纯化水管线酸洗钝化方案

v1.0可编写可改正附件20卫生级管路酸洗钝化方案SanitaryPipeChemicalPickled&PassivationProcedure草拟/审查署名日期草拟人审查/同意1v1.0可编写可改正目录TABLEOFCONTENTS附件201卫生级管路酸洗钝化方案11编制方案的依照Basisofschemecompilation32工作范围Workingscope33冲洗工艺Cleaningprocess44冲洗过程Cleaningprocess55废液办理Wasteliquortreatment106甲方供给的条件Conditionsuppliedbytheowner107暂时配管Temporarytubing118查验与查收Testandaccept119安全122v1.0可编写可改正1编制方案的依照Basisofschemecompilation1.1管道冲洗的必需性Necessityofpipingcleaning纯化水不锈钢管道在使用前，要进行脱脂、酸洗、钝化和消毒办理，管道才能达到生产使用的技术要求。Beforeusedstainlesssteelpipingforpurifiedwatershouldbedegreased,pickled,passivityanddisinfected.Onlyinthiswaycanpipingmeettechnicalneedsofproductionandusage.1.2《脱脂工程施工及查收规范》HG20202-2000。ConstructionandAcceptanceCriteriaofIndustrialPiping1.3《工业设备化学冲洗质量标准》HG/T2387-2007QualityCriteriaofChemicalCleaningforIndustrialEquipment1.4VWS供给的图纸DrawingssuppliedbyVWS1.5管线的材质为所有为316L，若有其余材质，冲洗前一定说明。Materialofpipelineisall316L.Giveadescriptionofthematerialbeforecleaningifothermaterialsareused.2工作范围Workingscope主要为卫生级不锈钢SS316L管道MainlyforsanitarySS316Lpipe.2.1从纯水制造机到纯水TANK接口前级的循环管道；PipesfromOriontowatertankandpipesofwatertankreturningtothefronttank.2.2纯水循环管道；PWloopdistributionPipes.3v1.0可编写可改正3冲洗工艺Cleaningprocess3.1采纳我企业多年景熟的不锈钢管道冲洗工艺。Adoptcleaningprocessforstainlesssteelpipewhichwearegoodat.3.2管道的冲洗工艺为：Pipingcleaningprocessisasfollows:暂时配管成立循环回路formcirculation——水冲洗waterflush——脱脂degrease——水冲洗rinsebywater——酸洗pickling,钝化passivation——水冲洗rinsebywater——系统恢复systemreset3.3设备、管线系统内不宜冲洗的零件：Componentsintheequipmentandpipingthatarenotsuitabletobecleaned冲洗系统中的仪表类（一次仪表、二次仪表及仪表传感器）和UV杀菌灯、热互换器（板式及管壳式）对冲洗液敏感的零件应暂时拆掉。Othercomponents,suchas1stloopinstrument,2ndloopinstrumentandothertransmitter,UV,HX(includingplatetypeandtube/shell)thatarenotinconformitywithmaterialandaresensitivetocleaningagent,suchasflowmeter,conductivitymeter,levelmeter,wiring,tank,etcshouldbedismantledtemporarily.3.4管线系统内不参加冲洗的短管等拆掉的零件采纳浸泡冲洗，冲洗达成后经查验合格后用塑料保鲜膜包扎，等管线系统冲洗达成后再安装复位。Allcomponentsdidnotinvolvedonthepipelinetobesoakedandcleaned.Aftercleanedandtested,itmustbepackedwithplasticfilm.Installedandpositionedafterpipecleanfinished.3.5冲洗流程Cleaningprocess3.5.1.所有需要冲洗的管道用暂时管道连结形成冲洗循环系统，采纳循环4v1.0可编写可改正冲洗，冲洗时成立一个循环回路.Allpipingthatneedcleaningshouldbeconnectedbytemporarypipingtoformcirculationsystem.Circulatingcleaningisusedandoneloopwasformedwhenproceedingwithcleaning.3.5.2.冲洗流程图4冲洗过程Cleaningprocess所有冲洗系统的过程是同样的。Allcleaningsystemhavethesameprocess.4.1人工办理Manualhandling4.1.1.管线在冲洗前要做全面检查，设备材质和方案中所列要一致。Pipelinesshouldbeinspectedintheoverallperspectivebeforecleaningandmakesurethatequipmentmaterialisinconformitywiththatlistedinthescheme.4.1.2.