Oil drilling platforms, refineries, chemical plants
Oil tank farms, pipeline transfer stations, gas stations
Flammable gas (e.g., natural gas, liquefied petroleum gas) storage areas
2. Mining and Tunneling
Underground coal mines (areas prone to gas accumulation)
Metal/non-metal mine tunnels
Subway, railway, and highway tunnels
3. Hazardous Materials Storage and Transportation
Gunpowder depots, fireworks warehouses
Chemical storage tank farms, hazardous materials warehouses
Ports and docks (flammable liquid loading and unloading areas)
4. Power and Energy Facilities
Power plants (especially coal-fired and gas-fired power plants)
Substations and distribution rooms (areas with arcing risks)
Battery Energy Storage Stations (to prevent hydrogen explosions)