Chemical processes, including refineries, Best Available Techniques and additional guidance documents

Best Available Techniques (BAT) aim to prevent or reduce emissions and impacts on the environment.

Industrial installations with specific types of activity must use BAT to prevent and reduce emissions to air, water and land. 

The UK is no longer required to implement EU BAT Conclusions published after 2021, but permit applications should continue to meet UK BAT requirements and retained pre-2021 BAT Conclusions. Newer EU BAT Conclusions may be used to demonstrate current good practice where relevant.

For further information visit Gov.uk

Best Available Techniques and additional guidance

Within Wales we use the following available standards and guidance as part of our compliance assessments and setting permit conditions and any associated emission limit values.

Download Speciality organic chemicals: additional guidance from Gov.uk

Download Inorganic chemicals: additional guidance from Gov.uk

Download the Large volume organic chemicals BAT conclusions from the European Integrated Pollution Prevention and Control Bureau (EIPPCB)

Download the Refining of mineral oil and gas BAT conclusions from the European Integrated Pollution Prevention and Control Bureau (EIPPCB)

Download Waste water and waste gas treatment (in the chemical industries) BAT conclusions from the European Integrated Pollution Prevention and Control Bureau (EIPPCB)

Further information on Environmental Permits for installations

Read more about permitting an installation.