Tag: NOx Tier III

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Trawlers specified with MAN’s SCR System

In connection with the recent announcement of the construction of three wetfish trawlers for HB Grandi, the Icelandic fishing concern, MAN Diesel & Turbo has announced that the newbuildings’ MAN main engines will also feature its SCR (Selective Catalytic Reduction) system. The company states that the system will enable the trawlers’ IMO Tier II-compliant engines to fulfil the strict IMO Tier III NOx emission requirements. Vilhjalmur Vilhjalmsson, CEO of HB Grandi said: “When we decided to renew our fresh-fish fleet, we immediately focused on the task of curtailing the ships’ power requirements, both in terms of the propulsion plant as well as electricity production, so as to make the exhaust gas as clean as possible.” Vilhjalmsson added that HB Grandi deliberately pursues a green company profile and that its focus on clean and responsible fishing ultimately led to MAN technology being chosen for the trawlers. As such, HB Grandi’s profile suited the minimal environmental footprint from operations, including the cleaner exhaust gasses and NOx reduction that the MAN package offers. A further advantage of choosing MAN was the relatively straightforward integration of engine, propeller, propulsion controls and SCR system that equipment from the same manufacturer entails. MAN Diesel & Turbo ...

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GE Delivers fisrt IMO Tier III Engines to Northern European Market

GE Marine announced that Bastø Fosen has chosen GE Marine’s International Maritime Organization (IMO) Tier III compliant marine diesel engines for new and re-powered vessels. Bastø Fosen will be among the first customers in Northern Europe to operate GE’s diesel engines that meet IMO Tier III emissions standards without Selective Catalytic Reduction (SCR) aftertreatment or urea injection. Bastø Fosen has ordered six, eight-cylinder in-line engines for three new ferries and two, 16-cylinder V engines to re-power two existing vessels– Bastø I and Bastø II. The re-powered vessels are scheduled to begin operating in early 2016, and the new vessels will launch later that year. “We chose the new GE Marine engines for their ability to meet IMO Tier III emissions requirements without urea aftertreatment. We value their reliability and low fuel consumption,” said Stein Andre Herigstad, CFO Bastø Fosen. Bastø Fosen, part of Torghatten Group ASA, is a major ferry operator in Norway providing annual transit service to more than 1.7 million vehicles and 3.4 million passengers. Local support for Bastø Fosen will be provided by GE’s distributor, Turner EPS. “We are extremely pleased Bastø Fosen selected GE. We look forward to providing our advanced technology IMO Tier III solution, ...

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GE Marine’s Tier 4 Marine Diesel Engine Receives EPA Certification

GE Marine’s marine diesel engine received U.S. EPA Tier 4 Certification. GE met the emissions requirements through non-Selective Catalytic Reduction (SCR) technology that requires no urea-based after-treatment. The Company is also working towards U.S. EPA Tier 4 and IMO Tier III Certification for additional models and families of its marine engines utilizing the same non-SCR technology. “Achieving this certification validates our unique ability to meet Tier 4 emissions requirements without the disadvantages of after-treatment. Our non-SCR solution provides substantial operational benefits over urea-based solutions for the workboat marketplace,” said Afra Gerstenfeld, General Manager of GE Marine. A study conducted by Jensen Maritime, was commissioned by GE to compare its U.S. EPA Tier 4 and International Maritime Organization Tier III compliant in-engine, urea-free solution to a competitor’s solution that requires urea based after-treatment. It concluded that, for operation on a typical line-haul tug, GE’s solution: Takes up about only 25% of the engine room space required by the competitive solution;Weighs about only 25% of the competitor’s solution; and Does not require additional onboard equipment/storage for urea or dockside support infrastructure for urea storage and processing. GE Marine is working to achieve U.S. EPA Tier 4 and IMO Tier III certification for ...

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Shipping must remain energy-efficiency in a low crude price environment

Ship efficiency remains just as relevant and important in a bearish oil market as it does when shipowners have to pay over US$600 for a tonne of Heavy Fuel Oil. “With crude oil prices at their lowest since April 2009, the temptation is to put your foot on the gas and speed up a bit but this is not the way forward. When oil prices are low shipowners can benefit more fully from energy-saving technologies,” said Hakan Ozcan, the Chief Financial Officer of Ecoships, the technical ship management arm of Newport Shipping Group, “Admittedly bunker fuel will continue to be the largest single operational cost for shipowners, but with fuel prices continuing to drop, profit and loss accounts will improve, providing owners with the resources needed to re-invest in new ship designs, equipment and technologies capable of reducing fuel consumption even further. It’s a win-win situation for the merchant fleet.” Whilst Ozcan does not suggest that the industry embarks on the kind of newbuilding spending spree that will prolong or perpetuate over-capacity, he does believe shipowners have a commercially-viable opportunity to replace ageing, less efficient tonnage with vessels capable of meeting increasingly stringent environmental regulations. “It just makes economic sense. ...

