Impressed Current CP

Cathodic protection method using external power sources to drive current and protect structures like pipelines from corrosion.

External Corrosion

Jun 3, 2026

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9 min read

The Honest Holiday

Article 0067 Your potential tells a story. An external corrosion coupon tells the truth.

Michael Roberts, +1

External Coupons

May 29, 2026

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10 min read

Mixed Metal Potentials

Article 0065 When the voltmeter reads protection but the steel is still corroding — and how the composite reading hides what's actually happening at the pipe.

Michael Roberts, +1

External Corrosion

Over-Protection: When More Cathodic Protection Becomes the Problem

May 10, 2026

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6 min read

Over-Protection: When More Cathodic Protection Becomes the Problem

Article 0062 When CP is Pushed Past its Upper Limit

Michael Roberts, +1

CP Rectifiers

CP Rectifier Troubleshooting: Follow the Electricity

Apr 28, 2026

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8 min read

CP Rectifier Troubleshooting: Follow the Electricity

Article 0059 A systematic approach to diagnosing rectifier problems from the incoming AC to the output terminals

Michael Roberts, +1

Pipeline Integrity

Sizing a Rectifier for Impressed Current Cathodic Protection

Apr 26, 2026

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7 min read

Sizing a Rectifier for Impressed Current Cathodic Protection

Article 0058 Design calculations get you close. Field testing gets you there.

Michael Roberts, +1

Pipeline Integrity

Current Response Testing: Measuring What Your Pipeline Actually Needs

Apr 16, 2026

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16 min read

Current Response Testing: Measuring What Your Pipeline Actually Needs

Article 0055 Test Procedure, Worked Calculations, Anode Bed Design, and Why the Numbers Tell You More Than You Think

Michael Roberts, +1

Pipeline Excavation

Locating and Repairing Cable Breaks in CP Systems

Apr 12, 2026

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16 min read

Locating and Repairing Cable Breaks in CP Systems

Article 0054 When the Amps Drop to Zero

Michael Roberts, +1

Pipeline Integrity

Drainage Bond Sizing: The Calculation Behind the Mitigation

Apr 9, 2026

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16 min read

Drainage Bond Sizing: The Calculation Behind the Mitigation

Article 0053 Drainage Bond Sizing: The Calculation Behind the Mitigation

Michael Roberts, +1

Pipeline Integrity

Apr 5, 2026

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15 min read

Current Span Test Stations

Article 0052 The Pipe as Its Own Shunt

Michael Roberts, +1

Pipeline Integrity

Mar 29, 2026

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13 min read

E Log I Testing for Well Casings

Article 0049 How a Polarization Curve Solves a Problem Nobody Can Dig Up

Michael Roberts, +1

Pipeline Integrity

Mar 27, 2026

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13 min read

Current Density

Article 0048 The Number Behind the Protection

Michael Roberts, +1

Cathodic Protection

Setting A Current Interrupter - Fun Stuff

Mar 11, 2026

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5 min read

Setting A Current Interrupter - Fun Stuff

Article LJM 003 Interrupting a CP Rectifier

Levi McCullough

Pipeline Corrosion

Dec 16, 2025

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12 min read

Deep Anode Wells

Article 0013 An Introduction to Deep Groundbeds and Cathodic Protection

Michael Roberts, +1

Deep Anode

Impressed Current Cathodic Protection ICCP

Nov 11, 2025

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10 min read

Impressed Current Cathodic Protection ICCP

Article 0003 Introduction to Impressed Current Cathodic Protection

Michael Roberts, +1

External Corrosion

Nov 9, 2025

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11 min read

How Cathodic Protection Works

Article 0001 Principles and Mechanism of Cathodic Protection

Michael Roberts, +1

Impressed Current CP

The Honest Holiday

Mixed Metal Potentials

Over-Protection: When More Cathodic Protection Becomes the Problem

CP Rectifier Troubleshooting: Follow the Electricity

Sizing a Rectifier for Impressed Current Cathodic Protection

Current Response Testing: Measuring What Your Pipeline Actually Needs

Locating and Repairing Cable Breaks in CP Systems

Drainage Bond Sizing: The Calculation Behind the Mitigation

Current Span Test Stations

E Log I Testing for Well Casings

Current Density

Setting A Current Interrupter - Fun Stuff

Deep Anode Wells

Impressed Current Cathodic Protection ICCP

How Cathodic Protection Works

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