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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 compilation32工作范围Working scope33清洗工艺Cleaning process34清洗过程Cleaning process55废液处理Waste liquor treatment96甲方提供的条件Condition supplied by the owner97临时配管Temporary tub
2、ing108检验与验收Test and accept109安全111 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 in this way can piping meet t
3、echnical 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，如有其它材质，清洗前必须说明。Material of pipe
4、line 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.122.1 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 front tank.2.2 纯水循环管道；PW loop dist
5、ribution Pipes.3 清洗工艺Cleaning process33.1 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,钝化passivation水冲洗rinse by water系统恢复system
6、 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 1st loop instrument, 2nd loop instrument and other transmitter, UV, HX (including plate type and tube/shell) that
7、are not 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 components did not involved on the pipeline to be soa
8、ked 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 process1.2.3.3.1.3.2.3.3.3.4.3.5.3.5.1. 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 connected by temporary pipin
9、g 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.44.1 人工处理Manual handling4.4.1.4.1.1. 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 should be inspected in
10、 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;
11、.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 loop under the circumstances of cleaning
12、 stimulation.用纯化水（氯离子小于0.1ppM）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 0.1ppM). In rinse process control the balance between incoming and outgoing water and check if circulating system leaks. If so, do it well before adding cleaning
13、 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，钝化膜完整； Degrease. It aims to degrease the oil produced in the fabrication, installation of inner surface of system to make pickling agent get in full contact with inner surface system. Therefore cleaning can be finished fully and
14、passivation membrane is in complete situation.4.2.4.3.4.3.1. 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 (chlorine ion is less than 0.1ppM) into the system and begin the circulation. And add alkaline cleaning medicament for stainless steel and degreasing finishes.4.3
15、.2. 工艺条件：Process 温度 temperature 常温normal temperature循环时间 circulating time 2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。Circulating time can be lengthened or shortened according to the weather and piping.4.3.3. 脱脂药剂：Degreasing medicament序号No名称Name1氢氧化钠直到其浓度为2%-3%4.3.4. 测试项目：Items to be testedPH 1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 Degreasing agent to be kept as ab
