Class 1 Div 2
Class I Division 2 refers to a hazardous location where flammable gases, vapors, or mists are not normally present during normal operations, but may occur under abnormal conditions such as leaks, equipment failure, or accidental release.
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Highlights
ATEX & IECEx Certification Codes (Equivalent)
- ATEX: II 3G Ex ic IIC T4 Gc
- IECEx: Ex ic IIC T4 Gc
- Class I – Hazard due to flammable gases or vapors (e.g., hydrogen, methane, propane, gasoline vapors)
- Division 2 – The hazard is not normally present, but may exist occasionally under abnormal conditions
- Areas adjacent to refineries and processing units
- Chemical storage rooms and transfer points
- Fuel dispensing and loading zones
- Ventilated enclosures and compressor rooms
- Pump rooms and valve galleries
Description
ATEX & IECEx Certification Codes (Equivalent)
- ATEX: II 3G Ex ic IIC T4 Gc
- IECEx: Ex ic IIC T4 Gc
What It Means
- Class I – Hazard due to flammable gases or vapors (e.g., hydrogen, methane, propane, gasoline vapors)
- Division 2 – The hazard is not normally present, but may exist occasionally under abnormal conditions
Typical Environments
- Areas adjacent to refineries and processing units
- Chemical storage rooms and transfer points
- Fuel dispensing and loading zones
- Ventilated enclosures and compressor rooms
- Pump rooms and valve galleries
Equipment Requirements
Equipment must be certified for Class I Division 2 or suitable for Division 1/Zone 1 use. Devices should be designed to prevent ignition under fault or abnormal conditions and maintain safe operation in classified areas.