管道检查报告(中英文)ppt课件

今天对3个发酵罐以及发酵罐下的管道进行了检查，以下是检查情况。TodayweinspecttankCIPpipeandprocesspipe,belowistheresult.,发酵罐主要问题原因及处理建议。TankCIPpipeissuecauseandrepairadvice问题1、个别焊的部分缝氧化（原因：充气时间不足、变径与管径不一样大，焊接时间短、电流小），建议对这样的焊缝进行切割修补。Issue1,fewoftheseampartoxidation(probablycauses,purgegastimenotenough,sizedifferenceofreducerandpipe,shortweldingtimeandsmallweldingcurrent),氧化oxide,未熔合,咬边深Roughfitting,Notmerged,问题2：个别焊缝收尾有气孔（原因：电流大、缝隙大、收弧时间短），建议：不用切开，向管内充氩气、找到气孔再熔透焊接。Issue2:fewoftheweldingseamhasweldinggas(probablycause:highweldingcurrent,biggap,andshorttimeofarc-receiving).Suggestion:neednttocutoff,justpurgegasinsideandreweldtheairholepoint.,气孔（这种焊接叫缩孔）Airhole,alsocalledshrinkagecavity,问题3：大多数焊缝存在余高过高、以及焊缝很难看。（原因：组对时有缝隙、焊缝位置难操作）Issue3:excessweldmetalaretoohighformanyweldingseams,andsomeweldingseamslookugly(Reason:therearebiggapswhendoingassembly,ordifficultytoweldforthelimitedspace).建议：这种焊缝确实难看但不影响焊缝强度、焊缝没有氧化等缺陷，可以勉强通过。今后尽可以把位置不好的焊缝在地面先焊接完。Suggestion:thiskindofweldingseamslooknotgoodindeed,butnoteffecttheweldstrength,andthesametime,thereisnooxidationdefect,whichshouldbequalified.Inthefuture,duetolimitedspace,thiskindofweldingseamsshouldbepre-weldedontheground,问题3照片(Issue3:pictures),问题4：对于焊缝内部有裂缝的（原因：在外部焊接时有大风或氩弧焊枪漏气、或当时外部氩气有问题），建议：切除重新焊接。Issue4:Weldingseamhascrack.(Reason:weldinginthewindortorchproblem,orargongasisnotpure).Suggestion:cutoutandre-weld.,裂开Crack,我同大家对大罐CIP有设计IagreewiththedesignfortankCIPline,问题4：CIP管道内部有黄色锈点；Issue4:TherearesomeyellowishrustspotsinsomeofCIPsupplyline;原因分析：需要查找是否不锈钢管和碳钢管有连接处，有可能是管道在组对前被碳钢污染了（或碳钢阀门）。下面照片为大家怀疑的设计原因。ReasonAnalysis:Needtocheckwhethertheresjointpointbetweenstainlesssteelpipeandcarbonsteelpipe,ormaybeitscausedbycarbonmaterial(orcarbonvalves)inthepipeline.Thefollowingpicturesshowsthedoubtfuldesignreason:,我同大家对大罐CIP有设计IagreewiththedesignfortankCIPline,Thefollowingpicturesshowsthedoubtfuldesignreason:,设计为两头细，中间粗;PipesDesignedwithsmallsizeinbothends,butbigsizeinthemiddlepart.是否考虑：下面粗、上面细Possibledesign:biggersizeinthebottompartbutsmallersizeintheabove.,问题4:照片Issue4:Pictures,大罐下管道检查-厚壁管Inspectionforthick-walledpipesundertank,主要问题（厚壁管）：厚壁管检查的焊缝都没有熔合，原因是组对时没有留缝隙、更有可能没有留坡口、没有按焊接工艺焊接组对。建议处理：只要接触食品的就返工。其他的大家可考虑。Mainproblemforthick-walledpipe:theweldingseamsarenotcompletelymerged.Thereasonisthattheresnogapswhendoingassembly,amorelikelyreasonisthereisnobevelededgesanddidnotfinishtheassemblyaccordingtotheweldingprocedure.Suggestion:ifthepoorqualityweldingseamswillcontactbeerorwort,whichshouldberepaired,ifnotimportantpipes,justkeepit.照片没有照下来,大罐下管道（薄壁管):基本焊接良好，个别焊缝接头、收尾有些宽窄不一、略高（原因是：焊工出于好心防止接头和熔合不好延长了焊接时间并加宽），但不影响质量。Inspectionforthin-walledpipes:Basically,alltheweldingseamslookwellandqualified,onlyfewweldingjointslookbadandirregular,whichcausedbyexperienceofwelders,butthequalityisgood.,大罐下管道检查-薄壁管Inspectionforthin-walledpipesundertank,结论：大罐下的不锈钢薄壁管道只要内部清洗干净后就可以投入生产。Conclusion:thin-walledpip