5万吨离子膜烧碱工程工艺管道施工方案（技术标） 25页

'SelectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesTSelectionParbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbagraphFoLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPoctionParagraphFormatLineSpacingLinesToPoints2SelectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraphFccccccccccccccccccccccccccccccccccccccccccccccccccccccccormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPoctionParagra1．编制说明江苏梅兰化工公司5万吨离子膜烧碱工程工艺管道施工方案，是根据本公司相同/相似工程施工经验编制的。按本公司经验：5万吨离子膜烧碱工程有蒸汽、氮气、氢气、氯气、仪表空气、工业空气、纯水、工业水、废水、98%硫酸、稀硫酸、盐酸、淡盐水、一次盐水、二次盐水、次氯酸钠、亚硫酸钠、碱等多种介质，其输送管道有碳钢无逢管（20#）、不锈钢无逢管（304、316）、钛管、塑料管（CPVC）、玻璃钢增强塑料管（FRP/PVC）、碳钢衬胶管（20#/低钙镁胶、20#/硬橡胶、20#/PTFE）等几种材质。施工时还应根据设计文件对本方案进行补充和完善。2．编制依据2.1《工业金属管道工程施工及验收规范》GB50235——972.2《现场设备、工业管道焊接工程施工及验收规范》GB50236-982.3《石油化工剧毒、易燃、可燃介质管道施工及验收规范》SH3501——19972.4《管道施工图册》HA——604（HH3）2.5中国化学工程十六建公司质量体系文件2.6中国化学工程十六建公司企业标准汇编2.7《青岛化工厂6万吨离子膜烧碱工程工艺管道施工方案》2.8《安徽氯碱化工集团5万吨离子膜烧碱工程工艺管道施工方案》2.9《中银电化2万吨离子膜烧碱工程工艺管道施工方案》2.10《芜湖山江化学2万吨离子膜烧碱工程工艺管道施工方案》25SelectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesTSelectionParbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbagraphFoLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPoctionParagraphFormatLineSpacingLinesToPoints2SelectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraphFccccccccccccccccccccccccccccccccccccccccccccccccccccccccormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPoctionParagra SelectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesTSelectionParbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbagraphFoLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPoctionParagraphFormatLineSpacingLinesToPoints2SelectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraphFccccccccccccccccccccccccccccccccccccccccccccccccccccccccormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPoctionParagra2.11《潍坊亚星化学股份有限公司6万吨离子膜烧碱工程工艺管道施工方案》3．施工部署3.1按照“先地下后地上，先金属管道后金属衬里管道再非金道、先碳钢管后不锈钢管再钛管，先主管后支管、先大管后小管，先管道支撑件后管道组成件”的原则安排施工。3.2现场设置管道预制场，加大管道预制深度，实现“预制工厂化、安装装配化”，以便加快施工进度、缩短工期。4．管道安装主要工序与方法中低压工业管道安装施工，一般内容包括：熟悉管道安装工程的图纸及有关资料、进行管道安装工程的施工测量、绘制单线图、管道煨弯、下料预制、支架制作与安装，主干管道安装、分支管道安装、管道与设备连接、管道冲洗与试压、刷油保温、调整交付使用等。施工工序可分为准备工作、材料水平运输、管材及配件的检查与清理、管材修理、管子切割、坡口加工与组对、管道焊接、管道预热与热处理、试压、吹扫、清洗。4.1准备工作4.1.1熟悉图纸与资料。参加设计交底、图纸会审、检查全部图纸说明是否齐全。并对上述记录形成记录，建设单位、设计单位、施工单位三方签字认可，形成交工资料；了解生产工艺流程，明确安装要求，特别注意管道的位置、走向、标高有无差错及管道的交叉点、连接点及变径处有无差错。25SelectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesTSelectionParbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbagraphFoLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPoctionParagraphFormatLineSpacingLinesToPoints2SelectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraphFccccccccccccccccccccccccccccccccccccccccccccccccccccccccormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPoctionParagra SelectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesTSelectionParbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbagraphFoLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPoctionParagraphFormatLineSpacingLinesToPoints2SelectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraphFccccccccccccccccccccccccccccccccccccccccccccccccccccccccormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPoctionParagra4.1.2编制施工方案，针对工程特点和设计要求编制专业方案，在确保施工质量和施工期限前提下，根据施工方法、组织施工人员和施工机具，施工机具要根据安装工程特点和施工现场情况确定。4.1.2.1劳动力安排工种队长技术员质检员安全员材料员管工电工钳工电焊气焊工起重工人数13112184416664.1.2.2主要施工机具序号名称规格单位数量备注1汽车吊8T台12平板车5T台13卷扬机2T台14交直流电焊机BX300---500台125氩弧焊机NSA4-30台66等离子切割机LGK-100B台27砂轮切割机Ф400台188角向磨光机Ф100台425SelectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesTSelectionParbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbagraphFoLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPoctionParagraphFormatLineSpacingLinesToPoints2SelectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraphFccccccccccccccccccccccccccccccccccccccccccccccccccccccccormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPoctionParagra SelectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesTSelectionParbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbagraphFoLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPoctionParagraphFormatLineSpacingLinesToPoints2SelectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraphFccccccccccccccccccccccccccccccccccccccccccccccccccccccccormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPoctionParagra9塑料焊枪500W台110焊条烘箱个111焊条保温箱个1212气焊工具套613水平尺300——500mm把1014游标卡尺0.1把115角尺300——500mm把1016手锤1.5P把1017手动葫芦1t，2t，3t个1018钢卷尺5m把2019盘尺50m把120锯床台121管子坡口机台14.1.3管材及配件验收对于使用的管材、管件、阀门、法兰，按设计和施工规范要求的项目进行检查，清点验收并做好记录，对提供的合格证进行校验。