FGD施工及验收技术规范(吸收塔部分)

中电投远达环保工程有限公司企业标准YDEP/QB101002A-2006FGD设备制造、安装施工及验收技术规范吸收塔钢结构安装（试用版）2006年2月28日发布2006年3月1日实施中电投远达环保工程有限公司工程部中电投远达环保工程有限公司安全质量部QB联合发布FGD设备制造、安装施工及验收规范（吸收塔钢结构安装部分）编号：YDEP/QB101002A-2006第页共11页2目录1铁件预埋与基础划线··········································································31.1吸收塔基础移交条件···································································31.2基础划线··················································································32底部支撑梁和塔底板安装····································································32.1底部环形梁安装：······································································32.2格栅支撑梁安装·········································································32.3基础二次浇灌············································································42.4底板安装··················································································43筒体组合·························································································43.1筒体组合··················································································43.2塔顶组合··················································································54壳体安装·························································································54.1筒体安装··················································································54.2环形加强筋的安装······································································54.3烟气进出口组合、安装································································64.4烟气出口段组合、安装································································64.5壁板焊接检查············································································65内部装置安装···················································································75.1喷淋层安装···············································································75.2除雾器安装···············································································76塔顶安装·························································································87壳体外部附件安装·············································································87.1人孔、检修门安装······································································87.2管接头，测量孔安装·································································87.3梯子平台················································································87.4循环浆液泵入口滤网·································································97.5排空箱安装·············································································97.6喷淋、氧化空气、循环管、冲洗水管道···········································97.7搅拌器安装·············································································98防腐衬里·························································································99油漆·····························································································1010保温与外装饰板·············································································1011充水试验······················································································1112基础沉降观测················································································1113本规范疏漏弥补························································································11FGD设备制造、安装施工及验收规范（吸收塔钢结构安装部分）编号：YDEP/QB101002A-2006第页共11页31铁件预埋与基础划线1.1吸收塔基础移交条件1.1.1基础混凝土强度达到设计强度的70%以上。1.1.2基础中心坐标位置（纵横中心）误差≤20mm。1.1.3基础外形尺寸误差±10mm。1.1.4基础表面不平整度≤3mm/m。1.1.5基础上平面标高与设计要求误差±10mm。1.1.6预埋铁件埋设后中心位置允许误差≤5mm；标高允许误差+0~-5mm，表面平整度≤2mm/m。1.2基础划线1.2.1以控制轴线为基准，可根据基础予留地脚螺栓孔洞、予埋铁件误差调整基础中心，以控制在≤10mm为宜，划出基础纵横十字中心线，并在基础外围作好永久标记。1.2.2以基础纵横中心线为基准，划出圈梁及圆周等分角度线，且标记清晰。1.2.3格栅底板支撑梁中心划线误差≤±2mm，标记清晰。2底部支撑梁和塔底板安装2.1底部环形梁安装：2.1.1底部环形支撑梁就位位置与基础中心距离误差±5mm。2.1.2底部环形支撑梁标高误差不大于±5mm2.1.3底部环形支撑梁水平允许误差≤2mm2.2格栅支撑梁安装2.2.1格栅支撑梁就位位置与十字中心线距离误差不大于±3mm2.2.2格栅支撑梁标高与底部环形支撑梁标高误差不大于±2mmFGD设备制造、安装施工及验收规范（吸收塔钢结构安装部分）编号：YDEP/QB101002A-2006第页共11页42.3基础二次浇灌2.3.1预埋的基础垫铁与环形支撑梁、格栅支撑梁必须焊接牢固，且调整垫片不得超过三块，并点焊固定。2.3.2二次浇灌的混凝土标号要符合设计要求，一般均高于基础混凝土标号，灌注要密实。2.3.3二次浇灌抹面层不平整度为≤2mm/m。2.4底板安装2.4.1底板与混凝土表面应密实贴合，可采用压重法固定底板，不应有突起，底板与混凝土表面之间不应出现空隙，且不得进水。在格栅支撑梁方框内，底板不平整度≤3mm/m。2.4.2底板的对接焊缝与塞孔焊接必须磨平，搭接焊缝及角接焊缝必须打磨成R≥5mm的圆弧过渡。2.4.3“T”焊缝应进行50%抽真空检查。2.4.4所有焊缝应进行100%PT/MT检查，不得有裂纹、气孔。3筒体组合3.1筒体组合3.1.1筒体圆周方向等分8-12点测量，筒体不垂直度允许误差为板高度h的1.5‰，最大允许偏差≯5mm。3.1.2筒体圆周方向等分8-12点测量，筒体上口水平允许误差4.0mm。3.1.3筒体椭圆度允许偏差为直径的1.5‰，最大允许偏差≯20mm3.1.4筒体直径允许误差为直径的±1.5‰，当φ≥14000mm时最大允许误差±15mm；当8000mm≤φ＜14000mm时最大允许误差±10mm。3.1.5筒体相邻层间连接组件相配尺寸误差应趋向一致。其相配尺寸之间的误差要求，直径允许误差≤5mm，周长允许误差≤10mm。3.1.6以圆周方向等分4点测量筒体圆弧曲率允许误差5mm/m。3.1.7筒体纵向的平直度≯2mm/m.FGD设备制造、安装施工及验收规范（吸收塔钢结构安装部分）编号：YDEP/QB101002A-2006第页共11页53.2塔顶组合3.2.1塔顶组合后直径允许误差为名义直径的1‰，且当φ＞14000mm时最大允许误差±15mm；当8000mm≤φ≤14000mm时最大允许误差±10mm。3.2.2组件圆弧曲率允许误差5mm/m.。3.2.3组件平直度允许误差4mm/m.。3.2.4拼板时，焊缝对口的错边量≤10%，最大≯1mm。3.2.5加强梁间的距离允许误差≤10mm。3.2.6锥体的高度允许误差±20mm。4壳体安装4.1筒体安装4.1.1筒体安装后以圆周等分8-12点测量，直径允许误差是直径的±1.5‰，当φ＞14000mm时最大允许误差±20mm；当8000mm≤φ≤14000mm时最大允许误差±15mm。4.1.2筒体周长允许偏差为直径（mm）的±3‰，最大允许偏差≯45mm。4.1.3筒体安装垂直度允许误差，在筒体圆周方向等分8-12点测量，为测量高度H的1‰，最大≯30mm。4.1.4筒体各层间对口错边允许量为壁厚的10%，且最大不应超过1mm，内壁焊缝应打磨平整，外壁焊缝应满足焊