Cathodic protection by sacrificial anodes or impressed current, comparative analysis
Cathodic protection represents a widely spread method for controlling the corrosion of metallic structures in contact with various environments, such as soils and seawater, containing enough ions to conduct electricity. The principle of cathodic protection consists of controlling the corrosion rate of a metallic structure by reducing its corrosion potential, bringing the metal closer to an immune state. This could be achieved by two main ways: using a sacrificial anode or using an impressed current. The main difference between the two methods is that the impressed current cathodic protection uses an external power source with inert anodes while the sacrificial anodes cathodic protection uses the naturally occurring electrochemical potential difference between different metallic elements to provide protection. The paper’s aim is to realize a comparative analysis of these methods with regard to their benefits, features and also to the economic point of view. Another aspect presented is the way the cathodic protection system differs for the commercial ships to the special purpose vessels - Floating Production Storage and Offloading - which, regardless of their shape which still looks like a ship, have special requirements regarding the corrosion protection.
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Availability:
- Find a library where document is available. Order URL: http://worldcat.org/issn/15823601
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Supplemental Notes:
- Abstract used by permission of publisher.
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Authors:
- Acomi, Nicoleta
- Acomi, Ovidiu
- Publication Date: 2013
Language
- English
Media Info
- Media Type: Digital/other
- Features: Figures; Photos; References; Tables;
- Pagination: pp 13-16
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Serial:
- Constanta Maritime University Annals
- Volume: 19
- Publisher: Constanta Maritime University
- ISSN: 1582-3601
- Serial URL: https://cmu-edu.eu/annals/
Subject/Index Terms
- TRT Terms: Alternatives analysis; Cathodic protection; Corrosion protection; Floating structures; Merchant vessels; Offshore support vessels; Sacrificial anodes; Ships
- Candidate Terms: Seawater corrosion
- Subject Areas: Maintenance and Preservation; Marine Transportation; I61: Equipment and Maintenance Methods; I94: Vehicle Corrosion;
Filing Info
- Accession Number: 01523968
- Record Type: Publication
- Files: TRIS
- Created Date: May 1 2014 11:43AM