Aramco工程标准SAES-X-300 2019海洋结构物阴极保护 Aramco Engineering Standard SAES-X-300 2019 Cathodic Protection of Marine Structures

Previous Issue 24 January 2018 Next Planned Update 11 March 2022 Page 1 of 26 Contact Shahzad, Usman SHAHZAUX on phone 966-13-8808808 Saudi Aramco 2019. All rights reserved. Engineering Standard SAES-X-300 11 March 2019 Cathodic Protection of Marine Structures Document Responsibility Cathodic Protection Standards Committee Contents 1 Scope ............................................................. 3 2 Conflicts and Deviations ................................. 4 3 References ..................................................... 4 4 Definitions and Abbreviations ......................... 6 5 Design Review and Approval ........................ 11 6 General Design Requirements ..................... 13 7 Installation, Records, Commissioning, and Inspection .............................................. 25 Revision Summary ............................................ 25 APPENDIX 1 Coating two plant areas, another cross-country pipeline and a plant area, or between two cross-country pipelines. CSD Consulting Services Department Deep Anode Bed Anode or anodes connected to a common CP power supply installed in a vertical hole typically 25 cm diameter with a depth exceeding 15 m 50 ft.. Design Agency The organization or company contracted by Saudi Aramco for the design of a CP system. The Design Agency may be the Design Contractor, the Lump Sum Turn Key Contractor or an in house design organization of Saudi Aramco. Drain Point The location on the cathodically protected structure where the negative cable from the T/R or negative junction box is fastened to the structure. Electrified / Energized Structure In terms of CP, all offshore structures especially plats where either enough AC power currently available or in the immediate future within 3 years from installation for the operation of ICCP system. Foundry for anodes An anode foundry is a facility that produces metal castings from either ferrous or non-ferrous metals or alloys. Flow-line A pipeline connected to a well. Galvanic Anodes Anodes fabricated from materials such as aluminum, magnesium or zinc that are connected directly to the buried structure to provide cathodic protection Document Responsibility Cathodic Protection Standards Committee SAES-X-300 Issue Date 11 March 2019 Next Planned Update 11 March 2022 Cathodic Protection of Marine Structures Saudi Aramco Company General Use Page 8 of 26 Saudi Aramco 2019. All rights reserved. current without the requirement for an external cathodic protection power supply. Galvanic anodes are also referred to as sacrificial anodes. GOSP Gas and Oil Separation Plant Hazardous Areas Those areas where fire or explosion hazards may exist due to flammable gases or vapors, flammable liquids, combustible dust, or ignitable fibers or filings see NEC Article 500. Hazardous areas when referred to in cathodic protection standards, unless stated otherwise designate Class I Division 2 Zone 2 areas. HAT High Astronomical Tide Level HDD Horizontal Directional Drilled HISC Hydrogen-induced stress cracking is a phenomenon caused mainly by hydrogen embrittlement in the presence of load. Cause of hydrogen embrittlement is associated with the ingress of hydrogen at steel surface due to cathodic polarization. ICCP Impressed Current Cathodic Protection Impressed Current Anodes Anodes fabricated from materials such as High Silicon Cast Iron HSCI or Mixed Metal Oxide MMO that are immersed or buried and are connected to the positive terminal of a DC power supply to provide cathodic protection current. LAT Lowest Astronomical Tide Level Manufacturer The Company that assembles the components for the finished product and provides the finished product either through a Vendor or directly to Saudi Aramco. MIC Microbiological Influenced Corrosion refers to corrosion mechanisms attributed to microorganisms and their by-products. MSAER Mandatory Saudi Aramco Engineering Requirements. Mudline The ocean floor at the location of interest. Nearshore Marine Structures For the scope of this document Other nearshore marine structures are all offshore structures other than plats and subsea pipelines. NEMA National Electrical Manufacturers Association USA Negative Cable A cable that is electrically connected directly or indirectly to the negative output terminal of a cathodic protection power supply or to a galvanic anode. This includes bond cables to a cathodically protected structure. Document Responsibility Cathodic Protection Standards Committee SAES-X-300 Issue Date 11 March 2019 Next Planned Update 11 March 2021 Cathodic Protection of Marine Structures Saudi Aramco Company General Use Page 9 of 26 Saudi Aramco 2019. All rights reserved. Non-electrified / Non-energized Structure In terms of CP, all offshore structures other than electrified. Off-plot Off-plot refers to any area outside of