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 – Twenty-four 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-five 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 current 473-page PDAM Manual are:
- Introduction;
- Scope;
- Background;
- Types of Defect Considered;
- The Methodology for Conducting an Assessment;
- The Format of the Pipeline Defect Assessment Manual;
- The Definition of Acceptance;
- The Design Factor;
- Design and Operating Pressure and Over-Pressure;
- The Use of Specified Minimum Material Properties;
- The Use of the Specified Minimum Wall Thickness;
- A Corrosion Allowance;
- Measurement Uncertainty and Inspection Tolerances;
- Safe Working Practices in the Vicinity of a Damaged Pipeline;
- Guidance on the Measurement of Damage;
- Repair Methods;
- Assessment Methods Recommended in the Pipeline Defect Assessment Manual;
- References;
- Defect Free-Pipe;
- Corrosion;
- Gouges;
- Plain Dents;
- Kinked Dents;
- Smooth Dents on Welds;
- Smooth Dents and Gouges;
- Smooth Dents Containing Other Types of Defect;
- ‘Spring Back’ and ‘Rerounding’ of Dents;
- Manufacturing Defects in the Pipe Body;
- Girth Weld Defects;
- Seam Weld Defects;
- Cracks and Cracl-Like Defects;
- Environmental Cracking;
- Fatigue;
- Defects in Pipeline Fittings;
- Interaction Between Defects;
- Leak and Rupture;
- Fracture Propagation.
Background and Literature Reviews
All reports written by Penspen, unless otherwise stated:
- Assessment Methods for Defect Free Pipe;
- Assessment Methods for Corrosion in Pipelines;
- Assessment Methods for Gouges in Pipelines;
- Assessment Methods for Dents in Pipelines;
- Spring Back and Rerounding in Dented Pipelines;
- Assessment Methods for Dents and Gouges in Pipelines;
- Assessment Methods for Dents and Other Defects in Pipelines;
- Time Dependent Behaviour of Defects in Pipelines;
- Assessment Methods for Cracking in Pipelines;
- Assessment Methods for Manufacturing Defects in Pipelines;
- Assessment Methods for Defects in Pipeline Girth Welds and Seam Welds (by DNV);
- Assessment Methods for Environmental Cracking in Pipelines;
- Methods governing and preventing long running ductile and brittle propagating fast fracture in gas transmission pipelines (by CSM);
- Assessment Methods for Defects in Pipeline Fittings;
- The Leak-Rupture Behaviour of Defects in Pipelines;
- Interaction Between Defects in Pipelines;
- Corrosion;
- Cracking;
- Environmental Cracking;
- Fatigue;
- Fracture Propagation;
- Mechanical Damage;
- Subsea;
- Weld Effects.
Defect Calculation Excel Spreadsheets
- Corrosion internal pressure (burst) (using DNV-RP-F101 Part B);
- Corrosion internal pressure (burst interaction) (using DNV-RP-F101 Part B);
- Corrosion internal pressure (burst) (river-bottom) using DNV-RP-F101 Part B);
- Corrosion internal pressure and compressive external (burst) (using DNV-RP-F101 Part B);
- Corrosion internal pressure (burst) (using DNV-RP-F101 Part A);
- Corrosion internal pressure (burst) (using ‘modified’ ASME B31G);
- Corrosion internal pressure (burst) (using ASME B31G);
- Corrosion internal pressure (burst) (using a ‘remaining strength’ criterion);
- Corrosion circumferential bending;
- Corrosion circumferential internal pressure axial load;
- Corrosion circumferential internal pressure axial load bending;
- Gouge longitudinal internal pressure (burst);
- Gouge circumferential bending;
- Gouge circumferential internal pressure axial load;
- Gouge circumferential internal pressure axial load bending;
- Gouge helical internal pressure axial load bending;
- Plain dent internal pressure (burst);
- Plain dent internal pressure (fatigue);
- Smooth dent and gouge internal pressure (burst);
- Smooth dent and gouge internal pressure (fatigue);
- Smooth dent on weld internal pressure (fatigue);
- Girth weld defect (using the EPRG guidelines);
- Leak-rupture longitudinal internal pressure (toughness dependent);
- Leak-rupture longitudinal internal pressure (flow stress dependent);
- Leak-rupture circumferential bending;
- Leak-rupture circumferential internal pressure axial load;
- Leak-rupture circumferential internal pressure axial load bending;
- Fracture propagation (using the EPRG guidelines);
- Fracture propagation (using DNV-OS-F101);
- Prevention of ductile fracture.
Test Data Spreadsheets
- Burst Tests on Defect Free Pipe;
- External Pressure and Other Loads Tests;
- Buckle Propagation Tests;
- Burst Tests on Corrosion;
- Tests on Circumferential Corrosion;
- Tests on Corrosion (internal pressure and other loads);
- Burst Tests on Gouges (Part-Wall Defects);
- Fatigue Tests on Gouges (Part-Wall Defects);
- Tests on Longitudinal Part-Wall Defects;
- Tests on Circumferential Part-Wall Defects;
- Tests on Helical Through-Wall Part-Wall Defects;
- Burst Tests on Through-Wall Defects;
- Tests on Circumferential Through-Wall Defects;
- Burst Tests on Dents;
- Burst Tests on Dents on Welds;
- Fatigue Tests on Dents;
- Fatigue Tests on Dents on Welds;
- Spring Back and Rounding of Dents;
- Burst Test on Dents and Gouges;
- Burst Test on Dents and Other Defects;
- Fatigue Test on Dents and Gouges;
- Test on Defect Free Bends;
- Test on Defects in Bends;
- Tests on Interaction;
- Tests on Defects at Constant Pressure;
- Leak and Rupture;
- Full Scale Burst Test Pipes Data Bank;
- Full Scale Burst Test on Longitudinal Welded Pipes Data Bank;
- Full Scale Burst Test on Spiral Welded Pipes;
- Dent Gouge Burst;
- Dent Gouge Fatigue;
- Longitudinal Gouge Burst;
- Plain Dent Burst;
- Plain Dent Fatigue (Damage);
- Smooth Dent on Weld Fatigue.