September 2021, Vol. 236, No. 9

Tech Notes

Rotork GP Actuators Selected for Asian LNG Terminal

Special to P&GJ  

G P-range pneumatic actuators have been installed at a South Korean liquefied natural gas (LNG) terminal. The terminal houses four LNG storage tanks, each capable of storing up to 52.8 million gallons, a 45,000-ton liquefied petroleum gas (LPG) tank and a regasification plant.  

Rotork has been providing actuators at the terminal since it was first constructed, with more than 100 electric and pneumatic actuators installed during the initial front end engineering (FEED) phase of development.   

Additional actuators have now been installed as part of the site’s phase 2-2 expansion, with further electric and pneumatic actuators due for installation later this year.  

The actuators have been installed on the terminal’s 32-inch (813-mm) main pipeline where they will perform an open/close function, which is used for the flow of both LNG and natural gas in its gaseous form.   

Since these fluids are cryogenic, absolute control over the pipeline is critical. In the event of an emergency, the flow can be cut off immediately by the fail-safe functionality of the GP pneumatic actuators.  

Fail-safe functionality can be provided in either direction due to the spring-return module inside the GP range. These are inherently safe because they can only be removed from the center-body, which incorporates a pressure relief valve once all the spring forces have been released.   

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