Abstract
There are several drainage mechanisms that are employed at petroleum and related facilities, such as runoff or grading and spill containment. The topography, climatic conditions, and arrangements for effluent treatment influence the design of drainage systems for the control of oil spills, resulting from the failure of equipment, overflows, or operating errors. Additionally the amount, spacing, and arrangement of hydrocarbon process equipment also influence the features of a drainage system. Adequate drainage system should be provided for all locations where a large amount of hydrocarbon liquids can be released and may accumulate within the terms of the risk analysis frequency levels. Drainage slopes within tank areas should ensure that any spills are drained away from tanks, manifolds, or piping. Small fires that can occur in gutters or drains around tanks weaken connections to the storage tank and release the contents of the tank. Any gutter encircling the tank should be located at a safe distance from the tank and drain basins should not be located under tank mixers, major valves, or entrances to the tank.
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