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1 <br />1 <br />1 <br />1 <br />1 <br />1 <br />1 <br />1 <br />1 <br />1 <br />1 <br />1 <br />1 <br />1 <br />1 <br />1 <br />1 <br />1 <br />0 01 <br />Chase Chevrolet Waste Oil & Waste Antifreeze Tank Assessment 2010 <br />Seismic/Anchoring findings: The tank as designed and operated, and the <br />containment area in which it is located are adequatelya red and are <br />seismical) sound. Initials: <br />Leak Test: <br />The tank has been in service for 15 years and shows no evidence of <br />leakage. <br />Hydrostatic Calculation: <br />Waste Antifreeze Tank <br />mm <br />Tank wall thickness, in <br />0.11 <br />Tank Dia. In. <br />38.00 <br />Depth of fluid in tank, ft <br />4.50 <br />S.G. of Fluid <br />1.03 <br />Pressure of fluid at bottom of tank, psi <br />2.01 <br />hoop stress at bottom of shell, psi <br />346.92 <br />Yield Stress steel unknown, psi <br />30000.00 <br />joint effeciency, butt weld unknown <br />0.70 <br />effective allowable stress, psi <br />21000.00 <br />Safety Factor <br />60.53 <br />Chase Chevrolet <br />Waste Antifreeze Tank UTG <br />Thickness Readings <br />mm <br />in <br />Point ID Thickness <br />1 <br />2.9 <br />0.114173 <br />2 <br />2.76 <br />0.108661 <br />3 <br />2.78 <br />0.109449 <br />4 <br />2.81 <br />0.11063 <br />5 <br />2.8 <br />0.110236 <br />6 <br />2.79 <br />0.109843 <br />7 <br />2.86 <br />0.112598 <br />8 <br />2.71 <br />0.106693 <br />9 <br />2.78 <br />0.109449 <br />10 <br />2.81 <br />0.11063 <br />11 <br />2.74 <br />0.107874 <br />12 <br />2.85 <br />0.112205 <br />13 <br />2.82 <br />0.111024 <br />14 <br />2.9 <br />0.114173 <br />15 <br />2.8 <br />0.110236 <br />average <br />0.110525 <br />std dev <br />0.002107 <br />4 x std dev <br />0.008427 <br />max pit depth <br />0.008427 <br />max allowable pit <br />0.060525 <br />Tank is okay for pits. <br />Integrity testing findi <br />results obtained from t <br />use. Initials: <br />Based on the above noted integrity test and the <br />3t, the tank has sufficient integrity for its intended <br />s-• • ; , ,I r <br />