LR grants approval for HMD’s LNG cargo handling system

Hyundai Mipo Dockyard (HMD) has received approval in principle (AiP) from Lloyd’s Register for a cargo handling system design for a 6,600 m³ LNG bunkering vessel.

The design was jointly developed by HMD and the Hyundai Heavy Industries (HHI) Corporate Research Centre.

The system is designed for LNG bunkering to a LNG-fueled ship, as well to supply fuel gas to the dual-fuel main engine and managing Boil-Off Gas (BOG). The cargo pumps are capable of bunkering at a maximum of 1,100m³/h to a LNG-fueled ship and fuel gas to dual-fuel main engine can be supplied by BOG compression or LNG vaporing. BOG returned from the LNG-fueled ship during bunkering can be burnt in the dual-fuel engine or collected inside the Type C cargo tank.

Insulation for the cargo tank is designed for lower BOG generation. BOG generated from the cargo tank is less than the fuel gas consumption of the main engine at the normal continuous rating. This means that all BOG can be utilised by burning in the main engine so that the cargo tank pressure and temperature can be managed in a stable manner.

    A HMD official said: “HMD and the HHI Corporate Research Centre expect that a cargo handling system for larger LNG bunkering vessels and LNG carriers can also be developed based on this approved design for a 6,600 m³ LNG bunkering vessel”.