How do I determine the worst-case scenario for a salt dome storage release?
A2: Assumptions for the release rate from the salt dome should be treated in a manner similar to that for underground storage tanks. Reservoirs or vessels sufficiently buried underground are passively mitigated or prevented from failing catastrophically. You should evaluate the failure of piping connected to underground storage for the worst-case and alternative scenarios. Any above ground equipment that carries the regulated substance and is connected to the storage cavern must be considered up to the facility’s boundary since neither DOT nor DNR Pipeline Safety Section have jurisdiction over a pipeline once it passes into a facility’s boundary.
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