-
8#
楼土方开挖方案
Underground pipeline anticorrosive
construction
plan
地下管道防腐施工方案
Document
No.:
文件编号：
CNI23-CM-016
Fabrication
编制：
Examine and verify
审核：
Approval
批准：
23
8#
楼土方开挖方案
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
shrinkabl
e 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<
/p>
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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
（重庆）
气体有限公司
10
亿
Nm3/
年合成气制备
CO/H2
项
目，
位于重庆
（长
寿）化工园区内，<
/p>
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
< br>10070
寸，
埋地钢管防腐方法采用
< br>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范》<
/p>
...................................
（
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范》
......................
....
（
SH3022-1999
）
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5)
Technical code
for construction safety in
petrochemical
石油化工施工安全技术规程
....
.....................................
（<
/p>
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范
.................................
(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
Principl
e
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，
鉴于重庆地区
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，现目前重庆地区
3
PE
管道防腐生产范围在
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内完成，
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
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楼土方开挖方案
Bottom
→
spray
→
epoxy powder
底层→喷涂→环氧粉末
middle
level
→
extrusion
clad
ding
→
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。
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3)
High frequency heating equipment to
polyethylene particles of molten
polyethyl
ene
高频聚乙烯加热设备将聚乙烯颗粒熔化
4)
Pipeline coating machine to start
coating 3PE
管道包覆机开始包覆
3PE
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楼土方开挖方案
5)
Enter the cooling production
line
进入冷却生产线
6)
Inlet pipe
grinding processing
进入管口打磨处理
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7)
Inspection and
identification of issuance procedures indicated
factory
检查合格并注明标识发放出厂手续
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4.2
More
than 950mm pipeline,
wel
ding, pipe, heat
shrinkabl
e tape anticorrosive
process
950mm
以上管道
、焊口、管件、热收缩带防腐流程
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五、
3PE anticorrosive specific
production steps
3PE
防腐具体制作步骤
5.1 3PE pipeline anticorrosion
3PE
管道防腐
5.1.1
Preparatory process
准备工序
1)
According to
the production task list in the steel pipe
specifications, adjust all
transmission
lines on both sides of the driving wheel of the
distance and angle. De-rusting
production line pipe bottom height from
540 mm; 3PE coating production line pipe end away
from
630mm.
根据生产任务单中的钢管规格，
调整好所有传动线两侧传动轮的距离和角度。
除锈生产线
管底离地高度
540 mm; 3PE
防腐生产线管底离地
630mm
。
2)
Adjust
the good adhesive and PE extruder of front and
rear position.
调整好胶粘剂和
PE
挤
出机的前后位置。
3)
Adjust the
position and angle of silicon
rubber.
调整硅胶轮的位置和角度。
4)
Adjust the
spray gun position in radial and point to the pipe
axis, the discharge needle
into the
steel pipe surface distance 120-150mm.
调
整喷粉枪的位置在钢管径向并指向钢管轴心，
放
电针针尖到钢管
表面的距离
120-150mm
。
5)
Size
extrud
er in the plan started 3 hours
before the start of heating.
大小挤出机在计划开工<
/p>
前
3
小时开始加热。
6)
1 hour
before the start of PE raw material preheating and
drying, the drying temperature
is not
higher than 80 DEG c.
计划开工前
1<
/p>
小时进行
PE
原料预热烘干，干燥温度不
高于
80
℃。
7)
Check the
operation condition of equipment, give the
transmission parts lubricating oil
filling; the fastening shaft coupling
screws, cross shaft and the expansion joints to
add enough oil;
inspection of lifting
mechanism position and limit device
reliability.
检查设备运行情况，给各传动部位
加注润滑油；紧固传动轴的联结螺丝，给十字轴和伸缩节
加足油；检查升降机构的位置及
限位器的可靠性。
8)
Anticorrosion epoxy powder coating,
adhesive, polyethylene their quality shall meet
the
specifications, and through
inspection and acceptance.
防腐用的环氧粉末涂料、胶粘
剂、聚乙烯其
质量应满足规范要求，并经过检查验收。
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