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Delivery: <= 7 days. True-PDF full-copy in English will be manually translated and delivered via email. GB/T 35988-2018: Cathodic protection of offshore pipeline in petroleum, natural gas industries Status: Valid
Basic dataStandard ID: GB/T 35988-2018 (GB/T35988-2018)Description (Translated English): Cathodic protection of offshore pipeline in petroleum, natural gas industries Sector / Industry: National Standard (Recommended) Classification of Chinese Standard: E98 Classification of International Standard: 75.200 Word Count Estimation: 46,477 Date of Issue: 2018-02-06 Date of Implementation: 2018-09-01 Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration GB/T 35988-2018: Cathodic protection of offshore pipeline in petroleum, natural gas industries---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.Cathodic protection of offshore pipeline in petroleum, natural gas industries ICS 75.200 E98 National Standards of People's Republic of China Oil and gas industry submarine pipeline cathodic protection (ISO 15589-2.2012,Petroleum,petrochemicalandnaturalgasindustries- Part 2. Offshorepipelines,NEQ) Published on.2018-02-06 2018-09-01 Implementation General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China China National Standardization Administration released Directory Preface I 1 Scope 1 2 Normative references 1 3 Terms, definitions and abbreviations 1 4 Cathodic Protection System Requirements 3 5 Design Parameters 4 6 Sacrificial anode 9 7 Sacrificial Anode Manufacturing 11 8 Sacrificial anode quality control 13 9 Sacrificial Anode Mount 16 10 Impressed Current Cathodic Protection System 17 11 Document 18 12 Cathodic protection system operation, monitoring and maintenance 19 Appendix A (Normative) Sacrificial Anode Cathodic Protection System Design Procedure 20 Appendix B (normative) Cathodic protection attenuation 25 Appendix C (Normative Appendix) Performance Test of Sacrificial Anode Materials 28 Appendix D (Normative Appendix) Cathodic Protection Monitoring and Inspection 30 Appendix E (Normative Appendix) Laboratory Tests for Electrochemical Performance of Sacrificial Anodes 35 Appendix F (Informative) Interference 37 Appendix G (Informative) Cathodic Protection Design for Pipes 39 ForewordThis standard was drafted in accordance with the rules given in GB/T 1.1-2009. This standard uses the redrafted reference to ISO 15589-2.2012 "The Cathode Protection of Submarine Pipeline Transportation System in the Petroleum, Petrochemical and Natural Gas Industry. Protection of Part 2. Submarine Pipelines, prepared in accordance with ISO 15589-2.2012, is non-equivalent. This standard is proposed and managed by the National Oil and Gas Standardization Technical Committee (SAC/TC355). This standard was drafted by. CNOOC Research Institute. The main drafters of this standard are. Chang Wei, Yu Xiaoyi, Tian Yongqin, Hu Lihua, Yu Hao, and Jia Xu. Oil and gas industry submarine pipeline cathodic protection1 ScopeThis standard specifies the pre-investigation, design, materials, equipment, manufacture, and installation of the cathodic protection system for the submarine pipelines in the petrochemical and natural gas industries. Technical requirements and recommended practices for commissioning, operation, inspection and maintenance. This standard is applicable to the design and renovation of carbon steel pipes, stainless steel pipes, flexible pipes and riser sections below the average water level in seawater or seabed. And repair.2 Normative referencesThe 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 version (including all amendments) applies to this document. GB/T 1499.1 Steel for reinforced concrete - Part 1. Hot-rolled polished steel bar GB/T 8923.1 Preparation of steel before application of paint. Visual assessment of surface cleanliness. Part 1. Uncoated steel Corrosion grades and treatment levels of steel surfaces after surface and full removal of the original coating GB/T 13912 Technical requirements and test methods for hot-dip galvanized steel parts of metal-clad steel parts GB/T 15169 steel melt welding welder skills assessment GB/T 17848 sacrificial anode electrochemical performance test method GB/T 19866 Welding Procedure Specification and General Principles of Evaluation GB/T 21448 Technical Specification for Cathodic Protection of Buried Steel Pipes GB 50661 steel structure welding specification 3 Terms, definitions and abbreviations 3.1 Terms and Definitions The following terms and definitions as defined in GB/T 21448 apply to this document. For ease of use, the following repeatedly lists the GB/T 21448 Some of the terms and definitions. 3.1.1 Anode potential anodedepotential The voltage measured at the external circuit between the anode and the reference electrode in contact with the same electrolyte. 3.1.2 Anode stack anodesled A sacrificial anode assembly that is mounted directly on the structure or connected to the pipeline by a cable. 3.1.3 Anode Closed Circuit Potential closed-circuitanodepotential The potential at which the anode is electrically connected to the protected pipe. 3.1.4 Coating breakdown factor The ratio of the polarization current density of the steel coating surface to the bare steel surface. ...... |
