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GB/T 31316-2014 PDF English

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GB/T 31316-2014: General principles of cathodic protection in sea water
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Basic data

Standard ID GB/T 31316-2014 (GB/T31316-2014)
Description (Translated English) General principles of cathodic protection in sea water
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard H25
Classification of International Standard 77.060
Word Count Estimation 26,240
Date of Issue 12/5/2014
Date of Implementation 9/1/2015
Quoted Standard ISO 8044
Adopted Standard ISO 12473-2006, IDT
Regulation (derived from) Announcement of Newly Approved National Standards 2014 No. 27
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
Summary This Standard specifies the basic principles of cathodic protection, the factors determining criteria include cathodic protection, relevant environmental factors and design considerations and secondary impact of cathodic protection. This Standard does not

GB/T 31316-2014: General principles of cathodic protection in sea water


---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.
General principles of cathodic protection in sea water ICS 77.060 H25 National Standards of People's Republic of China General seawater cathodic protection (ISO 12473.2006, IDT) Issued on. 2014-12-05 2015-09-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Table of Contents

Preface Ⅰ 1 Scope 1 2 Normative references 1 3 Terms and definitions 4 buried or immersed metal corrosion Principle 5 Cathodic Protection Principle 5 7 6 Application of Cathodic Protection 9 7 to determine the extent of cathodic protection 11 8 11 protection guidelines 9 Design 15 10 influence of environmental factors on cathodic protection current 16 11 18 affect the secondary cathodic protection And surface coatings related cathodic protection 12 19 Appendix A (normative) reference electrode 21

Foreword

This standard was drafted in accordance with GB/T 1.1-2009 given rules. This standard uses the translation method identical with the international standard ISO 12473.2006 "General seawater cathodic protection." This standard made the following editorial changes. --- "This European standard" be replaced by "this standard"; --- Delete the words "the foreword and introduction of international standards." The standard proposed by China Iron and Steel Association. This standard by the National Steel Standardization Technical Committee (SAC/TC183) centralized. This standard was drafted. Institute of Metal Research, Metallurgical Industry Information Standards Institute. The main drafters of this standard. Wangzhen Yao, Wang Chuan, Hou Jie, Han Wei. General seawater cathodic protection

1 Scope

This standard covers the basic principles of cathodic protection, judging criteria include cathodic protection, relevant environmental factors and design considerations because Prime and secondary impact of cathodic protection. This standard does not apply to cathodic protection of concrete reinforcement.

2 Normative references

The following documents for the application of this document is essential. For dated references, only the dated version suitable for use herein Member. For undated references, the latest edition (including any amendments) applies to this document. ISO 8044 Corrosion of metals and alloys - Basic terms and definitions (Corrosionofmetalsandaloys-Basicterms anddefinitions)

3 Terms and Definitions

As defined in ISO 8044 and the following terms and definitions apply to this document. 3.1 Acidic acidity The hydrogen ion concentration than the hydroxide ion concentration (pH < 7). 3.2 Alkaline alkalinity Hydroxide ion concentration exceeds the concentration of hydrogen ions (pH > 7). 3.3 Anaerobic conditions anaerobiccondition No free oxygen in solution. 3.4 Anode region anodicarea As part of the metal surface of the anode. 3.5 Pressure linker bond Metallic conductor, usually copper as the material to ensure equipotential connection between two points. 3.6 Calcareous sediments calcareousdeposits Cathodic protection causes within the cathode region of alkali concentration is increased, leading to calcium deposition. 3.7 Calomel electrode calomelreferenceelectrode Calomel electrode is formed of potassium chloride solution, mercury and calomel. ...

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