Foreword

The standard series DL/T 5210“Code for Construction Quality Acceptance and Evaluation of Electric Power Construct”consists of 8 parts：

——DL/T 5210.1　Part 1：Civil Work

——DL/T 5210.2　Part 2：Boiler Unit

——DL/T 5210.3　Part 3：Turbine Generator Unit

——DL/T 5210.4　Part 4：Instrumentation and Control

——DL/T 5210.5　Part 5：Piping & System

——DL/T 5210.6　Part 6：The Equipment and the System with the Water Treatment and Hydrogen Generation

——DL/T 5210.7　Part 7：Welding

——DL/T 5210.8　Part 8：Processing Preparation

This Part is part 6 of DL/T 5210.

This Part is formulated by the National Development and Reform Commission according to the requirements of the document“Announcement on Issuing the Professional Standard Project Planning in 2008”（Fagaiban Gongye〔2008〕No.1242）.

During drafting of this Part，the content of“Standard for Quality Inspection and Evaluation of Thermal Power Construction（tentative）-Part of Water treatment and hydrogen generation”（GuoDianDianYuan〔2001〕No.210）of the former State Power Corporation was referred to.

AppendixA of this Part is the Informative Appendix，Appendix B，Appendix C and Appendix D of this Part are the Normative Appendixes.

This Part is proposed by the China Electricity Council.

The Technical Committee for Standardization of Thermal Power Construction in power industry is under the jurisdiction of and in charge of the explanation of this Part.

Chief drafting organization：Hebei No.1 Electric Power Construction Company

Participating organizations：No.1 Engineering Company of Northeast Electricity Authority，the First Electric Power Construction Company of Jiangsu Province，the Zhejiang Thermal Power Construction Company

Chief drafting staff：Chen Zhihua，Liu Yiqiu，Ma Zhijun，Zhao Zhuren，Zhang Suoqing，Jia Yong，Sun Jian，Sun Weidong，Zhu Wenjie

The“Standard for Quality Inspection and Evaluation of Thermal Power Construction（tentative）-Section of Water Treatment and Hydrogen Generation”（GuoDianDianYuan〔2001〕No.210）issued by the capital construction department of the former Ministry of Water Resources and Electric Power is abolished simultaneously since the implementation date of this Part.

During the process of implementing this Part，the relevant opinions and advice，whenever necessary，can be posted or passed on to the Standardization Center of the China Electricity Council（No.1，Baiguang Road Ertiao，Beijing 100761）.

English translators：Chen Yanfang，Jiang Hong，Meng Lixue

Chief reviewers：Su Zhilin，Zhan Zifeng，Zhang Xianqiu，Guan Yiming