• 2014 March 31 14:31

    GTT North America receives AIP for Membrane LNG Bunker Barge

    Houston-based GTT North America (GTTNA), US subsidiary of French engineering and technology company GTT (Gaztransport & Technigaz SA), has received approval in principle from ABS for the design of a 2,200 cubic meter liquefied natural gas (LNG) bunker barge. The distinctive design incorporates GTT’s proven membrane Cargo Containment System (CCS), which is utilized in 70% of the global LNG carrier fleet and nearly 90% of LNG carrier projects on order, the company said in its press release.

    Leveraging over five decades of LNG storage and maritime transportation experience, GTT developed the membrane LNG bunker barge to demonstrate the efficient storage of LNG and safe, reliable management of Boil-Off Gas (BOG) in an unmanned push barge application. The barge was designed for use in bunkering operations including ship-to-ship LNG transfers or LNG bulk transport in US inland waterways, harbors, and intra-coastal service. The barge could operate as a mobile refueling resource or be moored temporarily to serve as a refueling station.

    “An important step in the wide-range adoption of LNG as a marine fuel is the development of bunkering infrastructure that can adequately meet the various operational needs of vessels,” said ABS Director of US Gas Solutions, Roy Bleiberg. “The use of the LNG bunker barge will be a critical part of infrastructure development and this design, which leverages proven GTT technology, is certainly a concept that LNG stakeholders should consider.”

    The CCS selected for the barge was GTT’s proprietary Mark III Flex system, an enhancement of the Mark III system that allows for improved thermal and structural performance of the CCS. The Mark III membrane CCS consists of a cryogenic liner directly supported by the vessel’s inner hull, which allows for maximum volumetric utilization of the available cargo space. This liner is composed of a primary metallic membrane fastened atop a prefabricated insulation panel that includes a complete secondary membrane.

    The GTT membrane LNG bunker barge will be capable of loading 2156 m3 (@98%) or 570,000 US gallons within 4.5 hours and towed at maximum speed of 8 knots in an efficient footprint: 64.2 m (212 ft) overall length, 14.8 m (48.5 ft) breadth, 7.2 m (15.7 ft) depth, and 2.6 m (8.5 ft) fully loaded design draft. The dimensions and gross tonnage of approximately 1440 GT afford the GTT membrane LNG bunker barge greater maneuverability and access throughout inland and intra-coastal waterways.

    A distinguishing feature of the GTT membrane LNG bunker barge is the management of natural BOG through small-scale reliquefaction units. The StirLNG-4 cryo-cooler unit from the Netherlands-based Stirling Cryogenics was the basis of the boil off management system design.

    “This barge design, now approved in principle by ABS, provides a robust solution for boil off gas management, an essential requirement for any atmospheric LNG storage system. The design is a major step forward in bringing the coldest cargo with the highest stored energy value to the US LNG fuel market in a safe manner.” said Allyn Risley, Chairman, GTT North America.

    Alameda, CA-based Herbert Engineering Corp. (HEC) was commissioned to develop the hull and preliminary machinery design scope and Houston-based CH-IV International to develop the cargo handling system (CHS) design scope.

    ABS Consulting also assisted in the development of the GTT membrane LNG bunker barge project.


2017 July 23

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2017 July 21

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16:46 Australian LNG exports to surge 22% this year, expert says
16:35 Duke University secures funding of a new marine lab RV construction
16:00 Workshop in Tunis briefed participants on functioning, operation and use of LRIT system
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2017 July 20

18:35 Wärtsilä reports order intake and net sales growth in H1 2017
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17:35 UK's MCA conducts exercise for response to spills from shipping and offshore installations
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16:35 LUKOIL Board of Directors approves members of Company Management Committee
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15:31 HHI offers smart ship ICT technology for better navigation and management of ships
15:12 Boskalis contracted to build Stockholm Norvik Port quay wall in Sweden
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14:32 BV granted approval in principle for Wison’s 50MW floating LNG power supply barge
14:06 Cargo shipments by North-Western Shipping Company up 5% to 2.76 mln t in HI’2017
13:40 Marine Recruiting Agency in HI'17 increased the number of graduates by 58%
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