4.1.4作好施工的培训、考核工作，以便使其掌握技术操作要领，保证工程质量、工程进度。电焊工、氩弧焊工必须持证上岗，经过培训并达到焊接质量要求，玻璃钢粘接人员在有关单位的指导下尽快熟悉操作要领，直到达到粘接要求。25SelectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesTSelectionParbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbagraphFoLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPoctionParagraphFormatLineSpacingLinesToPoints2SelectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraphFccccccccccccccccccccccccccccccccccccccccccccccccccccccccormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPoctionParagra SelectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesTSelectionParbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbagraphFoLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPoctionParagraphFormatLineSpacingLinesToPoints2SelectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraphFccccccccccccccccccccccccccccccccccccccccccccccccccccccccormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPoctionParagra4.1.5材料及施工机具的准备，工程所需主材及消耗材料的储备要求，能满足连续施工的需要，按照施工方案准备所需的施工机具，以满足施工需要。4.2材料运输材料运输是指现场内水平运输和垂直运输，水平包括从工地仓库至预制场所或安装现场，垂直运输包括高空和地下作业运输。水平运输一般采用人工运输和机械运输两种，主要根据材料的体积、重量来决定。一般钢管水平运输；直径小于150mm时采用人工手推车运输，直径大于150mm时采用汽车运输，并配有汽车吊装卸，垂直运输钢管时，直径小于100mm时人工运输，大于100mm时采用卷扬机、导链或吊车运输。4.3管材及配件检查与清理4.3.1管子、管件、阀门及法兰必须具有制造厂的质量证明书，其标准应符合国家标准和本工程设备设计的要求。4.3.2数量验收，对管子进行长度测量，对管件、阀门及法兰进行清点，确保数量满足施工要求。4.3.3质量验收4.3.3.1管子、管件、阀门及法兰在使用前应按设计要求核对其村质、规格、型号，检查其几何尺寸，用游标卡尺或千分尺在管端测量外径和壁厚，钢管外径的测量在距离基端500mm处进行；用盘尺测量其长度。4.3.325SelectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesTSelectionParbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbagraphFoLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPoctionParagraphFormatLineSpacingLinesToPoints2SelectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraphFccccccccccccccccccccccccccccccccccccccccccccccccccccccccormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPoctionParagra SelectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesTSelectionParbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbagraphFoLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPoctionParagraphFormatLineSpacingLinesToPoints2SelectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraphFccccccccccccccccccccccccccccccccccccccccccccccccccccccccormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPoctionParagra.2管子、管件、阀门及法兰使用前，要求其表面无裂缝、划痕、重皮等缺陷，锈蚀、凹陷不超过管壁厚度负偏差的规定，精度及光洁度应达到设计或制造标准。法兰和阀门连接的密封应完好。4.3.3.3阀门在安装前应按规定进行强度和严密性试验。4.3.4管子在正式加工前，必须进行清扫，以清除管子内外表的污垢。4.4管材修整管材在储存、运输过程中，受到不同程度的碰撞和摔压，产生超出允许范围的变形，须对其进行调直，管段调直可采用人工调直和机械调直。当管道直径较小时，可采用人工丝杆调直器冷调，直径为100mm以上的管材采用机械调直。常用的螺丝杆式压力机可以调直管径325mm以下的，壁厚小于10mm的管段，每压一次可调直3°—5°，对管端呈椭圆的管材，当管径较大时，可采用液压、千斤顶进行调整。4.5管子切割管道预制与安装时，将管子按所需长度切断，常用的方法的两种，机械切割或等离子、氧乙炔焰切割法。4.5.1氧乙炔手动切割焊接接头的扇形管段及在管壁上开孔，切割时可带焊接坡口，也可不带坡口。4.5.2直径小于50mm的碳钢管，一般采用机械法切割。4.5.3不锈钢管应用机械切割，不锈钢管用砂轮切割或修磨时，应使用专用砂轮片，严禁与碳钢管混合使用。4.5.4管子切口质量应符合以下要求25SelectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesTSelectionParbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbagraphFoLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPoctionParagraphFormatLineSpacingLinesToPoints2SelectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraphFccccccccccccccccccccccccccccccccccccccccccccccccccccccccormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPoctionParagra SelectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesTSelectionParbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbagraphFoLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPoctionParagraphFormatLineSpacingLinesToPoints2SelectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraphFccccccccccccccccccccccccccccccccccccccccccccccccccccccccormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPoctionParagra4.5.4.1切口表面平整清洁，不得有裂纹、重皮、毛刺、凸凹、熔口、熔渣、氧化铁、铁屑等污物。4.5.4.2切口平面倾斜偏差为管子直径的1%，但不能超过3mm，材质不同的管道切断后应及时标上原有材质标记。4.6坡口加工与接头组对4.6.1坡口加工型式、尺寸及组对的选用，应考虑易保证焊接质量，便于操作及减少焊接变形等原则。4.6.2管道焊接I型坡口适用于管壁厚度1.5—3.5mm的管口焊接，其管口用锉刀或砂轮机磨角。