Cross-Flooding Equalisation Time
Time to equalise an asymmetrically flooded tank pair through a cross-flooding duct - must be ≤ 10 min per MSC.245(83) / MSC.362(92).
Duct discharge
1.302m³/s
Equalisation time
3.84min
MSC.245(83) compliance
Compliant (≤ 10 min)
Formula, assumptions, and limits
$$\dot V = C_d \cdot A \cdot \sqrt{2 g h}, \quad t = \frac{V}{\dot V}$$
Simplified - actual calculation integrates as head falls. MSC.245(83) / MSC.362(92) method uses step-wise integration for transient-stage evaluation. Target ≤ 10 min final + transient-stage heel checks.
Symbol legend
| Symbol | Meaning | Unit | Source |
|---|---|---|---|
| $V$ | Flood-volume to transfer | m³ | layout |
| $A$ | Duct cross-section | m² | arrangement |
| $h$ | Head differential | m | initial heel × tank geometry |
| $C_d$ | Discharge coefficient | - | duct design |
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