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LCA Methodology
Application of the Impact Pathway Analysis in the Context of LCA
The Long Way from Burden to Impact
Wolfram Krewitt; Petra Mayerhofer; Alfred Trukenmüller; Rainer Friedrich
Corresponding author:: Dr.-Ing. Wolfram Krewitt, Institut für Energiewirtschaft und Rationelle Energieanwendung, Universität Stuttgart, Heßbrühlstr. 49 a, D-70565 Stuttgart, Germany
Current LCA practice is mass oriented, i.e. is focused on the amount of chemicals released, disregarding place and time of release. Life cycle impact assessment aims at evaluating potential impacts, and a variety of weighting schemes is discussed to be used for ranking and aggregation of impacts. To establish a closer link between the quantity of a burden released and a decision making context, we propose to follow a detailed impact pathway analysis to estimate actual impacts for some priority impact categories, and use measured individuals’ preferences for impact valuation. Results from a case study illustrate the relevance of site specific impact assessment in the context of LCA. | | Keywords: impact pathway analysis, application; impact valuation; LCA, from burden to impact; LCA, practice, mass oriented; priority impact categories; site specific impact assessment |
3 LCA (2) 86-94 (1998)
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