DH Industries Contributes To Successful Launch of LNG Barge

The successful completion and delivery of Clean Jacksonville, the first LNG bunker barge built in North America, was announced by Conrad Industries, Inc. in August and celebrated by many contributing companies and organizations.

Included in the collaboration was CSA member DH Industries BV. Its boiloff gas (BOG) management system for the barge had previously tested successfully, with six StirLNG-4 cryogenerators then installed on board of the LNG bunker barge to reliquefy the boiloff gas. DH reported that all the final units performed as expected during gas trials, with each one maintaining operational pressure below given set points within the membrane tanks.

Six StirLNG-4 cryogenerators. Image: DH Industries

Six StirLNG-4 cryogenerators. Image: DH Industries

The StirLNG-4 is a microscale and stand-alone plug-and-play reliquefier with a small footprint, according to the company. DH Industries specifically designed it to manage boiloff gas, both on- and offshore, either by direct reliquefaction or subcooling. The company also obtained approval for the StirLNG-4 from the American Bureau of Shipping, addressing marine and offshore applications. The company expects another maritime BOG project with three StirLNG-4 units to obtain the same type of approval in October 2018, this time from Bureau Veritas.

For over 60 years DH Industries has designed and manufactured cryogenic gas liquefaction solutions. The StirLNG-4 cryogenerators on the Clean Jacksonville operate in parallel and have a total reliquefaction capacity of six metric tons per day. Each cryogenerator has single operation functionality, a solution that provides high flexibility, efficiency and reliability.

“It is the first LNG bunker barge built in North America,” said Johnny Conrad, president and CEO of Conrad Industries. “While it has been a challenge and true learning experience, the Clean Jacksonville is a triumph for the US maritime industry. I am proud of Conrad’s investment and foresight in shepherding the advancement of LNG as a marine fuel. We welcome the opportunity to work with customers as they explore and pursue the use of LNG in their vessels.” http://www.dh-industries.com