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MOL confirms NOx-reducing SCR system efficacy in shipboard tests

14 March 2014

Mitsui O.S.K. Lines, Ltd. announced that the company installed Selective Catalytic Reduction (SCR) systems on the power generators aboard the MOL-owned and operated Capesize vessel Awobasan Maru and confirmed that after catalytic reduction the NOx in exhaust emissions meet Tier III regulations set by the International Maritime Organization (IMO).

With the cooperation of Yanmar Co., Ltd., MOL installed SCR systems on the vessel to be operational from its delivery in December 2013. Since then, the systems have been operated for more than 1,000 hours of testing each.

Fuel for the power generators being tested was selected to match the type that would be available in Emission Control Areas (ECAs) and would meet future reduce sulfur regulations as well. The systems were evaluated during normal generator operation under normal steaming conditions and under estimated future stricter regulations.

These operational evaluations will continue for two years; MOL plans to conduct tests with C heavy fuel oil (HFO) as well.

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