This paper will discuss the decommissioning concept that is being advocated in Europe, in particular, the need to use Life Cycle Assessment (LCA)-based methodology as a tool for decision-making. LCA methodology comprises: goal and scope definition, inventory analysis, impact assessment and interpretation including options/proposals for the decision-making process. Energy and raw materials consumption as well as any emission into air, water, soil will be subject for the impact assessment and the subsequent interpretation. For the purpose of comparing the different options on decommissioning (e.g. disposal at sea/recycling and re-use onshore) of offshore installations, selected life stages (e.g. raw materials' sourcing, processing, manufacturing of the installation and decommissioning options) will be evaluated. The results of this LCA-based assessment can be used for those categories of offshore installations which are still subject for case-by-case decisions for a possible disposal at sea or alternative onshore treatment, including the recycling and/or re-use. Furthermore, LCA could assist in the development planning of offshore installations by indicating those life stages and processes where possible improvement/optimization with respect to energy/raw material consumption, installation/de-installation processes and reduction of emissions can be achieved.
Life cycle assessment - development planning through decommissioning
1997
12 Seiten, 23 Quellen
Conference paper
English
Use of Cognitive Work Analysis across the System Life Cycle: From Requirements to Decommissioning
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