LNG Transfer Systems – What you need to know

The LNG market place has increased significantly over the last few years

Strong LNG demand has seen rises in the shipping rates of LNG across the world and with global demand for LNG forecast to increase by a factor of 50% by 2020.
LNG as a fuel for shipping offers huge advantages over conventional oil-based fuels, and with the need to comply with new air emission limits, LNG technology is proven and smart way to go.
With this increased use of LNG powered vessels ranging from tug boats to ocean going tankers and cruise liners technology needs to be put in place to fuel these vessels.
Market research conducted by Mordor intelligence has estimated that the global cryogenic market would reach $23 B by 2021

LNG Transfer vessel

LNG Transfer Systems
There are several ways to transfer LNG both from and to ships using LNG which includes, ship to ship transfers, LNG ship to shore, LNG vessel Bunkering.

LNG ship to ship transfer

When using ship to ship transfers which are also known as LNG STS a feeder vessel is supplied from an LNG tanker.

Hose Transfer systems
When transferring LNG, houses are often used which will go from the tanker vessel to the ship needing fuel. The transfer system should incorporate an emergency release system to ensure if there were to be a problem during the transfer it could be shut down immediately before any spill occurred.
Hose transfer systems are a more cost effective and more flexible way of transferring from ship to ship, rather than conventional loading arm systems, but must be combined with ERS to ensure safety.

Loading Arm Systems
Loading arm systems for fuel and LNG transfers have been used for many years, and scores of studies have been done on the possible effects of accidental release of LNG due to loading arm failure. Great stresses can be placed on loading arms and with temperatures of -163 degrees Celsius present problems with thermal shock and ice build-up are also a problem on transfer arms and equipment.

Which systems to use for LNG Transfer
Loading arm systems have been deployed using all-metal arms with swivel joints to accommodate the required six degrees of movement that can occur due to the motions of the ship and the terminal. Loading arms can be deployed only in the mildest of offshore involvements.

Over the last few years considerable developments have been made to alternative loading systems based on flexible cryogenic hoses, which can be used in much harsher environments. When these hoses are combined with LNG emergency release couplings fitted within the transfer line, these connections offer double valve closer to ensure complete safe shutdown during an event.

Resources

LNG transfer safety systems

One of the leading companies offering LNG safety transfer systems is KLAW LNG who are a global leader in the design, manufacture and supply of efficient LNG transfer systems.

LNG Technology and Solutions

For design and technical consultancy services in the LNG field which includes the first LNG ferry in the UK, Houlder Limited offer innovated solutions to the small to mid- scale LNG sector.

LNG World Shipping

If you are looking for what is happening in the LNG shipping world this site will show you. The order rates for new LNG carriers has started well in 2018 with number up. For more information click here for full details.

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