UV Dose for BWMS (rough empirical estimate)

Order-of-magnitude UV dose for a BWMS reactor as a function of lamp UV-C output, flow, and UV transmittance. Empirical fit only: actual BWMS dose-credit requires biodosimetry.

Ballast WaterUV

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This calculator requires JavaScript to compute its result. The formula, symbols, and regulatory sources are shown in the Formula section below.

Formula, assumptions, and limits

\text{Dose} \approx \frac{P \cdot 3600}{Q \cdot \text{volume}} \cdot T_{UV}^{1.5}

Symbol	Meaning	Unit
$P$	Lamp UV-C output	W
$Q$	Flow	m³/h
$T_{UV}$	UV transmittance at 254 nm

Source: MEPC.300(72) BWMS Code

In short

UV dose (mJ/cm\u00b2) delivered by a BWMS reactor at a given flow and lamp power, with UV transmittance correction.

Learn the theory BWM Convention 2004: Ballast Water Management