oil-immersed transformer should pay particular attention to their fire safety measures.

1, more than 2500kg of fuel in oil-immersed transformers with oil in the 600kg-2500kg between oil-filled electrical equipment, the fire interval of not less than 5m.
  2, when two adjacent oil-immersed transformer spacing between the fire does not meet the requirements, should set fire wall or fire wall at the top plus fire water curtain. Single-phase oil-immersed transformer can only set the fire wall between the fire or water curtain.
  3, when the plant wall and the outer edge of the outdoor oil-immersed transformer  circuit breakers specifies the distance is less than, the wall should be used firewall. The distance from the outer edge of the wall and the transformer should not be less than 0.8m.
  4, Plant outer wall from the oil-immersed transformer is less than 5m, 3m plus the total thickness of the transformer below the line and both sides of the outer edge of the range of plus 3m, windows and holes should be opened; in that outside its scope  mcb circuit breaker and fixed windows, its fire resistance of not less than 0.9h.
  5, oil-immersed transformers and other oil-filled electrical equipment over a single fuel at 1000Kg, should set an oil storage and public collection sump pit and placed pebbles to spare transformer to fire and unloading.
  6, oil-immersed transformers existing relevant specification shall set a fixed water spray extinguishing systems. Plant oil-immersed transformer should be set in a separate room, the room doors should open outwards B fire doors, and through the corridor outside the house or should not be open to other rooms.