AET shuttle tankers to be equipped with scrubbers

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Norwegian Clean Marine will deliver its gas cleaning systems (EGCS) for two[ds_preview] new shuttle tankers being built for tanker operator AET at Samsung Heavy Industries in South Korea. AET has entered into a long-term contract with Statoil to operate the two specialised DP2-type shuttle tankers. The two vessels will serve oilfields in the Norwegian sector of the North/Barents Sea.

According to Clean Marine it is the only system currently on the market with true multi-stream exhaust gas handling. This means that all exhaust sources onboard – including boilers – are served by one common EGC unit without encountering an increase in back pressure. This is achieved by two fans and a gas recirculation mechanism integrated into the EGC unit, which ensures that pressure at the common gas meeting point is maintained at ambient level, irrespective of the amount of exhaust fed to the system.

Clean Marine offers a hybrid system that can operate in both open- and closed-loop mode. It differs from other systems since it uses caustic soda in both modes, which means vessels can operate in all types of water (including low alkaline and saline water) in either mode and without loss of efficiency. Furthermore, the use of caustic soda enables to meet the current pH limit for wash water discharges with good margin. As per the manufacturer the payback time constitutes less than one year when using MDO instead. Currently a Clean Marine EGCS is in operation and fully certified on the bulk carrier »Balder«.