Beginning LCA. A guide into environmental life cycle assessment
1995
The main goal of this document is to provide practical guidance for those who want to start with Life Cycle Assessment (LCA). The document has been set up in the form of modules. Module 1 provides arguments to decide whether or not LCA is the right tool to use in a particular case. In this module other ways to study interactions with the environment will be mentioned as well. Module 2 explains the process of formulating the purpose and scope of the study. The results will give a general picture of the characteristics of the LCA. The next step, which is called the inventory analysis, represents the largest amount of work and is split up into four parts, i.e. Modules 3,4,5, and 6. Module 3 gives guidelines and detailed examples on how to construct a flowchart of the study. Module 5 describes how to collect the required data and Module 4 how to define the system boundaries. Finally, the processing of data is described in Module 6. The result of the inventory is a list of emissions and extractions for all processes involved in manufacturing and required for the functioning of a product, service or activity during the entire life cycle. Sometimes results are so clear that you may decide to stop after the inventory stage. Usually however, it is useful to carry out the impact assessment, which is split up into two parts (Modules 7 and 8). Instructions are given on how to translate the list of environmental interventions of the entire life cycle of the product into a table with scores on environmental themes: the classification/characterization. A basic substance list that might be used is added (Module 7). Also a description showing how to evaluate the results of the classification/characterization is given, so that conclusions may be drawn on the information that has been generated (Module 8). Module 9, the last module, describes how to complete the LCA. It provides suggestions on how to present the results and indications about the improvement analysis.
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