Intrinsically Safe or Not?
When entering a high hazard zoned area (zone 0, zone 1, zone 2 explosive gas atmospheres or zone 20, zone 21, zone 22 explosive mixture of air and flammable dusts) do you remove your mobile phone, battery powered watch, jewellery and ensure you are earthed with the appropriate PPE, designed to dissipate static electrical discharge? Your tools need to be anti-sparking tools, equipment must be ATEX approved.
The smallest of sparks can be catastrophic.
Check you have intrinsically safe equipment in these zones or securely leave it behind.