With many gas fields exploited in the North Adriatic sea about to get exhausted, offshore platform decommissioning is become a more and more pressing issue. On one hand, the process of decommissioning is very expensive; on the other hand there are interesting opportunities to be explored for reuse of a portion or all of the 60s offshore facilities located in front of the Emilia Romagna coasts for other purposes besides gas extraction. In the present study we present a screening environmental assessment of the re-conversion and reuse of North Adriatic offshore platforms. The analysis has been performed at two levels: The first one corresponds to what prescribed under Environmental Impact Assessment (EIA) legislation (EU Directives 85/337/EEC and 97/11/EC): in this case, the analysis has been performed with specific reference to two off-shore platforms to be converted into the allegedly most profitable alternatives, namely off shore fish farming and eolic energy generation respectively. While general assessment has been performed on the basis of qualitative consideration, the issue of organic waste has been investigated by means of a spatially explicit simulation model of nutrient dispersion in the water column under different assumption about water depth, water flow speed, type and size of the feeding material. Simple guidlines to reduce or possibly avoid the impact negative of both fish farming and wind energy generation has been also produced in the current study. The second level of analysis corresponds to what recommended under the Strategic Environmental Assessment (SEA) Directive 2001/42/EC and the Kiev Protocol on SEA (2003): in this case, we intend to assess the aggregated impact of re-conversion of a subset of 31 platforms in the north Adriatic sea. An heuristic approach has been used to identify a set of sub-optimal alternative layout of configuration of the platforms. This methods proves to be greatly helpful to streamline the decision-making process.

ENVIRONMENTAL ISSUE RELATED TO THE REUSE OPTIONS OF NORTH ADRIATIC OFFSHORE PLATFORMS

ABBIATI, MARCO;
2007

Abstract

With many gas fields exploited in the North Adriatic sea about to get exhausted, offshore platform decommissioning is become a more and more pressing issue. On one hand, the process of decommissioning is very expensive; on the other hand there are interesting opportunities to be explored for reuse of a portion or all of the 60s offshore facilities located in front of the Emilia Romagna coasts for other purposes besides gas extraction. In the present study we present a screening environmental assessment of the re-conversion and reuse of North Adriatic offshore platforms. The analysis has been performed at two levels: The first one corresponds to what prescribed under Environmental Impact Assessment (EIA) legislation (EU Directives 85/337/EEC and 97/11/EC): in this case, the analysis has been performed with specific reference to two off-shore platforms to be converted into the allegedly most profitable alternatives, namely off shore fish farming and eolic energy generation respectively. While general assessment has been performed on the basis of qualitative consideration, the issue of organic waste has been investigated by means of a spatially explicit simulation model of nutrient dispersion in the water column under different assumption about water depth, water flow speed, type and size of the feeding material. Simple guidlines to reduce or possibly avoid the impact negative of both fish farming and wind energy generation has been also produced in the current study. The second level of analysis corresponds to what recommended under the Strategic Environmental Assessment (SEA) Directive 2001/42/EC and the Kiev Protocol on SEA (2003): in this case, we intend to assess the aggregated impact of re-conversion of a subset of 31 platforms in the north Adriatic sea. An heuristic approach has been used to identify a set of sub-optimal alternative layout of configuration of the platforms. This methods proves to be greatly helpful to streamline the decision-making process.
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M. Abbiati; S. Maccaferri; G. De Leo; M. Parelli; L. Bruzzi; G. Dominici; A. Fatone; L. Lontani; S. Verità
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11585/73298
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