LCA Exam Questions with Correct Answers
Gabi software LCI and LCIA m odels o The Gabi software includes several methods
amongst which the ReCiPe model. Other models are TRACI (mainly used in the US) and CML
(a predecessor of the ReCiPe model).
Classification o Assigning an LCI result to impact categories. One LCI result can play a
role in more than one impact category
§ Assigning emissions/extractions to an environmental impact.
§ One emission can have several environmental impacts.
§ Example: NOx contributes to acidification, eutrophication and has effects on human health.
Characterization o Quantification of the impact of a certain emission or extraction within
an impact category
§ Not purely natural science
, § Many uncertainties
§ Assumptions on for example fate of substances and it's toxicity
§ Several methods, common ones:
· Recipe (combination of CML & Eco-indicator
· TRACI
§ Several methods available in Gabi
§ No wrong, just different, methods
§ The impact of the choice of model should be assessed
Interpretation o Part of the last phase of the LCA is the interpretation of the results. You
have to draw conclusions from your results:
Gabi software LCI and LCIA m odels o The Gabi software includes several methods
amongst which the ReCiPe model. Other models are TRACI (mainly used in the US) and CML
(a predecessor of the ReCiPe model).
Classification o Assigning an LCI result to impact categories. One LCI result can play a
role in more than one impact category
§ Assigning emissions/extractions to an environmental impact.
§ One emission can have several environmental impacts.
§ Example: NOx contributes to acidification, eutrophication and has effects on human health.
Characterization o Quantification of the impact of a certain emission or extraction within
an impact category
§ Not purely natural science
, § Many uncertainties
§ Assumptions on for example fate of substances and it's toxicity
§ Several methods, common ones:
· Recipe (combination of CML & Eco-indicator
· TRACI
§ Several methods available in Gabi
§ No wrong, just different, methods
§ The impact of the choice of model should be assessed
Interpretation o Part of the last phase of the LCA is the interpretation of the results. You
have to draw conclusions from your results:
