Foreword

This code is a revision to GB 50049-94 Code for Design of Small-Size Power Plant made by Henan Electric Power Survey & Design Institute and interests concerned in response to the Notice on Printing and Distributing the Preparation and Revision Plan of National Standards for Engineering Construction 2006（JB［2006］No.136）issued by the former Ministry of Construction.

This code is organized into 24 chapters and one appendix，mainly including General，Terms，Basic Requirements，Heating（Cooling）and Electrical Load，Siting，Overall Planning，Main Power Building Arrangement，Coal Handling System，Boiler Equipment and System，Ash Handling System，Flue Gas Desulfuration System，DeNOx System，Steam Turbine Equipment and System，Water Treatment Equipment and System，Information System，Instrumentation and Control，Electrical Equipment and System，Hydraulic Facilities and Systems，Auxiliary and Ancillary Facilities，Architecture and Structure，Heating，Ventilation，and Air Conditioning，Environmental Protection and Soil and Water Conservation，Labor Safety and Occupational Health，and Fire Protection.

The revisionsmade mainly include the following:

1.The applicability of this code is extended to the design of thermal power plants that are operated at high temperature and high pressure and below parameters，installed with a single unit capacity below 125MW，operating at direct combustion mode and mainly burning solid fossil fuels；

2.Technical contents regarding desulfuration system and DeNOx system are added；

3.Technical contents regarding information system，soil and water conservation，and fire fighting are added.

In this code，the articles in bold type are compulsory provisions and must be enforced strictly.

The Housing and Urban-Rural Development of the People's Republic of China is in charge of the administration of this code and the explanation of the compulsory provisions.The China Electricity Council is responsible for routine management of this code.Henan Electric Power Survey & Design Institute is responsible for the explanation of specific technical contents of this code.Any comments and suggestions raised during the implementation of this code are to be referred to Henan Electric Power Survey & Design Institute at No.212，West Zhongyuan Road，Zhengzhou，Henan，P.R.China，450007.

The chief development organization，participating development organizations，chief drafting staff and chief reviewing staff of this code are as follows:

Chief Development Organization:

　　　　　　Henan Electric Power Survey & Design Institute

Participating Development Organizations:

　　　　　　Hunan Electric Power Design Institute

　　　　　　Zhejiang Electric Power Design Institute

　　　　　　Shandong Electric Power Engineering Consulting Institute Corp.，Ltd.

Chief Drafting Staff:

　　　　　　Lou Jinqi　Pang Ke　Wang Chengli　Qian Haiping　Wang Kui

　　　　　　Wei Yingxu　Wang Yuxin　Zhang Zhantao　Song Junshan　Zhang Junmin

　　　　　　Guo Hongbing　Guo Xiping　Chen Benbai　Liu Zili　Liu Yijun

　　　　　　Li Kewei　Zhang Weiling　Cui Yunsu　Xu Wei　Lou Yujia

　　　　　　Chen Xiao　Zhou Jian　Zhou Zhiyong　Yu Fang　Wang Ruilai

　　　　　　Zhang Jidong　Tang Ailiang　He Yuping

Chief Reviewing Staff:

　　　　　　Guo Xiaoke　Huang Baode　Wang Xiaojing　Guo Yali　Liu Dongya

　　　　　　Su Yunyong　Wang Huanjin　Li Jiangbo　Tian Rongrong　Huang Wen

　　　　　　Chen Bin　Cheng Jian　Hu Wei　Wang Zhenbiao　Cai Faming

　　　　　　He Weisha　Li Zhong　Fu Jianbo　Jin Weiqin　Chen Xi

　　　　　　Ge Simin　Cao Heping　Chen Lilin　Zhou Xianlin　Lin Shu

　　　　　　Gan Jiafu　Tang Lili　Huang Rong　Xu Tongshe　Chen Zheng

　　　　　　Wang Jieru　Liu Mingqiu　Xu Zhengyuan　Wang Xiaojun　Ma Tuansheng

　　　　　　Wei Xiangzhan　Hu Huaqiang　Li Xiangdong　Zhang Yansheng　Hou Liancheng

　　　　　　Tang Dongsheng　Zhang Kaijun　Zou Xiaonong