IlI, Pressure Test & Direct Assessment 2018-01-08T16:22:31+00:00

IlI, Pressure Test & Direct Assessment

ILI VERIFICATION (IN-FIELD DATA COLLECTION & EVALUATION)

  • In-ditch data collection utilizing the following equipment:
    • GPS Trimble Unit
    • UT Meter
    • Digital Pit Gauge
    • Digital Multi Meter & Half Cell for P/S
    • Pipe Calipers
    • Soil Resistivity Meter
    • pH Paper
    • Soil Sampling Kits
    • Laptop, Camera, Measuring Wheel, Tape Measure, Ruler, & Paint Sticks
  • Documentation
    • Pipeline Maintenance Reports (PMRs)

COMPLETION REPORT

  • General overview of pipeline and specs.
  • Overview table of findings and repairs completed.
  • Primary risk findings from ILI data.
  • Any problems reported during ILI.
  • Graphs of anomaly count, depths of anomalies & orientation.
  • ILI comparison to previous ILI runs if applicable.
  • Review of verification digs & repair plan (confirm RSTRENG calcs).
  • Summary of repairs and unity graphs of ILI accuracy call outs.
  • Calculating remaining strength top 10 worst anomalies.
  • Graph all repairs made which includes all HCA locations along pipeline.
  • Review of reassessment interval.
  • Include daily reports from ILI runs.
  • Microbiologically induced corrosion testing results.
  • One-Line diagram of pipeline.
  • IMP inspection integrity assessment worksheet.
  • In-Depth Comparison Analysis Using Previous ILI Data

INTERNAL CORROSION DIRECT ASSESSMENT (ICDA)

  • Pre-Assessment
    • Documentation Research
    • System Flow & Source Analysis
    • Threat Analysis (9 PHMSA Identified Threats)
    • Applicable Assessment Selection
    • Low Point Identification
    • Operations/Field Interviews
    • Site Walks
    • Pre-Assessment Report
  • Indirect Inspection
    • Depth of Cover (DOC) Surveys
    • Critical Angle Calculations
    • Dig Selection per 49 CFR 192 & NACE SP0206 Requirements
    • Indirect Survey Summary Report
      • Documents Selection Criteria & Exam Selection Decisions
  • Direct Examination
    • In-ditch data collection utilizing the following equipment:
      • GPS Trimble Unit
      • Automated UT (Sub-contract)
      • UT Meter
      • Digital Pit Gauge
      • Digital Multi Meter & Half Cell for P/S
      • Pipe Calipers
      • Soil Resistivity Meter
      • pH Paper
      • Soil Sampling Kits
      • Liquid Sampling Kits (MIC)
      • Camera & Laptop
      • Measuring Wheel, Tape Measure, Ruler, & Paint Sticks
    • Pipeline Maintenance Reports (PMRs)/Inspection Reports
    • Remaining Strength R-STRENG/B31G Wall Loss Calculations
    • UT Probe Installs
    • Internal Corrosion Growth Rate Coupon Installs
    • Daily Reports
      • Detail Activities Performed, Crew Size, & Hours Worked for All Contractors
      • Direct Assessment Summary Report
    • Showcases Data vs. Findings
  • Post Assessment
    • Root Cause Analysis
    • Remaining Life Calculations
    • Recommend Assessment Timeline
    • Project Lessons Learned Meeting
    • Document Assessment Effectiveness
    • Recommend Future Preventative & Mitigative Measures (PMMs)
    • Post Assessment Report

EXTERNAL CORROSION DIRECT ASSESSMENT (ECDA)

  • Pre-Assessment
    • Documentation Research
    • Threat Analysis (9 PHMSA Identified Threats)
    • Applicable Assessment Selection
    • Indirect Survey Tool Selection
    • Operations/Field Interviews
    • Site Walks
    • Pre-Assessment Report
  • Indirect Inspection
    • QA/QC of Survey Contractor (if not performing survey work)
    • Indirect Surveys
    • Direct Current Voltage Gradient (DCVG) Surveys
    • Close Interval Pipe to Soil (CIPS) Surveys
    • Pipeline Current Mapper (PCM) Surveys
    • Alternating Current Voltage Gradient (ACVG) Surveys
    • Soil Resistivity Surveys
    • Line Location with GPS Centerline & Depth of Cover
    • Data Alignment
    • Survey Severity Ranking
    • Dig Selection per 49 CFR 192 & NACE SP0502 Requirements
    • Indirect Survey Summary Report
      • Documents Severity Criteria & Exam Selection Decisions
  • Direct Examination
    • In-ditch data collection utilizing the following equipment:
      • GPS Trimble Unit
      • UT Meter
      • Digital Pit Gauge
      • Digital Multi Meter & Half Cell for P/S
      • Pipe Calipers
      • Soil Resistivity Meter
      • pH Paper
      • Soil Sampling Kits (MIC)
      • Camera & Laptop
      • Measuring Wheel, Tape Measure, Ruler, & Paint Sticks
        • Coating Condition Assessment by NACE CIP Certified Inspector
        • Exothermic Welding Test Station and/or Anode Installs
        • ER Probe Installs
        • External Corrosion Growth Rate Coupon Installs
        • Pipeline Maintenance Reports (PMRs)/Inspection Reports
        • Remaining Strength RSTRENG/B31G Wall Loss Calculations
        • Daily Reports
    • Detail Activities Performed, Crew Size, & Hours Worked for All Contractors
      • Direct Assessment Summary Report
    • Showcases Data vs. Findings
  • Post Assessment
    • Root Cause Analysis
    • Remaining Life Calculations
    • Recommend Assessment Timeline
    • Project Lessons Learned Meeting
    • Document Assessment Effectiveness
    • Recommend Future Preventative & Mitigative Measures (PMMs)
    • Post Assessment Report

CATHODIC PROTECTION (CP) – CORROSION PREVENTION (PMM)

  • Annual CP Readings by NACE Certified Personal
  • Bi-Monthly Rectifier Reads by NACE Certified Personal
  • Critical Bond Reads by NACE Certified Personal
  • Trouble Shooting
  • CP Design
  • CP Effectiveness Study
  • Corrosion Growth Rate Analysis
  • Corrosion Growth Rate Coupon Installs
  • ER Probe Installs
  • UT Probe Installs
  • Isolated Steel Identification
  • Casing Short Analysis
  • Insulator Short Analysis
  • DCVG Coating Surveys
  • CIPS/CIS CP Surveys
  • PCM Surveys
  • Current Span Installs
  • Anode Installs
  • Test Station Installs
  • Coupled Pipe Identification
  • CP Data Management