What is in PDAM?

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