GB/T 39154-2020 English PDF

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GB/T 39154-2020: Corrosion of metals and alloys - Cathodic protection of steel in concrete
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Basic data

Standard ID: GB/T 39154-2020 (GB/T39154-2020)
Description (Translated English): Corrosion of metals and alloys - Cathodic protection of steel in concrete
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: H25
Classification of International Standard: 77.060
Word Count Estimation: 46,488
Date of Issue: 2020-10-11
Date of Implementation: 2021-05-01
Regulation (derived from): National Standard Announcement No. 21 of 2020
Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration

GB/T 39154-2020: Corrosion of metals and alloys - Cathodic protection of steel in concrete

---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.
Corrosion of metals and alloys - Cathodic protection of steel in concrete ICS 77.060 H25 National Standards of People's Republic of China Corrosion of metals and alloys Cathodic protection of steel bars for concrete 2020-10-11 released 2021-05-01 implementation State Administration for Market Regulation Issued by the National Standardization Management Committee

Table of contents

Preface Ⅲ 1 Scope 1 2 Normative references 1 3 Terms and definitions 2 4 General 2 4.1 Quality Management 2 4.2 Personnel 3 4.3 Design 3 5 Building condition assessment and maintenance 3 5.1 General provisions 3 5.2 Information 3 5.3 Visual inspection and peeling investigation 3 5.4 Chloride analysis 3 5.5 Carbonization depth measurement 4 5.6 Thickness of concrete cover and position of steel bars 4 5.7 Electrical continuity of steel bars 4 5.8 Rebar/concrete potential 4 5.9 Concrete resistivity 4 5.10 Repair of concrete 5 5.11 Cement protective layer 5 5.12 New Buildings 6 6 Cathodic protection system components 6 6.1 General provisions 6 6.2 Anode 6 6.3 Monitoring sensors 10 6.4 Monitoring equipment 11 6.5 Data Management System 12 6.6 DC cable 13 6.7 Junction box 13 6.8 Power supply 14 6.9 Transformer rectifier 14 7 Installation procedure 15 7.1 Electrical continuity 15 7.2 Performance monitoring system 15 7.3 Connection of steel bars in concrete 16 7.4 Concrete repair related to cathodic protection components 16 7.5 Surface treatment for anode installation 16 7.6 Anode installation 16 7.7 Anode system connection 17 7.8 Application of anode protective layer, surface sealant or decorative coating 17 7.9 Electrical installation 17 7.10 Testing the installation process 18 8 Debug 18 8.1 Visual inspection 18 8.2 Measurement before power on 18 8.3 Initial energization of impressed current system 19 8.4 Initial commissioning of impressed current system 19 8.5 Initial performance evaluation 19 8.6 Protection criteria. analysis of performance evaluation data 20 8.7 Protection current adjustment of impressed current system 21 9 System records and documents 21 9.1 Quality and test records 21 9.2 Installation and commissioning report 21 9.3 Operation and Maintenance Manual 22 10 Operation and maintenance 22 10.1 Cycles and procedures 22 10.2 System review 23 10.3 System review report 23 Appendix A (informative appendix) The principle of cathodic protection and its application in concrete reinforcement 24 A.1 General provisions 24 A.2 Protection criteria 24 A.3 Current density required for "cathodic protection" and "cathodic protection" 26 A.4 Cathodic protection of steel in buried or underwater concrete structures 26 A.5 Prestressed steel and hydrogen embrittlement risk 27 A.6 Basic silica reaction 27 A.7 Reference electrode 27 Appendix B (informative appendix) Design process 28 B.1 Preliminary design 28 B.2 Type and grade of anode system 28 B.3 Cathodic protection zone 28 B.4 Current supply 29 B.5 Design issues of buried or immersed concrete structures 29 B.6 Rebar connection 29 B.7 Cable 30 B.8 Transformer rectifier/DC power supply device for impressed current system 30 B.9 Monitoring 30 B.10 Document 30 Appendix C (informative appendix) Anode system description 31 C.1 Conductive coatings for concrete in the atmosphere 31 C.2 Active titanium 31 C.3 Other anode systems used in atmospheric concrete 32 C.4 Sacrificial anode 33 C.5 Anodes of submerged concrete structures 33 C.6 Anodes of buried concrete structures 34 Reference 36

