纯化水管线 酸洗钝化方案

附件20

卫生级管路酸洗钝化方案

Sanitary Pipe Chemical Pickled & Passivation Procedure

目录

TABLE OF CONTENTS

附件20 (1)

卫生级管路酸洗钝化方案 (1)

1编制方案的依据Basis of scheme compilation (3)

2工作范围Working scope (3)

3清洗工艺Cleaning process (4)

4清洗过程Cleaning process (5)

5废液处理Waste liquor treatment (10)

6甲方提供的条件Condition supplied by the owner (10)

7临时配管Temporary tubing (11)

8检验与验收Test and accept (11)

9安全 (12)

1编制方案的依据Basis of scheme compilation

1.1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 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 Piping

1.3《工业设备化学清洗质量标准》HG/T2387-2007

Quality Criteria of Chemical Cleaning for Industrial Equipment

1.4VWS提供的图纸

Drawings supplied by VWS

1.5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 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 front tank.

2.2纯水循环管道；

PW loop distribution Pipes.

3清洗工艺Cleaning process

3.1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 reset

3.3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 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 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 process

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