文档介绍：适用范围Applicability
本方案适用于*水泥项目5000m3油罐现场组装全过程。
This method statement applies to * cement plant project 5000m3 oil tank overall assembly and erection on site.
工程概况General
工程内容:5000m3立式拱顶油罐二座(罐体对接焊普通拱顶)
Project content: two 5000 m3 vertical vault oil tank. (common vault and butt weld for
the tank)
工程范围:油罐现场成形组对、焊接、检验以及罐体附件安装。
Project scope: oil tank site assembly, welding, inspection and installation of tank accessories
罐体直径24000mm,壁高12000mm,立式拱顶,拱顶厚6mm,罐壁厚6mm、8mm、10mm、12mm,底板厚6mm,罐体上有环形楼梯,罐顶有栏杆,罐内有加热管等。
The tank diameter 24000mm, wall high of 12000mm, vertical vault and the vault thickness is 6 mm. tank thicknesses is 6mm, 8mm, 10mm and thickness of 6mm. there are circular stairs, handrails on top and heating tubes inside the tank etc.
编制依据Reference Document
TCDRI提供的施工图纸及技术要求;
Erection drawing and technical requirement provided by TCDRI.
我公司现场施工设备;
Erection equipment of pany on site
施工程序流程图 Flow chart of erection process
基础复测
基础放线
底板组装
尺寸检查
组装板及支架搭设
筒体焊接
拱顶焊接
吊装用桅杆安装
包边角钢制作焊接
下节筒体组装、焊接
底节筒体组装焊接
加热器管安装
罐底焊接
尺寸检验
弓形板焊接
顶节筒体组装
拱顶组装
焊缝及底板凸凹检查
罐体提升
检查
桅杆调整
中间筒体组装、焊接
筒体焊缝检查
罐底真空试漏
罐体尺寸检查
Foundations re-survey
Foundation setting out
Base plate assembly
Dimension check
Fit plate &set up support
Weld cylinder shell
Weld vault
Install lifting mast
Covered edge angle iron fabrication and weld
Fit & weld lower tank shell
Fit & weld bottom tank shell
Install heating pipe
Tank bottom welding
Dimension check
Weld cambered plate
Fit top section of shell
Fit vault
Welds & bottom plate convexo-concave degree checking
Lifting tank
Check
Adjust mast
Fit & weld lower tank shell
Inspect tank welds
Air leakage test of bottom tank
Tank dimension check
主要施工工序描述describe the main construction process
基础检验Foundation acceptance
用钢卷尺、水准仪检查基础标高。基础中心标高允许偏差±20mm,每10m弧长内任意两点高差不大于6mm,且整个圆圈内高差不大于12mm。
Using steel tape and level to check foundation elevation, foundation center elevation allowable tolerance is ± 20mm, t