the plot limits. On-plot On-plot refers to any area inside the plot limit. Perimeter Fence The fence which completely surrounds an area designated by Saudi Aramco for a distinct function. Photovoltaic Module A number of solar cells wired and sealed into an environmentally protected assembly. Pipeline The term “pipeline” is used generically in this standard and can be used to refer to any type of pipeline. Plant Area A plant area is the area within the plot limits of a process or storage facility. Scraper traps and launcher areas are not plant areas. Plat An offshore structure used to accommodate oil and gas wells, related production equipment, pipelines, and living quarter. Plot Limit The plot limit is the boundary around a plant or process facility. The plot limit may be physical such as a fence, a wall, the edge of a road or pipe rack, chains, and posts or a boundary indicated on an approved plot plan. Positive Cable A cable that is electrically connected directly or indirectly to the positive output terminal of an ICCP power supply, including impressed current anode cables. PMT Project Management Team used as a truncated version of Saudi Aramco Project Management Team or SAPMT. Process Pipeline A pipeline typically associated with a plant process and typically above ground within a plant facility. Production Pipeline A pipeline transporting oil, gas or water to or from a well. These include flow-lines, test-lines, water injection lines and trunk-lines. Pyramid Anode An offshore anode assembly custom manufactured for Saudi Aramco that is fabricated with mixed metal oxide anode components and placed on the sea bed. The pyramid anode derives its name from the pyramid shaped concrete base. Resistivity Meter Megger A four terminal meter designed to measure ground resistivity, or can be connected to measure resistance in a at that excludes the resistance of the test wires. Document Responsibility Cathodic Protection Standards Committee SAES-X-300 Issue Date 11 March 2019 Next Planned Update 11 March 2022 Cathodic Protection of Marine Structures Saudi Aramco Company General Use Page 10 of 26 Saudi Aramco 2019. All rights reserved. Reference Electrode An industry standardized electrode used as a common reference potential for cathodic protection measurements. A copper/copper sulfate Cu/CuSO4 reference electrode is typically used for soil applications. A silver/silver chloride Ag/AgCl/0.6M Cl reference electrode is typically used for aqueous applications. RSA Responsible Standardization Agent - usually the Saudi Aramco CSD cathodic protection Subject Matter Expert or the Supervisor of the CSD Cathodic Protection Team. SAES Saudi Aramco Engineering Standard SAMSS Saudi Aramco Materials System Specification Soil Transition Point The on grade location where a pipeline enters or exits the soil, i.e., above grade to below grade transition, or below grade to above grade transition. Splash Zone for CP Splash Zone is defined as the zone of an offshore structure that is alternatively in and out of the water because of waves, tides, winds and sea. For details see Section 3.2 of NACE SP0176-2007. SRB Sulphate reducing bacteria, mainly responsible for MIC Microbiological influenced corrosion especially in anaerobic conditions. Stray Current Current flowing through the unintended circuits/paths. Subject Matter Expert SME For the purposes of this standard, the SME shall be the assigned Consulting Services Department cathodic protection specialist. Submerged Zone Surface Area of the marine structure that is always covered with water and extends downwards from the splash zone and includes that portion of the structure below the mudline. Subsea Pipeline A submarine pipeline also known as marine, subsea or offshore pipeline is a pipeline that is laid on the seabed or below it inside a trench. In some cases, the pipeline is mostly on-land but in places it crosses water expanses, such as small seas, straights, and rivers. Surface Anode Bed Anode or anodes connected to a common CP power supply, installed either vertically or horizontally at a depth of less than 15 m 50 ft. A surface anode bed may also be referred to as a Shallow Anode Bed. Tension Spring Anode An offshore anode assembly custom manufactured for Saudi Aramco that is fabricated with mixed metal oxide anode components and suspended on a wire rope/tension spring assembly beneath an offshore plat. Test-line A pipeline that is used for testing an individual well or group of wells. Document Responsibility Cathodic Protection Standards Committee SAES-X-300 Issue Date 11 March 2019 Next Planned Update 11 March 2021 Cathodic Protection of Marine Structures Saudi Aramco Company General Use Page 11 of 26 Saudi Aramco 2019. All rights reserved. Thermite Weld An exothermic process for use in making electrical connections between two pieces of copper or between copper and steel. Transer/Rectifier T/R A CP power supply that transs and