HOUSTON, November 15, 2022 /PRNewswire/ — Freeport LNG Development, LP (Freeport LNG) today provides the results of an independent third-party Root Cause Failure Analysis (RCFA) report on the June 8, 2022 incident at its liquefaction plant. The RCFA report was commissioned by Freeport LNG and conducted independently by a highly qualified incident investigation firm, IFO Group, to identify the underlying causes of the June 8e incident. Over nearly five months, IFO Group investigated the incident, collected and analyzed physical specimens from the incident, interviewed witnesses, reviewed process and design data, and ultimately compiled the RCFA report, identifying the specific causes that led to or contributed to the incident. June 8e incident.

The safety and security of our workforce and the surrounding community, as well as environmental stewardship are Freeport LNG’s top priorities. Freeport LNG believes that transparency around the causes of this incident, and the corrective actions it is taking to ensure that an incident of this nature does not happen again, are essential to maintaining public trust.

With this in mind, the results of the root cause failure analysis prepared by IFO Group are as follows:

direct cause

  • Isolation of a segment of piping containing cryogenic liquefied natural gas (LNG) without adequate overpressure protection, which the LNG then heated and expanded due to exposure to ambient conditions, resulting in boiling liquid, explosion of expanding steam or BLEVE, and rupture of segment piping.

Root causes

  • Pressure Relief Valve (PSV) Test Procedure and Car Seal Program Gaps;
  • Failure to reassign temperature gauge alarms used for cooling operations during commissioning on LNG piping that could warn operators of rising temperatures in LNG piping during operations; and
  • Operating procedures that allowed the operator to close valves that could allow LNG to be isolated in a segment of piping.

Contributing causes

  • Failure of 2016 Hazards and Operability Study to assess potential for blocked LNG piping segment with inadequate overpressure protection;
  • Failure to use the change management process to revise tank management operating procedures;
  • Failure to accurately and in a timely manner diagnose sudden pipe movement as being due to pipe stress resulting from overpressure of an adjacent pipe segment; and
  • Operator fatigue due to high overtime requirements.

IFO Group has offered recommendations to address each of the root and contributing causes above, and Freeport LNG is implementing each of those recommendations. Specifically, Freeport LNG made significant improvements to its PSV testing processes and car seal program, implemented procedural changes to avoid operating scenarios that could allow LNG to become stuck in segments piping, and revised its control system logic to alert control room operators of valve positions. or temperature readings that indicate possible LNG isolation in all pipe segments. Freeport LNG is also updating its training program to address the causes of the incident, as well as the identification and diagnosis of abnormal operating conditions in the facility.

To complement the IFO report, Freeport LNG also engaged another independent consultant to conduct a comprehensive review of its LNG storage and transfer operating procedures, control systems maintenance and inspection procedures, as well as the qualifications and training programs of its personnel. As a result of this months-long independent review, Freeport LNG is implementing various recommended improvements in these areas. Additionally, Freeport LNG has undertaken a major hiring effort to increase the LNG plant workforce by more than 30% to reduce overtime, as well as create new functional departments within organization that focus on improving training, operational excellence, quality assurance and improving business performance. Freeport LNG also runs an extensive company-wide process safety management initiative to apply and reinforce process safety concepts in day-to-day work processes across the organization.

Freeport LNG is committed to exiting the June 8e incident with an unparalleled focus on safety, operational integrity and operational excellence.


Freeport LNG is an LNG export company headquartered in Houston, TX. The company’s three-train liquefaction facility, with a capacity of 15 MTPA, is the seventh largest in the world and the second largest in the United States. how nice. The plant’s electric drive motors reduce carbon emissions by more than 90% compared to gas turbine liquefaction plants. Freeport plans to expand by adding a fourth liquefaction train, which has received all regulatory approvals for construction. Freeport was created in 2002 to develop, own and operate an LNG terminal on Quintana Islandnear Freeport, TX. The terminal started its LNG import operations in June 2008 and started LNG export operations in 2019. More information can be found at from Freeport website at

Heather Browne


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