|
General comment Both primary and secondary data are used. The main sources for primary data are the bill
of materials, technical drawings, and site-specific foreground data provided by ABB.
For all processes for which primary data are not available, generic background data
originating from the ecoinvent v3.9.1 database, with system model “allocation, cut-off by
classification”, are used. The LCA software used for the calculations is SimaPro 9.5.
The utility consumption and waste generation by ABB, in the core manufacturing stage, is
allocated to the production of one reference product according to applicable rules. For the
end-of-life allocation, the “Polluter Pays” principle is adopted according to what is defined
in the CEN/TR 16970 standard. However, the potential benefits and avoided loads from
recovery and recycling processes are not considered because it is not required by the PCR.
According to PCR, the cut-off criteria can be set to a maximum of 2 % of the overall
environmental impacts. In this LCA, stickers have been excluded as their weights are
negligible. Process black oxide and phosphate conversion coating have also been excluded
due to the model complexity and unavailability of data.
|