V型坡口适用于管壁厚度4—26mm的管口焊接，坡口角度为60°—70°，根部钝边厚度为1—3mm。4.6.3本工程的氯气管道属于输送剧毒流体的管道，氢气管道属于输送可燃介质管道，以上两类的管道焊缝质量不得低于II级，管道焊缝射线照相比例根据设计要求和标准确定。4.6.4管道I、II级焊缝的坡口及不锈钢管道的坡口加工，应采用机械方法，若采用等离子切割机切割时，应除净其加工热影响区表面氧化层，其他焊缝的坡口加工也可采用氧—乙炔焰方法，但必须除净其表面的氧化层，并将影响焊缝质量的凸凹不平处磨削平整。4.6.5壁厚相同的管子、管件对口时，I、II级焊缝其内壁错边量不应超过壁厚的10%，且不应大于1mm，其他焊缝其内壁错边不应超过壁厚的20%，且不应大于2mm。4.6.625SelectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesTSelectionParbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbagraphFoLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPoctionParagraphFormatLineSpacingLinesToPoints2SelectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraphFccccccccccccccccccccccccccccccccccccccccccccccccccccccccormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPoctionParagra SelectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesTSelectionParbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbagraphFoLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPoctionParagraphFormatLineSpacingLinesToPoints2SelectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraphFccccccccccccccccccccccccccccccccccccccccccccccccccccccccormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPoctionParagra管子、管件组对时，对坡口及其内外侧进行清理，清理合格后应及时组对施焊，对碳钢管、不锈钢管应清理油漆、锈刺等污物，清除范围大于10mm。4.6.7焊前手工清理坡口毛刺，管件坡口用砂布打光，不锈钢管焊缝两侧分别涂刷100mm长度白垩粉，并用丙酮清洗油污，除去坡口内的油污、氧化膜。4.7管道焊接4.7.1焊接材料必须具有制造厂的质量证明书且符合设计规定，在使用前按出厂说明书的要求进行烘干，并在使用中保持干燥，焊条药皮应无脱落和明显裂纹，焊丝在使用前必须进行清理，可用有机溶剂进行脱脂处理，并用机械方法或化学方法除去氧化膜，焊接施工人员必须持相应证件上岗操作。4.7.2碳钢管直径小于（等于）50mm时，采用氩弧焊，焊丝选用H08A；直径大于50mm采用氩电联焊，焊条为E4303（J422）。不锈钢管焊接方法：DN≤50mm的管子采用全TIG焊，DN>50mm的管子采用TIG打底、SMAW填充盖面的焊接方法。TIG焊接方法选用牌号为HOOCr19Ni12Mo2，规格为直径2.0mm的不锈钢焊丝；SMAW焊接选用A022、直径2.5mm不锈钢焊条。4.7.3TIG焊接和SMAW焊接均采用直流电源，其中TIG采用正接法，SAMW采用反接法。TIG焊接规范参数如下：焊接电流60—85A，焊接电压12—14V，焊炬喷嘴口径8mm，钨棒直径2.5mm，氩气流量8—10L/min；SMAW焊接参数如下：25SelectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesTSelectionParbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbagraphFoLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPoctionParagraphFormatLineSpacingLinesToPoints2SelectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraphFccccccccccccccccccccccccccccccccccccccccccccccccccccccccormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPoctionParagra SelectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesTSelectionParbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbagraphFoLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPoctionParagraphFormatLineSpacingLinesToPoints2SelectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraphFccccccccccccccccccccccccccccccccccccccccccccccccccccccccormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPoctionParagra焊接电流55—70A，焊接电压22—24V；TIG打底焊时，管子内必须进行冲氩保护，防止焊丝根部氧化；焊接时，应注意不得在母材上引弧，只允许在坡口内或在引弧板上引弧。焊接地线应跟母材接触牢靠；各层焊接接头应错开，层间温度应控制在150度以下，禁止用铁锤敲打焊缝和母材。4.7.4管道焊接检验4.7.4.1管道焊后必须对焊缝进行外观检查，检查时应将妨碍检查的渣皮飞溅物清理干净，必要时也可采用酸洗，然后用肉眼或放大镜观察，为了把缺陷消灭在焊接过程中，在进行多层接接时，从点固焊（点固焊同正式焊）开始，以后每进行一次都要进行外观检查，外观检查时应将焊缝尺寸不规则、咬边、焊瘤、弧坑和电弧擦伤等缺陷消灭在焊接过程中。4.7.4.2对氯气氢气管道的焊接必须进行100%的射线照相检查，不合格的焊缝必须进行返修，同一焊缝允许返修次数为：碳钢管不超过3次，不锈钢管不超过2次。5．管道安装5.1一般规定5.1.1与管道有关的土建工程已检验合格，满足要求并办理了中间交接手续，与管道有关的机械设备已检验合格；管子、管件、阀门等内部清理干净，无杂物，法兰、焊缝及其它连接件的设置应便于检修，并不得紧贴墙壁、楼板或管架；管道穿越道路、墙壁或构筑物时应加套管或砌筑涵洞保护。25SelectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesTSelectionParbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbagraphFoLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPoctionParagraphFormatLineSpacingLinesToPoints2SelectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraphFccccccccccccccccccccccccccccccccccccccccccccccccccccccccormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPoctionParagra SelectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesTSelectionParbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbagraphFoLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPoctionParagraphFormatLineSpacingLinesToPoints2SelectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraphFccccccccccccccccccccccccccccccccccccccccccccccccccccccccormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPoctionParagra5.1.2管道预制应按单线图规定的数量、规格、材质选配管道组成件，并应按单线图标明管道系统位号和按预制顺序标明各组成件的顺序号。5.1.3自由管段和封闭管段的选择应合理，封闭管段应按现场实测后的安装长度加工，自由管段和封闭管段的加工尺寸允许偏差如下表：项目允许偏差自由管段封闭管段长度±10±1.5法兰面与管子中心垂直度DN<1000.50.5100≤DN<3001.01.0DN≧3002.02.0法兰螺栓孔对称水平度±1.6±1.65.1.4管子对口时,应在距接口中心200mm处测量平直度,当管子直径小于100mm时,允许偏差为1mm,当管子直径大于或等于100mm时,允许偏差为2mm,但全长允许偏差均为10mm.5.1.5管道连接时,不得用强力对口,加偏垫或加多层垫等方法来消除接口端的空隙、偏斜、错口或不同的缺陷。