2012 Fiscal Year Final Research Report
Effect of Ballast Water Treatment System By-product on Hull Structural Safety
| Project/Area Number |
23760791
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Multi-year Fund |
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| Research Field |
Naval and maritime engineering
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| Research Institution | National Maritime Research Institute |
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Principal Investigator |
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| Project Period (FY) |
2011 – 2012
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| Keywords | 腐食防食 / バラストタンク / 塗膜劣化 / 塗膜下腐食 / 酸素濃度 |
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| Research Abstract |
O_2 concentration which is injected to ballast water with ozone gas was evaluated, and O_2 concentration of ballast tank shortly after ballasting was predicted by calculation and model experiment. Coating degradation test was carried out under normal O_2 concentration (20.9%) and high O_2 (30%) concentration humid condition respectively. Testing temperature was set to 343K as accelerating condition. Effect of O_2 concentration was evaluated after 65days testing. The obvious difference between normal and high O_2 condition was not found.
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