021 LNG储罐保冷施工方案程序0版20080101

中国石油天然气第六建设公司上海项目部ChinaPetroleum6thConstructionCompanyShanghaiProjectOffice上海液化天然气接收站项目SHANGHAILNGTERMINAL&TRUNKLINEPROJECT文件名称：LNG储罐保冷施工程序PROCEDUREOFLNGTANKINSULATION文件编号：CP6CC/SHLNG-CTRU-012中国石油天然气第六建设公司上海项目部ChinaPetroleum6thConstructionCompanyShanghaiProjectOffice002008/1/1报批稿approval张晓静邹利段彤版次Rev.日期date说明issuedfor编制preparedby审核checkedby审批approvedby中国石油天然气第六建设公司上海项目部ChinaPetroleum6thConstructionCompanyShanghaiProjectOfficePage2of17目录TABLEOFCONTENTS1.范围SCOPE………………………………………………………………………………32.概况GENERAL…………………………………………………………………………33.编制依据REFERENCE…………………………………………………………………34.施工方法CONSTRUCTIONMETHOD………………………………………………35.质量控制QUALITYCONTROL………………………………………………………146.安全、健康与环境HSE………………………………………………………………157.资源配备RESOURCES……………………………………………………………….16中国石油天然气第六建设公司上海项目部ChinaPetroleum6thConstructionCompanyShanghaiProjectOfficePage3of171.范围Scope该程序适用于上海LNG项目T0202储罐保冷的施工。ThisproceduredetailsprocedurefortheinsulationconstructionofLNGtankT-0202.2.概况General整个罐的绝热施工主要包括罐底绝热热转角保护板与外罐衬板夹层绝热、环形空间绝热，铝吊顶绝热、接管的绝热四部分。混凝土环干沙的铺设、泡沫玻璃铺设、珍珠岩混凝土块、毛毡以及玻璃棉的安装。主要绝热材料包括：罐底部分：珍珠岩水泥块、泡沫玻璃块、玻璃棉、干沙等；环形空间绝热部分：珍珠岩粉末、弹性毡、玻璃纤维布等；铝吊顶绝热部分：玻璃布、玻璃棉等；接管绝热部分：玻璃棉、玻璃布、聚氰尿酸酯泡沫、聚氨酯泡沫、玻璃纤维毡。Insulationconstructioncoverstheplacesoftankbottom,annularspace,suspendeddeck,nozzle.Ringconcretedrysand,cellularglass，perliteconcreteblock,cappingmaterial,glasswool.Maininsulationmaterial,fortankbottom:perliteconcreteblock,cellularglass,glasswool,drysand;forannularspace:perlitepowder,resilientblanket,fiberglasscloth;forsuspendeddeck:glasscloth,glasswool;fornozzle:glasswool,glasscloth,PIR,PUfoam,fiberglassblanket.3．编制依据Reference3.1BS7777Part2(1993):低温工作条件下的平底，立式，圆筒型储罐。Flat-Bottomed,Vertical,CylindricalStoragetanksforLowTemperatureService.3.2ICW施工程序文件。ICWConstructionProcedure3.3施工图纸。ConstructionDrawingofLNGStorageTankDD-DWG-TS-MA-T0200-D600(1/2~2/2)DD-DWG-TS-MA-T0200-D601(1/2~2/2)DD-DWG-TS-MA-T0200-D602DD-DWG-TS-MA-T0200-D603(1/2~2/2)4.保冷施工InsulationConstruction4.1底部保冷施工tankbottominsulation中国石油天然气第六建设公司上海项目部ChinaPetroleum6thConstructionCompanyShanghaiProjectOfficePage4of174.1.1底部保冷施工顺序constructionsequenceoftankbottominsulation混凝土找平层concreteleveling珍珠岩混凝土块、玻璃棉perliteconcreteblock、glasswool热转角环形边缘板TCPannularplate混凝土环concrtering热转角保护板ThemalCornerPlat三层泡沫玻璃threelayerscellularglass干沙、毛毡drysandandcappingmaterial底部置换管绝热bottompurgepipeinsulation内罐底板innerbottomplate干沙、毛毡drysandandcappingmaterial二层泡沫玻璃twolayerscellularglass毛毡、干沙cappingmaterialanddrysand毛毡、干沙cappingmaterialanddrysand4.1.2施工前提条件constructionpreparation4.1.2.1气吹顶完成