Niigata diesel engine combined with Selective Catalytic Reduction (SCR) system is confirmed by ClassNK to meet IMO NOx Tier III Limit.

 NIIGATA Power Systems Co., Ltd., (Niigata) recently performed NOx measurement tests of the 28AHX medium-speed marine diesel engine combined with the Selective Catalytic Reduction (SCR) system for showing to comply with International Maritime Organization (IMO) NOX Tier III Limit (more than 80% reduction of NOX emission from Tier I Limit). Nippon Kaiji Kyokai (ClassNK) confirmed that it complied with IMO NOx Tier III Limit and issued the Statement of Fact on 7th August, 2014.

 Niigata has delivered the first SCR system for the marine propulsion engine in 1995, nearly 20 years ago, which is still working. Based on such a successful record, the certification of engines with SCR systems in an expanded range will be continued. In order to meet the demand towards implementation of the IMO Tier III Limit in 2016 in the Emission Control Area (ECA), the production capability of SCR systems will be organized.

 Niigata has a complete line of SCR systems for marine diesel engines ranging from 550 to 6,600 kW for both main propulsion and auxiliary engines. Development of this SCR system utilizes the part of technologies and findings for compact design in the research undertaken by Niigata for “Super-clean Marine Diesel” Project of the Japan Ship Machinery & Equipment Association (JSMEA) financially supported by Nippon Foundation under initiative of the Ministry of Land, Infrastructure, Transport and Tourism (MLIT).