5.1.6管道上仪表取源部件的开孔和焊接应在管道安装前进行。5.1.7当管道安装工作有间断时，应及时封闭敞开的管口。5.1.8管道安装的允许偏差见下表:25SelectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesTSelectionParbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbagraphFoLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPoctionParagraphFormatLineSpacingLinesToPoints2SelectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraphFccccccccccccccccccccccccccccccccccccccccccccccccccccccccormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPoctionParagra SelectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesTSelectionParbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbagraphFoLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPoctionParagraphFormatLineSpacingLinesToPoints2SelectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraphFccccccccccccccccccccccccccccccccccccccccccccccccccccccccormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPoctionParagra项目允许偏差mm坐标架空及地沟室内25室内15埋地60标高架空及地沟室内±20室外±15埋地±25水平管道平直度DN≤100mm2L‰Max50DN>100mm3L‰Max80立管铅垂度5L‰Max30成排管道间距15交叉管的外壁或绝热层间距20注：L——管道有效长度；DN——管道直径5.1.9管道与机器连接前，应在自由状态下检验法兰的平行度和同轴度，平行度不应大于0.15mm，同轴度不大于0.5mm。5.1.10氯气、氢气管道的坡度按设计要求为1/400。5.2不锈钢管安装5.2.125SelectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesTSelectionParbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbagraphFoLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPoctionParagraphFormatLineSpacingLinesToPoints2SelectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraphFccccccccccccccccccccccccccccccccccccccccccccccccccccccccormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPoctionParagra SelectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesTSelectionParbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbagraphFoLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPoctionParagraphFormatLineSpacingLinesToPoints2SelectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraphFccccccccccccccccccccccccccccccccccccccccccccccccccccccccormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPoctionParagra不锈钢管道及管件应有制造厂的合格证明书、化学成分和机械性能等资料，外观不得有裂纹、起皮、机械损伤等现象，对表面机械损伤应进行修复，使其保持光滑，同时要进行酸洗及钝化处理，不锈钢管道的运输与存放应避免与碳钢管材料相互碰撞、摩擦、挤压，同时应注意防止雨水、铁质等的腐蚀。5.2.2不锈钢管用等离子切割时要注意切割速度不能态快，采用砂轮切割机切割时应使用不锈钢专用砂轮片，切割后的不锈钢管应按材质进行标识。5.2.3不锈钢管坡口宜采用机械等离子切割机，砂轮机等进行加工，用等离子切割机加工时坡口必须打磨掉表面的热影响层，并保持坡口平整。5.2.4为确保不锈钢管内壁焊接成型、平整光滑，薄壁管采用全钨极氩弧焊，壁厚大于3mm时应采用氩电联焊，焊接前应将坡口两侧20mm范围内的毛刺、污物、油污杂质清除干净，还应在距焊口4—5mm以外，焊口两侧40—50mm的长度区间内，用非金属片遮住或涂白垩粉，防止焊接时的飞溅物飞溅到管壁上。焊接后应对焊缝及附近表面进行酸洗及钝化处理，酸洗及钝化处理用酸膏酸洗法将酸膏涂敷于焊缝及近缝区内，停留几分钟后清水冲洗干净。5.2.5不锈钢法兰应使用不锈钢螺栓，不锈钢法兰使用的非金属垫片，其氧离子含量不得超过50ppm，不锈钢管道与支架之间应垫入不锈钢板或氯离子含量不超过50ppm的非金属垫片。5.2.6不锈钢管道安装时，不得用碳钢工具与材料敲击与挤压。5.3钛管安装5.3.125SelectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesTSelectionParbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbagraphFoLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPoctionParagraphFormatLineSpacingLinesToPoints2SelectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraphFccccccccccccccccccccccccccccccccccccccccccccccccccccccccormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPoctionParagra SelectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesTSelectionParbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbagraphFoLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPoctionParagraphFormatLineSpacingLinesToPoints2SelectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraphFccccccccccccccccccccccccccccccccccccccccccccccccccccccccormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPoctionParagra工业纯钛钛管及管件安装前必须进行检查，应具有制造厂合格证和质量证明书（包括牌号、炉号、规格、化学成分和机械性能等），内外表面应光滑、清洁、无针孔、裂缝、划痕、折叠和过腐蚀等缺陷，管材内外表面的局部缺陷应予以清除，清除后外径或壁厚不得超出规定的偏差值；其端部应平整无毛刺、壁厚应符合要求；钛管运输与存放应注意不与铁质材料接触、碰撞，防止氢、氧、氮、碳等污染。5.3.2钛管切割应采用手工锯（非金属材质）的方法，切割速度应以低速为宜。不宜使用砂轮机切割，不得使用火焰切割，坡口宜使用机械方法加工，坡口平面最大垂直偏差为管子直径的1%，且不得超过3毫米，切口或坡口表面应平整，不得有裂纹、垂皮，并应清除毛刺、凸凹、缩口、熔渣及氧化物等。5.3.3钛管对口时应检查直线度，在距离接口中心200毫米处测量，其允许偏差为1mm/米，但全长偏差不得超过10毫米，直管段两环之间间距不应大于100毫米，且不小于管径。管段编号、焊口代号及检验标记可用油漆或记号等标记，不得在管段上打钢印。5.3.4经机械清理后的表面，焊接前应使用不含硫的丙酮或乙醇进行脱脂处理，用棉纱沾丙酮或乙醇擦洗，戴棉纱手套，不得戴橡皮手套，严禁使用三氯乙烯、四氯化碳等氯化物溶剂，不得将棉质纤维附于坡口表面。5.3.5钛管及管件采用氩弧焊，焊丝的化学成分与力学性能应与母材相当。焊丝应有出厂合格证和质量证明书，其表面应洁净，无氧化色，不得有裂纹、起皮、疤痕和夹渣等缺陷。