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MATERIAL STORED: USED MOTOR OIL GRADE 15 -40 <br /> SPECIFIC GRAVITY: 0.86 <br /> CHEMICAL CAPATIBLITY NON-CORROSIVE TO STEEL <br /> VISUAL INSPECTION OF INTERIOR: NO FAILURE AS OF 9/26/08 <br /> TANK PARAMETERS ON INSPECTION: IN USE W/USED OIL ENCLOSED NO LEAKAGE <br /> TANK DRAWING: SEE PLOT PLAN AND VERTICAL VIEW ATTACHED <br /> SECONDARY CONTAINMENT: 8" CONCRETE BLOCK WALL 24" HIGH (SEE MATHCAD CALS ATTACHED) <br /> CONTAINMENT IS NOT LINED OR COATED CONTAINMENT GREATER THAN 110% OF LARGEST TANK <br /> CONTAINMENT CONDITIONS: VERY GOOD, NO CRACKS OR VOIDS <br /> SEISMIC LOAD CALC. 1997 CBC: SEE ATTACHED MATHCAD CALS. ATTACHED <br /> EXCEEDS SEISMIC REQUIREMENTS <br /> TANK INTEGRITY TEST: VISUAL INSPECTION OF ALL AREAS OF THIS ABOVE GROUND STORAGE <br /> TANK- NO LEAKS FOUND OR EVIDENCE OF A PREVIOUS LEAK <br /> FIVE PSI PRESSURE TEST DONE ON 9/26/08 <br /> PRODUCT IN TANK: 2' OF USED OIL <br /> PROCEDURE: TANK VENT WAS REMOVED AND REPLACED WITH PLUG AND 0 TO 15 PSI GAUGE W/VALVE <br /> TANK ACCESS COVER WAS REMOVED AND A NEW GASKET AND BOLTS INSTALLED. TANK FILL LEVEL SYSTEM <br /> WAS REMOVED AND PLUGGED. TANK FILL LINE AND PUMP WERE DISCONNECTED AND PLUGGED. AIR WAS <br /> APPLIED THOUGH SCHROEDER VALVE. CHECKED FOR AIR LEAKS WITH SOAP SOLUTION. <br /> LEAKS: AIR LEAK IN VENT PLUG, GASKET LEAK IN ACCESS COVER, TIGHTEN BOTH, AND RE-CHECK, OK. <br /> RETURN TANK TO SERVICE: REINSTALL VENT AND FILL LEVEL MEASURING SYSTEM, INSTALL PUMP PIPING <br /> EQUIPMENT: PRESSURE GAUGE 0 TO 15 PSI IN TENTH OF A POUND GRADUATION <br /> TIME PRESSURE TEMP. DEG. F NOTES <br /> 12:30 PM 0.0 93.6 START SLOW PRESSURE BUILD <br /> 01:00 PM 5.0 94.3 AIR LEAK AT ACCESS COVER <br /> 01:25 PM 5.0 94.3 <br /> 02:05 PM 5.0 94.8 <br /> 02:15 PM 5.0 94.5 <br /> 02:30 PM 5.0 93.6 <br /> 02:45 PM 5.0 93.2 <br /> 03:00 PM 5.0 92.8 <br /> 03:15 PM 5.0 93.0 <br /> 03:30 PM 5.0 93.0 NO LEAKS NO TANK FRACTURES <br /> TEST COMPLETE <br /> PRESSURE ON BOTTOM OF TANK WITH 2' OF PRODUCT AND 5.0 PSI AIR PRESSURE 5.75 PSI <br /> r. - <br />