An aerial view of the Excelsior ship docked at Freeport LNG terminal

Freeport LNG outage to last months due to damage in fire incident

Houston-based LNG export company Freeport LNG has said that the shutdown of its Quintana Island liquefaction facility will last longer than initially expected following a fire incident earlier this month.

An aerial view of the Excelsior ship docked at Freeport LNG terminal; Courtesy of Freeport LNG

As reported last week, the incident happened on 8 June at the Freeport LNG liquefaction plant on Quintana Island, Texas, prompting the company to shut down the plant with expectations for this shutdown to last for at least three weeks.

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Detailing the incident, Freeport LNG said in an update on Tuesday that it had resulted in the release of LNG, leading to the formation and ignition of a natural gas vapour cloud, and subsequent fire at the facility. As reported previously, there were no injuries and at no time did the incident pose a threat to the surrounding community.

According to the company, the LNG vapour cloud dispersion and ignition thereof were at all times contained within the fence line of the liquefaction facility, lasting approximately 10 seconds. The fire and associated smoke visible thereafter were from the burning of materials in and around the location where the incident occurred, such as piping insulation and cabling, the company explained.

With the assistance of local area emergency response personnel, the resultant fire was extinguished approximately 40 minutes after the initial incident. While the burning of those materials resulted in carbon monoxide, nitrous oxide, particulate matter, sulfur dioxide and volatile organic compound emissions, these were of limited quantity due to the short duration of the fire and not at levels that posed any immediate risk to Freeport LNG personnel or the surrounding community.

There was no release of any other chemicals or substances from the plant during the event. Water used to suppress the subsequent fire was captured on site and will be tested and confirmed free of any harmful contaminants before being released or removed for proper disposal.

Furthermore, the company explained that the incident occurred in pipe racks that support the transfer of LNG from the facility’s LNG storage tank area to the terminal’s dock facilities located on the Intracoastal (i.e., north) side of Freeport LNG’s dock basin. None of the liquefaction trains, LNG storage tanks, dock facilities, or LNG process areas were impacted.

Investigation & causes

In coordination with local, state and federal officials, Freeport LNG’s investigation into the cause of the incident, and what steps are necessary to safely resume liquefaction operations, is underway.

Preliminary observations suggest that the incident resulted from the overpressure and rupture of a segment of an LNG transfer line, leading to the rapid flashing of LNG and the release and ignition of the natural gas vapour cloud. Additional investigation is underway to determine the underlying precipitating events that enabled the overpressure conditions in the LNG piping.

Freeport LNG expected restart

Freeport LNG said that, at this time, completion of all necessary repairs and a return to full plant operations is not expected until late 2022. Given the relatively contained area of the facility physically impacted by the incident, a resumption of partial operations is targeted to be achieved in approximately 90 days, once the safety and security of doing so can be assured, and all regulatory clearances are obtained.

“Freeport LNG is mindful of the impact this incident and our suspension of operations has on our personnel, our surrounding community, and the domestic and international gas and LNG markets. We have immense gratitude for the selfless efforts undertaken by Freeport LNG operators and emergency response personnel and local emergency responders to quickly address and contain the impacts of the event on our facilities, our personnel, and the surrounding community,” the company concluded.