IEC Hazardous Area Zones

 

  • ZONE 0 - An area in which an explosive gas-air mixture is continuously present or present for lomg periods of time.

 

  • ZONE 1 - An area in which an explosive gas-air mixture is likely to ouccur in normal opertions.

 

  • ZONE 2 - An area in which an explosive gas-air ixture is not likely to occur and if it does, it is only for a short period of time.

 

  • ZONE 10 - An explosive atmosphere, resulting from dust which is present continuously or for long periods of time.

 

  • ZONE 11 - A short lived explosive dust atmosphere from unsettling dust deposits.