Ancor Pipeline Integrity performs External Corrosion Direct Assessment (ECDA) in accordance with NACE SP0502, applying a structured and proactive methodology to identify and mitigate external corrosion threats to pipeline integrity. This approach combines historical data, environmental analysis, and advanced indirect and direct inspection techniques to ensure the continued safe and efficient operation of buried pipeline systems. 

Key Features:

1. Comprehensive Data Collection:

• Integration of historical records, environmental data, and coating/cathodic protection information.

• Use of advanced inspection tools, including Close Interval Surveys (CIS), Direct Current Voltage Gradient (DCVG), Pipeline Current Mapping (PCM), and soil resistivity measurements.

2. Detailed Analysis:

• Expert review and alignment of survey data to identify coating holidays, areas of potential corrosion, and cathodic protection deficiencies.

• Application of specialized software for data analysis, anomaly detection, and prioritization

3. Targeted Mitigation:

• Development of maintenance and repair plans based on quantified risk.

• Prioritization of high-risk segments for immediate intervention.

4. Regulatory Compliance:

• Full alignment with U.S. DOT regulations and integrity management requirements.

• Adherence to industry standards, including NACE SP0502, API 1160, and relevant PHMSA rules.

• Delivery of complete documentation to support audits, traceability, and ongoing compliance.

ECDA Methodology Overview:

1. Pre-Assessment:

• Review of historical data, prior inspections, environmental, and coating conditions.

• Pipeline segmentation based on risk factors such as soil characteristics, coating type, and CP performance.

2. Indirect Inspection:

• Execution of CIS, DCVG, PCM, and other surveys to locate coating defects and assess CP effectiveness.

• Data mapping and indication classification to identify likely corrosion areas.

3. Direct Examination:

• Selection of specific pipeline segments for excavation, based on the results from the indirect inspection phase.

• Detailed evaluations, including visual inspection, ultrasonic testing, and soil analysis, to validate anomalies.

4. Post-Assessment:

• Integration of all assessment phases to evaluate pipeline condition and corrosion control effectiveness.

• Recommendations for targeted repairs, coating rehabilitation, and CP system adjustments.

• Delivery of a complete technical report with findings, justifications, and a future action plan.