Subsea Pipeline Integrity and Risk Management by Yong Bai

By Yong Bai

Subsea maintenance and inspection are high priced for petroleum and pipeline engineers and correct education is required to target making sure approach power and integrity. Subsea Pipeline Integrity and probability Management is the ideal better half for brand spanking new engineers who must be conscious of the cutting-edge options. This guide deals a "hands-on" problem-solving method of integrity administration, leak detection, and reliability purposes corresponding to chance research.

Wide-ranging and easy-to-use, the booklet is jam-packed with info tables, illustrations, and calculations, with a spotlight on pipeline corrosion, versatile pipes, and subsea fix. Reliability-based types additionally supply a call making instrument for day by day use. Subsea Pipeline Integrity and probability Management supplies the engineer the facility and data to guard offshore pipeline investments appropriately and successfully.

  • Includes fabric choice for linepipe, in particular choice of common carbon metal linepipe
  • Covers evaluation of varied kinds of corrosion methods and definition of anti-corrosion layout opposed to inner in addition to exterior corrosion
  • Gives approach and stream coverage for pipeline platforms together with pipeline integrity management

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Example text

The cross section here means a rectangular one, with height of t or t – d and length along the pipe longitudinal direction of (1) unit. The external loads acting on the cross section are the moment and compression and the weakest cross-sectional point describes the internal resistance. , w1) and axial compression acting on the pipe wall. The amount of amplification is minimally affected by a local corrosion defect unless the defect is very wide or deep. The internal resistance is reduced significantly though by the corrosion defect and therefore the reduced wall thickness t – d is used for terms describing the internal resistance.

The bursting criterion for dented pipe may be summarized as follows: • The bursting strength of a dented pipe is close to that for a new pipe if there is no crack in the dented area. • A crack in the dented area may reduce bursting strength due to stress concentration at the crack tip. 54 Yong Bai and Qiang Bai • Bursting of a dented pipe with a crack is actually a fracture failure mode. • A dented pipe with cracks must be assessed. Fracture Criterion for Dented Pipes with Cracks The fracture criterion is an ultimate limit state normally in the form of a maximum allowable tensile strain.

A detected out of roundness significantly higher than what is assumed in the design influences the predicted collapse pressure and the bending moment capacity for external pressure load conditions. Bursting Criterion for Dented Pipes The bursting criterion is an ultimate limit state, which for design normally is given in form of a maximum allowable internal overpressure. The bursting limit state is often used in wall thickness design for pipes where internal pressure is the dominating load. The detection of cracks, corrosion as well as their size, number, and orientation have high influence on the capacity.

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