5.3.625SelectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesTSelectionParbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbagraphFoLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPoctionParagraphFormatLineSpacingLinesToPoints2SelectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraphFccccccccccccccccccccccccccccccccccccccccccccccccccccccccormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPoctionParagra SelectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesTSelectionParbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbagraphFoLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPoctionParagraphFormatLineSpacingLinesToPoints2SelectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraphFccccccccccccccccccccccccccccccccccccccccccccccccccccccccormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPoctionParagra焊接设备应采用使用性能稳定的直流氩弧焊机，正接法，且应附近高频引弧和电流变减装置及满足工艺要求的其他设施。充氩保护焊接时应事先制作好焊炬的氩气拖罩。管子环缝采用弧型拖罩，宽40——60毫米，高60——70毫米，长120——140毫米。5.3.7管内充氩时，一般将管段一端封闭，从另一端将氩气充入管内；若焊口一侧管段已经焊接完毕，或该侧管段过长及该侧管段连接弯曲过多，不宜从该端封闭的，可将该侧焊口管段内贴水溶纸进行封闭。待管内空气被排出，管内基本是氩气时，调整好向管内充氩气的氩气流量后，方可施焊。5.3.8氩气纯度应严格控制在不低于99.99%，相对湿度不应大于5%，水分不超过0.001毫克/升，含氮量应少于0.005%，含氧量少于0.002%，含氢量在0.002%以下。5.3.9焊接接头的充氩保护效果，一般可通过观察表面的颜色判断，若焊缝及附近区域金属表面呈银白色金属光泽，可认为保护良好。5.3.10钛管安装时，不得用铁质的工具及材料敲击和挤压，在碳钢管支吊架和钛管之间应垫入橡胶板或软塑料板，使其不与钛管直接接触，使用的非金属垫片一般为橡胶板或软塑料板并应控制氯离子含量。5.3.11定位焊应采用与正式焊接相同的焊接材料及焊接工艺，且应由合格焊工施焊，焊缝长度宜为10——15毫米，高度不应超过壁厚的2/3，焊点数应根据管径和壁厚确定，本工程的钛管焊点数可定为3个。定位焊缝不得有裂纹、气孔、夹渣及氧化变色等缺陷，当发现缺陷时，应及时消除。5.3.1225SelectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesTSelectionParbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbagraphFoLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPoctionParagraphFormatLineSpacingLinesToPoints2SelectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraphFccccccccccccccccccccccccccccccccccccccccccccccccccccccccormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPoctionParagra SelectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesTSelectionParbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbagraphFoLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPoctionParagraphFormatLineSpacingLinesToPoints2SelectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraphFccccccccccccccccccccccccccccccccccccccccccccccccccccccccormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPoctionParagra钨板直径应根据所使用的焊接电流大小进行选择，其端部应修理磨成圆锥型，焊接位置宜采用水平转动平焊。5.3.13在保证溶透或成型良好的条件下，应选用小线能量焊接，层间温度应低于200℃，焊接工艺参数见下表：壁厚mm焊层钨极直径mm焊丝直径mm喷嘴直径mm层间温度（℃）焊接热量输入氩气流量（L/min）焊接电流（A）电弧电压（V）焊接速度（cm/min）喷嘴保护罩背面2.522216~20≤20080~11012~147.58~1216~256~105.3.14焊接时应采用高频引弧，焊炬应提前送气熄弧时应采用电流衰减装置和气体延时保护装置。弧坑必须填满且避免大气污染。5.3.15焊接过程中焊丝的加热端应处在氩气的保护之中，熄弧后焊丝不应立即暴露在大气中，应在焊缝脱离保护时同时取出。5.3.16焊接过程中电弧应保持稳定，防止钨极与焊件或焊丝接触造成夹钨，当出现夹钨时，应消除缺陷后继续施焊。5.4衬里管道安装5.4.1本工程无缝碳钢管衬里材料有低钙镁胶、硬橡胶、聚四氟乙烯，全部衬里管道由建设单位根据设计的管道单线图采购供货。25SelectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesTSelectionParbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbagraphFoLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPoctionParagraphFormatLineSpacingLinesToPoints2SelectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraphFccccccccccccccccccccccccccccccccccccccccccccccccccccccccormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPoctionParagra SelectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesTSelectionParbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbagraphFoLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPoctionParagraphFormatLineSpacingLinesToPoints2SelectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraphFccccccccccccccccccccccccccccccccccccccccccccccccccccccccormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPoctionParagra5.4.2搬运和堆放衬里管及管件时，应做到轻拿轻放，防止剧烈振动或相互碰撞。衬里管道及管件应存放在温度5—40℃的室内，避免阳光和热源辐射。不得与潮湿物件和油污等接触。5.4.3衬里管在安装前，应检查衬里胶完好情况并保持管内清洁，检查方法是用目测来检查保护层的完整情况，并抽查电磁试验情况。5.4.4衬里管道安装前应按管道图检查法兰管段、法兰管件、法兰阀门长度的编号及是否与设计图纸相等，不相等需重新预制。相等则安装到设计规定的位置上去。5.4.5衬里管道安装前应采用软质或半硬质垫片，安装时垫片应放正，当需要调整安装长度时，宜采用更换同材质垫片的方法，垫片的厚度不宜超过设计厚度的20%，必要时可用斜垫片调整连接口。5.4.6衬里安装时不得进行施焊、局部加热、扭曲或敲打。5.4.7与设计图纸不相符的衬里管道需要重新预制，仍全部采用法兰连接，预制的衬里管道需编号，便于安装。5.4.7.1法兰内需预留衬里和垫片厚度，采用平焊的法兰的焊缝应磨削成半径大于或等于5mm的圆弧。5.4.7.2衬里管道预装时，不允许强制对口，必须保证尺寸正确、装配合理并能保证满足衬里施工要求。