Plains Midstream Canada selected Specialized Services Company (SSC) to install sleeves at three locations to accommodate a new line being added to the underground infrastructure used to load and unload LPG from tankers and railcars at the Bumstead facility, an underground LPG storage cavern located along the Interstate 10 corridor between Phoenix, AZ and Los Angeles, CA. Project owner Plains Midstream, headquartered in Houston, is involved in crude oil transportation, gathering, marketing, terminaling and storage as well as marketing and storage of liquefied petroleum gas (LPG). Situated some 2,000 feet below ground at the juncture of a major rail line and tanker truck transit point, the 133-mil-lion-gallon facility is composed of three underground salt-dome storage caverns, a 24-car rail rack and three truck racks on the surface with the capability to unload six trucks simultaneously. To expedite the loading and unloading of tankers and railcars more quickly, Plains Midstream installed an additional 6-inch diameter high-pressure gas line. The project awarded to SSC involved installing six separate 12-inch diameter steel casing sleeves with a 3/8-inch wall thickness at three separate locations. Abe Veidmark, vice president of the auger division for SSC explained the challenges faced by the trenchless installation contractor, and the decision to use an innovative new approach for completing these intricate bores.
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