IIR document

Feasibility study of receiving ultra-cold nitrogen rich LNG at Fos Cavaou terminal.

Number: 81

Author(s) : KOZLIK V., GHAZOUANI I., DEVEAU C.

Summary

The diversification of LNG supply introduces operational and safety challenges for regasification terminals. This study evaluates the feasibility of receiving ultra-cold LNG at Fos Cavaou terminal in France, characterized by temperatures as low as −165 °C and nitrogen content up to 1.5 mol%. Using advanced simulation tools, the analysis examines thermal compatibility of cryogenic equipment, boil-off gas (BOG) generation dynamics, stratification and rollover risks, pump cavitation, regasification throughput, and BOG condensation in tank annular spaces. Operational constraints were identified, related to BOG compressor capacity, nitrogen-induced stratification, and pump cavitation. Recommended mitigation strategies include pressure optimization, controlled unloading rates, maintaining adequate LNG levels, and emission capacity scheduling. BOG condensation in the tank’s annular space remains an unresolved issue requiring further investigation; nitrogen injection in the annular space is identified as a potential mitigation strategy.

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Details

  • Original title: Feasibility study of receiving ultra-cold nitrogen rich LNG at Fos Cavaou terminal.
  • Record ID : 30034694
  • Languages: English
  • Subject: Technology
  • Source: 21st International Conference & Exhibition on Liquefied Natural Gas (LNG2026)
  • Publication date: 2026/02/05

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