Classify equipment against the required Ex rating given the installation zone per IEC 60079-10-1 - tanker deck, pump-room, enclosed spaces around vents.
Formula
$$ \text{EPL}{eq} \leq \text{EPL}{zone} $$
Symbol legend
| Symbol | Meaning | Unit | Source |
|---|---|---|---|
| $Zone 0$ | Continuous explosive atmosphere | - | IEC 60079-10-1 |
| $Zone 1$ | Likely in normal operation | - | IEC 60079-10-1 |
| $Zone 2$ | Unlikely / short duration | - | IEC 60079-10-1 |
| $EPL$ | Equipment Protection Level (Ga/Gb/Gc) | - | IEC 60079-0 |
Sources
- IEC 60079-0 / 60079-10-1.