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SEP.29.2006 12:16 9702233191 <br />#3579 P.006 /010 <br />Monthly Assessment Form <br />tanks, pipes and valves should be observed for signs of leaks. Oil leaks should be cleaned up <br />and the source of the leak identified and corrected if possible during the assessment. If the leak <br />can not be repaired at the time of the assessment, it should be reported to the maintenance <br />supervisor so that appropriate action can be taken (e.g., through a work order). <br />For fill areas (i.e., areas where the visible oil could have come from a drip or spill during loading <br />or unloading), the oil should be cleaned up and the area observed at a later date to determine if <br />the visible oil was from a leak, a drip or spill during loading or unloading. <br />Shell Distortions <br />Shell distortion includes dents, bumps or bulges that may have occurred from Impact, over- <br />pressurization or over-filling. Distortion (e.g., dents and bulges) in the shell of a tank or <br />equipment that are visible to the naked eye should be noted. Figure I depicts a dent and a <br />bulge in a tank shelf. <br />Dent <br />Bulge <br />Figure 4 - Tank with Dents and Bulges <br />Shell distortions that have already been identified and evaluated do not need to be Identified <br />unless the distortion Increases in size or depth. <br />Corrosion <br />Corrosion, usually present as rust, Is a result of oxidation or chemical reaction with the tank or <br />pipe wall. To assist Facility personnel in quantifying the corrosion, the following guidelines are <br />provided. These guidelines may not represent the most conservative interpretations of <br />corrosion. Facility personnel should also use their judgement regarding the risk of tank failure <br />due to corrosion. <br />Three categories of corrosion should be classified In the assessments: <br />• Surface rust, <br />• Pitting, and <br />Received Time Sep.29. 2008 12:15PM No.0329