纯化水管线-酸洗钝化方案

1、附件20卫生级管路酸洗钝化方案Sanitary Pipe Chemical Pickled & Passivation Procedure起草/审核签名日期起草人审核/批准目录TABLE OF CONTENTS1 编制方案的依据 Basis of scheme compilation 32 工作范围 Working scope 3.3 清洗工艺 Cleaning process 3.4 清洗过程 Cleaning process 5.5 废液处理 Waste liquor treatment 9.6 甲方提供的条件 Condition supplied by the owner 97

2、临时配管 Temporary tubing 1.08 检验与验收 Test and accept 1.0安全 1.1.1 编制方案的依据 Basis of scheme compilation1.1 管道清洗的必要性 Necessity of piping cleaning 纯化水不锈钢管道在使用前，要进行脱脂、酸洗、钝化和消毒处理，管道 才能达到生产使用的技术要求。Before used stainless steel piping for purified water should be degreased, pickled, passivity and disinfected. Only

3、 in this way can piping meet technical needs of production and usage.1.2 脱脂工程施工及验收规范 HG20202-2000。Construction and Acceptance Criteria of Industrial Piping1.3 工业设备化学清洗质量标准 HG/T2387-2007Quality Criteria of Chemical Cleaning for Industrial Equipment1.4 VWS 提供的图纸Drawings supplied by VWS1.5管线的材质为全部为316L

4、,如有其它材质，清洗前必须说明。Material of pipeline is all 316L. Give a description of the material before cleaning if other materials are used.2 工作范围 Working scope主要为卫生级不锈钢SS316L管道Mainly for sanitary SS316L pipe.2.1从纯水制造机到纯水TANK接口前级的循环管道；Pipes from Orion to water tank and pipes of water tank returning to the fron

5、t tank.2.2 纯水循环管道；PW loop distribution Pipes.3 清洗工艺 Cleaning process3.1 采用我公司多年成熟的不锈钢管道清洗工艺Adopt cleaning process for stainless steel pipe which we are good at.3.2 管道的清洗工艺为： Piping cleaning process is as follows: 临时配管建立循环回路 form circulation 水冲洗 water flush 脱脂 degrease水冲洗 rinse by water酸洗 pickling,卡屯

6、化 passivation水冲洗 rinse by water系统恢复 system reset3.3 设备、管线系统内不宜清洗的部件：Components in the equipment and piping that are not suitable to be cleaned清洗系统中的仪表类（一次仪表、二次仪表及仪表传感器）和 UV 杀菌灯、 热交换器（板式及管壳式）对清洗液敏感的部件应临时拆除。Other components, such as 1 st loop instrument, 2 nd loop instrument and other transmitter, UV,

7、 HX （including plate type and tube/shell）that arenot in conformity with material and are sensitive to cleaning agent, such as flow meter, conductivity meter, level meter, wiring, tank, etc should be dismantled temporarily.3.4 管线系统内不参与清洗的短管等拆除的部件采用浸泡清洗， 清洗完成后经 检验合格后用塑料保鲜膜包扎，等管线系统清洗完成后再安装复位。All compon

8、ents did not involved on the pipeline to be soaked and cleaned. After cleaned and tested, it must be packed with plastic film. Installed and positioned after pipe clean finished.3.5 清洗流程 Cleaning process3.5.1. 所有需要清洗的管道用临时管道连接形成清洗循环系统，采用循环清 洗，清洗时建立一个循环回路 .All piping that need cleaning should be conn

9、ected by temporary piping to form circulation system. Circulating cleaning is used and one loop was formed when proceeding with cleaning.3.5.2. 清洗流程图4 清洗过程 Cleaning process 所有清洗系统的过程是一样的。 All cleaning system have the same process.4.1 人工处理 Manual handling4.1.1. 管线在清洗前要做全面检查，设备材质和方案中所列要一致。 Pipelines s