5.5玻璃钢管/聚氯乙烯（氯化聚氯乙烯）管道安装5.5.125SelectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesTSelectionParbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbagraphFoLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPoctionParagraphFormatLineSpacingLinesToPoints2SelectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraphFccccccccccccccccccccccccccccccccccccccccccccccccccccccccormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPoctionParagra SelectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesTSelectionParbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbagraphFoLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPoctionParagraphFormatLineSpacingLinesToPoints2SelectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraphFccccccccccccccccccccccccccccccccccccccccccccccccccccccccormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPoctionParagra管材检查与保管：管材表面应光滑、平整、不应有明显的分流痕，不允许有气泡、裂口及显著的波纹、凹陷、杂质、颜色不均、分解变色等，塑料管应避免在粗糙场地上拖拉或猛烈的投掷、堆放时要放平，注意防火，防止过热，防止有毒化学品的浸蚀、日晒雨淋及冰冻，不应与金属管道材混放。5.5.2塑料管安装的水平偏差每米应小于2—3mm，垂直偏差每米应小于2—5mm，管线应沿连续托架托平，防止硬物与管道直接接触，管子周围应采用经过选择的弹性材料平填充。5.5.3塑料管支架间距应当适当，以免造成不必的应力和下垂，管道吊装不能装得过紧，支架与管子接触处不得有粗糙锋利的边缘，并垫以软塑料胶板等。5.5.4塑料管切断采用粗齿锯条的手工锯或木工锯，管段坡口可用木工锉加工或机械方法加工。5.5.5塑料管粘接5.5.5.1用角向磨光机在插头部位及承头端位打毛，用角向磨光机和2号、3号砂轮片在承口内打磨，要求均匀，使PVC外表呈灰色，清除粉尘。5.5.5.2塑料管粘接采用承插口形式，承口不得有裂纹、歪斜及厚度不均匀现象，管道承插插头必须插足，承接口有油污时应用丙酮溶液擦洗干净后才能粘接。5.5.5.3聚氯乙烯聚管道采用过氯乙烯清漆或聚氯乙稀胶作为粘接剂，粘接时其间隙不得大于0.15—0.3mm，在承插口及插头部分快速均匀的涂刷界面粘接剂，如间隙过大，可均匀涂刷几遍粘接剂来调整或在胶粘剂内加入少量PVC粉做填料，以增加粘接剂的稠度。5.5.525SelectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesTSelectionParbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbagraphFoLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPoctionParagraphFormatLineSpacingLinesToPoints2SelectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraphFccccccccccccccccccccccccccccccccccccccccccccccccccccccccormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPoctionParagra SelectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesTSelectionParbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbagraphFoLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPoctionParagraphFormatLineSpacingLinesToPoints2SelectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraphFccccccccccccccccccccccccccccccccccccccccccccccccccccccccormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPoctionParagra.4将插口迅速插入承插口，用导链收紧，完全插入后迅速将承口外露处的粘接剂擦去，待承口的粘接剂凝固后，用直径1.5mm的单焊丝封口，再用直径2.5mm的双焊丝焊接铺平、圆滑过渡。要求焊丝排列整齐，充分熔透、无虚焊、假焊、烧焦、吹毛等现象。5.5.5.5塑料管焊接应采用承插口焊接，一般不得采用直接对口焊接的连接方式，焊接一般采用热风焊。5.5.5.5.1管径小于200mm的管子一般采用承插连接，将加工成外坡口的管子涂以粘接剂插入已加热的管子中，插入深度应大于管径15—30mm，为保证接头严密，可将内坡口的管端焊接或粘接在管子上。5.5.5.5.2管径大于200mm的管子可采用直接对焊。对焊前打磨坡口，管子对接端面必须打磨成与管子轴线成90°，切口平整，然后每头塑料管打成45°，坡口钝边厚度1mm。将两管保持同心对紧，然后焊上直径1.5mm的单焊丝一圈，再用直径2.5mm的双焊填满。5.5.5.5.3焊接工艺5.5.5.5.3.1焊接温度一般距焊枪喷嘴5mm处温度经过15秒测得的温度，硬聚氯乙烯管焊接温度控制在200—250°，焊接速度为9—15m/小时。5.5.5.5.3.2焊条延伸率即焊条经焊接后延长的比例，硬聚氯乙烯焊条应控制在15%以内。5.5.5.5.3.3焊条施力方向应与焊接的焊缝成90°，最大不得超过100°，以免焊条延伸过长。5.5.5.5.3.4焊枪喷嘴和焊件之间的夹角，应以使焊件和焊条均匀加热为原则，一般为30—40°。25SelectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesTSelectionParbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbagraphFoLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPoctionParagraphFormatLineSpacingLinesToPoints2SelectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraphFccccccccccccccccccccccccccccccccccccccccccccccccccccccccormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPoctionParagra SelectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesTSelectionParbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbagraphFoLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPoctionParagraphFormatLineSpacingLinesToPoints2SelectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraphFccccccccccccccccccccccccccccccccccccccccccccccccccccccccormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPoctionParagra5.5.5.3.5焊枪喷嘴应不断的上下左右摆动，但摆动角度不宜过大，5.5.5.5.3.6焊缝中每根焊条接头处，必须错开，以保证焊缝强度。5.5.5.5.3.7焊缝表面应饱满、平整，不能有波纹及凹痕现象和烧焦分解现象，发现后应立即清除并补焊。5.5.5.5.3.8焊件和焊条上有赃物、油物时应用丙酮或苯类溶剂擦洗干净，焊后应使焊缝自然冷却，以免焊缝裂开。5.5.6玻璃钢增强层施工，玻璃钢增强层主要起增强作用，使衬里层粘成一个整体，每一层玻璃钢缠绕物必须保证被树脂所浸润，并有足够的树脂含量。5.5.6.1按照工艺要求采用手工粘接方法，表面毡一层，短切毡两层盖满整个底面，作为内衬层，然后逐层糊玻璃布、短切毡等增强材料至要求厚度，上布时应适当用力，使布层裹紧，糊制宽度和厚度由生产厂家根据外在和内压条件确定。5.5.6.2树脂配方及固化5.5.6.2.1树脂的配方由生产厂家提供，在配制前，安装者应进行凝胶试验，确定树脂与催化剂的配比，凝胶时间以25—45分钟为宜。5.5.6.2.2一次制作厚度在15mm以内最好，设计厚度较大时，应分层糊制，以防止产品烧白，糊制完后，最好能使管体转动，否则应注意观察，在糊制处流胶时应补胶，以防止出现流空现象。