DCVG

Direct Current Voltage Gradient technique for pinpointing holidays and corrosion in pipeline coatings.

Cathodic Protection

Aug 4, 2026

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10 min read

Remote Earth Is Not a Distance

Article 0074 — It is a condition, not a number of feet. You find it with a voltmeter, it moves with the current crossing the pipe, and the place it hides is the one place you most need it.

Michael Roberts, +1

Coating Inspection

ACVG vs DCVG: Picking the Right Coating Survey for the Job

May 22, 2026

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10 min read

ACVG vs DCVG: Picking the Right Coating Survey for the Job

Article 0064 How each method works, where each tends to do well, where each tends to struggle, and what to weigh when you're deciding between them.

Michael Roberts, +1

External Corrosion

Understanding Shielding and Its Impact on CP

Mar 1, 2026

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8 min read

Understanding Shielding and Its Impact on CP

Article 0037 Shielding and Its Impact on Cathodically Protected Metallic Structures

Michael Roberts, +1

Coating Inspection

Nov 28, 2025

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12 min read

How DCVG Works

Article 0007 Detecting Pipeline Coating Defects with Direct Current Voltage Gradient Surveys

Michael Roberts, +1

Coating Inspection

Nov 23, 2025

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11 min read

ACVG vs DCVG Choosing the Best Survey

Article 0005 Informed Decision Making for ACVG or DCVG

Michael Roberts, +1

DCVG

Remote Earth Is Not a Distance

ACVG vs DCVG: Picking the Right Coating Survey for the Job

Understanding Shielding and Its Impact on CP

How DCVG Works

ACVG vs DCVG Choosing the Best Survey

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