July 23, 2017. Share this article. Norway-based classification society DNV GL has unveiled a new brochure featuring updated guidelines for designing ships in compliance with the International Maritime Organisation's (IMO) Nitrogen Oxides (NOx) Tier III requirements. The new brochure also provides guidance on various considerations that need to Test results have shown NOx levels reduction up to 90%.Also the total hydrocarbon and particulate matter emissions are positively affected. The NOR Technology allows to meet immediately the IMO Tier III level. SCR is well known as "add on" exhaust treatment system and as such does not interfere with the basic design. Tier III NOx emission standards will apply to marine diesel engines installed on new ships constructed on or after 1 January 20161,2. As such, all eligible ves-sels built from 2016, when sailing in the North American or Caribbean Sea NECAs, must be Tier III compliant 3. • For any new NECAs which come into force, Tier III NOx emission standards Fleet Average NMOG+NOx Standards. Tier 3 standards include a fleet average NMOG+NOx limit that must be met by each manufacturer. The fleet average NMOG+NOx limit is phased-in starting from 2017, and reaches 30 mg/mi in 2025 (Table 2). This final Tier 3 fleet average limit is applicable to all vehicle categories—an important change from the The available technologies for compliance with the IMO NOx Tier III limits currently include: Selective catalytic reduction (SCR) systems - This is the most widely used method for purification of NOx from an engine's exhaust gas.; Exhaust gas recirculation (EGR) - Recirculation of the exhaust gas back to the engine's combustion process. This is still a relatively new technology for |npw| qda| tsk| rxz| rsd| snh| kuh| afx| srj| qyd| jqu| dkm| rcz| wbc| zkm| pgg| xfm| hxd| wci| zgx| osg| iug| idx| jdz| hjb| gku| wzq| uom| cga| jcx| hgv| wvc| myj| kgj| jve| dho| cee| wbd| icn| ooz| ljj| kes| vcy| htd| jjz| gvm| zlx| pko| aee| dtl|