AC MITIGATION SYSTEM INSTALLATION

AC Mitigation System Installation: Safety, Compliance, and Corrosion Prevention

End-to-End AC Mitigation System Installation: From Modeling to Field Validation

When pipelines share right-of-way (ROW) corridors with high-voltage power lines, unseen electrical forces can become serious threats. Inductive, capacitive, and resistive coupling can cause damaging AC currents to flow through buried steel, accelerating corrosion and creating safety hazards for personnel.
That’s where Corrground Consulting, a leader in Corrosion Control Engineering and AC Mitigation Systems, delivers proven solutions that protect your assets and extend the life of your infrastructure.

Why AC Mitigation Matters?

Modern pipelines are better coated and better insulated — but that also makes them more vulnerable to AC interference.
In a high-voltage AC corridor, your buried steel pipeline can act like a massive secondary winding of a transformer. The resulting inductive coupling generates AC voltages that can exceed safe thresholds, leading to:

Accelerated pipeline corrosion at coating holidays
Safety hazards from touch and step voltages
Unplanned shutdowns or leaks due to undetected wall loss

AC corrosion can strike silently — until it becomes costly. Proper AC mitigation design and installation ensure your assets stay grounded, protected, and fully compliant with industry standards.

Our Expertise: From Assessment to Installation

At Corrground Consulting, we don’t just consult — we engineer and implement real-world solutions.
With over 45 years of global field experience, our NACE Certified Corrosion Consultants deliver complete Pipeline Integrity Management and Asset Integrity Consulting services focused on measurable results.

Each AC Mitigation System Installation is backed by advanced modeling, field validation, and decades of corrosion control insight.

1. Corrosion Risk Assessment

We begin every project with a comprehensive Corrosion Risk Assessment to identify AC interference sources, soil resistivity profiles, and potential fault current pathways. Using LEF/EMF testing, voltage gradient surveys, and field measurements, we quantify induced AC levels, coupling types, and coating conditions.
Our findings determine the right mitigation strategy — tailored to your specific corridor and operating environment.

2. Advanced AC Mitigation Modeling

Our engineers use industry-leading modeling software (CDEGS, IRIS, EICE) to simulate inductive coupling, capacitive interactions, and fault current effects. This process identifies where grounding, gradient control mats, or zinc ribbon systems are required for safe pipeline AC voltage mitigation.

Modeling defines:

Safe touch and step voltage limits
Critical pipeline AC current densities
High-risk locations for pipeline AC corrosion prevention

No guesswork — just data-driven system design.

3. Custom Corrosion Control System Design

As an experienced Corrosion Solution Provider, we design fully integrated mitigation systems that manage both AC and DC interference currents.
Our designs may include:

Zinc or magnesium anode grounding systems
Gradient control mats and inductive coupling mitigation
Isolation kits for flanges and valves
Bonding, shielding, and fault current protection
CP System Performance Review and recommendations for synergy with cathodic protection (CP) systems

Each design is reviewed for constructability, safety, and long-term performance under changing load conditions.

4. Installation Oversight & Commissioning

Our role doesn’t end at design. Corrground Consulting provides pipeline construction oversight and system commissioning to ensure proper grounding depth, connection quality, and test lead installation.
We verify:

Achieved grounding resistance
Correct anode orientation and backfill
AC voltage reduction effectiveness
Compliance with NACE and IEEE standards

Whether working directly with your contractors or as an independent reviewer, we ensure your AC Mitigation System performs exactly as engineered.

5. CP Monitoring and Maintenance

Post-installation, we establish a structured CP Monitoring and Maintenance plan to verify that the AC mitigation system continues to perform under live field conditions.
Routine testing includes:

AC and DC voltage trending
Coupon current density checks
Isolation kit performance verification
Corrosion data and facility review for early warning of anomalies

We provide actionable insights — not just reports — to optimize your ongoing Pipeline Integrity Management program.

Applications We Serve

Corrground Consulting has delivered AC mitigation and corrosion control solutions for industries where reliability is non-negotiable:

Oil and Gas Pipelines – Long ROW segments parallel to transmission lines
Water and Wastewater Pipelines – Corrosion mitigation in urban power corridors
Refineries and Chemical Plants – Mitigating stray current corrosion in complex facilities
Electrical Substations & Transmission Lines – Reducing high voltage AC corridor corrosion and safety risks
Underground Infrastructure & Utilities – Managing buried pipeline corrosion and stray voltage interference

Each project is approached with Integrated Project Delivery (IPD) principles — ensuring every stakeholder, from designers to operators, shares a clear understanding of risk, design intent, and long-term maintenance goals.

Safety. Reliability. Compliance. Confidence.

Every AC Mitigation System Installation we deliver is designed with safety and performance in mind:

Compliance with NACE, IEEE, and AMPP standards
Verification of pipeline AC voltage safety (touch <15VAC, step <5VAC)
Protection against coating disbondment, arc damage, and fault current exposure
Seamless integration with existing Cathodic Protection (CP) design

Our Lean Project Delivery approach minimizes cost without compromising reliability — protecting your people, your assets, and your bottom line.

Ready to Ground Your Risk?

Let’s stop AC corrosion before it starts.

Whether you’re managing a new build, evaluating interference on an existing line, or responding to pipeline corrosion assessment results, Corrground Consulting provides practical, proven solutions that restore confidence and control.

Contact us today to discuss your AC Mitigation System Installation project.

Let our experts help you protect what’s underground — before corrosion brings it to the surface.