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PDAM Contents

The 'PDAM' project has four products:

PDAM: The Pipeline Defect Assessment Manual is a 473 page manual containing the detailed methods needed to assess a variety of defects in pipelines.

Reviews: Sixteen pipeline defect assessment literature reviews were researched and written to provide a sound technical basis for the recommended methods in PDAM.

Calculations: Thirty spreadsheets covering the methods in PDAM were developed.

Data: Thirty spreadsheets containing the full scale test data that form the bases of many of the recommended methods in PDAM, were produced.

PDAM Manual+

The chapters of the 473-page PDAM are:

  1. Introduction
  2. Scope
  3. Background
  4. Types of Defect Considered
  5. Methodology for Conducting a Fitness-For-Purpose Assessment
  6. Format of Defect Assessment Manual
  7. The Definition of Acceptance
  8. The Design Factor
  9. Design Pressure, Operating Pressure and Over-Pressure
  10. The Use of Specified Minimum Material Properties
  11. The Use of the Specified Minimum Wall Thickness
  12. A Corrosion Allowance
  13. Measurement Uncertainty and Inspection Tolerances
  14. Safe Working Practices in the Vicinity of a Damaged Pipeline
  15. Guidance on the Measurement of Damage
  16. Repair Methods
  17. Defect Assessment Methods Recommended in the Pipeline Defect Assessment Manual
  18. References
  19. Defect Free-Pipe
  20. Corrosion
  21. Gouges
  22. Plain Dents
  23. Kinked Dents
  24. Smooth Dents on Welds
  25. Smooth Dents and Gouges
  26. Smooth Dents Containing Other Types of Defect
  27. ‘Spring Back’ and ‘Rerounding’ of Dents
  28. Manufacturing Defects in the Pipe Body
  29. Girth Weld Defects
  30. Seam Weld Defects
  31. Cracking
  32. Environmental Cracking
  33. Defects in Pipeline Fittings
  34. Interaction Between Defects of Different Types
  35. Leak and Rupture
  36. Fracture Propagation

Background and Literature Reviews+

All reports written by Penspen, unless otherwise stated:

  1. Assessment Methods for Defect Free Pipe
  2. Assessment Methods for Corrosion in Pipelines
  3. Assessment Methods for Gouges in Pipelines
  4. Assessment Methods for Dents in Pipelines
  5. Spring Back and Rerounding in Dented Pipelines
  6. Assessment Methods for Dents and Gouges in Pipelines
  7. Assessment Methods for Dents and Other Defects in Pipelines
  8. Time Dependent Behaviour of Defects in Pipelines
  9. Assessment Methods for Cracking in Pipelines
  10. Assessment Methods for Manufacturing Defects in Pipelines
  11. Assessment Methods for Defects in Pipeline Girth Welds and Seam Welds (by DNV)
  12. Assessment Methods for Environmental Cracking in Pipelines
  13. Methods governing and preventing long running ductile and brittle propagating fast fracture in gas transmission pipelines (by CSM)
  14. Assessment Methods for Defects in Pipeline Fittings
  15. The Leak-Rupture Behaviour of Defects in Pipelines
  16. Interaction Between Defects in Pipelines

Defect Calculation Excel Spreadsheets+

  1. Corrosion internal pressure (burst) (using DNV-RP-F101 Part B)
  2. Corrosion internal pressure (burst interaction) (using DNV-RP-F101 Part B)
  3. Corrosion internal pressure (burst) (river-bottom) using DNV-RP-F101 Part B)
  4. Corrosion internal pressure and compressive external (burst) (using DNV-RP-F101 Part B)
  5. Corrosion internal pressure (burst) (using DNV-RP-F101 Part A)
  6. Corrosion internal pressure (burst) (using ‘modified’ ASME B31G)
  7. Corrosion internal pressure (burst) (using ASME B31G)
  8. Corrosion internal pressure (burst) (using a ‘remaining strength’ criterion)
  9. Corrosion circumferential bending
  10. Corrosion circumferential internal pressure axial load
  11. Corrosion circumferential internal pressure axial load bending
  12. Gouge longitudinal internal pressure (burst)
  13. Gouge circumferential bending
  14. Gouge circumferential internal pressure axial load
  15. Gouge circumferential internal pressure axial load bending
  16. Gouge helical internal pressure axial load bending
  17. Plain dent internal pressure (burst)
  18. Plain dent internal pressure (fatigue)
  19. Smooth dent and gouge internal pressure (burst)
  20. Smooth dent and gouge internal pressure (fatigue)
  21. Smooth dent on weld internal pressure (fatigue)
  22. Girth weld defect (using the EPRG guidelines)
  23. Leak-rupture longitudinal internal pressure (toughness dependent)
  24. Leak-rupture longitudinal internal pressure (flow stress dependent)
  25. Leak-rupture circumferential bending
  26. Leak-rupture circumferential internal pressure axial load
  27. Leak-rupture circumferential internal pressure axial load bending
  28. Fracture propagation (using the EPRG guidelines)
  29. Fracture propagation (using DNV-OS-F101)
  30. Prevention of ductile fracture

Test Data Spreadsheets+

  1. Burst Tests on Defect Free Pipe
  2. External Pressure and Other Loads Tests
  3. Buckle Propagation Tests
  4. Burst Tests on Corrosion
  5. Tests on Circumferential Corrosion
  6. Tests on Corrosion (internal pressure and other loads)
  7. Burst Tests on Gouges (Part-Wall Defects)
  8. Fatigue Tests on Gouges (Part-Wall Defects)
  9. Tests on Longitudinal Part-Wall Defects
  10. Tests on Circumferential Part-Wall Defects
  11. Tests on Helical Through-Wall Part-Wall Defects
  12. Burst Tests on Through-Wall Defects
  13. Tests on Circumferential Through-Wall Defects
  14. Burst Tests on Dents
  15. Burst Tests on Dents on Welds
  16. Fatigue Tests on Dents
  17. Fatigue Tests on Dents on Welds
  18. Spring Back and Rounding of Dents
  19. Burst Test on Dents and Gouges
  20. Burst Test on Dents and Other Defects
  21. Fatigue Test on Dents and Gouges
  22. Test on Defect Free Bends
  23. Test on Defects in Bends
  24. Tests on Interaction
  25. Tests on Defects at Constant Pressure
  26. Burst Tests on Through-Wall Defects
  27. Leak and Rupture
  28. Full Scale Burst Test Pipes Data Bank
  29. Full Scale Burst Test on Longitudinal Welded Pipes Data Bank
  30. Full Scale Burst Test on Spiral Welded Pipes