A hazardous area is an area (three-dimensional space) in which a flammable atmosphere is or may be expected to be present, and require special precautions for the construction, installation and use of equipment. Examples of hazardous areas are:
– flammable liquid and gas storage tanks and associated equipment (e.g. release points such as vents, fill points, dip points, safety relief devices)
– flammable liquid and gas dispensing equipment (e.g. service stations, depots and airports, LP gas filling stations)
– storage areas for flammable liquids in packages (e.g. warehouses, store rooms, workshops)
– storage areas for flammable gases in cylinders
– mixing and blending vessels for flammable product formulations road and rail tanker loading facilities for flammable liquids and gases
– fume cupboards used for flammable liquids and gases
– laboratory areas where flammable liquids are used and stored

– spray painting booths used for flammable paints and lacquers
– landfill gas (e.g. methane), sewage treatment and sewage pumping plants
– flammable solvent printing processes
– accidental puncturing and spilling contents of containers containing flammable liquids
– application of flammable sealants and adhesives in enclosed areas
– areas around activities generating fine dusts of combustible material (sugar, grain, polymers, dry organic residues)
– and many more…
Recent statistics show the most developing industrial area is the Ex one…

Never accept only a 2D plan about hazardous area classification (HAC), pls ask for detailed description of HAC and 3D if possible.

1 comment

  1. Shall we go for point source or complete area (room) certification?
    Both have advantages…
    1) less area shall be Ex classified, but in case of modification HAC shall be modified immediately
    2) higher cost, more flexibility

Leave a Reply