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DSME installs high manganese steel LNG bunker fuel tank on DF VLCCs

19 Oct 2022

Daewoo Shipbuilding & Marine Engineering (DSME) on Friday (14 October), in a world’s first application, installed a high manganese steel liquefied natural gas (LNG) bunker fuel tank to two dual-fuel very large crude carriers (VLCCs). 

DSME also announced that it held a simultaneous naming ceremony on 13 October for both VLCCs. 

DSME and POSCO have jointly developed the tank manufacturing technology for 10 years, from pretreatment to welding to use high manganese steel to build an LNG fuel tank.

“Through this, Korea’s unique LNG fuel tank ecosystem, centered on high manganese steel, was established to secure national competitiveness,” the firm said. 

DSME installs high manganese steel LNG bunker fuel tank on DF VLCCs

Until now, materials such as Invar (nickel alloy steel), aluminum, and stainless steel have been used for cargo holds and fuel tanks that can withstand the cryogenic temperature of minus 163°C. 

However, they had disadvantages such as high price, difficult work process, and low strength. 

“The high manganese steel LNG fuel tank overcomes all these shortcomings. High manganese steel, a new material, is attracting attention as a next-generation material for LNG cargo holds because its price is lower than that of existing materials, and it has high strength and abrasion resistance as well as performance at cryogenic temperatures,” the company elaborated. 

Daewoo Shipbuilding & Marine Engineering President Park Doo-seon, who attended the naming ceremony, said: “We have proven once again the competitiveness of DSME’s eco-friendly shipbuilding technology by building the world’s first dual-fuel VLCC equipped with an LNG fuel tank made of high manganese steel.” 

“We will do our best to secure overwhelming technology through development.” 

Manifold Times previously reported DSME installed a high manganese steel LNG bunker fuel tank to an ultra-large crude oil carrier.

Related: Korea: DSME installs high manganese steel LNG bunker fuel tank on ULCC
Related: DSME cinches KRW 1 trillion contract for 10 LNG-fuelled ULCC newbuilds


Photo credit: Daewoo Shipbuilding & Marine Engineering
Published: 19 October, 2022

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