Vacuum Insulated Tanks for Pressurised LNG

No rollover apparent under storage and handling in zero boil-off, pressurised, VI tanks. 

Wide experience with handling ottier cryogenic liquids under pressurised, zero loss, storage, such as LIN, LOX, and LAR. 

Stable stratification with zero loss under pressure, and no roUover. 

Density reduction and liquid expansion with increasing temperature and pressure require only 85 % filling. 

There appears to be NO circumstances under which LNG under pressure from zero-loss, pressurised storage in Vacuum Insulated (VI) tanks can suffer Rollover. The only provisions are that during refilling and refuelling operations, complete mixing of fresh LNG with the tank heel should be achieved, before the refilling to only 85 % full is completed. 

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