2.D.3.e - Degreasing

This category is a key source of NMVOC emissions in terms of emissions level and trend.
This source category comprises NMVOC emissions from the use of solvents in following processes:

• Metal degreasing (SNAP code 60201)
• Electronic component manufacturing (SNAP code 60203)
• Other industrial cleaning (SNAP code 60204) (e.g. precision mechanics, optics, manufacture of watches and clocks)

Until 1999, data of the present source categories 2.D.3.e and f were treated as one source group. From 1990 to 1993 only a rough expert estimation was carried out, which since 1994 in a first step and since 2000 in a second step could be improved by a more detailed data collection that enables to follow the development of source group 2.D.3.e. Since 2000, the share of this source group accounts for about 5-9 % of total NMVOC emissions from solvent-based products on a very stable niveau.

The relative overall uncertainty of emissions caused by applications of this source group is estimated at 50%.