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Marine Purifier - Sludge Tank Sizing

Required sludge tank capacity from fuel/lube oil purifier sludge generation rate and voyage segment between disposal.

PurifierSludgeTank sizing
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Formula, assumptions, limits

Vsludge=Vfuelptk/100V_{sludge} = V_{fuel} \cdot p \cdot t \cdot k / 100

V_sludge in cubic metres, V_fuel daily fuel/oil throughput, p sludge generation as percent of throughput (typically 0.5 to 2 percent for HFO purifier, 0.2 to 1 percent for lube oil purifier), t voyage segment in days, k reserve factor 1.1 to 1.3. Sludge is held on board until reception facility delivery; the sludge tank must hold all sludge generated between disposal opportunities. MARPOL Annex I provides the regulatory framework for sludge handling.

Symbol legend

SymbolMeaningUnitSource

Daily fuel/oil throughputm³/dayoperator data Sludge percent of throughput%operator data Voyage segmentdaysvoyage plan Required sludge tankm³computed

In short

Required sludge tank capacity from purifier sludge generation rate.

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