用装有软片砂轮的角向磨光机轻轻打磨增强部位的表面，使其平整，清除后涂刷一层保护树脂。5.6阀门安装25SelectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesTSelectionParbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbagraphFoLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPoctionParagraphFormatLineSpacingLinesToPoints2SelectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraphFccccccccccccccccccccccccccccccccccccccccccccccccccccccccormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPoctionParagra SelectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesTSelectionParbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbagraphFoLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPoctionParagraphFormatLineSpacingLinesToPoints2SelectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraphFccccccccccccccccccccccccccccccccccccccccccccccccccccccccormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPoctionParagra5.6.1阀门检验5.6.1.1全部阀门应作外观检查，检查项目如下：5.6.1.1.1阀门型号、规格、编号、压力等级、材质号等，应符合设计和供货产品的技术文件。5.6.1.1.2外部和可见的内部表面的螺纹、密封面应无损伤、锈蚀现象。5.6.1.1.3安全阀门的铅封应良好。5.6.1.2根据图纸检查部位和尺寸，包括；外部高度、口径法兰的间距、厚度及螺栓配置，壳体的壁厚和加工精度粗糙度等应符合图纸要求。5.6.1.3阀门的装配质量还应符合下列要求：5.6.1.3.1阀杆应转动灵活5.6.1.3.2闸阀全开、全闭时闸板的位置正确。5.6.1.3.3止回阀阀瓣应灵活牢固、销钉结构完好。5.6.1.3.4安全阀的弹簧与波纹管应完整。5.6.1.3.5衬里阀门的衬里层应完好，衬胶阀的衬胶质量用电火花探查仪检查其致密性，应符合规范和制造厂的规定。5.6.1.3.6低压阀门应从每批（同制造厂、同规格、同型号、同时或同批到货）中抽检10%（至少一个）进行强度和严密性检验，若有不合格再抽查20%，如仍有不合格则逐个检查。5.6.1.3.7氯气、氢气管道的阀门应逐个进行强度和严密性检查。5.6.125SelectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesTSelectionParbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbagraphFoLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPoctionParagraphFormatLineSpacingLinesToPoints2SelectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraphFccccccccccccccccccccccccccccccccccccccccccccccccccccccccormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPoctionParagra SelectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesTSelectionParbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbagraphFoLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPoctionParagraphFormatLineSpacingLinesToPoints2SelectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraphFccccccccccccccccccccccccccccccccccccccccccccccccccccccccormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPoctionParagra.3.8阀门强度和严密性试验应用清水进行，不锈钢阀门用水的氯离子含量不得超过25ppm。5.6.1.3.9阀门的壳体强度试验压力不得小于公称压力的1.5倍，试验时间不得少于5分钟，以壳体填料无渗漏为合格，密封试验宜以公称压力进行，在能够确定工作压力时，也可用1.25倍工作压力进行试验，以阀瓣密封面无渗漏为合格。5.6.1.3.10试验合格的阀门，应及时排净内部积水并吹干，密封面涂上防锈油，关闭出入口，做出明显的标记，填写阀门试验记录。5.6.1.3.11阀门的传动装置和操作机构应进行清洗检查，要求动作灵活可先靠。5.6.1.3.12安全阀门安装前应按设计文件规定开启压力进行调试，当设计无规定时其开启压力为工作压力的1.05—1.15倍，回座压力应大于工作压力的0.9倍，每个安全阀门启闭试验不应少于3次，调试后进行铅封并填写“安全阀门调整试验记录”，调试介质、工作介质为液体时，用水调试；工作介质为气体时，用空气或惰性气体调试。5.6.2阀门安装的一般规定5.6.2.1阀门安装的高度应方便操作和检修，止回阀安装应符合设计规定。5.6.2.2阀门与管道或法兰连接时，阀门应在关闭状态下安装。5.6.2.3安全阀安装，应符合下列规定：5.6.2.3.1安全阀应垂直安装5.6.2.3.2在管道投入试运行时，应及时调校安全阀。5.6.225SelectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesTSelectionParbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbagraphFoLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPoctionParagraphFormatLineSpacingLinesToPoints2SelectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraphFccccccccccccccccccccccccccccccccccccccccccccccccccccccccormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPoctionParagra SelectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesTSelectionParbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbagraphFoLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPoctionParagraphFormatLineSpacingLinesToPoints2SelectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraphFccccccccccccccccccccccccccccccccccccccccccccccccccccccccormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPoctionParagra.3.3安全阀的最终调校应在系统上进行，开启和回座压力应符合设计规定。5.6.2.3.4安全阀经过调校后，在工作压力下不得有泄漏。5.6.2.4安全阀应垂直安装，其阀组应安装在地坪、操作台和走道两旁，便于调整、操作、检查。5.7法兰安装5.6.1法兰检查5.7.1.1法兰密封面应平整光洁，不得有毛刺及径向沟槽5.7.1.2螺栓及螺母应完整、无伤痕、毛刺等缺陷，螺栓与螺母配合良好，无松动或卡滞现象。5.7.1.3非金属垫片应质地柔软，无老化变质或分层现象，不应有折损和皱折等缺陷。5.7.2法兰安装的一般规定5.7.2.1法兰面应与管子中心线垂直，直径小于300mm时允许偏差为1mm，直径大于300毫米时允许偏差为2mm。5.7.2.2管子插入法兰内距密封面应留有一定距离，一般为法兰厚度的一半，最多不超过法兰厚度的三分之二。5.7.2.3法兰连接时应保持相互平行，其允许偏差为法兰外径的1.5%，且不大于2mm，不得用强紧螺栓的方法消除偏斜。5.7.2.4法兰应保持同一轴线，其螺孔中心偏差一般不超过孔径的5%，并保证螺栓自由穿入。