Managing UXO Risk in Offshore and Renewables Projects

Managing UXO Risk in Offshore and Renewables ProjectsAn article by Mattijs de Lange of Seaknowledge in Hydro International, updated in July, addresses the critical importance of a comprehensive UXO survey strategy in advance of building offshore marine infrastructure such as gas distribution or renewable energy projects in northwestern European waters. Delays caused by dealing with unexpected UXO can incur cost increases of tens of millions of euros to a project; not to mention the safety aspect. The author says such surveys should be an integral part of the FEED (Front End Engineering and Design) stage of projects.

The article discusses how UXO risk mitigation must be cost-effective, using the ALARP concept (As Low as Reasonably Practical). The ALARP principle dictates that the residual risk after mitigation must be minimized. Theoretically, for a risk to be ALARP it should be demonstrated that the cost involved in further reducing the risk is disproportional to the benefits gained. The five phases are detailed and discussed: desktop study and risk identification, investigation surveys, identification surveys, UXO removal and/or construction re-routing, and installation.

The author references the Earth Explorer article Academics and industry team up for UXO surveys, where Geosoft UXO software was employed in similar marine UXO projects.

Read the full article published on Hydro International.

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