GB/T 34355-2017 English PDF

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GB/T 34355-2017: Steam and hot water boiler chemical cleaning regulation
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 34355-2017	1159	Add to Cart	7 days	Steam and hot water boiler chemical cleaning regulation	Valid

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Basic data

Standard ID: GB/T 34355-2017 (GB/T34355-2017)
Description (Translated English): Steam and hot water boiler chemical cleaning regulation
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: J98
Classification of International Standard: 27.060.01
Word Count Estimation: 58,596
Date of Issue: 2017-10-14
Date of Implementation: 2018-05-01
Issuing agency(ies): General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China

GB/T 34355-2017: Steam and hot water boiler chemical cleaning regulation

---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Steam and hot water boiler chemical cleaning regulation ICS 27.060.01 J98 National Standards of People's Republic of China Chemical cleaning rules for steam and hot water boilers 2017-10-14 Published 2018-05-01 implementation General Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China China National Standardization Administration released Directory Foreword Ⅲ 1 Scope 1 2 Normative references 1 3 Terms and definitions 1 4 basic requirements 2 5 technical requirements 2 6 industrial boiler cleaning and its quality requirements 4 Power station boiler cleaning and its quality requirements 5 8 Safety Requirements 10 9 cleaning waste discharge and handling 11 Appendix A (Normative) Pipe cutting and determination of sediment (scale) volume 12 Appendix B (Normative) Metal corrosion rate and inhibitor corrosion inhibition efficiency measurement 14 Appendix C (informative) commonly used cleaning agent quality standards and the amount calculated 17 Appendix D (Informative) Pickling heating method 20 Appendix E (Normative) Industrial boiler chemical cleaning process and its requirements 23 Appendix F (Informative) Chemical Analysis Methods for Boiler Cleaning Appendix G (informative) Identification of types of fouling 42 Appendix H (Informative) Power Station boiler chemical cleaning media selection 43 Appendix I (Normative) Boiler cleaning process and control 46 Appendix J (Normative) Determination of residual scale and cleaning descaling 53

Foreword

This standard was drafted in accordance with the rules given in GB/T 1.1-2009. This standard is proposed and managed by the National Boiler and Pressure Vessel Standardization Technical Committee (SAC/TC262). This standard drafting unit. China Boiler Water Treatment Association, Xi'an Thermal Research Institute Co., Ltd., Ningbo City, special equipment inspection and Research Institute, or State grid corrosion Institute of Technology, Guangdong Power Grid Co., Ltd. Electric Power Research Institute, Shandong Institute of Special Equipment Inspection Zibo points Institute of Yancheng branch of Jiangsu Institute of Special Equipment Safety Supervision and Inspection, Guangzhou Special Pressure Equipment Testing Institute, Xinjiang Uygur Autonomous Region Special Equipment Inspection and Research Institute, Henan Province, Boiler and Pressure Vessel Safety Testing Institute, Fengtai District, Beijing Special Equipment Testing Institute, Huadian Power Northeast Institute of Science, Nanjing University of Technology. The main drafters of this standard. Wang Jialing, Cao Jieyu, Zhou Ying, Jin Dong, Jiang Shaohua, Liu Shiyun, Yao Jiantao, Zhang Wenhui, Xu Zhijun, Zhao Junming, Mao Liyan, Luli Fang, Yang Ronghe, He Feng Yuan, Yang Wenzhong. Chemical cleaning rules for steam and hot water boilers

1 Scope

This standard specifies the boiler cleaning units and personnel, cleaning programs and cleaning media, metal corrosion prevention and control of chemical cleaning, clear Washing technology, chemical monitoring of the cleaning process, cleaning quality, cleaning safety and disposal of waste discharge requirements. This standard applies to fixed steam boiler and hot water boiler (hereinafter referred to as boiler) in the non-operating state of the water vapor space chemistry Cleaning.

2 Normative references

The following documents for the application of this document is essential. For dated references, only the dated version applies to this article Pieces. For undated references, the latest edition (including all amendments) applies to this document. GB/T 4334 metals and alloys corrosion of stainless steel intergranular corrosion test methods GB 8978 Integrated Wastewater Discharge Standard GB/T 15970.5 metal and alloy corrosion stress corrosion test - Part 5. Preparation and application of C-ring sample GB 50273 Boiler Installation Construction and Acceptance Specification DL/T 523 Chemical Cleaning Corrosion Inhibitor Application Performance Evaluation Index and Test Method DL/T 1151 (all sections) Thermal power plant scale and corrosion products analysis

3 Terms and definitions

The following terms and definitions apply to this document. 3.1 Boiler chemical cleaning boilerchemicalcleaning The use of chemical agents to remove boiler water vapor system in a variety of deposits, cleaning the metal surface, the formation of anti-corrosion corrosion protection film cleaning method. 3.2 Clean system cleaningsystem From the cleaning of equipment and temporary systems (dispensing boxes, temporary cleaning of pipes, valves, heating devices, temperature measuring devices, pressure measuring device Home, monitor and cleaning pump, etc.) system. 3.3 Cleaning process parameters cleaningprocessparameters Cleaning process to be controlled by the concentration of cleaning fluid, temperature, pH, flow rate and cleaning time and other parameters. 3.4 Cleaning agent cleaningagent Cleaning agents for boiler cleaning generally refer to hydrochloric acid, citric acid, ethylenediaminetetraacetic acid (EDTA), glycolic acid, formic acid, nitric acid, hydrogen Fluoric acid and so on. 3.5 Corrosion inhibitor corrosioninhibitor A very small amount of cleaning can significantly reduce the corrosion rate of the cleaning fluid on the metal, and does not reduce the cleaning effect of a class of agents. ......

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