhawm rau muab qhov muaj zog, tshuaj tiv thaiv kab mob uas tiv thaiv cov yeeb nkab sab hauv.
Cov txiaj ntsig tseem ceeb:
Txo kev sib txhuam:Ib tug du epoxy hauv ob sab phlu txo qhov kev sib txhuam hydraulic, uas tuaj yeem ua rau kom muaj peev xwm txaus thiab txo cov kev xav tau ntawm lub zog.
Kev Tiv Thaiv Corrosion:Tiv thaiv kev tiv thaiv sab hauv los ntawm cov kab dej, CO₂, chlorides, lossis lwm yam kab mob uas yuav muaj nyob hauv cov dej ntws.
Khoom Purity:Tiv thaiv kom tsis txhob muaj cov pa phem los ntawm xeb los yog lwm cov yeeb nkab khib nyiab.
Kev ncaj ncees:Pab tswj kom muaj kev ncaj ncees ntawm cov kav dej ntawm phab ntsa hla nws lub neej tsim.
Scope thiab Limitations
Nws yog ib qho tseem ceeb kom nkag siab txog qhov uas tau teev tseg los ntawm tus qauv lub npe:
Rau:Kab yeeb nkab, fittings (lub luj tshib, tees), thiab pipeline Cheebtsam.
Kev thauj mus los: Tsis yog -Natural corrosive.
Tsis yog rau:Cov qauv no yogTSIS TAUnpaj rau cov kav dej uas nqa cov kua dej corrosive xws li cov roj av, cov dej ua dej, lossis cov roj ntub dej uas muaj corrosive heev. Rau cov kev pabcuam no, cov ntaub ntawv tiv taus ntau dua li CRA (Corrosion Resistant Alloy) cladding lossis tshwj xeeb sab hauv txheej rau cov kav dej (xws li, rau DNVGL-RP-F102) yog siv.
Cov Lus Qhia Tseem Ceeb ntawm IGC 189-2006
Cov txheej txheem yog kev qhia dav thiab npog cov khoom siv, daim ntawv thov, thiab kev sim ntawm epoxy txheej. Nov yog cov chaw tseem ceeb uas nws nyob:
1. Cov khoom siv txheej txheej
Tus txheej txheem txhais cov kev cai rau cov kua epoxy tivthaiv (Tshooj A) thiab hardener (Tshooj B) ua ntej lawv sib tov, suav nrog:
viscosity
Qhov ntom
Tsis yog- Cov ntsiab lus tsis hloov pauv(Cov ntsiab lus tseem ceeb)
Xim
2. Cov cuab yeej ntawm cov yeeb yaj kiab kho tau
Qhov no yog qhov tseem ceeb ntawm qhov kev qhia tshwj xeeb, kom ntseeg tau tias cov txheej txheem siv tau ua tiav raws li qhov xav tau. Cov kev ntsuam xyuas tseem ceeb suav nrog:
Adhesion:Cov txheej txheem yuav tsum tau ua kom pom zoo adhesion rau cov hlau substrate, kuaj los ntawm kev rub tawm -tawm xeem (xws li,> 15 MPa).
Flexibility:Lub txheej yuav tsum tsis txhob tawg thaum lub coated steel phaj yog khoov ib ncig ntawm lub mandrel. Qhov no yog qhov tseem ceeb rau cov kav dej uas yuav txias - tsim los yog raug khoov thaum lub sijhawm teeb tsa.
Impact Resistance:Cov txheej yuav tsum tiv thaiv kev puas tsuaj los ntawm kev cuam tshuam, sim los ntawm kev poob qis rau ntawm qhov chaw coated.
Hardness:Ntsuas siv txoj kev zoo li Barcol lossis Shore D hardness testers kom ntseeg tau tias muaj kev puas tsuaj.
Chemical Resistance:Cov yeeb yaj kiab kho tau raug sim rau cov tshuaj tiv thaiv kab mob (piv txwv li, sodium hydroxide, hydrochloric acid) uas tsis muaj cov tsos mob ntawm blistering, softening, los yog poob ntawm adhesion.