5.7.225SelectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesTSelectionParbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbagraphFoLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPoctionParagraphFormatLineSpacingLinesToPoints2SelectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraphFccccccccccccccccccccccccccccccccccccccccccccccccccccccccormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPoctionParagra SelectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesTSelectionParbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbagraphFoLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPoctionParagraphFormatLineSpacingLinesToPoints2SelectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraphFccccccccccccccccccccccccccccccccccccccccccccccccccccccccormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPoctionParagra.5使用的螺栓规格应统一，方向一致，螺栓紧固应均匀对称，松紧适度，紧固后外露长度不大于2倍螺距，紧固后螺栓应与法兰紧贴，不得有缝隙，除设计规定调协垫圈外，不得另加垫圈。紧固螺栓应在对角线上紧固并划分次序，循序渐进。管径与螺栓的紧固转矩如下表管径（mm）15-2025-100125-200≧250转矩（kg/cm）100-150150-200150-250200-4005.7.2.6垫片安装时，可根据需要分别涂以石墨粉、二硫化酐、石墨机油，使用软垫片时，周边应整齐，垫片尺寸应与法兰密封面相符。5.8补偿装置应符合下列规定5.8.1波纹膨胀节应按设计文件规定进行预拉伸，受力应均匀。5.8.2波纹膨胀节内套有焊缝的一端，在水平管道上应逆介质流向安装，在铅垂线方向应置于上部。5.8.3波纹膨胀节应与管道保持同轴，不得偏斜。5.8.4波纹膨胀节安装时，应设临时约束装置，待管道安装固定后再拆除。5.9支架制作安装管道安装时，应及时按设计要求制作安装支吊架。支吊架位置应准确，安装应平稳牢固，与管道接触良好，并作好防腐蚀处理。5.10静电接地安装5.10.1氢气管道有静电接地要求，各段管道应同时导电，当每对法兰螺栓接头间电阴值超过0.03欧姆时，应设导线跨接。5.10.2管道系统的对地电阻超过100欧姆时，应设置两处接地引线，接地引线宜采用焊接形式。25SelectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesTSelectionParbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbagraphFoLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPoctionParagraphFormatLineSpacingLinesToPoints2SelectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraphFccccccccccccccccccccccccccccccccccccccccccccccccccccccccormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPoctionParagra SelectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesTSelectionParbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbagraphFoLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPoctionParagraphFormatLineSpacingLinesToPoints2SelectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraphFccccccccccccccccccccccccccccccccccccccccccccccccccccccccormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPoctionParagra5.10.3用作静电接地的材料或零件安装前不得涂漆，导电接触面必须除锈并紧密连接。5.10.4静电接地安装完毕后，必须进行测试，电阻值超过规定时应进行检查与调整。6．质量保证措施6.1质量组织措施6.1.1施工班组建立质量管理网络，落实质量职能。6.1.2坚持“三工序”原则，施工人员要干好本道工序，保护上道工序，服务下道工序。运用“目测、量测、试验”等手段做好自检、互检、专检工作。6.1.3利用质量专题会议形式定期分析总结质量情况，找出质量控制因素，确保工程质量控制。6.2技术措施6.2.1按工序重要程度和技术薄弱环节确定质量ABC（R）控制点，并根据A、B、C（R）质量控制点程度控制工程质量。6.2.2确保工程原料合格，对一些关键原材料严把质量关。6.2.3定期维修施工机械设备，确保施工机具完好率和利用率，保证施工正常进行，施工人员正确操作施工机械。6.2.4对于不合格产品，严格控制，及时消除质量隐患。6.2.5施工人员持证上岗。7安全保证措施和文明施工7.1安全保证措施25SelectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesTSelectionParbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbagraphFoLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPoctionParagraphFormatLineSpacingLinesToPoints2SelectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraphFccccccccccccccccccccccccccccccccccccccccccccccccccccccccormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPoctionParagra SelectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesTSelectionParbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbagraphFoLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPoctionParagraphFormatLineSpacingLinesToPoints2SelectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraphFccccccccccccccccccccccccccccccccccccccccccccccccccccccccormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPoctionParagra7.1.1施工班组设兼职安全员，对工人进行安全教育培训，持证上岗。7.1.2施工班组建立专业检查、职工检查和日巡安全检查制度。7.1.3施工用安全设施、架设工具、机械设备进场前进行安全检查，合格后方能进入现场施工。7.1.4防触电、防暑防冻、7.1.5施工用电做到“一机一闸一漏”、“一箱一闸”，指定专人操作。7.1.6严格执行甲方的有关规章制度。7.2文明施工7.2.1设备、材料进入现场须按规定摆放，做到上盖下垫，标识准确，特殊材料和设备要采取防滑、防潮、防腐等措施。7.2.2工机具要妥善保管，摆放整齐，施工余弃材料分类存放、及时清理。7.2.3现场安全、消防设施准备齐全，标识醒目。7.2.4保护好成品和半成品。7.2.5严格劳动纪律、工艺纪律，加强施工规范管理，杜绝违章作业和野蛮施工。25SelectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesTSelectionParbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbagraphFoLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPoctionParagraphFormatLineSpacingLinesToPoints2SelectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraphFccccccccccccccccccccccccccccccccccccccccccccccccccccccccormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPoctionParagra'