Estimated Weight of a Magnesium Anode

This calculation is used to calculate anode size to protect small underground piping systems such as meter stations, crossovers and short laterals.
Underground piping structures that require a limited current of 1 amp or less due to the limited driving voltage. In addition, where soil resistivities are greater than 5,000-ohm cm.

Where

Ia — Electrical current flow from the anode to the pipe (Amps)

Ep — Polarized potential difference between pipe and reference electrode (V)

Ea — Polarized potential difference between the anode and the same reference electrode(V)

ρ — Average soil resistivity (0hm/cm)

Where

Wa — Weight of magnesium anode(lbs)

La — Life of the magnesium anode(years)

Ia — Electrical current flow from the anode to the pipe(Amps)

Input Parameters

  1. Select the Estimated Weight of a Magnesium Anode application from the Cathodic Protection module list.
  2. Enter Case Name, Location, Date and any necessary notes.
  3. Fill out all required fields.
  4. Make sure the values you are inputting are in the correct units.
  5. Click the CALCULATE button.

 

  • Assumed Life of a Magnesium Anode
  • Electrical Current Flow from the Anode to the Pipe
  • Polarized Potential Difference between Pipe and Reference Electrode
  • Polarized Potential Difference between the Anode and same Reference Electrode
  • Average Soil Resistivity

 

Outputs/Reports

  1. View the results.
  2. If an input parameter needs to be edited be sure to hit the CALCULATE button after the change.
  3. To SAVE, fill out all required case details then click the SAVE button.
  4. To rename an existing file, click the SAVE As button. Provide all case info then click SAVE.
  5. To generate a REPORT, click the REPORT button.
  6. The user may export the Case/Report by clicking the Export to Excel/PowerPoint icon.
  7. To delete a case, click the DELETE icon near the top of the widget.

 

  • Estimated Weight of a Magnesium Anode

Related Links

Pipeline Cathodic Protection

Pipeline Toolbox

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