纯化水管线酸洗钝化方案

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1、附件20卫生级管路酸洗钝化方案SanitaryPipeChemicalPickled&PassivationProcedure起草/审核签名日期起草人审核/批准目录TABLEOFCONTENTS1编制方案的依据Basisofschemecompilation32工作范围Workingscope33清洗工艺Cleaningprocess34清洗过程Cleaningprocess55废液处理Wasteliquortreatment96甲方提供的条件Conditionsuppliedbytheowner97临时配管Temporarytubin

2、g108检验与验收Testandaccept109安全111编制方案的依据Basisofschemecompilation1.1管道清洗的必要性Necessityofpipingcleaning纯化水不锈钢管道在使用前，要进行脱脂、酸洗、钝化和消毒处理，管道才能达到生产使用的技术要求。Beforeusedstainlesssteelpipingforpurifiedwatershouldbedegreased,pickled,passivityanddisinfected.Onlyinthiswaycanpipingmeettechni

3、calneedsofproductionandusage.1.2《脱脂工程施工及验收规范》HG20202-2000。ConstructionandAcceptanceCriteriaofIndustrialPiping1.3《工业设备化学清洗质量标准》HG/T2387-2007QualityCriteriaofChemicalCleaningforIndustrialEquipment1.4VWS提供的图纸DrawingssuppliedbyVWS1.5管线的材质为全部为316L，如有其它材质，清洗前必须说明。Materialofpip

4、elineisall316L.Giveadescriptionofthematerialbeforecleaningifothermaterialsareused.2工作范围Workingscope主要为卫生级不锈钢SS316L管道MainlyforsanitarySS316Lpipe.122.1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；PWloopdistributionPip

5、es.3清洗工艺Cleaningprocess31.1采用我公司多年成熟的不锈钢管道清洗工艺。Adoptcleaningprocessforstainlesssteelpipewhichwearegoodat.1.2管道的清洗工艺为：Pipingcleaningprocessisasfollows:临时配管建立循环回路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sys

6、temreset1.3设备、管线系统内不宜清洗的部件：Componentsintheequipmentandpipingthatarenotsuitabletobecleaned清洗系统中的仪表类（一次仪表、二次仪表及仪表传感器）和UV杀菌灯、热交换器（板式及管壳式）对清洗液敏感的部件应临时拆除。Othercomponents,suchas1stloopinstrument,2ndloopinstrumentandothertransmitter,UV,HX(includingplatetypeandtube/shell)thatare

7、notinconformitywithmaterialandaresensitivetocleaningagent,suchasflowmeter,conductivitymeter,levelmeter,wiring,tank,etcshouldbedismantledtemporarily.1.4管线系统内不参与清洗的短管等拆除的部件采用浸泡清洗，清洗完成后经检验合格后用塑料保鲜膜包扎，等管线系统清洗完成后再安装复位。Allcomponentsdidnotinvolvedonthepipelinetobesoakedandclean

8、ed.Aftercleanedandtested,itmustbepackedwithplasticfilm.Installedandpositionedafterpipecleanfinished.1.5