10、hould be inspected in the overall perspective before cleaning and make sure that equipment material is in conformity with that listed in the scheme.4.1.2. 不参与 清 洗的 被隔离的 仪表阀门 等要 在清 洗前 检查 确认 Isolated instruments and valves that are not cleaned should be checked before cleaning 。4.1.3. 测试样品必须包含两个新焊的， 未

11、清洗的焊缝。 一个安装在将要 清洗的管路中，另外一个放在化学清洗罐内 ;.4.2 水冲洗：水冲洗及试压的目的在除去管线内表面积灰、 泥沙、脱落的金属 氧化物及其它疏松污垢， 并在模拟清洗状态下对临时清洗回路进行泄漏检 查。Rinse with water. Rinse and pressure test aim to remove ashes, mud and shed metallic oxide and other loose dirt on the surface of pipelines and proceed with leak test on temporary cleaning

12、loop under the circumstances of cleaning stimulation.用纯化水(氯离子小于O.IppM )进行冲洗，冲洗时控制进出水平衡。冲洗 的同时检查清洗循环系统是否有泄漏等情况发生，如果有，在清洗剂添加 前要处理好。Rinse with purified water (chlorine ion is less than O.1ppM). In rinse process control the balance between incoming and outgoing water and check if circulating system leak

13、s. If so, do it well before adding cleaning agent.4.3脱脂：脱脂处理的目的系统内表面在制作、安装、过程中产生的油脂，使 酸洗液能完全，彻底地和系统内表面接触，从而使清洗彻底，卡屯化膜完整；Degrease. It aims to degrease the oil produced in the fabrication, in stallati on of inner surface of system to make pickli ng age nt get in full con tact with inner surface system

14、. Therefore clea ning can be fini shed fully and passivation membrane is in complete situation.4.3.1. 操作步骤，系统加入纯化水(氯离子小于0.1ppM)至预定液位，开始循环，并加入碱洗药剂。Procedure. Inject purified water (chlori ne ion is less tha n 0.1ppM) in to the system and beg in the circulati on. And add alkali ne clea ning medicame n

15、t for sta ini ess steel and degreas ing fini shes.4.3.2. 工艺条件：Process温度 temperature常温 normal temperature循环时间 circulating time2 小时 hours循环时间可根据天气、管道复杂情况适当延长或缩短。Circulati ng time can be len gthe ned or shorte ned accord ing to the weather and pip ing.4.3.3. 脱脂药剂：Degreasing medicament序号No名称Name1氢氧化钠直到其

16、浓度为2%-3%4.3.4. 测试项目：Items to be testedPH1 次/半小时 once/half hour脱脂液PH要求维持在12以上，当PH小于12时应添加氢氧化钠。PH of Degreas ing age nt to be kept as above 12 and sufficie nt degreas ing age nt to be added.PH测试使用PH试纸PH checked with PH test paper4.4 水力冲洗： 水力冲洗的目的是除去脱脂后脱落的污物， 并将系统表面残留 的脱脂液冲洗干净。Water rinse to get rid of

17、 shed ordure and flush remaining degreasing agent on system surface clean.4.4.1. 操作步骤，排尽系统内脱脂液，用大量水冲洗。Operation procedure. Drain degreasing solution in the system and flush the system with enough water.442.测试项目，用视觉观察冲洗水至透明无微粒，测定PH小于9。Items to be tested. Check flush water to be transparent with no pa

18、rticulate visually and make sure PH value less than 9.PH2 次/半小时 twice/ half hourPH 测试使用 PH 试纸，当 PH 小于等于 9 时水冲洗完成。PH checked with PH test paper and water flush finished when PH <9.4.5 酸洗：酸洗的目的是利用酸洗液将金属表面的铁锈氧化物等污垢进行化学 和电化学反应，生成可溶性物质，并利用酸洗液的冲刷作用除去污垢。Pickling. Pickling aims to make dirt like rusted o

19、xide on the surface of metal proceed with chemical and electromechanical reaction to produce dissoluble material and get rid of dirt with pickling solution.4.5.1. 操作步骤，排净系统水冲洗残液后，随即系统加水至一定液位循环， 加入不锈钢专用酸洗剂，随后补充水至控制液位。清洗过程中定期排 污排空。Operation procedure. After remaining rinse solution is drained away, in

