14.17.1 Portable and transportable electrical equipment or
spark-producing equipment should not be introduced into, or remain in, any area
classified as hazardous area zone 0, zone 1 or zone 2 in accordance with section 6.2
unless it has been determined that:
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.1 the equipment is certified as suitable for use in the area in
question; or
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.2 the area is free of ignitable concentrations of flammable vapours
and appropriate controls have been put in place to prevent the introduction of
flammable vapours into the area.
14.17.2 Repairs, maintenance and overhaul of certified
electrical equipment in hazardous areas should be performed by suitably qualified
personnel in accordance with appropriate international standards.