Alaska agency permits LNG project, with gas-fired turbines

The Alaska Department of Environmental Conservation (ADEC) has made a preliminary decision to approve Alaska Industrial Development and Export Authority’s (AIDEA) application for an air permit on the North Slope Liquefied Natural Gas Facility.

The department is taking comment on that planned approval until Oct. 6.

The North Slope LNG Facility is located about 4 miles north-northwest of Deadhorse, Alaska. The facility will pre-treat a portion of the field fuel gas available on the North Slope to remove H2S, carbon dioxide (CO2), and moisture; and then liquefy the gas to be loaded on tanker trailers and trucked 500 miles to Fairbanks, Alaska, where it can be used for various purposes, including power generation. The facility will process approximately 12 billion standard cubic feet per year (BCF/yr) of natural gas.

AIDEA will use the pre-treated fuel gas for the four gas turbines and other natural gas-fired units located at the facility.

AIDEA submitted a prevention of significant deterioration (PSD) permit application for this project on January 31, 2014 and a revised PSD permit application on May 19, 2014. The project was originally anticipated to trigger PSD review due to potential greenhouse gas (GHG) emissions. However, a U.S. Supreme Court decision on June 23, 2014, determined that GHG emissions alone cannot trigger PSD review. As a result of this ruling the project is no longer subject to PSD permitting as none of the potential emissions exceed PSD permit thresholds.

AIDEA is requesting authorization to install and operate four combustion turbines, a thermal oxidizer, an emergency reciprocating internal combustion engine (RICE), a hot oil heater, a small water heater, and a flare at the facility. Each combustion turbine would be 67.11 MMBtu/hr in size.

AIDEA is a state-backed agency created to promote industrial development projects.

About Barry Cassell 20414 Articles
Barry Cassell is Chief Analyst for GenerationHub covering coal and emission controls issues, projects and policy. He has covered the coal and power generation industry for more than 24 years, beginning in November 2011 at GenerationHub and prior to that as editor of SNL Energy’s Coal Report. He was formerly with Coal Outlook for 15 years as the publication’s editor and contributing writer, and prior to that he was editor of Coal & Synfuels Technology and associate editor of The Energy Report. He has a bachelor’s degree from Central Michigan University.