Post Inspection Evaluation

Comprehensive Pipeline Damage Evaluation

Integrity evaluations relate the severity of anomalies identified during an in-line inspection or external survey, or after a damage event, to the pipeline's operating conditions, geometry and material properties.

Features & Benefits

We use a comprehensive range of assessment techniques to assess anomaly criticality and control measures, repair processes or changes to the system process envelopes to prevent degradation of long-term pipeline integrity.

  • Rigorous, regulatory compliant and quality assured assessment techniques and deliverables
  • Identification of short and long-term integrity threats
  • Avoidance of unnecessary and costly excavations and repairs
  • Optimization of long-term maintenance and repair schedules
  • Maximizing the value from your ILI data

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Component
Description
Deliverable
Immediate Integrity Evaluation An evaluation of the current pipeline condition following an in-line inspection. It involves an analysis of anomaly severity, comparison to code and industry best practices. A plan is produced identifying and prioritizing any repairs required to ensure immediate integrity and compliance with regulatory requirements. A detailed report describing the current pipeline condition, a plan identifying and prioritizing remediation requirements and a recommendation of the maximum sale operating pressure.
Future Integrity Evaluation The development of a long-term, cost optimized repair plan and maintenance strategy based on a clear understanding of the long-term integrity issues facing your pipeline. We assess metal-loss defects identified during in-line inspections to determine their impact on the future pipeline integrity. We evaluate inspection data, pipeline protection systems and corrosion mitigation measures. A detailed report identifying the likely nature and causes of the detected anomalies, evaluation of growth mechanisms, a clear picture of the future integrity issues and recommendations for the allowable MAOP with time and an optimized remediation and re-inspection plan based on economic and safety issues.
Corrosion Growth Analysis (RUNCOM) The comparison of repeat ILI data to provide actionable information upon which pipeline operators can make sound corrosion-management decisions. RUNCOM is our suite of run-comparison software that we use to analyze the repeat ILI data from our own tools and other vendors' tools. A report identifying the corrosion growth activity along an entire pipeline. It provides an early warning of active corrosion. It can be used to confirm where remedial measures have been effective and enables better-informed integrity and maintenance planning decisions.
US DOT Compliance Report The evaluation and classification of all the anomalies identified during an ILI in accordance with the US DOT regulations (49CFR192 Subpart O for gas and 49CFR195 for liquids) provided with the ILI report right at the start of the Discovery period. Regulatory compliant and quality assured documentation produced by our Integrity Engineers summarizing the key ILI findings in an easy to read and reusable Microsoft Excel format. The report provides listings and excavation sheets for all the conditions requiring discovery.
Post Inspection Crack Assessment We utilize advanced fracture mechanics techniques to relate the severity of crack-like features to the pipeline's actual operating conditions, pipe geometry and material properties. Pressure (and temperature) cycle information is analyzed to determine the cyclic loading on the pipeline and in order to assess the potential for fatigue crack growth and to establish the safe remaining fatigue life. A report identifying the severity of the reported cracks, evaluating the potential crack growth mechanisms, and addressing the future integrity issues.
Dents and Third-Party Damage Assessment We assess geometric anomalies identified during an in-line inspection using techniques such as code check, critical fitness-for-purpose assessment, and finite element analysis. A report of the criticality of identified dents and/or gouges with recommendations for monitoring, repair or replacement.
ERW Threat Evaluation An evaluation of the susceptibility of 'old' ERW linepipe to pressure-cycle induced fatigue & selective seam corrosion. The evaluation can be carried out in two stages; first a preliminary pre-ILI evaluation to determine whether ILI is required and secondly a more detailed post-ILI evaluation to provide the best strategy to mitigate the threat. A report identifying the severity of the threat from pressure-cycle induced fatigue & selective seam corrosion and recommending the best mitigation strategy.
Lamination Assessment The evaluation of the significance of the laminations reported in an USWM ILI, provided in two stages; i) categorisation according to severity and ii) fracture mechanics and fatigue assessment. A report detailing the criticality and future repair needs of all reported laminations.