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CDOIF Environmental Risk Tolerability Assessment

Chemical Factory CDOIF iStock 622809590 Lower ResDo you operate a COMAH (Control of Major Accident Hazards) site?  Processing or storing hazardous materials poses a potential threat to the environment.

COMAH establishments have a particular responsibility to demonstrate that they have reduced their risk of major environmental accidents and pollution incidents to a tolerable level.

The Chemical and Downstream Oil Industries Forum (CDOIF) published a guideline to provide a common methodology and screening framework with the aim of supporting COMAH sites in adopting a consistent approach for the following aspects of risk assessment:

  • Identification of types of environmental impact;
  • Characterisation of the duration and severity of environmental impact;
  • Identification of what constitutes a Major Accident to the Environment (MATTE); and
  • Classification of risk tolerability criteria.

At Mabbett, our process safety team are experienced in the CDOIF methodology, having supported a number of our COMAH clients in the chemical and distilling sectors through their assessments.

If your site has a requirement for an environmental risk tolerability assessment, or if you would like more information on our range of COMAH-related consultancy services, please get in touch.


Contact Us

To discuss any of the above or any other Process Safety requirements that you may have, please contact:

Paul Young (Manager, Process Safety) on 0141 227 2300 or