Underground pipeline anticorrosive construction plan
Fabrication
. . 地下管道防腐施工方案
Document No.:文件编号：CNI23-CM-016
编制：
Examine and verify
审核： Approval 批准：
.
Contents 目录
Project overview
一、工程概况.........................................................1-3 Fabrication reference
二、编制依据.........................................................3-3 Construction principle
三、施工原则.........................................................3-3 3PE anticorrosive production process
四、3PE防腐生产工艺流程..............................................4-9 3PE anticorrosive specific production steps
五、3PE防腐具体制作步骤.............................................9-13 Heat shrinkable tape anticorrosive concrete steps
六、热收缩带防腐具体步骤............................................14-15 Safety attentions
七、安全注意事项....................................................16-16
. . .
Project Overview
一、工程概况
This project is Linde Huayi(Chongqing) Gases Co., Ltd 1 Billion Nm3/year Syngas CO/H2 project, located in Chongqing(Changshou) Chemical Industry Park, and the main work contains substation、compression unit、power absorption unit、washing unit、raw gas compressor unit、High temperature shift unit etc..
本项目为林德化医（）气体10 亿Nm3/年合成气制备CO/H2 项目，位于（长寿）化工园区， 其中主体工作包括变电所、压缩单元、变电吸附单元、洗涤单元、原料气压缩单元、高温变换单元等。
Underground pipeline contains circulating water system, water system, water supply and drainage system, a total of about 1744m welding pipe extension, Dia-in total of 10070 inch, buried steel pipe anticorrosion methods 3PE coating, to ensure that the underground pipeline anticorrosion construction safety, high quality, efficient completion of the project, especially the preparation of this plan.
地下管道包括循环水系统、工业水系统、给排水系统，管道共计延长米约1744m，焊接Dia-in共计10070寸，埋地钢管防腐方法采用3PE涂层防腐，为保证地下管道防腐施工安全、优质、高效完成，特编制本方案。
Fabrication reference
二、编制依据
1) Linde related drawing and technical standard 林德相关图纸、技术标准 2) Polyethylene coating for buried steel pipeline
埋地钢制管道聚乙烯防腐层........................................ (GB/T23257-2009) 3) Water supply and drainage pipeline engineering construction and acceptance
《给排水管道工程施工及验收规》...................................（GB50268-97） 4) Petroleum and chemical equipment and pipeline technical specification for the coating
anticorrosion
《石油化工设备和管道涂料防腐蚀技术规》..........................（SH3022-1999） 5) Technical code for construction safety in petrochemical
石油化工施工安全技术规程 .........................................（SH3505-99） 6) Petrochemical industry specification for construction and acceptance of water supply and
drainage pipeline
石油化工给排水管道施工及验收规................................. (SH3533-2003) 7) Steel surface before application of paint and rust grades and preparation grade
. . .
涂装前钢材表面锈蚀等级和除锈等级..................................（GB8923-88）
Construction Principle
三、施工原则 Underground pipeline, pipe anti-corrosion work by professional 3PE coating manufacturers,
in Chongqing area 3PE coating technology and scale of production to reach the coastal areas of the corrosion and scale, is now the Chongqing area 3PE pipeline coating production in the range of 20-950mm, the diameter more than 950mm pipe using thermal belt winding anticorrosion, and all fittings, mending, welding using the same PE shrink with anti-corrosion, anti-corrosion processing plant in the above work focused on the complete, reach the
maintenance period, transported into the construction site installation, pressure test after passing the required repairing and mending.
地下管道、管件防腐工作由专业3PE防腐厂家完成，鉴于地区3PE涂敷技术及生产规模达不到沿海地区的防腐水平及规模，现目前地区3PE管道防腐生产围在20-950mm，对于管径超过950mm的管道采用热缩带缠绕防腐，且所有管件、补伤、焊口同样采用聚乙烯热缩带防腐，以上防腐工作集中在加工厂完成，达到养护期后，运入施工现场安装，试压试验合格后按规定补口补伤。
四、3PE anticorrosive production process 3PE管道防腐生产工艺流程
4.1 The following 950mm pipeline anticorrosion process 950mm以下管道防腐流程
Bottom→spray→epoxy powder 底层→喷涂→环氧粉末 middle level→extrusion cladding→adhesive 中层→挤出包覆→胶粘剂 outer sphere→extrusion cladding→PE 外层→挤出包覆→PE
. . .
1) Pipe sandblasting管道喷砂
2) Pipeline through the lines into the high-frequency heating to heat, after the glue machine
glue.管道经过流水线进入高频加热机进行加热，经过涂胶机上胶。
3) High frequency heating equipment to polyethylene particles of molten polyethylene
高频聚乙烯加热设备将聚乙烯颗粒熔化
. . .
林德3PE防腐方案
