Tank Cleaning - Machine Cycle Time
Estimate tank-cleaning machine programme time for a single cargo tank using butterworth/washing-machine coverage rate - typical ISGOTT 6 figure.
Cleaning rate
204.0m²/h
Programme duration
8.8h
Formula, assumptions, and limits
Coverage factor depends on product (0.5 crude/sludge, 0.9 clean cargo), water temp (hot water faster), and machine type (Butterworth fixed vs programmable). Add purge and gas-free time separately.
Symbol legend
| Symbol | Meaning | Unit | Source |
|---|---|---|---|
| Tank internal surface area | m² | capacity plan | |
| Machine wash flow | m³/h | Butterworth spec | |
| Coverage factor | m²·h/m³ | ISGOTT tables | |
| Machines per tank | - | cleaning plan |