Major Accident Hazard Sites designated sites process or store more than specified quantities of certain dangerous substances and have the potential to cause significant on-site and off-site effects to employees, members of the public and the wider environment including the possibility of causing multiple fatalities. The quantities stored at Grangemouth are in excess of the Top Tier thresholds as defined under the COMAH Regulations and therefore the Complex is subject to the full requirements of the COMAH Regulations. (Source: www.hse.gov.uk/comah/)
