海洋構造物の保守管理技術(浮遊式海洋構造物の実海域実験その2 研究報告)

概要

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Experimental investigations into inspection and maintenance of offshore structure were carried out, using a floating offshore structure POSEIDON. Surface of eleven columns out of twelve and a part of side wall of deck house of POSEIDON were carefully coated by experimentally specified heavy duty paints. During four-year operation of POSEIDON, changes of plate thickness and coating film characteristics were observed. Amount and species of marine fouling animals on coating surfaces around submerged parts of columns were also measured and observed. After the end of experimental operation, POSEIDON was broken, in order to make thorough investigation of welded joint parts and paint coated parts of columns and deck house wall. Conclusions obtained are as following; 1. In order to maintain safety operation of offshore structures, proper maintenance and repair should be performed. Choice of maintenance system should be made at initial stage of structural design. 2. For proper maintenance of offshore structure, initial conditions and values of structural details such as penetration of weld joint metals, properties of paint coating and local deformations of structural parts are to be measured before operation.
独立行政法人海上技術安全研究所の論文
1994-12-28