... from in-service pipelines in Canada, we propose a measurement error model for the ILI-reported defect length. The implications of the proposed measurement error model for the system reliability of a corroded pipeline segment containing many corrosion defects are investigated through a realistic...

... defect defect length defect Safety Analysis on Welded Joint of Submarine Oil and Gas Pipeline Chunrun Li1, Huli Niu1, Zhijian Wang2, Xiao Zhang2, Yougeng Guan2, Zongtao Fang1 1 Research Institute of Engineering Technology, CNPC Tianjin, China 2 Offshore Engineering Division of CNPC offshore...

... with 2 probes (Case 3) Fig.8 Comparison of reflected wave amplitude in slant defects test with 1 probe (Case 4) CONSIDERATION OF DEFECT IDENTIFICATION Defect identification by decibel drop method The decibel drop method using normal beam for detecting defect length parallel to plate is shown in Fig.9...

.... The difficulty increases when some defects are included within the structural members. There are many studies done on the static stress concentration problems, and theresults are commonly used for the design of the structures. numerical simulation free surface end radius defect defect length peak...

... toughness wang strain limit test data weld midstream oil & gas defect length specimen strain capacity apparent toughness tensile strain limit equation procedure weld metal safety factor tensile strain capacity proceedings girth weld ctod toughness offshore pipeline...

... longitudinal stress pipeline corrosion burst test equation safety factor partial safety factor acceptance equation riser corrosion defect length defect size Proceedings of the Eleventh (2001) International Offshore and Polar Engineering Conference Stavanger, Norway, June 17-22, 2001 Copyright ©...

... defect length riser corrosion criteria pipeline corrosion metal-loss defect prediction geometry alternative approach areal defect materials and corrosion strength transition defect wall thickness actual failure pressure flowline corrosion alternative criterion criterion defect size...