PurposeThe purpose of this paper is to describe a method for the prompt intervention and remediation of tanker wrecks, for recovering the fuel trapped in their tanks.Design/methodology/approachThe environmental conditions, the functional specifications, the conceptual and preliminary design, the computational methods (fluid/structure interaction, computational fluid dynamics analysis and finite element analysis), the hydrodynamic scale model tests and the dynamic response analysis are included in this research paper.FindingsThe paper provides analytical and numerical tools for the response of subsea structures. These tools were calibrated by hydrodynamic scale model tests and extrapolated for different depths (shallow, deep water and ultra deep water).Research limitations/implicationsThe method is applicable as long as the trapped pollutant does not dissolve and is of lower density than the sea water.Originality/valueThis paper presents a new structure for the oil recovery from shipwrecks, which is simple and quickly deployed.
A method for the prompt and cost-effective intervention and remediation of tanker wrecks dealing with eventual leaks and recovering the fuel trapped in their tanks, even at considerable depths, is described. The method is of general applicability as long as the trapped pollutant does not dissolve and is of lower density than sea water. It relies on gravity to channel the flow of spilt fuel towards the surface. Instead of channeling the flow directly to the surface, the fuel-water mix is directed to a buffer reservoir/separator some 30–50 m below the sea surface so as not to be affected by rough weather. This is achieved by means of a light, quickly deployable flexible structure that should stay in place until all the tanks of the wreck are emptied and the pollution threat eliminated. The buffer reservoir, into which the spilt fuel is channelled, is provided with standard equipment through which shuttle vessels, weather permitting, can recover the fuel rapidly, using standard off-shore equipment and procedures.
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