管道吹扫方案

中国石油编号：安第斯石油公司厄瓜多尔有限公司燃料厂检修工程ANDESPETROLEUMECUADORLTD。FuelPlantTurnaroundProject工艺管道吹扫PipelinePurgingProcedure中国石油工程建设公司ChinaPetroleumEngineering＆ConstructionCorp。2013年2月February2013目录ContentsTOC\o”1-3"\h\z\uHYPERLINK\l"_Toc349613889”1、编制CompilationDescriptionPAGEREF_Toc349613889\h1HYPERLINK\l”_Toc349613890"1。1工程说明EngineeringDescriptionPAGEREF_Toc349613890\h1HYPERLINK\l"_Toc349613891"1。2编制依据EstablishmentsBasisPAGEREF_Toc349613891\h1HYPERLINK\l"_Toc349613892”2、工程概况EngineeringOverviewPAGEREF_Toc349613892\h1HYPERLINK\l”_Toc349613893”3、吹扫目的PurposeforpurgingPAGEREF_Toc349613893\h2HYPERLINK\l"_Toc349613894”4、空气吹扫AirpurgePAGEREF_Toc349613894\h2HYPERLINK\l"_Toc349613895”4。1吹扫方法PurgingmethodPAGEREF_Toc349613895\h2HYPERLINK\l"_Toc349613896”4.2吹扫注意事项PrecautionsforpurgingPAGEREF_Toc349613896\h3HYPERLINK\l”_Toc349613897"5、合格QualifiedstandardPAGEREF_Toc349613897\h4PAGE\*MERGEFORMAT11、编制说明CompilationDescription1.1工程说明EngineeringDescription安第斯石油厄瓜多尔燃料厂检修工程共分为三个装置，分别为初馏装置、气体装置分馏装置。检修工作主要对装置的塔类设备、容器类设备、空冷器设备、换热器类设备、加热炉、工艺管道和电气仪表专业进行。AndesPetroleumEcuadorLtd.hasthreefuelplants：Gas，FractioningandToppingPlants。Themaintenanceserviceforthethreeplantswillbeincludedbutnotlimitedtotower,container,aircooler，andheatexchanger，heatingfurnace,pipingandelectrical&instrumentworksthistime。1。2编制依据EstablishmentsBasis中国石油工程建设公司《程序文件》、《质量保证手册》和#管理#。安第斯提供的图纸及相关资料.ChinaPetroleumEngineeringConstructionCompany"ProgramFiles”,"QualityAssuranceHandbookandmanagementsystem。TheANDESprovidedrawingsandrelatedmaterials。2、工程概况EngineeringOverview本次检修的三套装置中，装置内运行的介质属于易燃、易爆物料,工艺管线的检修内容主要包括：安装盲板、配合业主和第三方对管线检查，部分管线更换；阀门检查，阀门更换；安全阀检查、校验;垫片更换；施工需要拆除的管线的恢复及对腐蚀和磨损严重的管线或管件更换等。管线材质涉及碳钢、不锈钢管和耐热钢管，在检测的过程中如果发现壁厚超标要及时报告业主进行处理，业主确认后同意更换该部分管线或管件后要及时向业主报材料.Themediumoperatedinthethreeplantsbelongstothematerialswhichiseasytobeinflammableandexplosive。Therefore,thecontentsformaintenanceservicewillbeincludedbutnotlimitedtothefollowingitems:installblind,cooperatewithclientandthethirdpartytoinspectandreplacethepipingifnecessary；inspectandreplacevalveifnecessary;inspectandcalibratesafetyvalveandreplacethegasket;re—installthepipingandreplacethedamagedorrusted.Thematerialsofthepiperefertothecarbonsteel，stainlesssteelandheatresistingpipe.Reporttheclientforapprovaltohandleifthethicknessofpipeisfoundbeyondtherequireddesignandalsoreportthematerialsapplicationplantoclientaftertheapprovalisconfirmedtoreplacethepipe.3、吹扫目的Purposeforpurging彻底吹扫出蒸汽管线内的氧化层、腐蚀产物、焊接残余物、赃物等，同时将金属表面的浮锈吹扫干净,以避免设备在运行时,浮锈及某些固体颗粒损坏汽轮机叶片，从而影响整个装置的生产。Thoroughlypurgedoutoftheoxidelayerwithinthesteamline，corrosionproducts，weldingresidue，stolengoods，etc。，whiletherustofthemetalsurfaceispurgedtoavoiddeviceatruntime,rustandsomesolidparticlesdamagetheturbineblades,therebyaffectingtheproductionoftheentireapparatus。4、空气吹扫Airpurge4。1吹扫方法Purgingmethod4.1.1利用业主提供的工厂风作为吹扫气源,如果不具备工厂风,利用空压机，增设储气罐作为吹扫气源。Factorywindasapurgegassource，don’thavethefactorywind,theuseofaircompressors,theadditionofthegastankasapurgegassource.4.1。2管道系统水压试验的盲板不能拆除，作为吹扫系统的临时挡板。Pipingsystemhydraulicpressuretestoftheblindplatecouldn’tteardown，asblowingsystemtemporarydamper.4.1。3隔离不允许吹扫的设备和管道;拆除已安装的孔板、法兰连接的调节阀、重要阀门、节流阀、安全阀、仪表等，对于焊接的上述阀门和仪表，采取流经旁路或卸掉阀头及阀座加保护套等保护措施.Theisolationnotallowedtopurgetheequipmentandpiping；dismantleinstalledorificeregulatingvalveflangeconnection，itisimportantvalves，throttlevalves，safetyvalves,instrumentation,etc。