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Control of Major Accident Hazards (COMAH)

Chemical plant

The Control of Major Accident Hazards (COMAH) Regulations ensuring that businesses:

"Take all necessary measures to prevent major accidents involving dangerous substances

Limit the consequences to people and the environment of any major accidents which do occur"

How do COMAH regulations work?

COMAH 2015 Post Implementation Review – have your say

The Control of Major Accident Hazards Regulations 2015 (COMAH), which have been in place since 1st June 2015, include a requirement for the Health & Safety Executive (HSE) to review them after five years. The purpose of the review is to see if they've met their objectives.

To help us do this, HSE needs to hear from COMAH-site operators and others involved in COMAH, including emergency planners and responders.

Online survey - seeking your views

The survey will close at the end of the day on Wednesday 31st July 2019.

Hazardous substances consent application

An online ‘wizard’ to guide applicants through the required major-hazard information is available.

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