LNG Containment System Upgrade DNV Qualified

Press Release
Tuesday, October 09, 2012

GTT’s Mark III LNG cargo containment system reduces the boil-off rate from LNG carriers by one third.

Mark III is GTT’s well-established containment system. This has now been further developed to reduce the boil-off rate from 0.15% to 0.10% of the cargo volume per day.

The common industry practice has been to build LNG carriers with boil-off rates of 0.15% of the cargo volume per day, reflecting the typical need for boil-off gas as fuel on board. The Mark III Flex system has been developed in response to the reduced need for fuel gas due to the improved efficiency and changed operational practice of LNG carriers.

For current standard LNG carrier designs with a cargo capacity in the range of 160,000-170,000 m3, the 0.05% reduction in the boil-off rate is equivalent to 85 m3 or 36 tonnes per day.

The improvements have been achieved by increasing the containment tanks’ insulation thickness from 270 mm to 400 mm. This change in thickness effects the design of system elements that penetrate the insulation, such as the lower pump tower support and gas dome. The modified proportions of the insulation panels have a potential effect on the loading of the secondary barrier. The new system also implements GTT’s modified liquid dome design.

GTT has carried out an extensive qualification programme for the new system to ensure that the safety and reliability levels remain equivalent to or better than those of the conventional Mark III system.

Approval in Principle (AiP) was granted by DNV in June 2011. In mid-September this year, the system was given DNV’s General Approval for Ship Application (GASA), which means it is qualified for shipboard use.

So far, 27 new vessels with the new Mark III FLEX system have been ordered from Korean yards. Twenty of these will be built to DNV class.
 

Maritime Reporter March 2014 Digital Edition
FREE Maritime Reporter Subscription
Latest Maritime News    rss feeds

Technology

Schlumberger Announces Q1 Results

Schlumberger Limited (NYSE:SLB) today reported first-quarter 2014 revenue from continuing operations of $11.24 billion versus $11.91 billion in the fourth quarter of 2013, and $10.

RS at SEA JAPAN 2014

Russian Maritime Register of Shipping (RS) was the only Russian company to take part in SEA JAPAN 2014 exhibition and conference – one of the major exhibitions of the maritime industry.

When Will Deep Sea Mining Commence? The Robot is Ready

The world's first deep sea mining robot sits idle on a British factory floor, waiting to claw up high grade copper and gold from the seabed off Papua New Guinea

LNG

OMV CEO Warns Against More Russia Sanctions

Europe should avoid more sanctions against Russiaover its role in Ukraine and continue to pursue dialogue with Moscow, the chief executive of OMV , the longest-standing

Petrobras, Mitsui Study South Brazil LNG Import Terminal

Brazil's state-run oil company Petroleo Brasileiro SA and Japanese trading house Mitsui Corp will study building a liquefied natural gas (LNG) terminal in the country's southernmost state,

Ukraine launches restricted operation

Ukrainian forces launched a "special operation" on Tuesday against separatist militia in the Russian-speaking East, authorities said, although aside from a landing

Classification Societies

DNV's accredatation for Neosho Memorial

Neosho Memorial Regional Medical Center, Chanute, has completed a new accreditation process from Det Norske Veritas Healthcare. By earning accreditation, Neosho

ClassNK Approves Fillet Welding Consumable

Classification society ClassNK announced that it has granted type approval for the new MX-200F welding consumable, developed by Kobe Steel Co., Ltd. (KOBELCO) to

Intesa Sanpaolo, Vei Capital Invest in RINA

Intesa Sanpaolo, through the Merchant Banking Management of its Corporate and Investment Banking Division, and VEI Capital, investment company of Palladio Finanziaria

 
 
Maritime Careers / Shipboard Positions Maritime Contracts Naval Architecture Pipelines Pod Propulsion Port Authority Salvage Ship Electronics Ship Repair Shipbuilding / Vessel Construction
rss | archive | history | articles | privacy | contributors | top maritime news | about us | copyright | maritime magazines
maritime security news | shipbuilding news | maritime industry | shipping news | maritime reporting | workboats news | ship design | maritime business

Time taken: 0.1341 sec (7 req/sec)