純化水管線酸洗鈍化方案

v1.0可編寫可改正附件20衛(wèi)生級管路酸洗鈍化方案SanitaryPipeChemicalPickled&PassivationProcedure草擬/審查署名日期草擬人審查/同意1v1.0可編寫可改正目錄TABLEOFCONTENTS附件201衛(wèi)生級管路酸洗鈍化方案11編制方案的依照Basisofschemecompilation32工作范圍Workingscope33沖洗工藝Cleaningprocess44沖洗過程Cleaningprocess55廢液辦理Wasteliquortreatment106甲方供給的條件Conditionsuppliedbytheowner107暫時配管Temporarytubing118查驗與查收Testandaccept119安全122v1.0可編寫可改正1編制方案的依照Basisofschemecompilation1.1管道沖洗的必需性Necessityofpipingcleaning純化水不銹鋼管道在使用前，要進行脫脂、酸洗、鈍化和消毒辦理，管道才能達到生產使用的技術要求。Beforeusedstainlesssteelpipingforpurifiedwatershouldbedegreased,pickled,passivityanddisinfected.Onlyinthiswaycanpipingmeettechnicalneedsofproductionandusage.1.2《脫脂工程施工及查收規(guī)范》HG20202-2000。ConstructionandAcceptanceCriteriaofIndustrialPiping1.3《工業(yè)設備化學沖洗質量標準》HG/T2387-2007QualityCriteriaofChemicalCleaningforIndustrialEquipment1.4VWS供給的圖紙DrawingssuppliedbyVWS1.5管線的材質為所有為316L，若有其余材質，沖洗前一定說明。Materialofpipelineisall316L.Giveadescriptionofthematerialbeforecleaningifothermaterialsareused.2工作范圍Workingscope主要為衛(wèi)生級不銹鋼SS316L管道MainlyforsanitarySS316Lpipe.2.1從純水制造機到純水TANK接口前級的循環(huán)管道；PipesfromOriontowatertankandpipesofwatertankreturningtothefronttank.2.2純水循環(huán)管道；PWloopdistributionPipes.3v1.0可編寫可改正3沖洗工藝Cleaningprocess3.1采納我企業(yè)多年景熟的不銹鋼管道沖洗工藝。Adoptcleaningprocessforstainlesssteelpipewhichwearegoodat.3.2管道的沖洗工藝為：Pipingcleaningprocessisasfollows:暫時配管成立循環(huán)回路formcirculation——水沖洗waterflush——脫脂degrease——水沖洗rinsebywater——酸洗pickling,鈍化passivation——水沖洗rinsebywater——系統(tǒng)恢復systemreset3.3設備、管線系統(tǒng)內不宜沖洗的零件：Componentsintheequipmentandpipingthatarenotsuitabletobecleaned沖洗系統(tǒng)中的儀表類（一次儀表、二次儀表及儀表傳感器）和UV殺菌燈、熱互換器（板式及管殼式）對沖洗液敏感的零件應暫時拆掉。Othercomponents,suchas1stloopinstrument,2ndloopinstrumentandothertransmitter,UV,HX(includingplatetypeandtube/shell)thatarenotinconformitywithmaterialandaresensitivetocleaningagent,suchasflowmeter,conductivitymeter,levelmeter,wiring,tank,etcshouldbedismantledtemporarily.3.4管線系統(tǒng)內不參加沖洗的短管等拆掉的零件采納浸泡沖洗，沖洗達成后經查驗合格后用塑料保鮮膜包扎，等管線系統(tǒng)沖洗達成后再安裝復位。Allcomponentsdidnotinvolvedonthepipelinetobesoakedandcleaned.Aftercleanedandtested,itmustbepackedwithplasticfilm.Installedandpositionedafterpipecleanfinished.3.5沖洗流程Cleaningprocess3.5.1.所有需要沖洗的管道用暫時管道連結形成沖洗循環(huán)系統(tǒng)，采納循環(huán)4v1.0可編寫可改正沖洗，沖洗時成立一個循環(huán)回路.Allpipingthatneedcleaningshouldbeconnectedbytemporarypipingtoformcirculationsystem.Circulatingcleaningisusedandoneloopwasformedwhenproceedingwithcleaning.3.5.2.沖洗流程圖4沖洗過程Cleaningprocess所有沖洗系統(tǒng)的過程是同樣的。Allcleaningsystemhavethesameprocess.4.1人工辦理Manualhandling4.1.1.管線在沖洗前要做全面檢查，設備材質和方案中所列要一致。