The objective of a LCI (life cycle Inventory) is -
► to create a mass balance which accounts for an in put &out put to the overall system
► to establish a base line of information on a system’s overall resource use, energy consumption & environmental loading
► to identify the stages within the life cycle of a product or process where a reduction in resource consumption & environmental output can be achieved
► to compare the system’s input &output associated with alternative products, processes or activities
► to identify the areas to be addressed during the life cycle analysis
► to guide development of new product, processes or activities which conserve the resources and minimize adverse impact on the environment.
Inventory Analysis
1. Make process tree or flow chart classifying events in a product’s life cycle
2. Determine all mass and energy inputs and outputs
3. Collect relevant data
4. Make assumptions for missing data
5. Establish (correct) material and energy balance(s) for each stage and event
Impact Analysis
1. Define impact categories
2. Determine which loads affect different impact categories
3. Assign indicators to impact categories
4. Weigh importance of each category
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