Ancor Pipeline Integrity performs comprehensive reviews of external corrosion mechanisms affecting buried pipeline systems. This evaluation integrates field data, design and construction records, and historical performance to identify potential corrosion risks, characterize contributing factors, and support the development of targeted mitigation strategies.

By aligning survey results, cathodic protection performance, environmental data, and in-line inspection (ILI) findings, this service provides a structured foundation for understanding corrosion behavior and optimizing long-term integrity plans.

SCOPE OF SERVICE:

1. Compilation and alignment of critical data sources, including: 

• CP rectifier locations and settings

• Sacrificial anode bed positions

• Close Interval Survey (CIS) and DC Voltage Gradient (DCVG) data

• Coating type and installation history

• Soil type, resistivity, and pH

• Elevation profile

• External corrosion failure and repair history

2. Correlation of above-ground survey results with ILI data to: 

• Identify theoretical corrosion hotspots

• Estimate potential external corrosion growth rates

• Compare against CGR results from other assessments

3. Evaluation of likely external corrosion mechanisms, considering:

• Coating degradation

• CP shielding

• Environmental and geotechnical influences

4. Development of technical recommendations to improve corrosion control practices and manage risk proactively. 

BENEFITS:

1. Improves understanding of corrosion activity and contributing factors.

2. Enhances decision-making for CP adjustments, coating remediation, or excavation planning.

3. Supports risk-based integrity programs.

4. Strengthens the technical basis of corrosion control strategies to support regulatory compliance and audit readiness.