不参加冲洗的被隔绝的仪表阀门等要在冲洗前检查确认Isolatedinstrumentsandvalvesthatarenotcleanedshouldbecheckedbeforecleaning。4.1.3.测试样品一定包括两个新焊的，未冲洗的焊缝。一个安装在将要冲洗的管路中，此外一个放在化学冲洗罐内;.4.2水冲洗：水冲洗及试压的目的在除掉管线内表面积灰、泥沙、零落的金属氧化物及其余松散污垢，并在模拟冲洗状态下对暂时冲洗回路进行泄露检查。Rinsewithwater.Rinseandpressuretestaimtoremoveashes,mudandshedmetallicoxideandotherloosedirtonthesurfaceofpipelinesandproceedwithleaktestontemporarycleaningloopunder5v1.0可编写可改正thecircumstancesofcleaningstimulation.用纯化水（氯离子小于）进行冲洗，冲洗时控制出入水均衡。冲洗的同时检查冲洗循环系统能否有泄露等状况发生，假若有，在冲洗剂增添前要处理好。Rinsewithpurifiedwater(chlorineionislessthan.Inrinseprocesscontrolthebalancebetweenincomingandoutgoingwaterandcheckifcirculatingsystemleaks.Ifso,doitwellbeforeaddingcleaningagent.4.3脱脂：脱脂办理的目的系统内表面在制作、安装、过程中产生的油脂，使酸洗液能完好，完全地和系统内表面接触，进而使冲洗完全，钝化膜完好；Degrease.Itaimstodegreasetheoilproducedinthefabrication,installationofinnersurfaceofsystemtomakepicklingagentgetinfullcontactwithinnersurfacesystem.Thereforecleaningcanbefinishedfullyandpassivationmembraneisincompletesituation.4.3.1.操作步骤，系统加入纯化水（氯离子小于）至预约液位，开始循环，并加入碱洗药剂。Procedure.Injectpurifiedwater(chlorineionislessthanintothesystemandbeginthecirculation.Andaddalkalinecleaningmedicamentforstainlesssteelanddegreasingfinishes.4.3.2.工艺条件：Process温度temperature常温normaltemperature循环时间circulatingtime2小时hours循环时间可依据天气、管道复杂状况适合延伸或缩短。Circulatingtimecanbelengthenedorshortenedaccordingtotheweatherandpiping.4.3.3.脱脂药剂：Degreasingmedicament6v1.0可编写可改正序号名称NoName1氢氧化钠直到其浓度为2%-3%4.3.4.测试项目：ItemstobetestedPH1次/半小时once/halfhour脱脂液PH要求保持在12以上，当PH小于12时应增添氢氧化钠。PHofDegreasingagenttobekeptasabove12andsufficientdegreasingagenttobeadded.PH测试使用PH试纸PHcheckedwithPHtestpaper4.4水力冲洗：水力冲洗的目的是除掉脱脂后零落的污物，并将系统表面残留的脱脂液冲洗洁净。Waterrinsetogetridofshedordureandflushremainingdegreasingagentonsystemsurfaceclean.4.4.1.操作步骤，排尽系统内脱脂液，用大批水冲洗。Operationprocedure.Draindegreasingsolutioninthesystemandflushthesystemwithenoughwater.4.4.2.测试项目，用视觉察看冲洗水至透明无微粒，测定PH小于9。Itemstobetested.CheckflushwatertobetransparentwithnoparticulatevisuallyandmakesurePHvaluelessthan9.PH2次/半小时twice/halfhourPH测试使用PH试纸，当PH小于等于9时水冲洗达成。PHcheckedwithPHtestpaperandwaterflushfinishedwhenPH<9.4.5酸洗：酸洗的目的是利用酸洗液将金属表面的铁锈氧化物等污垢进行化学7v1.0可编写可改正和电化学反响，生成可溶性物质，并利用酸洗液的冲洗作用除掉污垢。Pickling.Picklingaimstomakedirtlikerustedoxideonthesurfaceofmetalproceedwithchemicalandelectromechanicalreactiontoproducedissolublematerialandgetridofdirtwithpicklingsolution.4.5.1.操作步骤，排净系统水冲洗残液后，随即系统加水至必定液位循环，加入不锈钢专用酸洗剂，随后增补水至控制液位。冲洗过程中按期排污排空。