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Sacdes <br />r <br />UTED GALVANIC ANODE SPREADSHEET (Magnesium) <br />signation <br />98 <br />Client: E.F. Kludt & Sons <br />Project: Underground Storage Tank, CP <br />2000 gallon steel tanks <br />Tank Iength(feet) <br />Tank diameter (inches) <br />Computed surface area (sq. ft) <br />Other surface area, (sq. ft) <br />Total surface area, for 2 tanks <br />Coating efficiency (0 for bare, else xx% ) <br />Bare steel current requirement (malsq.ft) <br />Total current Demand (ma) <br />Anode weight (lbs) <br />Anticipated number of anodes <br />Number of anode beds desired <br />Number of anodes per bed <br />Spacing of anodes desired (feet) <br />Anode length (inches) <br />Anode diameter (inches) <br />Electrolyte resistivity (ohm -cm), estimated <br />Anode -to -earth resistance (ohm) <br />Estimated structure -to -earth resistance (ohm) <br />Total Circuit Resistance (ohm) <br />Driving potential to protected steel(at 0.85 V) <br />Actual total current output (ma) <br />Required current output (ma) <br />Consumption rate at 50% efficiency (lbs / amp -yr) <br />Total anode weight (lbs) <br />Target design life (years) <br />Calculated design life(based on required current output) <br />12.0 <br />ft <br />64 <br />in <br />737 <br />sq ft <br />0 <br />sq ft <br />1,474 <br />sq ft <br />30 <br />% <br />1 <br />ma/sgft <br />1,032 <br />ma <br />20 <br />lbs <br />9 <br />anodes <br />9 <br />bed(s) <br />1 <br />anodes <br />10 <br />ft <br />64 <br />in <br />h In <br />ohm -cm <br />ohm <br />ohm <br />ohm <br />volt <br />ma <br />ma <br />lbs/ amp -yr <br />lbs <br />years <br />3,000 <br />7.07 <br />0.10 <br />7.17 <br />4R(1 /0,y9 <br />0.90 <br />1-129 <br />a. CR 075 <br />1032 <br />17.00 <br />RROS <br />180 <br />20 <br />85% <br />Greater than 20 years <br />h In <br />ohm -cm <br />ohm <br />ohm <br />ohm <br />volt <br />ma <br />ma <br />lbs/ amp -yr <br />lbs <br />years <br />