Check whether the oil content of overboard discharge from the 15 ppm Oily Water Separator is compliant with MARPOL Annex I Reg. 14 - assumes bilge holding tank, OWS flow rate, and alarm settings.
Formula
$$ \text{ppm}{effluent} < 15, \quad t{cal} \leq 12,\text{mo}, \quad V_{3-way} = \text{fail-safe} $$
Symbol legend
| Symbol | Meaning | Unit | Source |
|---|---|---|---|
| $ppm$ | Oil content in effluent | ppm | OCM/PPM sensor |
| $t_{cal}$ | Calibration age | months | service certificate |
| $V_{3-way}$ | 3-way recirculating valve | - | maker manual |
Sources
- MARPOL Annex I Reg. 14.
- IMO MEPC.107(49).