Cathodic Disbondment:Thaum tseem ceeb tshaj rau cov txheej txheem sab nraud, qhov kev ntsuam xyuas no tuaj yeem suav nrog los ntsuas cov txheej txheem tiv thaiv kev tsis sib haum xeeb yog tias kev tiv thaiv cathodic raug cuam tshuam rau cov yeeb nkab sab hauv.
High Pressure Autoclave Testing:Ib qho kev ntsuas tseem ceeb uas cov qauv coated raug rau siab -siab, siab - qhov kub thiab txias simulating ib puag ncig ntawm cov kav xa dej los kuaj xyuas qhov blistering lossis degradation.
3. Daim ntawv thov thiab tshuaj xyuas
Tus qauv muab cov lus qhia rau:
Kev npaj nto:Cov hlau saum npoo yuav tsum tau moj tej tawg-ntxuav mus rau tus qauv siab heev, feem ntau yog Sa 2½ (Zoo-White Hlau) nrog rau ib qho chaw thauj tog rau nkoj.
Daim ntawv thov:Cov txheej txheem zoo li cov tshuaj tsuag tsis muaj cua feem ntau yog siv los ua kom lub cev tsis sib xws, pinhole -dawb zaj duab xis.
Kho:Qhov tshwj xeeb kub thiab lub sij hawm profiles yuav tsum tau ua kom cov txheej txheem tag nrho kho thiab txhim kho nws cov khoom kawg.
Kev tshuaj xyuas:Cov txheej txheem ntxaws ntxaws rau kev tshuaj xyuas qhov muag, thiab hnub so (pinhole) tshawb pom siv lub ntsuas hluav taws xob qis -voltage ntub daim txhuam cev kom ntseeg tau tias cov yeeb yaj kiab tsis tu ncua.
Hom Txheej Thickness
Tus qauv feem ntau qhia txog aDry Film Thickness (DFT)ntau yam, feem ntau nruab nrab ntawm250-450 microns (10 mus rau 18 mils). Qhov ntau npaum li cas tau pom zoo los ntawm tus neeg yuav khoom thiab tus neeg thov txheej txheej.
Kev sib raug zoo nrog Lwm Cov Qauv
ISO 15741:IGC 189-2006 yog nruj raws li tus qauv thoob ntiaj tebTS EN ISO 15741: 2015 ("Cov xim thiab cov kua roj vanish - Kev sib txhuam- txo cov coatings rau sab hauv ntawm - thiab offshore steel pipelines rau cov tsis yog-cov roj corrosive"). Feem ntau, lawv raug suav hais tias sib npaug lossis IGC 189 yog pom raws li kev lag luam roj thiab roj ua raws li ISO tus qauv.
Cov neeg siv khoom -Specific Specifications:Cov tuam txhab hluav taws xob loj (piv txwv li, Plhaub, BP, TotalEnergies) feem ntau muaj lawv tus kheej cov kev qhia tshwj xeeb sab hauv (DEPs, GEMS, thiab lwm yam) uas yuav ua raws li IGC 189-2006 tab sis suav nrog cov kev xav tau ntxiv los yog ntau dua.
Cov ntsiab lus
PIB 189-2006yog ib daim ntawv pov thawj tseem ceeb rau kev lag luam roj thiab roj. Nws ua kom ntseeg tau tias cov txheej txheem sab hauv epoxy rau cov kav xa hluav taws xob tau tsim, siv, thiab sim ua kom zoo ib yam, siab - tus qauv kev ua tau zoo. Los ntawm kev ua raws li IGC 189-2006, cov neeg ua haujlwm kav dej tuaj yeem ntseeg tau tias cov txheej txheem sab hauv yuav muab kev tiv thaiv mus ntev, tswj kev khiav dej num, thiab pab txhawb rau tag nrho kev ncaj ncees thiab kev nyab xeeb ntawm cov kav dej.
Tsis lees paub:Rau txhua qhov haujlwm tseem ceeb, ib txwm xa mus rau qhov tseeb version ntawm IGC 189-2006 tus qauv, vim tias cov ntsiab lus no yog rau cov ntaub ntawv xov xwm nkaus xwb.
