Inert Gas - O₂ ≤ 8 % Check
Check oxygen concentration in inert gas output and cargo tank atmosphere per SOLAS II-2 Reg. 4: ≤ 5 % at IG deck seal output, ≤ 8 % in any tank, positive pressure maintained.
Compliance
Compliant
Formula, assumptions, and limits
SOLAS II-2 Reg. 4 absolute limits; most operators maintain tanks at O₂ ≤ 5 %. Tank pressure must remain positive during discharge to prevent atmospheric ingress.
Symbol legend
| Symbol | Meaning | Unit | Source |
|---|---|---|---|
| IG output oxygen | %vol | fixed O₂ analyser | |
| Tank atmosphere oxygen | %vol | portable O₂ meter | |
| Tank gauge pressure | mbar | tank PG |
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