Defects Assessment in Subsea Pipelines by Risk Criteria
| Autor: | Victor Leschenko, Anatoly Lepikhin, N. A. Makhutov |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
021110 strategic
defence & security studies Computer science InformationSystems_INFORMATIONSTORAGEANDRETRIEVAL 0211 other engineering and technologies 02 engineering and technology Hazard analysis 01 natural sciences Hazard Pipeline (software) 010305 fluids & plasmas Reliability engineering Pipeline transport Conceptual approach 0103 physical sciences GeneralLiterature_REFERENCE(e.g. dictionaries encyclopedias glossaries) Risk criteria Offshore oil and gas Subsea |
| Popis: | Subsea inter-field pipelines are an important element of offshore oil and gas infrastructure. Leakage or fracture of these pipelines is associated with the risk of large economic and environmental losses. One of the main sources of pipeline fracture is pipe defects. The presented section discusses the methodological aspects of assessing the hazard of defects of subsea inter-field pipelines by risk criteria of accidents. A conceptual approach of defects hazard assessing by risk criteria has been formulated, based on analysis the requirement of modern standards. The risk is defined as the probability of negative consequences, the scale of which is determined by the hazard class of pipeline accidents. The probability and scale of accidents are linked by a risk matrix. A method for a three-level assessment of the suitability of a pipeline for operation after in-line inspection has been developed. The method allows assessing the hazard of the most typical defects in subsea pipelines, such as metal loss, metal delamination, cracks and crack-like defects. The allowable defect sizes are determined for the given risk criteria using partial safety factors. The novelty of the methodology lies in the substantiation of safety factors according to risk criteria corresponding to a given class of damage and loss. A scheme for making decisions on the admissibility of defects by risk criteria has been developed. An example of hazard assessment of defects in subsea pipelines is presented. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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