The Influence Of Coating Damage On The ICCP
Cathodic Protection Effect
Author(s)
J. Wu, S. Xing & F. Yun
Abstract
A one/hundredth scale hull model in linear scaled resistivity was used to
simulate the cathodic protection potential distribution of a hull with different
coating damage extent and position. The potential distribution of the hull was
simultaneously measured by a PXI modular instrument and program written by
Labview 7.1. At the same time, the potential and current density of the vessel
with damage of 2%, 4% and 6% were calculated by the boundary element
method (BEM). The results obtained from the physical scale model (PSM)
method had agreement with the calculation results. The impressed current
cathodic protection (ICCP) protection effect and its induced electric signature
were simultaneously influenced by the coating damage extent and position. The
damage extent mainly influenced the ICCP output current and the x axis’ electric
signature; the damage position mainly influenced the electric signature of the y
axis. Calculation results show that the electric signature increased about 35.7%
due to coating damage of 6%.
Keywords: cathodic protection, physical scale model, computer simulation,
electric signature.
Keywords
cathodic protection, physical scale model, computer simulation,
electric signature
Related Book
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