DRI - Passivation Requirement
Direct-Reduced Iron passivation check per IMSBC - (A, B, C) grade determines inerting / cooling requirement.
Requirement
Inert hold (O₂ < 5 %), monitor H₂
Formula, assumptions, and limits
$$\text{Req} = f(\text{DRI grade})$$
DRI(C) moisture-sensitive: can self-heat + release H₂. IMSBC DRI(B) schedule requires < 49 °C load temperature + inert atmosphere throughout voyage.
Symbol legend
| Symbol | Meaning | Unit | Source |
|---|---|---|---|
| $Grade$ | DRI grade A/B/C | - | IMSBC DRI schedule |
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