Page 251 - Materials Chemistry, Second Edition

L1644_C06.fm Page 224 Monday, October 20, 2003 12:06 PM

1. Goal and scope definition

Goal definition

Which situations or scenarios will be assessed and
compared?

Scope definition
Function
(e.g., waste treatment)
Functional unit
(e.g., 1TJ electricity of 1kg waste
treated)
Initial system boundaries
(e.g., 1% of contribution to
functional unit)
SELECT LCIA characterisation
potentials and/or single
index methods
(e.g., GWP, AP, NP, etc.
and eco-indicator 95, EPS, etc.)
Initial cut-off criterias
(e.g., site-specific 5%, literature 1%)
Weighting and
aggregation scheme

Accidents
Options Uncertainty analysis

Environmental risk
assessment

Eco-efficiency

FIGURE 6.6 Goal and scope definition.

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