FieldengCathodic Protection
Pipeline Current Requirement
Required current from exposed surface area and current density.
Cathodic Protection
Required current from exposed surface area and current density.
App id: CUR-01. Reference version 1.0.
How to fill it
Fill the inputs. The tool shows the outputs.
On the tool screen, Calc is the working sheet. Presets stores values you reuse. Reference is the formula, assumptions, and provenance below.
Formula
I = A × JInputs
| Name | Unit |
|---|---|
| Area | m2 |
| Current density | mA/m2 |
Outputs
| Name | Unit |
|---|---|
| Current (hero result) | A |
Diagnose
This tool does not attach diagnose observations.
Assumptions
- Current density is an explicit input; 20 mA/m² is an example engineering value, not a hidden default.
- Area is the exposed or design surface the user intends (bare, coated with breakdown applied elsewhere, etc.).
Provenance
- General CP current-requirement relationship I = A × J.