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Control of Major Accident Hazards (COMAH)

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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"

Who's responsible for COMAH regulations?[17]

How do COMAH regulations work?[18]

Operators: COMAH submissions

COMAH notifications[21]

COMAH establishments in your area

You can now search online for public information about establishments in your area[22] that are covered by the Control of Major Accident Hazards (COMAH) Regulations 2015.

COMAH establishments[23]

COMAH 2015: Regulation guidance

Further guidance[26]

Major accident examples

More major accidents[29]

Hazardous substances consent application

An online 'wizard' to guide applicants[30] through the required major-hazard information is available.

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Link URLs in this page

  1. COMAHhttps://www.hse.gov.uk/comah/index.htm
  2. Overview - Backgroundhttps://www.hse.gov.uk/comah/background/index.htm
  3. Seveso IIIhttps://www.hse.gov.uk/seveso/index.htm
  4. COMAH Regulations 2015https://www.hse.gov.uk/comah/background/comah15.htm
  5. Cost recovery in detailhttps://www.hse.gov.uk/comah/charging/index.htm
  6. The COMAH Competent Authorityhttps://www.hse.gov.uk/comah/authorityindex.htm
  7. Guidancehttps://www.hse.gov.uk/comah/guidance.htm
  8. Competent authority guidance and key internal CA procedureshttps://www.hse.gov.uk/comah/ca-guides.htm
  9. Notificationshttps://www.hse.gov.uk/comah/notification/index.htm
  10. Submitting public informationhttps://www.hse.gov.uk/comah/submitting-public-information.htm
  11. Establishments subject to COMAH 2015https://www.hse.gov.uk/comah/comah-establishments.htm
  12. Emergency plan testing during coronavirushttps://www.hse.gov.uk/comah/external-emergency-plan-tests-during-coronavirus.htm
  13. Resourceshttps://www.hse.gov.uk/comah/resources.htm
  14. Safety alertshttps://www.hse.gov.uk/comah/alerts/index.htm
  15. Investigation reportshttps://www.hse.gov.uk/comah/investigation-reports.htm
  16. Complete a short surveyhttps://www.surveymonkey.com/r/3YY388L
  17. Who's responsible for COMAH regulations?https://www.hse.gov.uk/comah/authorityindex.htm
  18. How do COMAH regulations work?https://www.hse.gov.uk/pubns/books/l111.htm
  19. Operators of COMAH establishments required to notify under the new 2015 Regulationshttps://www.hse.gov.uk/comah/notification/index.htm#existing
  20. Operators submitting public informationhttps://www.hse.gov.uk/comah/submitting-public-information.htm
  21. COMAH notificationshttps://www.hse.gov.uk/comah/notification/index.htm
  22. public information about establishments in your areahttps://notifications.hse.gov.uk/COMAH2015/Search.aspx
  23. COMAH establishmentshttps://www.hse.gov.uk/comah/comah-establishments.htm
  24. COMAH Intervention Manager - user manualhttps://www.hse.gov.uk/comah/assets/docs/user-manual.pdf
  25. A guide to the COMAH Regulations 2015https://www.hse.gov.uk/pubns/books/l111.htm
  26. Further guidancehttps://www.hse.gov.uk/comah/guidance.htm
  27. Chevron Pembroke refinery (02/06/2011)https://www.hse.gov.uk/comah/assets/docs/chevron-pembroke-report-2020.pdf
  28. Bhopal - Union Carbide (3/12/1984)https://www.hse.gov.uk/comah/sragtech/caseuncarbide84.htm
  29. More major accidentshttps://www.hse.gov.uk/comah/sragtech/casestudyind.htm
  30. online 'wizard' to guide applicantshttps://www.hse.gov.uk/landuseplanning/hazardoussubstances.htm#application-forms

Glossary of abbreviations/acronyms on this page

COMAH
Control of major accident hazards
COMAH
Control of major accident hazards

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2025-02-27