converts AC to DC power, often referred to in the cathodic protection industry as a rectifier. Transmission Pipeline A cross country pipeline transporting product between GOSPs WIPs or other process facilities. Trunk-line A pipeline designed to distribute or gather product from two or more wells, typically connecting flow-lines or injection lines to the respective GOSP or WIP. Uncoated Casing The term “uncoated casing” when used in this engineering standard describes a well casing that is either bare no external coating, or may have an external coating applied to the shallow sections of casing to minimize corrosion in the landing base or surface soils. Utilization Factor Utilization factor is a constant value, depending upon the shape of anode and how it is attached, relates to reduction in anode size due to consumption to the minimum size before it ceases to provide the required current output. Utility-line A pipeline designed to deliver a service product typically water, gas or air. Wellhead Plat WHP The plat located above the head of a gas or oil well and use to drill and operate the well. WIP Water Injection Plant 5 Design Review and Approval 5.1 The proposed construction drawings and the related cathodic protection design ination for every design package shall be ted to the CP Proponent organization as defined by GI-0428.001 and to Saudi Aramcos Consulting Services Department CSD for review and approval. Commentary Notes 1 As noted in GI-0428.001, PMT should request assistance from CSD for the verification of the qualifications of the Design Contractors engineer responsible for designing the CP systems. 2 It is recommended that the CP Design Agency hold a pre-design meeting with CSD and the Proponent CP Group to outline the design approach for the Project Proposal and Detailed Design. 5.2 The Design Agency shall not issue drawings for construction until the drawings have been reviewed and approved in writing by CSD and the CP Proponent Document Responsibility Cathodic Protection Standards Committee SAES-X-300 Issue Date 11 March 2019 Next Planned Update 11 March 2022 Cathodic Protection of Marine Structures Saudi Aramco Company General Use Page 12 of 26 Saudi Aramco 2019. All rights reserved. organization. 5.3 Product hardware and software specifications and relevant design ination for all remote monitoring equipment proposed for cathodic protection systems shall be ted to the Supervisor of IT/COD/SCSD Ination Technology/Communication Operations Dept./Satellite Communication Support Div. for review and approval during the Project Proposal and Detail Design phases of the Project. 5.4 The Project Proposal package shall provide all general design considerations that can be developed without requiring measurement of field data. The field data including existing CP system details were available can be provided as an by the PMT team by collecting the same from Proponent. 5.5 The 90 project proposal package shall be ted to the CP Proponent organization and to Saudi Aramcos Consulting Services Department CSD for review and approval. The Project Proposal package should include a. The detailed scope of work / basis of the CP design with reference to project specifications and applicable standards. b. List all Critical CP Designs assumptions, limitations and exclusions clearly. c. Calculations of surface area of the structure to be protected. Commentary Notes 1 Surface area calculations shall be verified by PMT and/or proponent, review and approval of any design packages by CSD is based on verified surface area values provided in the design package. 2 Any change in surface area after CSD approval of CP design package shall be reconsidered by CP Designer / CP Contractor in revised CP Design package and require review and re approval from CSD. d. All design calculations and applicable field data required to verify design compliance with Saudi Aramco Cathodic Protection Engineering Standards. e. Professionally drafted full size Index “X” CP drawings that Detail each CP item by description and stock number if applicable Detail the proposed location for each piece of CP equipment including but not limited to T/Rs, anodes, junction boxes and test stations Detail and specifically identify all cathodic protection cables including all anode, structure, bond, and T/R cables Clearly identify the specific and individual cable routing and termination Document Responsibility Cathodic Protection Standards Committee SAES-X-300 Issue Date 11 March 2019 Next Planned Update 11 March 2021 Cathodic Protection of Marine Structures Saudi Aramco Company General Use Page 13 of 26 Saudi Aramco 2019. All rights reserved. points within the respective junction boxes, bond boxes, and T/Rs Detail all cathodic protection equipment using the cathodic protection symbols shown on Standard Drawing AD-036785 “Symbols for Cathodic Protection” f. All details for the Remote Monitoring System including details