HATTIESBURG GAS STORAGE COMPANY - Executive Summary |
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Hattiesburg Gas Storage Company (HGS) receives, stores, and distributes natural gas. Utilizing pipelines, compresssors, and storage caverns artifically created in the Petal Salt Dome geologic formation, HGS ensures that a steady reserve of natural gas is available for periods of high demand throughout the Eastern United States. During the storage phase, natural gas is compressed into the salt dome storage caverns to a maximum pressure of 3,250 psi, and the caverns are capable of safely storing 6.7 billion cubic feet of compressed natural gas. The largest cavern, with a capacity of 5.5 billion cubic feet, is about 4000 feet below land surface and is surrounded by a highly compacted, naturally occuring, salt formation. During the distribution phase, natural gas is allowed to flow from the cavern or caverns into the pipeline system, through the compressors which regulate the pressure of the gas as it enters the pipeline system. There are no "processes" per se at the facility, with the e xception of small glycol units which dry the gas as it is released from the caverns. The gas is contacted with Triethylene Glycol (CAS 112276) and Ethylene Glycol (CAS 107211) which absorbs the water from the gas. |