External Hazard Effects on Steel & Concrete RLG Tanks


The storage tank system and tank material selection are based on both safety and economic considerations to provide a safe storage solution for both the owner and public while being economically feasible.

External hazards play a significant role in the selection of the tank containment system and materials of construction. The various external hazards which can affect a tank system and may require consideration in the facility risk assessment are listed in the industry standards covering refrigerated liquefied gas (RLG) storage tank systems.

However, the major external hazards such as external fire, external explosion and projectile impact should always be included in the facility risk assessment performed by the facility owner. The risk assessment determines credibility of these hazards and magnitude of external loads and effects these hazards apply to tank systems. While the storage system’s outer tank is often constructed of pre-stressed concrete to mitigate these external hazards, in some cases an outer steel tank may be adequate.

This article examines the resistance of steel and concrete tanks subjected to these three external hazards. In addition, other factors besides just the outer component materials may impact the tank storage concept selection.

Click here to read the full article in Tank Storage Magazine.

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