4 Remedial and Corrective Actions
Clasification Society 2024 - Version 9.40
Statutory Documents - IMO Publications and Documents - Circulars - Marine Environment Protection Committee - MEPC.1/Circular.677 – Guide to Diagnosing Contaminants in Oily Bilge Water to Maintain, Operate and Troubleshoot Bilge Water Treatment Systems – (22 July 2009) - Annex – A Guide to Diagnosing Contaminants in Oily Bilge Water to Maintain, Operate and Troubleshoot Bilge Water Treatment Systems - Annex 5 – Post–treatment (OWS) Oil Sheen - 4 Remedial and Corrective Actions

4 Remedial and Corrective Actions

 ▸ Recirculate – more residence time may be needed.

▸ Flush system with hot water, re-engage and recirculate.

▸ Recirculate at lower flow rate.

▸ Inspect unit for bypass.

▸ Open, clean, and inspect system to determine cause of failure. Repair and service OWS. Repair, service or replace OCM Unclog or replace drains and/or piping to manufacturer’s and/or to system design standards.

▸ Retrofit with polishing and particulate filters (for acute conditions).

▸ Upgrade to a 107(49) unit (after considering the capacity, age, condition and/or quality of the existing OWS).

▸ Consult manufacturers’ manual(s) for filter/coalescer replacement.

Note: Consider designing and retrofitting the system for the addition of post-treatment modular polishing and particle filtering technology. Also, consider upgrading a 60(33) unit to a 107(49) unit. Specific recommendations for a particular post-treatment retrofit or an OWS system upgrade depend on the ship’s circumstances.

Parent topic: Annex 5 – Post–treatment (OWS) Oil Sheen
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