Pipelinesshouldbeinspectedintheoverallperspectivebeforecleaningandmakesurethatequipmentmaterialisinconformitywiththatlistedinthescheme.4.1.2.不參加沖洗的被隔絕的儀表閥門等要在沖洗前檢查確認Isolatedinstrumentsandvalvesthatarenotcleanedshouldbecheckedbeforecleaning。4.1.3.測試樣品一定包括兩個新焊的，未沖洗的焊縫。一個安裝在將要沖洗的管路中，此外一個放在化學沖洗罐內;.4.2水沖洗：水沖洗及試壓的目的在除掉管線內表面積灰、泥沙、零落的金屬氧化物及其余松散污垢，并在模擬沖洗狀態(tài)下對暫時沖洗回路進行泄露檢查。Rinsewithwater.Rinseandpressuretestaimtoremoveashes,mudandshedmetallicoxideandotherloosedirtonthesurfaceofpipelinesandproceedwithleaktestontemporarycleaningloopunder5v1.0可編寫可改正thecircumstancesofcleaningstimulation.用純化水（氯離子小于）進行沖洗，沖洗時控制出入水均衡。沖洗的同時檢查沖洗循環(huán)系統(tǒng)能否有泄露等狀況發(fā)生，假若有，在沖洗劑增添前要處理好。Rinsewithpurifiedwater(chlorineionislessthan.Inrinseprocesscontrolthebalancebetweenincomingandoutgoingwaterandcheckifcirculatingsystemleaks.Ifso,doitwellbeforeaddingcleaningagent.4.3脫脂：脫脂辦理的目的系統(tǒng)內表面在制作、安裝、過程中產生的油脂，使酸洗液能完好，完全地和系統(tǒng)內表面接觸，進而使沖洗完全，鈍化膜完好；Degrease.Itaimstodegreasetheoilproducedinthefabrication,installationofinnersurfaceofsystemtomakepicklingagentgetinfullcontactwithinnersurfacesystem.Thereforecleaningcanbefinishedfullyandpassivationmembraneisincompletesituation.4.3.1.操作步驟，系統(tǒng)加入純化水（氯離子小于）至預約液位，開始循環(huán)，并加入堿洗藥劑。Procedure.Injectpurifiedwater(chlorineionislessthanintothesystemandbeginthecirculation.Andaddalkalinecleaningmedicamentforstainlesssteelanddegreasingfinishes.4.3.2.工藝條件：Process溫度temperature常溫normaltemperature循環(huán)時間circulatingtime2小時hours循環(huán)時間可依據(jù)天氣、管道復雜狀況適合延伸或縮短。Circulatingtimecanbelengthenedorshortenedaccordingtotheweatherandpiping.4.3.3.脫脂藥劑：Degreasingmedicament6v1.0可編寫可改正序號名稱NoName1氫氧化鈉直到其濃度為2%-3%4.3.4.測試項目：ItemstobetestedPH1次/半小時once/halfhour脫脂液PH要求保持在12以上，當PH小于12時應增添氫氧化鈉。PHofDegreasingagenttobekeptasabove12andsufficientdegreasingagenttobeadded.PH測試使用PH試紙PHcheckedwithPHtestpaper4.4水力沖洗：水力沖洗的目的是除掉脫脂后零落的污物，并將系統(tǒng)表面殘留的脫脂液沖洗潔凈。Waterrinsetogetridofshedordureandflushremainingdegreasingagentonsystemsurfaceclean.4.4.1.操作步驟，排盡系統(tǒng)內脫脂液，用大批水沖洗。Operationprocedure.Draindegreasingsolutioninthesystemandflushthesystemwithenoughwater.4.4.2.測試項目，用視覺察看沖洗水至透明無微粒，測定PH小于9。Itemstobetested.CheckflushwatertobetransparentwithnoparticulatevisuallyandmakesurePHvaluelessthan9.PH2次/半小時twice/halfhourPH測試使用PH試紙，當PH小于等于9時水沖洗達成。PHcheckedwithPHtestpaperandwaterflushfinishedwhenPH<9.4.5酸洗：酸洗的目的是利用酸洗液將金屬表面的鐵銹氧化物等污垢進行化學7v1.0可編寫可改正和電化學反響，生成可溶性物質，并利用酸洗液的沖洗作用除掉污垢。Pickling.Picklingaimstomakedirtlikerustedoxideonthesurfaceofmetalproceedwithchemicalandelectromechanicalreactiontoproducedissolublematerialandgetridofdirtwithpicklingsolution.4.5.1.操作步驟，排凈系統(tǒng)水沖洗殘液后，隨即系統(tǒng)加水至必定液位循環(huán)，加入不銹鋼專用酸洗劑，隨后增補水至控制液位。沖洗過程中按期排污排空。