A Model for LNG Tank Rollover
Rollover has occurred in several liquefied natural gas (LNG) storage tanks. In all rollover cases described in the literature [1–3] an unusually large amount of methane vapor evolved very rapidly. In one of the most dramatic cases, the La Spezia rollover of 1971 , the consequent overpressure exceeded the nominal tank design pressure, but was relieved promptly by the opening of safety valves. Whereas the threat of rollover to the integrity of properly operated LNG storage facilities is very remote, the loss of valuable methane gas through large-scale venting during a rollover and the potential environmental impact may be undesirable.
KeywordsTransport Coefficient Lewis Number Density Equilibration Cell Interface Heat Leak
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