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Thursday, September 26, 2019 

Hyundai Heavy Industries has now received a General Approval from LR (Lloyd's Register) for the company's own-design LNG cargo tank, known as HiMEX.

The General Approval was issued at the recent Gastech exhibition in the US. HHI points out that General Approval is a higher level of approval issued by LR than AiP (Approval in Principle). Based on this, HHI plans to complete the full demonstration process of HiMEX by 2020.

HiMEX is a membrane-type LNG cargo tank with full secondary barriers, to an HHI-developed corrugation shape design, claiming the highest level of structural stability to tolerate significant temperature variations from room temperature to an extreme cold environment (-163 deg C) and to withstand sloshing of LNG caused by hull movement in rough seas.

At Gastech, HHI Group unveiled the latest achievements of its optimal solution for LNG carriers built on its own developed high-efficiency LNG fuel supply system (Hi-SGAS) and a single mixed refrigerant system (SMR), as well as innovative technologies for boil-off gas treatment, including an in-tank mixing system to help minimise the generation of boil-off gas by inducing convection in an LNG tank and a buffer tank system which uses a subsidiary storage tank to liquify and store boil-off gas.

“This new LNG system recently showcased and the General Approval granted by LR mean that our world-class technical excellence has been once again recognized,” said an official of HHI Group. “While staying committed to further advancing LNG-related technologies in conjunction with leading international providers of classification, we will also work on new technologies for future ship fuels and propulsion systems to enable decarbonization in shipping.”

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