Operationprocedure.Afterremainingrinsesolutionisdrainedaway,injectacertainamountofwaterintothesystemtoacertainlevelforcirculation.Addspecialpicklingmedicamentforstainlesssteelintoit.Theninjectacertainwatertocontrollevel.Blowdownthewasteperiodicallyduringcleaning.4.5.2.工藝條件：Processsituation沖洗溫度cleaningtemperature常溫normaltemperature循環(huán)時間circulatingtime2小時hours4.5.3.酸洗鈍化藥劑：序號名稱NoName1檸檬酸，保證濃度在10%~15%4.5.4.測試項目：ItemstobetestpH值PHvalue1次/半小時twice/halfhour酸洗液PH要求小于等于1，當PH大于１時應增添檸檬酸，保證濃度在10%~15%。PickedchemicalPHlessthan1andpickedchemicaltobeaddedincasePHishigherthan1.8v1.0可編寫可改正PH測試使用PH試紙PHcheckedwithPHtestpaper4.6水沖洗：鈍化達成后的水沖洗是為了把殘留的鈍化液除掉。Waterrinse.Waterrinseafterfinishingpassivationistogetridofremainingpassivationsolution.4.6.1.鈍化結束后，排盡鈍化液洗液，用純化水（氯離子小于）進行沖洗，除掉殘留的鈍化液，當PH直靠近中性Ph>6，電導率差小于μs/cm，即可結束。Afterfinishingpassivation,drainawaysolutionforpassivationandflushwithpurifiedwater(chlorineiconislessthantoremoveremainingpassivationsolution.WhenPHisclosetotheneutralization(pH>6),differenceofconductivitylessthan1μs/cmpassivationfinishes.4.6.2.工藝條件Processcondition沖洗溫度cleaningtemperature常溫normaltemperature4.6.3.測試項目：ItemstobetestedPH2次/半小時twice/halfhour電導率conductivity2次/半小時twice/halfhourPH測試使用PH試紙PHtestbyPHtestpaper.使用電導率儀測定電導率Condtestedbycond.Meter.4.7系統(tǒng)恢復，沖洗達成后將系統(tǒng)恢還原樣。Systemreset.Getthesystembackafterfinishingcleaning.9v1.0可編寫可改正4.8假如系統(tǒng)長時間不投入使用，建議用氮氣封存。Ifthesystemisnotputintouseforalongtime,nitrogenissuggestedforsealing.5廢液辦理Wasteliquortreatment5.1各沖洗過程中的沖洗水，未增添沖洗劑，能夠直接排放。Flushwaterwithoutcleaningadditiveduringcleaningcanbedischargeddirectly.5.2酸洗液的廢液，鈍化液的廢液，用槽罐車把廢水運輸?shù)綇U水辦理廠辦理排放。Wasteliquorofpicklingsolutionandgreasingsolutionshouldbedeliveringwithtankcartowastewatertreatingplantforhandlinganddischarging.6甲方供給的條件Conditionsuppliedbytheowner甲方負責供給以下公用設備：Thefollowingutilitiesareprovidedbytheowner.6.1水：全程采納純化水，純化水要求氯離子小于，使用ORION純化水.Purifiedwaterisusedthroughthesystemandpurifiedwatershouldincludelessthanchlorineicon.Orionwillprovidethepurifiedwaterforchemicalpickledandpassivation..6.2電源(沖洗時使用純化水泵)。Powersupply.Purifiedwaterpumpisusedwhencleaning.6.3干燥無油的壓縮空氣或氮氣，MPa。DrycompressedairornitrogenwithnooilofMPa.10v1.0可編寫可改正7暫時配管Temporarytubing7.1暫時配管是指將沖洗系統(tǒng)中管道連結起來，形成沖洗循環(huán)回路，沖洗達成后需要拆掉的管道和設備。TemporarytubingisthepipingandfacilitythatneedbedismantledaftercleaningConnectpipinginthecleaningsystemtoformcirculatingloop.7.2暫時配管用軟塑料管。Temporarytubingadoptssoftplastictube.8查驗與查收Testandaccept8.1鈍化表面目測，鈍化膜完好，顏色一致。Checkthesurfaceofpassivationvisuallytomakesurethatpassivationfilmiscompleteandhasthesamecolor.8.2在回路的最后一個焊縫采納鐵氰化鉀溶液顯藍測定，變色時間大于30秒鐘。Onlastweldingseam,Adoptpotassi