WEAR INDICATOR SYSTEM FOR OFFSHORE ANTICORROSIVE COATING SYSTEM

摘要

PROBLEM TO BE SOLVED: To develop a wear indicator system for an offshore anticorrosive coating system capable of evaluating highly reliably an anticorrosive means, without requiring a person coming periodically to an offshore structure.SOLUTION: A subordinate layer is formed to detect an optical signal or an electric signal when a single or a plurality of layers positioned in a rank higher than the subordinate layer is damaged, in a metal pipe having an anticorrosive coating including the superordinate layer and the subordinate layer of at least two layers.