Hazardous Area Technical Information

Checklist of Typical Hazardous Areas

The following list includes common hazardous areas as well as some less obvious locations where flammable gases, vapours, liquids, or combustible dusts may be present. This list is not exhaustive, and any other areas suspected of containing such hazards should be carefully assessed.

• Flammable liquid cabinets
  (Usually require appropriate signage and exclusion markings, but not a Verification Dossier if no electrical installations are present in the associated hazardous area.)

• Explosives areas

• Vehicle workshops

• Vehicle parking and standing areas
  (Particularly underground or enclosed spaces where ventilation is restricted.)

• Fuel dispensing stations

• Fuel storage tanks and ventilation pipes

• Pollution control equipment

• Vessel ullage areas

• Waste collection storage vessels, drains, sumps, or pits

• Aircraft hangars and refuelling areas

• Above-ground fuel storage tanks

• Underground fuel storage tanks

• Packaged fuel storage areas

• Fuel loading facilities

• Waste liquids collection and drainage areas

• Gas equipment installations

• Fume cupboards and laboratories

• Flammable medical agents storage

• Anaesthetising areas

• Sewage treatment plants

• Surface coatings and adhesives application areas

• Finishing processes
  (Including paint and lacquer operations)

• Vessels containing flammable liquids

• Degreasing and cleaning processes

• Ammonia systems

• Refineries

• Grain silos, dust hoppers, bag emptying stations, cyclones, and filters
  (Part of suction extraction systems)

• LPG vessels

• LNG vessels

• Aerosol manufacturing facilities

• Sugar mills

• Distilleries

• Organic waste depots

If you suspect any other areas might pose a risk of flammable atmospheres, a thorough hazard assessment should be conducted to confirm.