침몰선 잔존유 회수 표준화에 관한 연구

Abstract

Abstract

As catastrophic oil spills in past 2 decades like Tanker Exxon Valdez & Prestige took place, significant measures for prevention, preparedness and response against large spill were taken by international organization and maritime developed countries such as OPA 90, OPRC 90 and Supplementary Fund etc. Likewise spill response technique and policies were improved and relevant R&D were conducted in Korea experiencing large spill like Tanker Sea Prince and Hebei Spirit. These improvements and R&D, however, were mostly about on-water and onshore response. Meantime, tens of vessel sank every year due to marine accidents in korean coastal waters, of which only a few sunken vessels were lifted. But there may exist threat of oil leakage from those vessels at all times caused by rupture of cargo tanks and diffusion, also oil spill could occur in the process in case of removal of remaining oil onboard the wrecks. The latter requires professional technique & measure for successful performance, accordingly the author attempts to design and suggests a standardization model for safe, effective and efficient removal of remaining oil from the wreck against possible spill accidents investigating wreckage status, previous remaining works and modelling with various factors.

It is found that 60 vessels approximately sank per year in korean coastal water, 87% of those vessels were fishing vessels and 40% took place in South Sea. And removal works of remaining oil were recently done to 3 vessels, No.1 Yoo-Il, No.3 Oh-Sung and Kyung-Shin. With the investigation of working time(lapse time from beginning to end) of them, the case of Kyung-Shin were only one-third of the other two case.

As a result of modelling with various factors applied to the Kyung-Shin, it was proven that the removal work could be accomplished by scrupulous plan considering water environment(wind, current, water temperature, bottom property, depth), proper working method, selection of appropriate equipments, preparation for possible spill accident including floating time of oil particles, slicks trajectories both in water and surface, mobilization of response resources, response options, action plan for on-water and onshore cleanup.

Since this study presents the simple model of standardization of removal of remaining oil, the author will continue to study for making more improved and detailed model.