Wärtsilä has secured an order from China’s Hudong-Zhonghua Shipbuilding for the delivery of LNG reliquefaction plants and gas-handling systems to four LNG carriers being built at its yard.
Wärtsilä’s sytems will be installed on ships owned by Bermuda-based Teekay Corporation, China LNG Shipping (CLNG), CNOOC Energy Technology Co of China and BW Gas of Norway.
The plant is designed to reliquefy 70% of the boil-off gas from the ships’ LNG cargo and return it to the cargo tanks. The remaining volume will be used by the engines’ gas-handling system for propulsion purposes.
As the system is prefabricated in skid modules, it can be easily installed onboard and hooked-up. In addition, it can be stopped when the cargo pumps are in operation in order to reduce the need for extra generator capacity.
Wärtsilä Ship Power flow and gas solutions vice-president Timo Koponen said: "Wärtsilä was selected because we were able to offer the best technical solution with the lowest capital and operational expenditures.
"Our in-house know-how and experience is unmatched in the industry, which is why the leading gas carrying operators consistently opt for Wärtsilä’s state-of-the-art solutions."
Wärtsilä will deliver engineering support, system responsibility and associated process guarantees for both of its systems.
The first vessel in the series is expected to be delivered in September 2017, while the other two will be in 2018. Delivery of the last ship is scheduled for January 2019.
Image: Wärtsilä’s reliquefaction plant will process 70% of the boil-off gas from the ships’ LNG cargo. Photo: courtesy of Wärtsilä.