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Gardner Trucking, Used Oil Tank,22§CCR 66265.192,November 2019 <br /> A.1 Shell Service Life Evaluation <br /> The maximum inspection intervals are determined by the most restrictive shell course in regard to the remaining life and the corrosion <br /> rate calculations for each shell course using the following formulas: <br /> _ tact— tmin _ tprev—tact tact—tmin _ tact—tmin <br /> Lr Cr Cr DY Iut — 2Cr I„ 4C, <br /> Next <br /> Ultrasonic <br /> Corrosion Remaining Next Thickness <br /> Rate Life Inspection Inspection <br /> (in/yr)Cr (years)Lr (years)Iv (years)lut <br /> 0.0002 >30 5 5 <br /> At the time of inspection,The Used Oil Tank meets the requirements for structural integrity in accordance with 22§CCR 66265& <br /> STI-SP001. <br /> 10 <br />