GB/T 19285-2014 English PDF

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GB/T 19285-2014: Inspection of corrosion protection for buried steel pipelines
Status: Valid

GB/T 19285: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 19285-2014	1979	Add to Cart	13 days	Inspection of corrosion protection for buried steel pipelines	Valid
GB/T 19285-2003	RFQ	ASK	9 days	Inspection of corrosion protection for buried steel pipelines	Obsolete

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Basic data

Standard ID: GB/T 19285-2014 (GB/T19285-2014)
Description (Translated English): Inspection of corrosion protection for buried steel pipelines
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: J15
Classification of International Standard: 23.040
Word Count Estimation: 90,987
Date of Issue: 5/6/2014
Date of Implementation: 12/1/2014
Older Standard (superseded by this standard): GB/T 19285-2003
Quoted Standard: GB/T 21447; GB/T 21448
Regulation (derived from): National Standards Bulletin No. 9 2014
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 buried steel pipeline corrosion protection engineering and quality inspection for corrosion protection of content, given the detection evaluation methods. Put into use after testing and evaluation of this standard applies to th

GB/T 19285-2014: Inspection of corrosion protection for buried steel pipelines

---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.
Inspection of corrosion protection for buried steel pipelines ICS 23.040 J15 National Standards of People's Republic of China Replacing GB/T 19285-2003 Buried Steel Pipeline Inspection of corrosion protection Issued on. 2014-05-06 2014-12-01 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, Definitions and Abbreviations 1 4 4 corrosive environment survey 5 8 outer coating inspection 6 of cathodic protection 9 Run checks and comprehensive examination of the corrosion protection system 137 Corrosion Appendix A (normative) soil corrosion detection method 18 Appendix B (normative) Test Method 26 stray current interference Annex C (normative) External Coating Physical Properties Test Method 35 Annex D (normative) coating damage point detection position is not excavation 41 Appendix E (normative) an outer coating 46 overall condition detection method Annex F (normative) insulating flange (joint) performance testing of insulation 50 Current test within Annex G (normative) tube 55 Annex H (normative) ground resistance testing 58 Annex I (normative) sacrificial anode Parameter Test Method 60 Appendix J (normative) close interval potential detection method 64 Annex K (normative) buried steel pipe outer coating Grading 66 Annex L (normative) buried steel pipeline corrosion protection systems Fuzzy Comprehensive Evaluation 68 Annex M (normative) buried steel pipeline corrosion protection system rating 76 Annex N (informative) buried steel pipeline corrosion protection systems fuzzy comprehensive evaluation study 77

Foreword

This standard was drafted in accordance with GB/T 1.1-2009 given rules. This standard replaces GB/T 19285-2003. This standard compared with GB/T 19285-2003, the main technical changes are as follows. --- Increased soil corrosion steel pipe inspection and evaluation methods buried; --- Increasing the outer coating condition and not damaged excavation point detection and evaluation methods; --- Increase the cathodic protection effect is not excavation detection methods; --- Increasing the comprehensive evaluation method of corrosion protection systems. --- Increase the corrosion protection of buried steel pipeline system fuzzy comprehensive evaluation algorithm example (see Appendix N). This standard by the National Standardization Technical Committee of the boiler pressure vessel (SAC/TC262) and focal points. This standard was drafted. China Special Equipment Inspection and Research Institute, the State Administration of Quality Supervision, Inspection and Quarantine of Special Equipment Safety Supervision Bureau, CSIC seven hundred twenty-five, Beijing University of Technology, Chinese Academy of safety and environmental protection and technical supervision of PetroChina Southwest Oil and Gas Field, China Petroleum Engineering Design Co., Ltd. Southwest Branch, University of Science and Technology Beijing, Shanghai Quality and Technical Supervision, Sinopec Zhenhai Refining & Chemical Branch, Shenzhen City, burning Gas Group Co., Ltd., Shanghai Institute of Special Equipment Inspection, China Petroleum Daqing Special Equipment Inspection Center, China Petroleum length Daqing oilfield oil one. The main drafters of this standard. Ren Yang, Taoxue Rong, Huang Hui, Yang, Yong, Xu Yang Yun, Liu Long, Zhou Demin, repair the Long March, Comparison of anti Wang Xinhua, Zhoufang Qin, Qin Lin, Shi Dai Yan, Zhang Ping, Li Xiaogang, Wang Shanjiang, Xu Chengyu, Zhong Zhihui, Chen Qiuxiong, Yang Valley, Wuya Bin, single Hongxiang, Li Pei, Zang Guojun. This standard replaces the standards previously issued as follows. --- GB/T 19285-2003. Buried Steel Pipeline Inspection of corrosion protection

1 Scope

This standard specifies the content inspection of buried steel pipeline corrosion protection engineering quality and corrosion protection effect, gives the detection and evaluation method. This standard applies to the process of construction and acceptance of buried steel pipeline corrosion protection project evaluation and detection of corrosion protection system put into use The testing and evaluation.

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. GB/T 21447 outer steel pipeline corrosion control norms GB/T 21448 buried steel pipeline cathodic protection Technical Specifications 3 Terms, definitions and abbreviations 3.1 Terms and Definitions The following terms and definitions apply to this document. 3.1.1 Soil resistivity soilresistivity The average value per unit length of the resistance of the soil, is the characterization of soil conductivity indicators. The unit is Ω · m. 3.1.2 Pipe ground potentialofpipelinetosoil Conduit adjacent electrolyte (soil) potential difference. Note. The engineering staff will generally be "under conditions of cathodic protection tube ground" conventionally called the "protection potential." 3.1.3 Electrode potential electrodepotential In contact with the same electrolyte between the electrode and the reference electrode, the outer circuit voltage measured. 3.1.4 Corrosion potential corrosionpotential Metal corrosion in a given system, the electrode potential. Note. Regardless of whether there is a net current (external) from research into or out of the metal surface, this term applies. 3.1.5 Corrosion potential freecorrosionpotential No net current (external) from research into or out of the metal surface corrosion potential. 3.1.6 Redox potential redoxpotential An inert electrode placed in moist soil containing oxidizing or reducing agent, the potential of establishing equilibrium between its oxidized state and a reduced state. ......

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