,forweldingthevalveandinstrumentation,totaketheflowthroughthebypassRemovethevalveheadandseatplusprotectivesleeveorprotectivemeasures.4.1。3在系统内选择放空口或者排凝口作为进气口，并制作软管连接接头。Withinthesystemtoselecttheventportastheintakeportoranexhaustcondensate,andtheproductionofthehoseconnector.4。1.4利用软管将气源和吹扫系统进气口连接,开启进气口管道系统阀门,进行吹扫。Thehoseinletconnectionofthegassourceandthepurgesystem,openingofthepipingsystemoftheairinletvalvesandpurge.4.1.5系统吹扫时,所有导淋、放空阀等同时吹扫,但必须在系统吹扫基本干净后，才能吹扫。Systempurge,allguidedcream,theventvalveandsimultaneouslypurge，butitmustbeinabasiccleansystempurgetopurge.4.1。6吹扫时应尽量将排放口错开一段间距，无法错开时应在下一管口前加铁皮挡板，并在排气口与挡板间留着一定间隙，有利于管线内杂物的排出。Purgeshouldtrytostaggertheoutfallsomespacingtheplusironbafflebeforethenextnozzleshouldnotbeabletostagger,andkeepacertaingapbetweentheexhaustportandthebaffle,isconducivetothepipelinesdebrisdischarge.4。1.7有副线的各调节阀应先通过付线吹扫，无付线的要拆下阀体,加装临时短管向下游吹扫。Vicelineseachshouldpaylinepurgewithoutpaylineremovethevalve,theinstallationofatemporaryshorttubedownstreampurgecontrolvalve。4.1。8吹扫管线上的单向阀与吹扫空气的流向相反时，单向阀应调向或拆除用短节代替使气流通过，所有调向的单向阀均要登记标注并编号，吹扫结束后专人负责复位。Checkvalveinthepurgelinewithapurgeairflowsintheopposite，thecheckvalveshouldbeadjustedtoorremovalofshortsectioninsteadoftheairflowthroughalltunetoacheckvalvetoberegisteredlabeledandnumbered,purgeendsafterthepersonresponsibleforreset.4。1。9联锁阀、电动阀不能作为吹扫用阀，吹扫干净的系统可以将这类阀门投用.Interlockvalve，electricvalvecan’tbeusedasapurgevalve，Blowingcleaninsidethesystemofthiskindofvalvecanbetherevamping。4。2吹扫注意事项Precautionsforpurging4.2.1吹扫管线上安装的所有过滤器、止回阀、流量计、孔板、调节阀等需要拆除，用短管连接。Installedonthepurgelinefilter,checkvalves，flowmeters，orifice，regulatingvalveneedtoberemoved，withtheshorttubeconnection.4.2。2所有仪表线的引压阀、压力表手阀、液位计连通阀以及采样阀等需要关闭。在系统吹扫基本干净后，才对吹扫仪表引压管、导淋、放空阀等进行吹扫。Allinstrumentimpulselinevalves，pressuregaugeshandvalve,thelevelgaugeconnectivityvalveandsamplingvalveneedstoclose.Inbasiccleansystempurge，fishespurgemetercitedpressurepipeguideshowerventvalve，purge。4。2。3吹扫口的开口距离在5cm以上，吹扫时,必须注意安全，排放口要设立明显的标志，并有专人监护，以防伤人。Purgemouthopeningdistanceofmorethan5cm，purge,mustpayattentiontosecurity,outfalltoestablishobvioussign,andtosupervise,topreventinjury.4。2.4检验管道支吊架的牢固程度，必要时应予以加固。Thetestpipesupportsandhangersasstrong,ifnecessary，shouldbereinforced。4。2。5在吹扫安全阀时，应在与管道连接处的法兰断开并加挡板保护阀口,吹扫气体从档板前排放。Inthesafetyvalveofthepurgeshouldbedisconnectedinconnectionwiththepipeattheflangeplusbaffleprotectionvalveport,thepurgegasisdischargedfromthebafflebefore.4.2。6要遵循先少量给空气贯通、排水，再提量空气吹扫的原则:首次给空气吹扫或突然提空气量时，在排放口要有专人监护，以免吹出杂物刺伤人员。排放口最好用物品挡住,以免脏物飞溅.Tofollowasmallamountthroughtheair，drainage，mentiontheamountoftheairpurgeprinciple:thetopurgeorsuddenmentionoftheamountofairtotheairforthefirsttime,inthedischargeporttohavesomeonecaretoavoidblowingdebrisstabbed.Theoutfallisbestblockedbyotherobjectstopreventdirtsplashing。4.2。7空气进设备必须缓慢，要有一个缓慢的升压过程，以防突然升压而导致系统空气压力波动.Slowairintothedevicemusthaveaslowstep-upprocess，topreventasuddenboostsystemairpressurefluctuations.4.2。8吹扫时，注意安全，防止铁屑吹入眼睛，空气引入装置后，凡需进入的容器设备管道必须事先进行确认方可进入。Purge,attentiontosafety,topreventtheironfilingsblownintotheeyes,Ifstudentsenterthecontainerairaftertheintroductionofthedevice,thedevicepipelinemustbeconfirmedbeforeentering。4。2.9空气吹扫时，宜进行间断性吹扫，空气流速不得不于20m/s。Airpurgeshouldbecarriedoutintermittentpurgeairflowratehadto20m/s。5、合格标准Qualifiedstandard在排出口用白布作为靶板检查，在5分钟内靶板上无铁锈及其他杂物为合格或通过观察凝液的透明度，无铁锈为合格。CheckthedischargeportwithawhiteclothasTargetTargetnorustandotherdebriswithin5minutesasqualifiedorthroughthetransparencyoftheobservationofcondensate,norustisqualified。