Comparison of Fracture Assessment of Offshore Pipelines with Flaws at Girth Welds
Publish place: کنفرانس بین المللی مهندسی عمران
Publish Year: 1395
نوع سند: مقاله کنفرانسی
زبان: English
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شناسه ملی سند علمی:
CCIVIL01_125
تاریخ نمایه سازی: 21 شهریور 1395
Abstract:
Offshore pipelines are one of the most effective methods for long-distance transportation of oil and gas. Currently, there are number of fitness for purpose procedures for assessing the acceptability of flaws in pipeline girth welds. One of these methods is fracture mechanics based procedures that is designed to: (1) relax workmanship flaw acceptance criteria and (2) prepare a route of determining acceptability of flaws found by Automatic Ultrasonic Test (AUT) instead of Radiographic Test (RT). The potential benefit of this procedure is a reduction in costs by minimizing the need for repair and the imposed delay. In this paper, workmanship and fracture mechanics based methods of defect assessment are discussed thoroughly and afterward are compared in order to determine each one range of applicability
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Authors
Seyed Mohammad Hossein Sharifi
Assistant Professor, Department of Offshore Structures Engineering, Petroleum University of Technology, Abadan, Iran
Mehran Kaveh
Master Student, Department of Offshore Structures Engineering, Petroleum University of Technology, Abadan, Iran
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