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Hazardous Waste Tank System <br /> Written Assessment per CCR Titie 22 NOV <br /> Applied Aerospace Structures Inc. 34375 South Airport Way, Stockton,CA 95205 2022 <br /> Ultrasonic Thickness Gauge Measurements <br /> UTG Thickness <br /> Chrome Treatment Tank <br /> Data Point Thickness Units <br /> 1 0.436 IN <br /> 2 0.467 I N <br /> 3 0.446 IN <br /> 4 0.461 IN <br /> 5 0.477 1N <br /> 6 0.455 IN <br /> 7 0.467 IN <br /> 8 0.442 1 N <br /> 9 0.470 IN <br /> 10 0.447 1 N <br /> average 0.457 IN <br /> std. dev. 1 0.014 IN <br /> Hydrostatic Strength Calculation <br /> FHydrostatic Calculation - Chrome Treatment Tank <br /> Cylindrical, Cone <br /> Material of Construction HDPE <br /> Yield Strength, psi 3000.00 <br /> Shear Strength, psi 1710.00 <br /> Weld Efficiency 1.00 <br /> Effective Yield Strength, psi 1710.00 <br /> Depth of Liquid, in 61.00 <br /> S.G Contents 1.00 <br /> Pressure at bottom plate, Ib/ft2 317.20 <br /> Bottom Plate Diameter, in 6.00 <br /> L2-gth <br /> ottom late, in2 28.26 <br /> ottom late, ft2 0.20 <br /> bottom late Ibs 62.25 <br /> nk bottom wall under shear, in2 8.48 <br /> ess at tank wall bottom corner, psi 7.34 <br /> Yield Stren th > A lied Shear Stress <br /> SAfet 232.89 <br /> • The tank has sufficient strength for its current use <br />