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1、仪表管路吹扫、试压方案Blowing and pressure test plan of instrument pipe-route1、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
2、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 系统2 伴热支管件 系统3 测量管线 套温度仪表 支流量计 台节流孔板 台调节阀 台4管件安装仪表 在线分析仪表 台温度仪表 支浮筒液位计 台单双法兰液位计 台5设备安装仪表 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 r
3、equest:4.1、吹扫：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 p
4、rocess 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-
5、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 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 i
6、nstru. 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、1、2、3 系统内所有阀门处于关闭状态。Verifying all valves of system ,，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
7、.c、待工艺仪表管线吹扫基本干净后，打开仪表风支管线阀和排放阀，吹扫合格后，关闭排放阀。After basic purging cleaning of process instru. pipeline, Open wind-213Wind conduit ofprocess Instru现场仪表箱仪表风支管线213线管风表仪 艺工现场仪表箱气动仪表Pneumatic instruLocal instru. BoxBranch pipeline of instru. windbranch pipe-line valve I and drain valve, blowing to eligibil
8、ity and then closing drain valve.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，并打开排放阀，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 valve,and close it after bl
9、owing 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：Blowing Operation procedure with self-supply air-source.a、用临时管线连接排放阀与空气压缩机储气罐出口；断开仪表风支管线阀与管线连接，并错开接口或采取保护措施。Connecting drain valve and tank outlet of air compressor by temporary
10、 pipe-line. Disconnecting valve I from pipe line and staggering connector or taking protective measure.b、检查、确认阀，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 0.50.7
11、Mpa 时，打开阀，在阀断开处检验，合格后，关闭压缩机，使阀复位，并使阀处于关闭状态。Opening valve and testing at the broken of valvewhen pressure in tank is up to 0.5-0.7MPa. Shutting off the compressor and returning valve which keeping it closed after eligibility,.e、重新开启压缩机，关闭阀，使储气罐压力升至 0.50.7Mpa。Restarting compressor and shutting valve u
12、ntil pressure in tank up to 0.50.7MP a.f、打开阀，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。Closing the compressor and shutting valve II when blowing internal gas out . h、将气源球阀
13、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：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。回水管回水支管线6549873C2B1A 热 水管保温箱 液位表 仪 表（图二）仪表热水伴热No.2.Systematic drawing of 1.hot-water traci
14、ng蒸汽支管线凝结水支管线BA1保温箱 仪表设备2（图三）：仪表蒸汽伴热系统图回水支管线6549873C2B1AHot-water pipe Heating Box Level meter Instrument4.1.3.1.1、与工艺管线系统同步进行吹扫操作步骤：（本文以阀进气，排气为吹扫路径，反之以阀进气，阀排气）Blowing Procedure at the same step of process pipe system:(Notes: blowing path is this: air-supply into valve I, air-relief from valve. On t
15、he contrary , air into valve , drain from valve a、确认阀、1、2、39 处于关闭状态。Make sure valve , closed.b、待工艺热水管吹扫基本干净后，打开阀和阀，热水支管线合格后，关闭阀。After clean blowing almost of process hot-water pipe, open valve I and valve . Do not shut valve until blowing of hot-water branch pipeline is passable.c、打开回水支管线排放阀，按回路依次进行
16、吹扫，合格后关闭各回路截止阀。No3.Steam tracing system drawingdrawing12Steam Branch PipelineBranch pipeline of condensation waterInstrument equipmentHeating boxOpen valve ,and blow in turn according to loop. Closing all retaining valves of loop after eligibility.d、排净系统内气体后关闭阀。Closing valve when blowing internal gas out . e、单独吹扫回水支线管。Bl
