In double-walled LNG storage tanks the dynamic load on the wall of the outer tank in case of a sudden failure (zip-failure) of the inner tank be significantly higher than the hydrostatic pressure. This was shown experimentally by Cuperus on a scale model. By using a simplified analytical model it is shown in this paper insulation and gas containment in the annular space between the two tanks dampens this dynamic load. The dynamic to static load ratio in case of any empty insulation space can be reduced by a factor of two to three when the damping effects of the insulation is considered. The influence of insulation space dimensions, perlite stiffness, and the effect of fiberglass is shown in this paper.
Double-wall cryogenic storage tanks - effect of perlite/fiberglass insulation on dynamic loads in case of inner tank failure
Doppelwandige kaeltetechnische Speichertanks - Einfluss der Perlit/Glasfaserisolierung auf die dynamischen Lasten im Fall von inneren Tankbeschaedigungen
Cryogenic Processes and Equipment 1982. AIChE Symp. Series ; 79 , 224 ; 46-50
1983
5 Seiten, 5 Bilder, 2 Tabellen, 4 Quellen
Aufsatz (Konferenz)
Englisch
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