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():,,2005,24(1)4851,,,,,,3.3km,()6302.625km,4576(7)mm,S3604.0MPa,2.5MPa,1.6MPa,6108m3/a1996930,,,,,,80cm,,,,,,(1),313(2),3m202035,,35,,,,1.0m,,,,,(:2004205225):3065000,52-1;:(0316)20776148420054.0MPa,200210,:10239002300;10248002000;102520002200;10268001400;102728,,X5220,32450mm,37mm,16Mn(),/4.4MPa,4.0MPaE6010,E4316300mm200mm1,,1(741m),,12,457mm377mm50mm3,(2),,0.4MPa,,,,10min,3,,50mm50mm,,,,,,,,,,,94241:,(3),234,;;,5(377mm),,,,(457mm),,6,,,,,,7,8(1),,(4)4(2),(3),,,(4),,(5),1,SY/J0402-1998SY/T6150-19952,(35kg)(8kg)8,203(1)0520053(()):,,2004,23(1)5153,,,,,,,,(),200,,(),CO2SO2,,;,,;,20m,,(2),,(3),,,;5m,10m;(4),;(5),(6),,,,,,,,500104(:2004201214):3257061,,:(0546)839381515241,1968,1995,1970,2002,,1966,1989,,,1965,1987,,(),1963,1986,,1977,2004,,,,1972,1997,,,1972,2000,,,1973,1997,,,1952,1987,,1970,1992(),,1963,1990,,,1975,1999,,1967,1992,,1964,1990(),,(),,1960,1987,1997,,1973,1993,16241OilPipelineismade.ThetestresultsshowthattheforwardtransportationandreversepumpingtechniquewillnotobviouslylowerthePPDseffectivenesswhenthetemperatureofPPD-benefitedoilmeetstherequirementsthattheexperimentdetermined.Theeffectiveinnerdiameterofpipelineisestimatedbasedonthetemperatureandthroughputofoilvariedtheflowingdirection.TheminimumthroughputofpipelinerequiredforonedirectionPPD-benefitedoiltransportationiscalculatedonthebasisofequiva2lentheattransfercoefficientandtheeffectivenessofflowabilityformodifiedoil.TheinitialeconomiccomparisoniscarriedoutforthepipelineoperationontheFT/RPbasedway.SubjectHeadings:oiltransportation,forwardtransportationandreversepumping,experiment,PPD-benefitedtransportation,fieldexperimentCORROSIONCONTROL&INSULATIONYANGXiaohong:ApplicationofDuallayerFusionBondedEpoxyAnticorrosionSysteminGasPipeline,OGST,2005,24(1)4346.Duallayerfusionbondedepoxy(DuallayerFBE)anticorrosionsystemhascaughtattentionsofpipelineengineersforitsexcellentpropertiesandcomparativelowcost.Thispaperintroducesthelayerstructures,technicalindexes,productionpro2cess,advantagesandapplicationcategoriesoftheduallayerFBEsystem.SomeapplicationsoftheduallayerFBEsystemingaspipelineprojeetinChinaandabroadarepresented.ThecoatingcompaniesfortheduallayerFBEaregivenindetail.Ananal2ysisshowsthatthecoretechniqueforthissystemistheepoxypowderfortheoutlayer.TheprogressandproductionstatusfortheouterFBEcoatingarediscussed.SubjectHeadings:gaspipeline,duallayerfusionbondedepoxy,anticorrosionsystem,applicationHUANGHai:TheInvestigationontheHazardofDeepRootPlanttoBituminousProtectiveCoatingofGasPipeline,0GST,2005,24(1)4648.AninvestigationonthehazardofdeeprootplantstobituminousprotectivecoatingofgaspipelinesinSichuanProvinceandChongqingCityismade.Thesiteinvestigationandstatisticsresultsshowthatthetreeswithdifferenthazards(high,medium,low)tothepipelinesshouldbeseriously,moderatelyandcornmonlycontrolledsoastoensurethesafetyofthepipelines.Therelativemanagementstandardsareputforwardfromtheviewpointofpipelineoperationandtreeplanting.SubjectHeadings:gastransmissionpipeline,deeprootplant,bituminousprotectivecoating,safety,investigationCONSTRUCTIONTECHNIQUELIGuibin:In-linePipelinePluggingTechnique,OGST,2005,24(1)4851.ThispaperintroducesanapplicationcaseofanewtechnologyofinlinepipelineplugginginShanWuGasPipeline.ThepluggingoperationadoptsBritishTanktypepluggingtechnique.Theauthorconsidersthatthisnewtechniquewillprovideahelpfulreferencetootherpipelines.SubjectHeadings:gaspipeline,inlinepluggingtechnique,applicationfENERGYSAVING&ENVIORENMENTALPROTECTIONYANGDeweiandIANRiyi:EnergysavingandEnvironmentalProtectio.nOilfiredandGas-firedCondensa-