；completeroofairraising4.1.2.2确保底部衬板清洁干净；cleanbottomlinerplate4.1.2.3根据LNG储罐绝热材料检验和测试计划DD-QC-TS-00-T020-J004对到货材料进行检查；中国石油天然气第六建设公司上海项目部ChinaPetroleum6thConstructionCompanyShanghaiProjectOfficePage5of17CheckinsulationmaterialsasperinspectionplanofDD-QC-TS-00-T020-J004.4.1.2.4施工按照储罐绝热图纸检验和测试规范DD-QC-TS-00-T020-S002的要求进行；ConductconstructionaspertestspecificationofDD-QC-TS-00-T020-S002.4.1.2.5与土建施工单位协商好混凝土找平的时间,并完成中间交接程序；Contactwithcivilsubcontractorandconfirmconcreteleveling,finishintermediateacceptanceprocedure.4.1.2.6外罐底部衬板和EL105.800墙体衬板安装完成并经过检查验收；CompleteinstallationoftankbottomlinerplateandEL105.800walllinerplate,andacceptedbyrelevantparties.4.1.2.7对现场施工人员进行技术交底，明确安装顺序、铺设要求。Maketechnicalbriefingtoconstructionworkersoninstallationsequenceandrequirement.4.1.3标记marks根据施工图纸在底部衬板上确定底部干沙铺设位置、混凝土环位置、泡沫玻璃位置。Asperconstructiondrawing,toconfirmdrysandlayingplace,ringconcreteplaceandcellularglassplaceontankbottomlinerplate.4.1.4底部保冷主要实物工作量：Quantityoftankbottominsulation混凝土环体积：143m3Ringconcretecube:143m3珍珠岩混凝土块：384块、总计222.4m3Perliteconcreteblock：384pcs、total222.4m3干沙：890m3Drysand：890m3泡沫玻璃t152：2063m3Cellularglasst102：892m3毛毡:31400m3Cappingmaterial:31400m34.1.5施工方法说明constructionmethod4.1.5.1按照施工图纸将施工区域画出；Markconstructionplaceasperconstructiondrawing中国石油天然气第六建设公司上海项目部ChinaPetroleum6thConstructionCompanyShanghaiProjectOfficePage6of174.1.5.2在混凝土找平合格后，铺设混凝土找平层与外罐壁之间以及内罐底板的干沙，干沙要求如下表；Afteracceptanceofconcreteleveling,tolaydrysandontankbottom,spacebetweenPCwallandtankbottom.Drysandrequirementisasbelow:4.1.5.3在干沙上铺设底层毛毡，毛毡应对接铺设，毛毡不准有卷曲、打褶现象；Laylowercappingmaterialondrysand.Cappingmaterialshallconnectwiththetypeofbuttjoint,androllingorflexureisprohibited.4.1.5.4在干沙上铺设三层T152的泡沫玻璃，泡沫玻璃层在长宽方向上交错铺设，最小错变量100mm，每层泡沫玻璃之间铺设毛毡，要求同4.1.5.3；注意铺设最上层干沙下的毛毡时要搭接铺设，以防干沙渗入如图；LaythreelayersofT152cellularglassondrysand.Cellularglassblocklayersshallbearrangedsuchthattheyoverlapbyatleast100mmoflength&widthandconsequently.Betweeneachlayerofcellularglass,itshalllaycappingmaterial,requirementsee4.1.5.3;note:whenlaycappingmaterialbelowtheupperdrysand,itshallbelaidaslapjointtopreventdrysandfrompenetration,seebelow:4.1.5.5安装三层T152的泡沫玻璃过程中，对底部置换管进行保冷，且泡沫玻璃需要切剪并调整；中国石油天然气第六建设公司上海项目部ChinaPetroleum6thConstructionCompanyShanghaiProjectOfficePage7of17InthecourseoflayingtherelayersT152cellularglass,bottompurgepipesshallbeinsulated,andcutandadjustcellularglass.4.1.5.6每层的泡沫玻璃应该是平整的，在任意2米的范围内，平整度都应该在±3mm，不允许出现高差变化大的情况；Ensurelevelingofeachlayerofcellularglass.Inanyareawithdiameterof2m,levelingshallbewithin±3mm,abruptchangeofleve