Page 16 of the public administrative regulation of TA-Luft has a detailed list of all plant types affected by the changes. It reads:
“Plants for the production of basic organic chemicals in the sense of this administrative regulation are plants for the production of the following substances of groups of substances through chemical, biochemical or biological conversion with a total manufacturing capacity relating to these substances of more than 20,000 tonnes per year in continuous processes”Source: Bundesrat (2021): New version of the first general administrative regulation for the Federal Immission Control Act In summary, all company organisations in industries working with hydrocarbons must now deal with Leak-tightness requirements of TA-Luft.