熔盐储罐焊接施工方案(修改)(共74页).docx

精选优质文档-----倾情为你奉上目录1.工程概况1.Project Summary本工程为2台20000m³拱顶冷、热熔盐储罐新建工程，工程所在地位于青海省德令哈市西出口太阳能发电基地内，工程内容包括储罐罐主体制作、安装、防腐、及相关检测This work is for two sets of 20000m³ vault hot melt salt storage tank new project, the project is located in solar energy base of west exit of Delingha City, Qinghai province, and the project contents include fabrication, installation, anti-corrosion, and relevant inspection of the main body of the storage tank.储罐结构形式为拱顶固定顶，共由五带壁板组成，壁板材质为Sa-516 Gr.70 N，壁板厚度从下到上依次为42mm、34mm、25mm、16mm、10mm。

The storage tank structure is fixed arch roof which is constituted with five shell plates. The material of shell plate is Sa-516 Gr.70 N， the thickness of shell plate from up to down in sequence is 42mm, 34mm, 25mm, 16mm and 10mm respectively.2 编制依据2 Compilation Basis2.1 中广核德令哈50MW光热项目热传储热系统施工图2.1 Construction Plan of CGN-Delingha 50MW Solar Thermal Power Generation Project Heat Transmission and Heat Accumulation System2.2 合同、招标文件；2.2 Contract, bidding document;2.3 Q/JH121.11.004-92《安全技术操作规程》2.3 Q/JH121.11.004-92 Safety Technical Operation Process2.4 GB50128－2014《立式圆筒形钢制焊接储罐施工及验收规范》2.4 GB50128-2014 Vertical Cylindrical Steel Storage Tank Welding Construction and Acceptance Specification2.5 SH/T3530-2011《石油化工立式圆筒形钢制储罐施工工艺标准》2.5 SH/T3530-2011 Technical Standard for Construction Vertical Cylindrical Steel Storage Tanks for Petrochemical Industry2.6 GB50341-2003《立式圆筒形钢制焊接油罐设计规范》2.6 GB50341-2003 Code for Design of Vertical Cylindrical Welded Steel Oil Tanks2.7 GB/T709-2006《热轧钢板和钢带的尺寸、外形、重量及其允许偏差》2.7 GB/T709-2006 Dimension, Shape, Weight and Tolerances for Hot-rolled Steel Plates and Sheets2.8 NB/T47014-2011《承压设备焊接工艺评定》2.8 NB/T47014-2011 Welding procedure qualification for pressure equipment2.9 NB/T47015-2011 《压力容器焊接规程》2.9 NB/T47015-2011 Welding specification for Pressure Vessels2.10 GB/T985-1998《气焊、手工电弧焊及气体保护焊焊缝坡口基本形式与尺寸》2.10 GB/T985-1998 Basic forms and sizes of weld grooves for gas welding manual arc welding and gas-Shielded arc weldind2.11 GB/T986-1998《埋弧焊焊缝坡口的基本形式与尺寸》2.11 GB/T986-1998 Basic forms and sizes of weld grooves for submerged arc welding2.12 JB/T4730-2005《承压设备无损检测》2.12 JB/T4730-2005 Nondestructive Testing of Pressure Equipments3 施工准备3 Construction Preparation3.1 焊工考试3.1 Welder Examination3.1.1 所有参加熔盐罐制作安装工程的焊工必须经过严格的审核和正规的岗前培训，持证上岗，对从事埋弧焊、气体保护焊和手工焊的焊工，应按GB50236-2011《现场设备、工艺管道焊接工程施工规范》焊工考核的有关规定进行考试。

3.1.1 All welders who will take participation in the manufacture and installation of the hot melting salt tank must receive strict reviewing and regulated pre-job training and obtain certificates before being appointed the post. The welders who take participation in the submerged welding, gas shielded welding and manual welding should take examination as per relevant regulations for assessment of welders in Field Equipment, GB50236-2011 Process Pipeline Welding Construction Specification.3.1.2 对于首次施焊SA-516 Gr.70 N钢板的焊工，必须考试合格，才允许进行相应的焊接工作。

3.1.2 The welder who first welds SA-516 Gr.70 N steel plate must take the examination and then be appointed to conduct the welding work after examination qualification.3.1.3 根据现场情况，在正式开工前，完成焊工考试情况按焊工实际焊接类型分别进行考试考试合格后，方可进行焊接操作3.1.3 According to field situation, the welder examination should be completed before formal starting of the construction. The examination should be prepared in line with the actual welding type respectively which will be performed by the welder. The examination qualified welder will be awarded with welder qualification certificate and will be appointed the post in line with certificate. No welding job for welder who failed to be awarded with welder qualification certificate.3.1.4 焊接工作进行前，焊接技术员要对所有焊工进行焊接技术交底，让焊工熟知焊接工艺方案，熟练掌握所焊部位的材质种类和所采用的工艺方法，如坡口形式、焊材选用、焊接电压电流调节、焊接速度控制等，让焊工了解焊接应力与焊接缺陷的危害与预防措施。

3.1.4 Before welding, the welding technician should deliver technical details disclosure to all welders to make each welder be familiar with the welding technology plan, to perfectly master the materials classification and applicable technology for the welding parts, such as groove shape, welding materials selection, regulation of welding voltage and current, and welding speed control, in order to make the welders understand the hazards and prevention measures of welding stress and welding defects.3.2焊接设备3.2 Welding device 直流电焊机、CO2气体保护焊焊机、埋弧自动平（角）焊机等。

焊接设备的电流表、电压表、等仪表、仪器以及规范参数调节装置应定期进行检验上述表、计装置失灵时，不得进行焊接手工电弧焊、氩弧焊焊机必须集中放置在离焊接区较近的焊机棚内；自动焊根据现场需要进行放置，放置焊接设备的场地必须保持通风良好、干燥、维修方便Welding equipment: DC welder, CO2gas shielded welding machine, automatic submerged arc flat fillet welder, etc. Ammeter, voltmeter, and other specification parameter adjusting devices shall be inspected periodically. When the aforesaid meter and metering device fail to function, welding shall not be performed. SMAW and GTAW welder must be collectively placed in the weld machine shed, near by the weld zone, the automatic。