Methodology for PCF Calculations of Lubricants, Greases and other Specialties
(also involving the management of waste such as flushing oil and production waste), which are accounted for in the foreground system. These processes are linked with their representing technology flows. In contrast, the background system consists of all processes that the lubricant manufacturer does not directly control, such as the production of electricity, fuel, thermal energy and raw materials. This also includes the exploration, production and inbound transportation of raw materials to the lubricant manufacturer. Note that the background system contains as well only cradle-to-gate data.
of a certain
or other specialty at the factory
ac ground system
Foreground system ac ground system Foreground system Figure 3: Illustrative process flow sheet of a lubricant manufacturer.
When collecting foreground and background data, several categories of data exist. These data categories represent 1) primary data, (2) specific secondary data, (3) proxy data, and (4) estimated data 3.
When choosing data categories to represent the foreground or background data, the data quality requirements shall be assessed (cf. Section 3.1.2) and those data categories shall be selected for the PCF calculation with the highest data quality, for instance, based on the data quality rating (cf. Section 3.1.3) if not stated otherwise.
3 This definition of data categories was established by the UEIL/ATIEL working group. Version 1.2, 15.10.2025 © ATIEL and UEIL Page 14 of 40 This document is a controlled document only in electronic form. Printed versions or copies are not subject to change service
Technology flow
lementary flow
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