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GB/T 34355-2017: Steam and hot water boiler chemical cleaning regulation
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| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 34355-2017 | English | 1159 |
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Steam and hot water boiler chemical cleaning regulation
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GB/T 34355-2017
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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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