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GB/T 34350-2017 English PDF

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GB/T 34350-2017: External inspection methodology for internal corrosion of liquid petroleum pipelines
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PDF similar to GB/T 34350-2017


Standard similar to GB/T 34350-2017

GB/T 26978   GB/T 38753   SY/T 0520   GB/T 34349   GB/T 34346   

Basic data

Standard ID GB/T 34350-2017 (GB/T34350-2017)
Description (Translated English) External inspection methodology for internal corrosion of liquid petroleum pipelines
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard E29
Classification of International Standard 23.040.01
Word Count Estimation 30,374
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 34350-2017: External inspection methodology for internal corrosion of liquid petroleum pipelines


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External inspection methodology for internal corrosion of liquid petroleum pipelines ICS 23.040.01 E29 National Standards of People's Republic of China Oil pipeline corrosion testing methods 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 Preface Ⅰ 1 Scope 1 2 Normative references 1 3 Terms and definitions 1 4 General 2 5 Data Collection 3 6 Corrosion location prediction 4 7 excavation test 7 8 detection cycle to determine 9 9 Record and report 9 Appendix A (Informative) Pipeline Prediction 11 Appendix B (Informative) Determination of wettability 17 Appendix C (Informative) Solid impurities accumulation prediction 18 Appendix D (Informative) Pipeline corrosion testing corrosion location prediction application example 21 References 26

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 unit. China Special Equipment Inspection Institute, Xi'an Jiaotong University, China Petroleum and Chemical Corporation branch Maoming Division, Sinopec Sales Co., Ltd., Sinopec Pipeline Storage and Transportation Co., Ltd., Sinopec Shanghai Petrochemical Co., Ltd., China Stone Oil and Gas Co., Ltd. Changqing Oilfield Branch third oil, PetroChina Changqing Oilfield Branch No. An oil department, China Petroleum & Chemical Corporation Shanghai Gaoqiao Branch, China Petrochemical Co., Ltd. Baling Branch, Shanghai Petrochemical Co., Ltd. Public Utilities Company, China National Petroleum Co., Tarim Oilfield Branch, China National Petroleum Natural Gas Co., Ltd. Qinghai Oilfield Branch, China National Petroleum Corporation Changqing Oilfield Branch Oilfield Development. The main drafters of this standard. Meng Tao, Ma Honglian, He Yan Yang, Wang Yue Society, Li Xueyong, Bu Wenping, Zhang Huimin, Wu Haidong, Jin Qiang, Li Baorong, Zhang Jianchang, Li Pei, Gu Xuedong, Cai Jianping, Shaoshan Shan, He Jun, Yang Hui, Gu Weimin, Zhang Zhong Fang, Ma Xiaobin, He Yi. Oil pipeline corrosion testing methods

1 Scope

This standard specifies the contents, methods and procedures for testing corrosion outside the buried steel pipelines, including general principles, data collection, corrosion location Forecasting, excavation testing, testing cycle determination, recording and reporting, and appendices. This standard applies to the full flow of liquid petroleum pipe. Ground laying oil pipeline corrosion testing can refer to this standard carried out.

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 revisions) applies to this document. GB/T 19285 buried steel pipeline corrosion protection engineering inspection GB/T 19624 Safety assessment of pressure vessels with defects Risk - based inspection and evaluation of the damage of buried steel pipelines TSGD7003 pressure pipe regular inspection rules --- long-distance (oil and gas) pipe

3 Terms and definitions

The following terms and definitions apply to this document. 3.1 Pipeline corrosion testing outsideinspectionforpipelineinternalcorrosion Methods of detecting corrosion on the inner wall of pipeline from the outside of the pipeline include data collection, prediction of corrosion location, excavation inspection and Detection cycle to determine such steps. 3.2 Inspection section inspectionregion Carrying out the detection of oil pipelines with internal corrosion, the fluid characteristics, corrosion inhibitor measures and other chemical treatment did not change significantly Continued pipeline (including weld), the same section has similar physical characteristics and operating parameters. 3.3 Oil-water dispersed flow oil-waterdispersedflow A flow pattern of oil-water multi-phase flow, that is, the oil and water phases flow in a uniformly stable oil-water emulsion. 3.4 Oil-water stratified flow oil-waterstratifiedflow A fluid state of multiphase flow of oil and gas, that is, a fluid that can be divided into layers by the flow of a light fluid (oil phase) floating on a heavier fluid (water phase). 3.5 True water speed Vwi Average velocity of bottom water in stratified flow of oil and water.

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