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YANMAR America Announces First EPA Compliant Commercial Marine Engine

YANMAR America has announced the introduction of its new EPA Tier III compliant commercial marine diesel engine. Rated at 755 mHP and 1900 RPM, the new 20.38-liter 6AYAM-ET uses a fully mechanical control system for easy servicing and reliable performance. The four-cycle, in-line six-cylinder 6AYAM-ET offers several key features and benefits that make it a top choice for commercial vessel operators. First, the torque characteristics allow for stable cruising with the least amount of speed reduction even with sudden load changes. The engine also offers its globally acclaimed low fuel consumption and a continuous rating suitable for river push boats, tugboats, trawlers and other applications with uninterrupted operations or load cycles. Plus, a 500-hour service interval aided by a purpose-built marine design featuring a long stroke, water cooled exhaust manifold, special coated liner and nodular cast iron piston with coated piston rings assure minimum downtime to keep vessels on the water and out of the shop. To comply with emissions regulations, the 6AYAM-ET uses an internal exhaust gas recirculation (EGR) system. This design does not require any external control devices or significant engine structure changes. In addition, the micro-sized multiple holes in the all-new injectors produce an even finer fuel ...

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DSME orders more dual fuel engines

MAN Diesel & Turbo has received an order for four MAN B&W 5G70ME-GI engines in connection with Daewoo Shipbuilding & Marine Engineering Co., Ltd. (DSME) agreeing a deal with the BW Group to build two LNG carriers. The technical engine specification complies with IMO Tier II, with options to include remedies for Tier III compliance at a later stage. The 173,400 m3 vessels are scheduled for delivery in late 2017/early 2018 and will be built at DSME’s Okpo shipyard in Geoje, Korea. The deal represents the second LNG ME-GI contract for DSME after a previous order signed in 2012. Compliance with IMO Tier III regulations basically requires an 80% reduction in NOx emissions – compared to Tier I – within the designated emission control areas (ECAs) over a defined test cycle. MAN Diesel & Turbo has successfully developed two main approaches to comply with these challenges: Selective Catalytic Reduction (SCR), which involves the catalytically accelerated reaction of nitrogen oxides with ammonia to form water and nitrogen, and Exhaust Gas Recirculation (EGR), which works by recirculating a portion of an engine's exhaust gas back to the engine cylinders. Both methods enable compliance with the most stringent of regulations and give the ...

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MAN-powered vessel gets Tier III compatibility certificate

MAN Diesel & Turbo has been awarded a Tier III-compatibility certificate by the DNV-GL classification society for MAN 8L21/31 four-stroke engine aboard a DFDS Seaways ship with a retrofitted SCR (Selective Catalytic Reduction) system. While the engine alone meets IMO Tier II emission criteria, the SCR system for NOx reduction raises the whole system to the standard demanded by IMO Tier III rules. The vessel in question, the ‘Petunia Seaways' is a cargo ship that sails a regular North Sea route between Gothenburg, and Immingham, respectively Ghent for DFDS Seaways. Its SCR system greatly reduces the level of nitrogen oxides (NOx) from the engine's exhaust gas. Since September 2012, when one of Petunia Seaways' 8L21/31 auxiliary engines was retrofitted with a SCR system, it has played a major role in the testing of this new technology. As such, the system has proven daily that freight ships can now meet the strict emission levels laid down by IMO Tier III where NOx emissions have to be reduced in certain areas by 75% compared to current limits. "For the last 8,800 hours, this particular auxiliary engine of the Petunia Seaways has consistently met Tier III NOx limits under real life operating conditions ...

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ExxonMobil conducts Prince William Sound oil spill drill

On 13th September, ITOPF travelled to the wilds of Alaska to participate in a large-scale, Tier 3, oil spill exercise organised by SeaRiver Maritime Inc., a subsidiary of ExxonMobil. The event drew together over 430 people from a wide range of organisations including; Aleyska Pipeline Service Company, Alaska Maritime Prevention and Response Network, Alaska Department of Fish & Game, US Coastguard, US National Oceanographic & Atmospheric Administration, Alaska Department of Environmental Conservation, Prince William Sound's Regional Citizen's Advisory Council, native tribal representatives and ExxonMobil's response teams. The exercise scenario imagined a release of some 200,000 barrels of crude oil from a tank vessel in the middle of Prince William Sound following a collision with a fish processing vessel. Following notification of an incident, oil spill response resources were dispatched rapidly to the spill site and a command centre set up in Valdez. Operations continued around the clock for the next 60 hours. "It is 25 years since the EXXON VALDEZ oil spill" noted ITOPF's Dr Mark Whittington, "and the development of oil spill response capability in Prince William Sound since then has been impressive. The professionalism and enthusiasm that all the exercise's participants - industry, government agencies and the local ...

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