Effect of Ballast Water Treatment System By-product on Hull Structural Safety

• Project/Area Number: 23760791
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Naval and maritime engineering
• Research Institution: National Maritime Research Institute
• Principal Investigator: HAYASHIBARA Hitoshi 独立行政法人海上技術安全研究所, 構造系, 研究員 (20511588)
• Project Period (FY): 2011 – 2012
• Project Status: Completed (Fiscal Year 2012)
• Budget Amount: ¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000); Fiscal Year 2012: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000); Fiscal Year 2011: ¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
• 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

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.

Research Products

• [Presentation] オゾン注入によるバラスト水処理装置使用時のタンク内酸素濃度予測 (2012)
  • Author(s): 林原仁志
  • Organizer: 日本船舶海洋工学会平成24年秋季講演会
  • Place of Presentation: 東京大学柏キャンパス
  • Year and Date: 2012-11-26
• [Presentation] オゾン注入によるバラスト水処理装置使用時のタンク内酸素濃度予測 (2012)
  • Author(s): 林原仁志
  • Organizer: 日本船舶海洋工学会 平成24年度秋季講演会
  • Place of Presentation: 東京大学柏キャンパス
• [Remarks]
  • URL: http://www.nmri.go.jp/