【作者】

Fabian Kock

【摘要】

论文已在中国上海举行的2013年CIMAC大会上发表，论文的版权归CIMAC所有。Recently the Marine Environmental Protection Committee(MEPC) of the International Maritime Organisation (IMO) adopted guidelines addressing additional aspects to the NOx Technical Code 2008with regard to particular requirements related to marine Diesel Engines fitted with Selective Catalytic Reduction(SCR) systems. Following these guidelines acombined engine and SCR may be tested separately in cases where the combined system can neither be tested on a test bed due to technical and practicalreasons nor an on board test can be performed fully complying with the test requirements detailed in the NOx Technical code 2008. The certification procedureto be processed in such instances has been referred to as the ' Scheme B approach'. In particular, starting from January 1st,2016, when the third stage of emission limits for nitrogen oxides(Tier Ill) shall apply to new buildings when operating in an Emission Control Area(ECA), the new guideline and the Scheme B approach will impose a strong challenge for engine and SCR manufacturers, ship operators and certifiers (Recognised Organisations /classification societies) from a technical and operational point of view. Germanischer Lloyd(GL), acting as a Recognised Organisation for more than 90 flag states, has a strong interest in a lean and inviolable introduction of the legislation imposed by IMO. Thus, GL has started to accompany and supervise the design and installation of Marine Diesel Engines fitted with SCR systems applying the Scheme B approach at an early stage on a number of pilot installations in order. Moreover, GL's accredited laboratory for' Exhaust Emission Measurement and Chemical Analyses' has long lasting experience in measuring the exhaust gas emissions from Marine Diesel Engines fitted with SCR systems on board of vessels which have to follow the Swedish NOx tax regulation and therefore has a deep insight into the long term in-service experience SCR manufacturers and ship owners have with this kind of systems. This presentation aims to introduce latest experiences in measuring, survey and certification of gaseous emissions from Marine Diesel Engines fitted with SCR. The presentation evaluates technical solutions for exhaust gas after treatment systems from the perspective of a classification society with a strong focus on its technical, operational, organizational and administrative challenges. In particular the applicability of the new Scheme B' approach provided by IMO concerning the combined certification of engines and SCR systems tested separately is examined critically on the basis of a number of practical examples.

【会议名称】

第27届CIMAC会议

【会议地点】

上海

【下载次数】

1

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