Life cycle impact assessment
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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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Life cycle impact assessment

Life Cycle Impact Assessment


Admin issues

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

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)


Midpoints vs endpoints

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!


Lcia model example

LCIA ‘Model’ Example

Source: ISO 14042 Doc

  • Should have a comprehensive set of impact categories/indicators

  • Your own “values” should not bias your model


Limitations

Limitations

  • Scientific method combined with values

  • Lack of comprehensive focus/boundary

  • Category indicators not equally important or precise

  • Lack of complete data


Models

Models


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