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0 0 <br /> $) Operating Oil-Filled Equipment <br /> a) Operating Substation <br /> The transformer bank has three aboveground transformers and <br /> regulators for 60kv to 12kv local distribution substation. <br /> These transformers are mounted on concrete pads and protected <br /> in a rock blotter. The regulators are also mounted on concrete <br /> pads . The entire area is surrounded by an 8-inch wood berm, <br /> filled with i inches of earthen materials. The largest volume <br /> of oil in this equipment is 4,491 gallons. <br /> These transformers are manufactured for outdoor use and must <br /> retain oil to operate properly. It is unlikely that leaks <br /> would develop. <br /> Possible Spill Occurrence: <br /> i) Casing rupture The greatest spill potential is from <br /> or leakage: a casing rupture or leakage. The <br /> maximum volume of oil that could <br /> reasonably be expected to spill <br /> would be 4,491 gallons. If this <br /> occurred it would be detected <br /> immediately by a power outage. <br /> The oil would be contained in the <br /> rock blotter or by the underground <br /> oil/water separator located at the <br /> south end of the yard. <br /> b) Operating Pad-Mounted Transformer <br /> There is one operating pad-mounted transformer located in the <br /> southwest corner of the yard. It is used to furnish electrical <br /> power to this facility. This transformer contains 265 gallons <br /> of oil. <br /> Possible Spill Occurrence: <br /> i) Leakage: The greatest spill potential is from <br /> leakage of the equipment which would be <br /> detected immediately by a power outage. <br /> The maximum volume of oil that could <br /> reasonably be expected to spill due to <br /> leakage is 5 to 10 gallons. <br /> 3-13 <br />