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answered Oct 3, 2015 by belmoreno (2,190 points)

I would consider the following installation practices for the hazardous environment:

  • Drilling of entries in EEx d enclosures is not permitted.
  • Painting of the flame paths is not permitted.
  • Cutting, drilling or welding hazardous area equipment is not permitted, unless by certified personnel.
  • EEx stopping plug of an approved type should be fitted to all unused entries of EEx equipment.
  • Only EEx d/e glands should be used with EEx enclosures.
  • Only tools suitable for EEx equipment should be used.
  • Approved non-setting compound (MolykoteTM) on flame paths of EEx equipment should be applied as per manufacture’s standard and when flame paths are not protected against corrosion.
  • There should be no obstruction around the flanges of EEx d enclosures.
  • Any alteration to certified equipment which may invalidate the certification should be avoided.
  • Record and keep track and all details of contractor' supplied equipment on the ‘hazardous area equipment certificate list.
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