The DACS physical scale modelling technique has previously been employed to study a stylised representation of a ship hull with propellers alone. As the presence of non-ferrous material is a major factor determining the distribution of ICCP over a steel structure, the present study has examined design criteria for protection when there is a second bronze mass. Results suggest that the location of such material is more important than its surface area. Potential profiles produced by various ICCP configurations show that a single-zone system cannot protect a structure when there is more than one area of non-ferrous material, particularly in simulated under-way conditions. The required number of ICCP control zones is related to the number of non-ferrous areas. DACS modelling can determine the location of reference electrodes and anodes required for effective protection. Stylised modelling is required for the development of longer-term design criteria, and detailed models should be employed for the design of ICCP configurations for specific types of ship and other marine structures.
Study of design criteria for ship impressed-current cathodic protection by stylised modelling
Untersuchung von Entwurfskriterien fuer den kathodischen Schutz von Schiffen durch Fremdstrom mittels Modellbetrachtungen
Corrosion Prevention and Control ; 37 , 1 ; 5-11
1990
7 Seiten, 12 Bilder, 3 Quellen
Article (Journal)
English
Ship impressed current cathodic protection - design considerations
British Library Conference Proceedings | 1997
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