a day over three days, all the while processing high volumes of seawater. Chief technical officer for Optimarin, Kurt Steinsvik said of the results: “Although the water conditions were prone to rapid changes, the filters coped extremely well and maintained complete performance integrity.”
Installation With regards to installation of the BWT system, “based on the liability of the ship design plan,” Nilsen explains, “the owner can consider either a survey or 3D scan in order to investigate where a system can be installed. Te OBS itself can very easily be retrofitted as it comes with a modular design next to the option of a mounted skid version. Tis modular system can be installed in a large variety of ways, while mounted manifolds make it possible to stack the UV chambers in the most practical way.” While some system suppliers have chosen to create new and
different versions of their systems, Nilsen states that the OBS, offered in its modular and skid formats, will continue to be the core of Optimarin’s business, and more attributes will without a doubt be added or enhanced.
What lies ahead? States representing a further 6% of the world’s tonnage are still required to sign up to the IMO BWM Convention before it can be ratified. Nilsen speculates that current reasons for hesitation likely include unresolved questions and lack of guidance, robust sampling protocols and port state control tools. Some may not be convinced about the importance of BWT in general, or are awaiting a ‘final standard’ as they think that regulations might change. Meeting the IMO requirements is the basis of getting
type approval, says Nilsen, as Optimarin did in 2009. “Te OBS performed excellently during the tests and reached a 99.99% purification of the ballast water. We do not see changes in the requirements as a threat against the performance of our system.” Optimarin is in the process of obtaining USCG alternative
management system (AMS) approval. Te actual approval will contribute in assuring users that OBS will meet the guidelines as currently set by the USCG, says Nilsen. While current information does not yet lay out the final criteria to be met by IMO, in the event of more stringent rules, Optimarin will respond in order to meet requirements. At present, ballast water sampling procedures have yet to be
finalised, however, once the BWM Convention has come into force, Optimarin does not think that any port state will hold a shipowner, who has used a type approved system in good faith, criminally responsible for the discharge of organisms. “Although a final sample and test procedure still has to be
established, from user’s perspective, Optimarin would like to emphasise the need for a quick and simple, yet reliable test programme,” says Nilsen. At the time of writing the 65th session of the Marine
Environment Protection Committee (MEPC 65) was set to discuss BWM-related guidance including the topic of ballast water sampling and analysis for trial use. SBI
Ship & Boat International May/June 2013
GEA Westfalia Separator BallastMaster ultraV
Just add water
With the GEA Westfalia Separator BallastMaster ultraV, it is very simple to ensure that there is only water in your ballast tanks – with no harmful organisms such as plankton, bacteria or viruses. Everything beneath the waves is under control, so you don’t have to worry about it.
4 – 7 JUNE 2013 OSLO, NORWAY HALL: E
GEA Westfalia Separator Group GmbH
Werner-Habig-Straße 1, 59302 Oelde, Germany Phone: +49 2522 77-0, Fax: +49 2522 77-1778
ws.info@
gea.com,
www.gea.com
engineering for a better world 57
MA-221-1-019
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