Foreword

This standard was drafted in accordance with the rules given in GB/T 1.1-2009. The translation method used in this standard is equivalent to ISO 12696.2016 Cathodic Protection of Steel Bars for Concrete. The Chinese documents that have a consistent correspondence with the international documents of the normative reference documents in this standard are as follows. ---GB/T 4208-2017 enclosure protection level (IP code) (IEC 60529.2013, IDT); ---GB/T 17045-2020 Electric shock protection devices and general parts of equipment (IEC 61140.2001, IDT); ---GB/T 19212.3-2012 Safety of power transformers, power supplies, reactors and similar products Part 3.Control transformers Special requirements and tests for power supplies with built-in control transformers (IEC 61558-2-2.2007, IDT); ---GB/T 19212.5-2011 transformers, reactors, power supply devices and similar products with a power supply voltage of 1100V and below Safety Part 5.Special requirements and tests for isolation transformers and power supply devices with built-in isolation transformers (IEC 61558-2-4.2009, IDT); ---GB/T 19212.14-2012 Transformers, reactors, power supply units and similar products with a power supply voltage of 1100V and below Safety Part 14.Special requirements and tests for autotransformers and power supply devices with built-in autotransformers (IEC 61558-2-13.2009, IDT); ---GB/T 19212.17-2019 Transformers, reactors, power supply units and similar products with a power supply voltage of 1100V and below Safety Part 17.Special requirements and tests for switching power supply devices and transformers for switching power supply devices (IEC 61558-2-16.2013, MOD); ---GB/T 20138-2006 The degree of protection of electrical equipment enclosures against external mechanical collisions (IK code) (IEC 62262.2002, IDT). This standard has made the following editorial changes. --- In order to be consistent with the existing standards, the standard name was changed to "Cathodic Protection of Steel Bars for Corrosion of Metals and Alloys". This standard was proposed by the China Iron and Steel Association. This standard is under the jurisdiction of the National Steel Standardization Technical Committee (SAC/TC183). Drafting organizations of this standard. China Metallurgical Construction Research Institute Co., Ltd., Metallurgical Industry Information Standards Research Institute, Zhejiang Transportation Planning and Design Research Institute Research Institute Co., Ltd., Hangzhou Benchuang Technology Co., Ltd., Shenzhen University, China Metallurgical Testing and Certification Co., Ltd. The main drafters of this standard. Zhang Ying, Sun Jia, Hou Jie, Li Qian, Shen Jian, He Xiaoyu, Xing Feng, Liu Dong, Sun Menghan, Xu Xiaomei, Long Wujian, Liu Hongyi, Hao Tingyu. Corrosion of metals and alloys Cathodic protection of steel bars for concrete

1 Scope

This standard specifies the technical requirements for cathodic protection of steel bars in new and existing concrete structures, and is applicable to concrete structures. Steel bars, prestressed steel bars, uncoated steel bars and organic coated steel bars in the structure. This standard applies to steel in structures exposed to the atmosphere, buried, underwater and in a tidal environment. Note 1.Appendix A describes the principle of cathodic protection and its application in concrete reinforcement. Note 2.This standard does not apply to the cathodic protection of steel bars in non-concrete electrolytes, but applies to the cathodic protection of steel bars in cement-based materials. For example, early in the 20th century For long-term steel frame masonry, brick and clay composite structures, this standard is applicable to such structures, but special consideration needs to be given to the design, materials and materials of cathodic protection. installation.

2 Normative references

The following documents are indispensable for the application of this document. For dated reference documents, only the dated version applies to this article Pieces. For undated references, the latest version (including all amendments) applies to this document. IEC 60502-1 rated voltage 1kV (Um=1.2kV) to 30kV (Um=36kV) extruded insulated power cable and accessories Part 1.Rated voltage 1kV (Um=1.2kV) to 3kV (Um=3.6kV) IEC 60529 enclosure protection class (IP code) IEC 61140 Electric shock protection devices and general parts of equipment IEC 61558-1 Safety of transformers, reactors, power supply units and their combinations Part 1.General requirements and tests IEC 61558-2-1 Safety of power transformers, power supplies, reactors and similar products Part 2-1.General purpose separating transformers Special requirements and tests for power supplies with built-in separation transformers IEC 61558-2-2 Safety of power transformers, power supplies, reactors and similar products Part 2-2.Control transformers and built-in controls Special requirements and tests for the power supply of the transformer IEC 61558-2-4 Safety of transformers, reactors, power supply units and similar products with a power supply voltage of 1100V and below Part 2- Part 4.Special requirements and tests for isolation transformers and power supply devices with built-in isolation transformers ......

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