The Dangerous Substances and Explosive Atmospheres Regulations 2002

The Dangerous Substances and Explosive Atmospheres Regulations 2002 (DSEAR) require employers to control the risks to safety from fire,  explosions and substances corrosive to metals.

Quick guide to DSEAR

What is DSEAR?

DSEAR stands for the Dangerous Substances and Explosive Atmospheres Regulations 2002.

Dangerous substances can put peoples' safety at risk from fire, explosion and corrosion of metal. DSEAR puts duties on employers and the self-employed to protect people from these risks to their safety in the workplace, and to members of the public who may be put at risk by work activity.

What are dangerous substances?

Dangerous substances are any substances used or present at work that could, if not properly controlled, cause harm to people as a result of a fire or explosion or corrosion of metal. They can be found in nearly all workplaces and include such things as solvents, paints, varnishes, flammable gases, such as liquid petroleum gas (LPG), dusts from machining and sanding operations, dusts from foodstuffs, pressurised gases and substances corrosive to metal.

What does DSEAR require?

Employers must:

  • find out what dangerous substances are in their workplace and what the risks are
  • put control measures in place to either remove those risks or, where this is not possible, control them
  • put controls in place to reduce the effects of any incidents involving dangerous substances
  • prepare plans and procedures to deal with accidents, incidents and emergencies involving dangerous substances
  • make sure employees are properly informed about and trained to control or deal with the risks from the dangerous substances
  • identify and classify areas of the workplace where explosive atmospheres may occur and avoid ignition sources (from unprotected equipment, for example) in those areas

Link URLs in this page

  1. Controlling fire and explosion risks in the workplacehttps://www.hse.gov.uk/pubns/indg370.htm
  2. The dangers of cellulose nitrate filmhttps://www.hse.gov.uk/pubns/indg469.htm
  3. Dept for Business, Innovation and Skills (BIS)http://www.bis.gov.uk/policies/business-sectors/environmental-and-product-regulations/product-regulation/ec-product-directives/atex-directive
  4. Energy Institutehttp://www.energyinst.org/home
  5. Association for Petroleum and Explosives Administration (APEA)http://www.apea.org.uk/
  6. The trade association for the LPG industry in the UK (UKLPG) Codes of practicehttp://www.uklpg.org/
  7. REACHhttps://www.hse.gov.uk/reach/index.htm
  8. Exemption certificateshttps://www.hse.gov.uk/asbestos/exemption.htm
  9. COMAHhttps://www.hse.gov.uk/comah/index.htm
  10. Chemicalshttps://www.hse.gov.uk/chemicals/index.htm
  11. Riskhttps://www.hse.gov.uk/risk/index.htm
  12. Constructionhttps://www.hse.gov.uk/construction/index.htm
  13. COSHHhttps://www.hse.gov.uk/coshh/index.htm
  14. Portshttps://www.hse.gov.uk/ports/index.htm
  15. Textileshttps://www.hse.gov.uk/textiles/index.htm
  16. Weldinghttps://www.hse.gov.uk/welding/index.htm
  17. LEVhttps://www.hse.gov.uk/lev/index.htm

Glossary of abbreviations/acronyms on this page

REACH
Registration, Evaluation, Authorisation & restriction of Chemicals
COMAH
Control of major accident hazards
COSHH
Control of Substances Hazardous to Health
LEV
Local exhaust ventilation

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Updated 2024-10-14