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Study on Cathodic Protection Principles and Requirements of Underground Steel Pipes (Concept and Laboratory/model Scale)

Ab. Ghani, Mohamad Fadhly (2004) Study on Cathodic Protection Principles and Requirements of Underground Steel Pipes (Concept and Laboratory/model Scale). Universiti Teknologi Petronas. (Unpublished)

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Abstract

The objective of this project is to study the cathodic protection principle and requirements of underground steel pipes by using concept and laboratory experiments. Cathodic protection (CP) is a means of preventing a metallic object which is either buried in the ground or immersed under water from corrosion. It is basically an electro-chemical process. In understanding CP, basic knowledge about several subjects, chemistry, electricity, metallurgy and mathematics will be required. The basic principal of CP is to turn a metals surface into a cathode (cathodic), hence the name cathodic protection. A metals surface, buried or immersed, can contain anodic and cathodic areas, corrosion only occurs at the anodic areas, therefore if a metal objects surface can be turned into a cathode over its entire surface, then corrosion can be prevented on the metallic structure. Corrosion is not actually eliminated; it is moved to a known location by adding an anode which is designed to slowly corrode in a controlled manner, thus leaving the intended metallic structure intact. In order to achieve the objectives, project planning using Gantt chart has been developed. It started with Literature Study mainly on the underlying theories of cathodic protection principles. Experiment will then be conducted to: 1. Test severalpossible sacrificial anodes and select the most suitable one. 2. Test the efficiency of cathodic protection on buried steel pipe using the chosen alloy as the sacrificial anode. The result will then be compared to the buried steel pipe without cathodic protection (in terms of corrosion rate). Cathodic protection is a promising corrosion inhibitor with the advantages such as cut maintenance expense, cut replacement costs, decrease laborcosts, stop rust and corrosion, less expensive than coatings, and easy to install.

Item Type: Final Year Project
Academic Subject : Academic Department - Mechanical Engineering - Materials - Advanced engineering materials - Processings and applications of metals alloys
Subject: T Technology > TJ Mechanical engineering and machinery
Divisions: Engineering > Mechanical
Depositing User: Users 2053 not found.
Date Deposited: 09 Oct 2013 11:08
Last Modified: 25 Jan 2017 09:46
URI: http://utpedia.utp.edu.my/id/eprint/8694

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