GaBi Solutions

Impact 2002+

Description of the IMPACT 2002+ Method




The Life Cycle Impact Assessment methodology IMPACT 2002+ suggests a feasible implementation of a combined midpoint/damage approach. These combinations will link all types of Life Cycle Inventory (LCI) results, the elementary flows and other interventions, throughout the 14 midpoint categories summed up to four damage categories.

New concepts and methods have been developed within IMPACT 2002+ for the comparative assessment of human toxicity and eco-toxicity. Human Damage Factors are calculated for carcinogens and non-carcinogens, employing intake fractions, best estimates of dose-response slope factors, as well as severities. The transfer of contaminants into the human food is no more based on consumption surveys, but accounts for agricultural and livestock production levels. Indoor and outdoor air emissions can be compared and the intermittent character of rainfall is considered. Both human toxicity and ecotoxicity effect factors are based on mean responses rather than on conservative assumptions.


Other midpoint categories are adapted from existing characterising methods (Eco-Indicator 99 and CML 2001). All midpoint scores are expressed in units of a reference substance and related to the four damage categories human health, ecosystem quality, climate change, and resources.


Normalisation can be carried out either at midpoint or at damage level and the IMPACT 2002+ method presently provides characterisation factors for different LCI-results (see literature).


thinkstep and IABP-GaBi cannot be held responsible for any of this information and data.


Link Impact (2002)+:





Jolliet, O., Margni, M., Charles, R., Humbert, S., Payet, J., Rebitzer, G. and Rosenbaum, R.,2003. IMPACT 2002+: A New Life Cycle Impact Assessment Methodology. Int J. of LCA 8 (6) 324-330



Crettaz, P., Rhomberg, L., Brand, K., Pennington, D.W. and Jolliet, O., 2002. Assessing Human Health Response in Life Cycle Assessment using ED10s and DALYs: Carcinogenic Effects; Int. Journal of Risk Analysis, 22 (5) 929-944



Pennington, D.W, Crettaz, P., Tauxe, A. and Jolliet, O., 2002. Assessing Human Health Response in Life Cycle Assessment using ED10s and DALYs: Non-Carcinogenic Effects; Int. Journal of Risk Analysis, 22 (5) 945-961

zurück zur Übersicht