220.127.116.11 Bulk Oil Storage Tanks. Spills may originate from tank rupture, overflow, or
valve and pipe leakage. In addition, the process of filling the tanks from a barge, a
railroad tank car, or a truck may cause an oil spill.
18.104.22.168 Lube Oil Tanks. Lubricating oil tanks are normally located indoors. Spills
may originate from tank rupture, valve and pipe leakage, or lube oil drippings from
equipment which, if unconfined, may be sources of oil spills.
22.214.171.124 Oil-Filled Transformers. Most large electrical transformers are filled with
oil for purposes of cooling. Their location can be indoors or outdoors and ground level
or elevated. For example, transformers for electrostatic precipitators are typically
located atop the precipitator structure itself. Spills may originate as a result of
rupture or seal leakage.
Methods of Prevention. According to oil spill regulations and permitting,
appropriate containment and diversionary structures or equipment to prevent discharged
oil from reaching a navigable watercourse should be provided. The following systems or
its equivalent should be used as a minimum.
Dikes, berms, or retaining walls.
Gravel-filled retention area under transformers.
For example, the area surrounding fuel oil storage tanks shall be provided
with dikes with controlled water discharge to confine oil spills and to collect
rainwater runoff that may be contaminated with oil. Oil/water separators may be
required on the water discharge control to satisfy some state requirements. See NAVFAC
DM-22, Petroleum Fuel Facilities, for additional information.
Methods of Cleanup. If a spill occurs, appropriate cleanup action must be
taken. Confined spills above ground may be cleaned up through use of oil-absorbent
materials. Permeated soils shall be removed, and uncontaminated soils shall be used as
a replacement. If the plant is located near a navigable watercourse, appropriate clean
up equipment must be on hand for spills on such a water surface.
Additional information concerning oil spill prevention and cleanup can be
found in the Code of Federal Regulations.