· The helium plant is at temperature and operational
· Taking ownership of the helium facility, with the successful production of liquid helium (“LHe”) at the VGP
· LNG production stable when compared to previous quarters in the prior 12 months
· Two new, high helium exploration wells completed and converted to production-ready status
· Geological data obtained confirmed the presence of an unmodelled gas-bearing fault which will be
targeted for future drilling
LNG production
LNG production for the reporting period totalled 1,249 tons, with operations beginning to trend back into a stable, reliable production trend. Production in this quarter was impacted by several system shutdowns related to the final commissioning of the helium system and minor efficiency losses, which were rectified during annual maintenance, completed in September 2024.
Helium system integration completed
The Company announced on 9 August 2024 that the liquid helium production train is fully operational, and we have produced helium since 19 July 2024. The optimisation efforts during the commissioning phase have also yielded impressive results, evidenced by a significant reduction in timelines for the plant start-up and cooldown processes evidenced in the graph below.
Helium Cooldown Chronology
• The 1st and 2nd cooldowns in 2022 and 2023 were impacted by a leak in the helium cold box (subsequently repaired in September and tested in October/November 2023
• The 3rd cooldown in the February 2024 attempt took longer due to a more conservative cool-down approach to ensure no adverse impacts post the leak repair
• The 4th cooldown in May 2024 was taken to test further refinement of the cool-down methodology and operating philosophy
• During the 4th cooldown the OEM proposed a value engineering enhancement to improve performance and stability by introducing a buffer storage tank between the Nitrogen and Helium cold boxes which would improve the longer-term operational efficiency of the helium system which was completed before the 5th cooldown
• The 5th cooldown posts the completion and installation of the value engineering solution reduced the time frame to 9 days. Thereby demonstrating not only the benefit of refining cooldown methodology in all the previous attempts but also the improved control and performance of the proposed value engineering enhancement
With helium production now achieved and Tetra4 in complete operational control of the process plant since starting the project in 2019, the team will focus on achieving stability across both LNG/LHe operations.