Operationprocedure.Afterremainingrinsesolutionisdrainedaway,injectacertainamountofwaterintothesystemtoacertainlevelforcirculation.Addspecialpicklingmedicamentforstainlesssteelintoit.Theninjectacertainwatertocontrollevel.Blowdownthewasteperiodicallyduringcleaning.4.5.2.工艺条件：Processsituation冲洗温度cleaningtemperature常温normaltemperature循环时间circulatingtime2小时hours4.5.3.酸洗钝化药剂：序号名称NoName1柠檬酸，保证浓度在10%~15%4.5.4.测试项目：ItemstobetestpH值PHvalue1次/半小时twice/halfhour酸洗液PH要求小于等于1，当PH大于１时应增添柠檬酸，保证浓度在10%~15%。PickedchemicalPHlessthan1andpickedchemicaltobeaddedincasePHishigherthan1.8v1.0可编写可改正PH测试使用PH试纸PHcheckedwithPHtestpaper4.6水冲洗：钝化达成后的水冲洗是为了把残留的钝化液除掉。Waterrinse.Waterrinseafterfinishingpassivationistogetridofremainingpassivationsolution.4.6.1.钝化结束后，排尽钝化液洗液，用纯化水（氯离子小于）进行冲洗，除掉残留的钝化液，当PH直靠近中性Ph>6，电导率差小于μs/cm，即可结束。Afterfinishingpassivation,drainawaysolutionforpassivationandflushwithpurifiedwater(chlorineiconislessthantoremoveremainingpassivationsolution.WhenPHisclosetotheneutralization(pH>6),differenceofconductivitylessthan1μs/cmpassivationfinishes.4.6.2.工艺条件Processcondition冲洗温度cleaningtemperature常温normaltemperature4.6.3.测试项目：ItemstobetestedPH2次/半小时twice/halfhour电导率conductivity2次/半小时twice/halfhourPH测试使用PH试纸PHtestbyPHtestpaper.使用电导率仪测定电导率Condtestedbycond.Meter.4.7系统恢复，冲洗达成后将系统恢还原样。Systemreset.Getthesystembackafterfinishingcleaning.9v1.0可编写可改正4.8假如系统长时间不投入使用，建议用氮气封存。Ifthesystemisnotputintouseforalongtime,nitrogenissuggestedforsealing.5废液办理Wasteliquortreatment5.1各冲洗过程中的冲洗水，未增添冲洗剂，能够直接排放。Flushwaterwithoutcleaningadditiveduringcleaningcanbedischargeddirectly.5.2酸洗液的废液，钝化液的废液，用槽罐车把废水运输到废水办理厂办理排放。Wasteliquorofpicklingsolutionandgreasingsolutionshouldbedeliveringwithtankcartowastewatertreatingplantforhandlinganddischarging.6甲方供给的条件Conditionsuppliedbytheowner甲方负责供给以下公用设备：Thefollowingutilitiesareprovidedbytheowner.6.1水：全程采纳纯化水，纯化水要求氯离子小于，使用ORION纯化水.Purifiedwaterisusedthroughthesystemandpurifiedwatershouldincludelessthanchlorineicon.Orionwillprovidethepurifiedwaterforchemicalpickledandpassivation..6.2电源(冲洗时使用纯化水泵)。Powersupply.Purifiedwaterpumpisusedwhencleaning.6.3干燥无油的压缩空气或氮气，MPa。DrycompressedairornitrogenwithnooilofMPa.10v1.0可编写可改正7暂时配管Temporarytubing7.1暂时配管是指将冲洗系统中管道连结起来，形成冲洗循环回路，冲洗达成后需要拆掉的管道和设备。TemporarytubingisthepipingandfacilitythatneedbedismantledaftercleaningConnectpipinginthecleaningsystemtoformcirculatingloop.7.2暂时配管用软塑料管。Temporarytubingadoptssoftplastictube.8查验与查收Testandaccept8.1钝化表面目测，钝化膜完好，颜色一致。Checkthesurfaceofpassivationvisuallytomakesurethatpassivationfilmiscompleteandhasthesamecolor.8.2在回路的最后一个焊缝采纳铁氰化钾溶液显蓝测定，变色时间大于30秒钟。Onlastweldingseam,Adoptpotassi