20、ject a certain amount of water into the system to a certain level for circulation. Add special pickling medicament for stainless steel into it. Then inject a certain water to control level. Blow down the waste periodically during cleaning.常温 normal temperature4.5.2. 工艺条件： Process situation清洗温度 clean

21、ing temperature循环时间 circulating time2 小时 hours4.5.3. 酸洗钝化药剂：序号No名称Name1柠檬酸，保证浓度在10%15%4.54 测试项目：Items to be testpH 值 PH value1 次/半小时 twice/half hour酸洗液PH要求小于等于1，当PH大于1时应添加柠檬酸，保证浓度在10%15%。Picked chemical PH less tha n 1 and picked chemical to be added in casePH is higher than 1.PH测试使用PH试纸PH checked w

22、ith PH test paper4.6水冲洗：钝化完成后的水冲洗是为了把残留的钝化液除去。Water rinse. Water rinse after finishing passivation is to get rid of remai ning passivati on soluti on.4.6.1 .钝化结束后，排尽钝化液洗液，用纯化水(氯离子小于0.1ppM)进行冲洗，除去残留的钝化液，当PH直接近中性Ph>6,电导率差小于 0.5/cm，即可结束。After finishing passivation, drain away solution for passivatio

23、n and flush with purified water (chlorine icon is less than 0.1ppM) to remove remaining passivation solution. When PH is close to the neutralization (pH>6), differe nee of con ductivity less tha n1 Q/cm passivati on fini shes.4.6.2. 工艺条件 Process condition清洗温度 cleaning temperature常温 normal tempera

24、ture4.6.3. 测试项目：Items to be tested电导率 conductivity2 次/半小时 twice/half hourPH 测试使用 PH 试纸PH test by PH test paper. 使用电导率仪测定电导率 Cond tested by cond. Meter.4.7 系统恢复，清洗完成后将系统恢复原样。System reset. Get the system back after finishing cleaning.4.8 如果系统长时间不投入使用，建议用氮气封存。If the system is not put into use for a lon

25、g time, nitrogen is suggested for sealing.5 废液处理 Waste liquor treatment5.1 各清洗过程中的冲洗水，未添加清洗剂，可以直接排放。Flush water without cleaning additive during cleaning can be discharged directly.5.2 酸洗液的废液， 钝化液的废液， 用槽罐车把废水运输到废水处理厂处理排 放。Waste liquor of pickling solution and greasing solution should be delivering w

26、ith tank car to waste water treating plant for handling and discharging.6 甲方提供的条件 Condition supplied by the owner甲方负责提供如下公用设施：The following utilities are provided by the owner.6.1 水：全程采用纯化水，纯化水要求氯离子小于O.IppM,使用ORION纯化水.Purified water is used through the system and purified water should in elude less

27、tha n O.IppM chlori ne icon. Orion will provide the purified water for chemical pickled and passivati on.6.2 电源(清洗时使用纯化水泵)。Power supply. Purified water pump is used whe n clea ning.6.3 干燥无油的压缩空气或氮气，0.5-1 MPa。Dry compressed air or nitrogen with no oil of 0.5-1 MPa.7 临时配管 Temporary tubing7.1临时配管是指将清洗系

28、统中管道连接起来，形成清洗循环回路，清洗完成 后需要拆除的管道和设施。Temporary tubing is the piping and facility that need be dismantled after cleaning Connect piping in the cleaning system to form circulating loop.7.2 临时配管用软塑料管。Temporary tubi ng adopts soft plastic tube.8 检验与验收Test and accept8.1钝化表面目测，钝化膜完整，颜色一致。Check the surface of passivatio n visually to make sure that passivatio n film is complete and has the same color.8.2在回路的最后一个焊缝采用铁氰化钾溶液显蓝测定，变色时间大于 30秒 钟。On last