Ver. 1.0 January 22, 2026
Description
Classification zones compliant with National Fire Protection Association (NFPA) 2, 52 and 70. Refer to NFPA 70 (E), National Electrical Code Handbook, §500.5, 2023 for more information.
Hazardous Zones – Fill & Decant Processes
Item | Description |
| Zones | Color |
1 | Doors |
| Class I Div. II | yellow |
2 | 10’ radius around doors |
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3 | Zone extends to ground surface |
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Hazardous Zones – Venting Processes
Item | Description |
| Zone | Color |
1 | Line of discharge – 15' & 15° from vent |
| Class I Div. I | red |
2 | Vent 5’ radius from vent |
| Class I Div. II | yellow |
3 | Vent 15’ radius from vent |
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4 | Zone extends to ground surface |
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