Safety, reliability and risks associated with water, oil and gas pipelines : [proceedings of the NATO Advanced Research Workshop on Safety, Reliability and Risks Associated with Water, Oil and Gas Pipelines, Alexandria, Egypt, 4-8 February 2007

Pipes are of major importance for transport of liquids and gas mainly for water, natural gas and oil. The total length of gas pipes in the world is estimated at one million kilometres for gas transport (pipes with a diameter of 80 to 1000 mm). Pipelines remain the least expensive transcontinental mean of transport compared to rail-bound or terrestrial transport. It has become increasingly paramount to ensure the safe utilisation of such plant in order to prevent economical, social and ecological losses. From a technical point of view, pipelines are complicated three dimensional structures that include straight pipes, nozzles, pipe-bends, dissimilar welded joints, etc. In addition, their operating conditions can be quite severe, that is, internal pressure and cyclic loading (vibration) combined with the influence of internal and external corrosive environments. The external defects, e.g., corrosion defects, gouge, foreign object scratches, and pipeline erection activities are major failure reasons of gas pipelines. All these types of defects and associated failure are described. Leak and fracture of pipes is assumed to be done by initiation and propagation of defect and final failure when defect has reached a critical length. In this book, the three two major defect assessment tools for pipes are presented : i) the failure assessment diagram and particularly the SINTAP procedure, ii) limit analysis, iii) strain design approach Methods of defect repair are based on investigation findings. Methods such as welded sleeve, repair clamp composite sleeve, grinding, pipe replacement are described. Front Matter....Pages i-xi General Approaches of Pipeline Defect Assessment....Pages 1-22 Application of Sintap to the Failure Assessment of Gas Pipes....Pages 23-44 Interaction between Material Properties, Inspection Accuracy and Defect Acceptance Levels in Strain Based Pipeline Design....Pages 45-64 Failure of Cylindrical Shells: Numerical and Experimental Study....Pages 65-77 Leak Detection by Using the Impedance Method....Pages 79-97 Corrosion Fatigue Cracking and Failure Risk Assessment of Pipelines....Pages 99-113 Initiation of Stress Corrosion Cracking and Hydrogen-Induced Cracking in Oil and Gas Line-Pipe Steels....Pages 115-129 Failure Analysis of Polyethylene Gas Pipes....Pages 131-163 Stable and Unstable Crack Growth in Pipes....Pages 165-182 Some Insights into the Fatigue Crack Propagation in Tubes Under Internal Pressure — Proposition of Predicting Models....Pages 183-204 Hydrogen Effect on Fatigue Life of a Pipe Steel....Pages 205-217 The Experience on Safety, Reliability and Risk Assessment of Some Ukrainian, Russian and Latvian Transite Pipe Lines....Pages 219-231 Reliability Assessment of Pipelines using Phimeca Software....Pages 233-259 On a New Software Project for Welding Simulations of Pipes (Fabrication, Repairs) and for the Evaluation of Fatigue Behaviour of Pipes in Service....Pages 261-269 Welded Penstock, Produced of High-Strength Steel and Application of Fracture Mechanics Parameters to Structural Integrity Assessment....Pages 271-286 The Thermal and Mechanical Behavior of a Joint Pipe System Calculated by Finite Element Method....Pages 287-298 Degradation of the Physical and Mechanical Properties of Pipeline Material Depending on Exploitation Term....Pages 299-315 Deformation Characteristics of Carbon Steels Under High Temperatures....Pages 317-324 Fracture Mechanics Analysis of Repairing a Cracked Pressure Pipe with a Composite Sleeve....Pages 325-333 Review of Gas Transmission Pipeline Repair Methods....Pages 335-349 Springer has here produced a major debut in English-language publications. It’s the first book to describe very recent methods for pipe defect assessment such as notch fracture mechanics and critical gross strain. Pipelines remain the least expensive transcontinental mean of transport compared to the rail-bound or terrestrial transport. It has become increasingly paramount to ensure the safe utilization of such plant in order to prevent economical, social and ecological losses. This book adds much to the body of knowledge in this area. Proceedings of the NATO Advanced Research Workshop on Safety, Reliability and Risks Associated with Water, Oil and Gas Pipelines, Alexandria, Egypt, 4-8 February 2007