Cargo Tank - LEL / UEL Check
Cargo-tank atmosphere LEL / UEL check - must be either below LEL or inerted below O₂ threshold.
Status
Safe to enter / work
Formula, assumptions, and limits
HC LEL ≈ 1 % vol, UEL ≈ 10 %. SOLAS II-2 Reg. 4.5: cargo tanks kept < 5 % O₂. Entry checks: O₂ 21 %, HC < 1 % LEL, toxic < TLV.
Symbol legend
| Symbol | Meaning | Unit | Source |
|---|---|---|---|
| Lower Explosive Limit | %vol | ISGOTT | |
| Upper Explosive Limit | %vol | ISGOTT |