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Life Cycle Impact Assessment

Life Cycle Impact Assessment. Admin Issues. HW 2 Answers (done grading?) Setting group presentations 1 or 2 classes can we run late? How much time? Or do on Friday? Spreadsheets for EIO-LCA Impact Assessment Exercise/Lecture. Impact Assessment (LCIA). Mandatory Elements:

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Life Cycle Impact Assessment

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  1. Life Cycle Impact Assessment

  2. Admin Issues • HW 2 Answers (done grading?) • Setting group presentations • 1 or 2 classes • can we run late? • How much time? • Or do on Friday? • Spreadsheets for EIO-LCA • Impact Assessment Exercise/Lecture

  3. Impact Assessment (LCIA) • Mandatory Elements: • Selection (impact categories, their indicators, and characterization models) • Classification (assigning LCI results to categories) • Characterization (calculation of category results) • Optional Elements: • Normalization (comparing to reference info) • Grouping (sorting/ranking impact categories) • Weighting (with numerical factors/value choices) • Data Quality Analysis (uncertainty/sensitivity)

  4. Midpoints vs. Endpoints • Typical LCI result is ‘an emission, waste generation, etc.’ - This is a midpoint • Breathing emissions, etc. potentially leads to health effects - these are endpoints or impacts • Now you can see why many studies stop at LCI stage!

  5. LCIA ‘Model’ Example Source: ISO 14042 Doc • Should have a comprehensive set of impact categories/indicators • Your own “values” should not bias your model

  6. Limitations • Scientific method combined with values • Lack of comprehensive focus/boundary • Category indicators not equally important or precise • Lack of complete data

  7. Models

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