New IMO guidance for managing challenging ballast water quality
The purpose of this guidance is to assist ships to comply with the BWM Convention and the D-2 discharge standard when a type-approved ballast water management system (BWMS) encounters operational limitations or has difficulty meeting operational demand in challenging water quality (CWQ) conditions. This applies also when the BWMS has been properly installed, operated and maintained.
Recommendations:
Ship owners/managers are encouraged to familiarize themselves with the new IMO guidances on managing challenging ballast water and on the temporary storage of treated sewage and/or grey water. Owners/managers are encouraged to start preparing for implementation of these guidances by amending the BWMP for their ships.
https://www.dnv.com/maritime/ballast-water-management/
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