In electrical engineering a hazardous area is a place where a fire or explosion hazard may exist due to:

  • flammable gases or vapours
  • combustible dusts or ignitable fibers

which may be present in the air in quantities sufficient to produce explosive or ignitable mixtures.

Where are hazardous areas found?
Places like oil refineries, chemical plants and sewerage treatment plants are areas where hazardous gas vapours may be present; however, many companies don’t realise dust can also create hazardous areas in places such as food and beverage manufacturers, plastics factories and recycling operations.

Typical industries with hazardous areas


Due to the risks associated with these hazardous areas, staff accredited with an EEHA qualification need to take responsibility for installing and maintaining any electrical equipment in these areas.

EEHA qualified people can:

  • identify hazardous areas
  • understand hazardous area drawings
  • understand explosion protection techniques
  • are skilled in equipment installation in these areas
  • are familiar with procedures for breakdowns and the maintenance of equipment in hazardous areas
  • ensure all hazardous area dossiers are updated.

The electrical equipment installed in these areas must also be specifically designed and tested to ensure it doesn’t cause an explosion either due to arcing or its high surface temperature.

When installing electrical equipment in hazardous areas it is essential that:

  • Checks are done of existing hazardous area inspections and drawings.
  • A hazardous area drawing and dossier is created, if it does not already exist.
  • All electrical equipment to be installed carries ICE/Ex certificate.
  • Installation of new equipment is carried out by EEHA qualified electricians.

EAS can coordinate the whole process of maintaining and installing electrical equipment in hazardous areas for you. From inspections, drawings, installation, testing and certification. EAS can deliver you a complete turnkey solution.

If you’re planning a new equipment installation in your plant, which is classed as a hazardous area, or need to conduct maintenance on equipment in hazardous areas; get in touch with the EAS team today on 07 834 0505.

When it comes to safety precautions and installation practices in hazardous areas, our team does not cut corners.

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