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SLCA (GOAL AND SCOPE (System boundary approach:
choose and set boundaries…
SLCA
GOAL AND SCOPE
- System boundary approach:
choose and set boundaries for the evaluation depending on the available data
- Functional unit choice:
all relevant emissions and resources used are aggregated and expressed per FU (es. CO2-eq/kgMeat)
- Allocation:
what is the allocation based on...?
- Choice of the impact categories:
such as GWP, Eutrophication, Acidification, Land usage, Photochemical smog, Water consumption, Energy consumption. These are expressed with related units per unit of product that we are evalueting (es. for the land usage: m2/kgMeat)
DEF
''Method to assess the environmental impact of products by investigating the entire life cycle from cradle-to-grave or cradle-to-cradle (including turn up), with all the different relevant material flows''
KEY ASPECT
- Evaluation of all the stages
- Product-based assessment (NOT the manufacturing company!!)
- Standardized tool (ISO)--> follow same main steps
LCA STEPS
- Goal and scope definition
- Inventory analysis
- Impact assessment
- Interpretation and aggregation
INVENTORY ANALYSIS
Collect the data and identify material and energy flows. Underline the flows that affect the environment. The result is a list of:
- Energy and raw materials
- Solid waste
- Airborne emissions
- Water-borne emissions
IMPACT ASSESSMENT
Classification of the impact categories and assessment of the environmental impacts of the inventory analysis, depending on the situation that we are facing
INTERPRETATION
Analyse and interpretate the results. Give weights (%) to the different impact categories and then aggregate all togheter (es. pie chart) to have an overview.
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