GB/T 36676-2018 English PDF

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GB/T 36676-2018: External inspection methodology of stress corrosion cracking (SCC) for buried steel pipelines
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Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 36676-2018	519	Add to Cart	5 days	External inspection methodology of stress corrosion cracking (SCC) for buried steel pipelines	Valid

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Basic data

Standard ID: GB/T 36676-2018 (GB/T36676-2018)
Description (Translated English): External inspection methodology of stress corrosion cracking (SCC) for buried steel pipelines
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: E16
Classification of International Standard: 23.040.01
Word Count Estimation: 26,230
Date of Issue: 2018-09-17
Date of Implementation: 2019-04-01
Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration

GB/T 36676-2018: External inspection methodology of stress corrosion cracking (SCC) 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.
External inspection methodology of stress corrosion cracking(SCC) forburied steel pipelines ICS 23.040.01 E16 National Standards of People's Republic of China Buried steel pipeline stress corrosion cracking (SCC) External detection method Published on.2018-09-17 Implementation of.2019-04-01 State market supervision and administration China National Standardization Administration issued

Content

Foreword I 1 Scope 1 2 Normative references 1 3 Terms and Definitions 1 4 General 2 5 Data Collection 2 6 SCC sensitive factor analysis 3 7 SCC Position Prediction 3 8 Excavation test 4 9 Assessment and Disposal 4 10 Records and reports 6 Appendix A (informative) Data collection 8 Appendix B (Normative) SCC Sensitivity Analysis and Assessment 10 Appendix C (informative appendix) Method for determining SCC sensitive potential interval in soil environment 15 Appendix D (informative) Experimental method for determining the crack growth rate of SCC pipe sections 17 Appendix E (informative appendix) Prediction method for crack growth rate of SCC pipe segments under alternating load 19 Reference 23

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 was drafted. China Special Equipment Inspection and Research Institute, Beijing University of Science and Technology, China University of Petroleum (Beijing), Sinopec Sales Company, China National Petroleum Corporation Pipeline Branch, China Petroleum & Chemical Corporation Natural Gas Branch, Sinopec Long-distance Oil and Gas Pipeline Testing Co., Ltd., Chongqing Special Equipment Testing and Research Institute, Sinopec Sales Co., Ltd. South China Branch, China Stone Oil Engineering Construction Co., Ltd. Southwest Branch, China National Petroleum Corporation Changqing Oilfield Branch, China National Petroleum Corporation Tarim Oilfield Branch, Shenzhen Gas Group Co., Ltd., Fujian Special Equipment Inspection and Research Institute, Guangdong Dapeng Liquid Natural Gas Co., Ltd., Shanghai Jinyi Testing Technology Co., Ltd., PetroChina Eastern Pipeline Co., Ltd. The main drafters of this standard. Xiu Changzheng, Wang Junqiang, Wang Haitao, Li Xiaogang, Liu Zhiyong, Shuai Jian, Shao Shanshan, Bu Wenping, Feng Qingshan, Zong Zhaofeng, Xue Zhenglin, Wu Xiaoyang, Wang Weidong, Jiang Fang, Chen Vana, Lu Hongwei, Li Xianming, Zhou Demin, An Chengming, Wu Linjun, Li Yuhua, Liang Qiang, Wan Xin, Liu Qing, Li Yan. Buried steel pipeline stress corrosion cracking (SCC) External detection method

1 Scope

This standard specifies the external detection method for stress corrosion cracking (SCC) of buried steel pipelines, including data collection and SCC sensitive factors. Analysis, SCC position prediction, excavation detection, assessment and disposal, recording and reporting. This standard is applicable to buried steel pipelines in long-distance pipelines, gathering pipelines and public pipelines. Other buried steel pipelines can be referred to. The relevant provisions of this standard are implemented. This standard is only applicable to stress corrosion cracking caused by the external environment of buried steel pipelines, and is not suitable for stress corrosion caused by conveying medium. Eclipse cracking.

2 Normative references

The following documents are indispensable for the application of this document. For dated references, only dated versions apply to this article. Pieces. For undated references, the latest edition (including all amendments) applies to this document. GB/T 19285 buried pipeline corrosion protection engineering inspection GB/T 19624 Safety assessment of pressure vessels containing defects GB/T 24196 Corrosion Electrochemical Test Methods for Metals and Alloys - Guide to Constant Potential and Potent Potential Polarization Measurements GB/T 27699 Steel pipe inspection technical specification GB/T 27921 Risk Management Risk Assessment Technology GB/T 30582 Risk-based inspection and evaluation of external damage of buried steel pipelines GB 32167 Specification for the integrity management of oil and gas pipelines NB/T 47013 Non-destructive testing of pressure equipment TSGD7003 Pressure Pipeline Inspection Rule - Long Distance Pipeline TSGD7004 Pressure Pipeline Inspection Rule - Utility Pipeline

3 Terms and definitions

The following terms and definitions apply to this document. 3.1 Stress corrosion cracking stresscorrosioncracking; SCC Cracking caused by the combination of tensile stress and corrosive environment of metallic materials. 3.2 High pHSCC highpHstresscorrosioncracking A form of stress corrosion cracking of a buried pipeline caused by an external alkaline electrolyte environment. Note. The crack appears as cracking along the crystal and has a distinct bifurcation. 3.3 Near-neutral pHSCC nearneutralpHstresscorrosioncracking A form of stress corrosion cracking of a buried pipeline caused by an external near-neutral pH electrolyte environment. Note. Cracks generally appear as transgranular cracking, less bifurcation, corrosion at the crack or pipe surface. ......

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