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عنوان فارسی مقاله:

خوردگی الکترولیتی سیستم خط لوله آب در فاصله از راه دور جریان منحرف - مورد مطالعه


عنوان انگلیسی مقاله:

Electrolytic corrosion of water pipeline system in the remote distance from stray currents—Case study


سال انتشار : 2016



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مقدمه انگلیسی مقاله:

1. Introduction

Corrosion processes occurring on the outer surface of underground pipelines in the cities is not only a general corrosion process, where corrosion microcells equally covers the surface of corroding metal. On the surface of the pipeline may also arise corrosion macrocells [1–4] in which cathodic and anodic areas on the metal surface can be spaced apart by severaltens or even hundreds of meters. Galvanic corrosion (bi-metal corrosion) [5] is an example of corrosion macrocells (created by electrical contact between two different metals, for instance: pipeline and fittings of another metal), differential oxygen corrosion [6] (produced by varying the diffusion of oxygen to the adjacent pipeline sections, for example: in the transition under way and beside the road), concentrationcells (differential concentrationcorrosion)[7] (the transition pipeline by soilwith varying levels of dissolved salts or by different types of soil). The impact of stray currents on pipelines is extremely dangerous, the source of such are tram and rail tractions powered by direct current(DC)[8,9].Thestraycurrents areoneofthemost commoncausesofpipeline corrosionfailureinthecities [10].This resultin leaks of media flow (DHW, heating water, gas, oil), outages of media to customers and high costs of repair [11,12]. Since the cathodic and anodic zones on the pipeline are arising as a result of mentioned above interactions,the damage can be spaced



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کلمات کلیدی:

Pipeline transport - Wikipedia https://en.wikipedia.org/wiki/Pipeline_transport Pipeline transport is the transportation of goods or material through a pipe. The latest data, in ... Pipelines are useful for transporting water for drinking or irrigation over long distances when it needs to move over ..... it also has to cover all the work related to the installation of the field devices that will support remote operation. Architectural Graphic Standards for Residential Construction https://books.google.com/books?isbn=0470395834 Dennis J. Hall, ‎Nina M. Giglio, ‎American Institute of Architects - 2010 - ‎Architecture Factors affecting design of a public water main: it is necessary to obtain the ... water pressure in the water main is critical to the design of the water supply system. ... delivered to the most remote fixture within an acceptable range of pressures. Improving the Safety of Marine Pipelines https://books.google.com/books?isbn=0309595401 Committee on the Safety of Marine Pipelines, ‎Marine Board, ‎Commission on Engineering and Technical Systems - 1994 - ‎Science or fully processed product (i.e., separate lines for gas, oil, and water) to other ... Which platforms are tied in to a given pipeline system is determined mainly by ... line (longer distances, multiple injections, and remote personnel) or a production ... [PDF]DNV Ship rules Pt.4 Ch.6 - Piping Systems - Rules and standards https://rules.dnvgl.com/docs/pdf/DNV/rulesship/2013-01/ts406.pdf K500 and K600: Sounding pipe requirements have been clarified. • Sec.5 Ship Piping System. — D308: Requirement for design pressure of fuel oil systems revised to comply with ..... E 200 Spaces other than cargo spaces fitted with automatic water sprinkler systems. .... J. Remotely Controlled Bilge and Ballast Systems . Remote watering sites far from water source - Agriculture and Agri ... www.agr.gc.ca/.../water/...watering/water-systems-for-range.../remote-watering-sites-f... Jump to Pipelines for watering range livestock - If there is a reliable water and power source within a ... A farmer installing a pipeline system. Polar prospects : a minerals treaty for Antarctica. https://books.google.com/books?isbn=1428922326 For example, considerable research is underway on remote control systems for ... moved long distances before it is necessary to provide a large separation facility. ... through use of improved ice-operating tankers, deep-water pipeline systems, ...