China’s COSCO shipbuilding group has been granted USCG type-approval for its Blue Ocean Shield system
The application for type-approval was granted earlier in 2019. Blue Ocean Shield is described as a mechanical filter, medium-pressure UV disinfection system comprising:
When ballasting, Blue Ocean Shield removes sediments and micro-organisms greater than 50μm. Ballast water then enters the UV reactor, an appropriate dose of UV ray is generated to inactivate the organisms, such as algae and bacteria, in the water. Once treated, the ballast water arrives in the ballast tank.
When de-ballasting, the filter is automatically bypassed, the ballast water goes directly through the UV unit and receives a second UV treatment, ensuring discharged water in compliance with the convention and USCG’s requirements.
Blue Ocean Shield BWMS is available in seven base models with flow rates ranging from 100 m3 to 1,200 m3. Combining base models into sets gives flow rates in excess of 4,000 m3.
COSCO Shipbuilding group’s Blue Ocean Shield BWMS USCG type-approval may now allow it to be the default BWMS offered on the maker’s list to shipowners ordering vessels in state-owned Chinese shipbuilding groups.
The current list of USCG type approved ballast water management systems (A-Z):
|Alfa Laval||alfalaval.com||PureBallast 3.0 / 3.1|
|Alfa Laval||alfalaval.com||PureBallast 3.2|
|COSCO||cosco.com||Blue Ocean Shield|
|Optimarin||optimarin.com||OBS / OBS Ex|
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