Blowing and pressure test plan of instrument pipe-route
1、编制说明:
仪表管路吹扫、试压工作宜在仪表管路安装已经结束,并经过技术核对无误后进行。仪表管路吹扫、试压是仪表工程的重要环节,管线吹扫使仪表管路清洁、畅通、无阻塞,保证现场仪表正常使用;管路试压是检验管线焊接,管线与设备连接及设备与设备连接内在质量的有效手段,通过管路试压能消除质量隐患,对装置安全、正常运行意义重大。为了确保该项工作能安全有效的完成,编制了该方案。 2、编制依据:
2.1、工程合同及相关文件
2.2、仪表工程设计文件。
2.3、现行《自动化仪表工程施工及验收规范》。
2.4、现行《工业金属管道工程施工及验收规范》。
2.5、工艺管道、设备专业,吹扫、试压方案。
3、工程概况:
工程概况应包括:工程名称、范围、地点、规模、特点、主要技术参数、主要实物工程、工期要求及投资等方面的内容。
附:主要实物工程量表:
序号 | 吹扫、试压项目 | 单位 | 数量 | 备注 |
1 | 仪表风支管线 | | | |
2 | 伴热支管件 | 系统 | | |
3 | 测量管线 | 套 | | |
4 | 管件安装 仪表 | 温度仪表 | 支 | | |
流量计 | 共沸精馏 台 | | |
节流孔板 | 台 | | |
调节阀 | 台 | | |
在线分析仪表 | 台 | | |
5 | 设备安装 仪表 | 温度仪表 | 支 | | |
浮筒液位计 | 台 | | |
单双法兰液位计 | 台 | | |
浮球液位计 | 台 | | |
其它 | 台 | | |
6 | 气动信号管路 | 系统 | | |
| | | | | |
4、操作方法及技术要求:
Operation method and technique request:
4.1、吹扫:
防伪打印机
Blowing:
4.1.1、一般规定
General Prescriptions:
a、仪表管路吹扫宜同工艺管道系统同步进行,也可用无油空气压缩机自备气源进行吹扫。
Blowing instru. pipeline at the step of process pipe blowing simultaneously. Blowing is also permitted with self-supply air-source by air compress.
b、仪表管路吹扫应先工艺管线,后仪表管线;先主管线,后支管线。
After basic eligibility of process pipe blowing, blowing instru. conduit. First, man pipeline,
and then pipeline.
c、仪表风管路系统吹扫过程中,当目测无烟尘时,在排气口放置靶板检验,5分钟内靶板上无铁锈、尘土、水份及其它杂物为合格;测量管线、伴热管线、气动信号管线,目测排出气体无尘烟、杂质为合格。
During the course of system blowing of instru. wind-conduit, if seeing non-smoke, place target-plate at drain outlet. Non-existence of iron-rust, dust, water, or other waste in fire minutes, it is passable. Seeing non-smoke gas from measuring pipeline, tracing pipeline, pneumatic signal pipeline is qualified.
4.1.2、仪表风管吹扫
游梁式抽油机Blowing of instrument wind-pipe:
本方案以所附仪表风系统图进行叙述
Explain and state with adherent system drawing of instru. wind:
Branch pipeline of instru. wind
No.1. System Drawing of instru. Wind-branch, pipeline.
4.1.2.1、与工艺管道系统同步进行吹扫操作步骤:
Operating procedure of con-step blowing:
a、确认Ⅰ、Ⅱ、1、2、3系统内所有阀门处于关闭状态。 Verifying all valves of system Ⅰ,Ⅱ,1,2,3,shut off.
b、断开气源球阀1、2、3后仪表风管线,并错开接口。
Disconnecting air supply globe-valve 1, 2, 3, and staggering joint.
c、待工艺仪表管线吹扫基本干净后,打开仪表风支管线阀Ⅰ和排放阀Ⅱ,吹扫合格后,关闭排放阀Ⅱ。
After basic purging cleaning of process instru. pipeline, Open wind-branch pipe-line valve I and drain valveⅡ, blowing to eligibility and then closing drain valve Ⅱ.
d、分别打开气源球阀1、2、3,检验合格后关闭。系统内所有用气支线吹扫合格后,关闭仪表风支管线阀Ⅰ,并打开排放阀Ⅱ,排净系统内气体后关闭。
Opening air-supply globe valve 1,2,3 and closing after test qualifiedly one by one. When all air-usage branch-lines of system blow to eligibility, shut valve I, open drain valveⅡ,and close it after blowing system air out.
e、将气源球阀1、2、3后仪表风管线复位。
Resetting instru. wind-pipe line behind globe valve 1,2,3.
4.1.2.2、自备气源进行吹扫操作步骤:
垃圾篓Blowing Operation procedure with self-supply air-source.
a、用临时管线连接排放阀Ⅱ与空气压缩机储气罐出口;断开仪表风支管线阀Ⅰ与管线连接,并错开接口或采取保护措施。
Connecting drain valve Ⅱand tank outlet of air compressor by temporary pipe-line. Disconnecting valve I from pipe line and staggering connector or taking protective measure.
b、检查、确认阀Ⅱ,1、2、3处于关闭状态。
Inspecting and affirming valve 1, 2, 3 closed.
c、断开各气源球阀后仪表风管线,并错开接口。
Disconnecting instru. wind-pipe behind every air-supply globe valve, and staggering joint.
d、当储气罐压力达到0.5~0.7Mpa时,打开阀Ⅱ,在阀Ⅰ断开处检验,合格后,关闭压缩机,使阀Ⅰ复位,并使阀Ⅰ处于关闭状态。
Opening valve Ⅱ and testing at the broken of valveⅠwhen pressure in tank is up to 0.5-0.7MPa. Shutting off the compressor and returning valve Ⅰwhich keeping it closed after eligibility,.
e、重新开启压缩机,关闭阀Ⅱ,使储气罐压力升至0.5~0.7Mpa。
Restarting compressor and shutting valve Ⅱuntil pressure in tank up to 0.5~0.7MPa.
f、打开阀Ⅱ,分别打开各气源球阀,1、2、3分别检验合格后关闭(可重复e、f步操作,至合格为止)。
Opening valve II and opening air-source globe valve, test it respectively until eligibility then shut it.
g、关闭压缩机,排净系统内气体后关闭阀Ⅱ。
Closing the compressor and shutting valve II when blowing internal gas out .
h、将气源球阀1、2、3后仪表风管线复位。
Resetting instrument wind-pipe line where lain behind air-source globe valve 1,2,3.
4.1.3、仪表伴热管线:蛋白纯化
Tracing pipeline of instrument.
4.1.3.1、热水伴热管线:
Hot-water tracing pipeline.
本方案以所附热水伴热系统图、蒸气伴热系统图进行叙述。
(图二)仪表热水伴热
Instrument
Level meter
Heating Box
No.2.Systematic drawing of 1.hot-water tracing
No3.Steam tracing system drawing
drawing
4.1.3.1.1、与工艺管线系统同步进行吹扫操作步骤:(本文以阀Ⅰ进气,Ⅳ排气为吹扫路径,反之以阀Ⅲ进气,阀Ⅱ排气)