**2.2. Accounting and LCA methodologies**

As advanced, there are still no specific tools and methodologies for the characterization of the environmental profile of a manufacturing process. This is being taken by research groups and associations, such as the CO2PE initiative previously referred, but still much as to be done on the standardization of methods and quality of the inventory data currently available. As referred, the particular system technology being used for the process, i.e., the type of machine-tool available, as well as the utilization mode during production, also plays an important role on the accounting of energy consumption during process, although this has been neglected on the common LCI databases.

All environmental analysis generated in this framework was followed by application of the Eco-Indicator 99 (H,A) method, using SimaPro 7.0 with Ecoinvent 2.0 unit processes as LCI database (Pré-consultants, 2010a,b). LCI datasets of secondary metals have been used whenever applicable on the equipment-related resources. The main inputs related to the use phase, electricity and hydraulic oil, were distinguished as different use phases, to assist their individual impact during the analysis. The LCA outcome results from Single Score analysis.
