NDLI: Integrity of Pipeline in Area of Mine Subsidence

Content Provider	The American Society of Mechanical Engineers (ASME) Digital Collection
Author	Zhang, Fan Liu, Ming Wang, Yong-Yi Yu, Zhifeng Tong, Lei
Copyright Year	2012
Abstract	Ground subsidence can threaten the integrity of buried pipelines in areas with prior and on-going mining activities. The integrity can be assessed by comparing the strain demand and the strain capacity. The Tensile Strain Capacity (TSC) of the pipeline is dominated by the girth welds due to their relatively inferior property in comparison to the base pipe materials. Parametric models developed at CRES for US DOT and PRCI allow the evaluation of girth welds TSC based on pipe dimensions, base material and weld properties and flaw size. The local buckling of the pipeline under compressive or bending loads determines the Compressive Strain Capacity (CSC). Three existing standards are used to evaluate CSC, including DNV OS-F101, CSA Z662 and API RP 1111. The strain demand analysis of the pipeline under multiple subsidence scenarios is presented in a companion paper. The strain demand is compared with TSC and CSC separately to evaluate the pipeline integrity. The use of CRES TSC models for selecting a variety of design and material parameters to improve TSC is illustrated.
Sponsorship	International Petroleum Technology Institute Pipeline Division
Starting Page	403
Ending Page	413
Page Count	11
File Format	PDF
ISBN	9780791845158
DOI	10.1115/IPC2012-90642
Volume Number	Volume 4: Pipelining in Northern and Offshore Environments; Strain-Based Design; Risk and Reliability; Standards and Regulations
Conference Proceedings	2012 9th International Pipeline Conference
Language	English
Publisher Date	2012-09-24
Publisher Place	Calgary, Alberta, Canada
Access Restriction	Subscribed
Subject Keyword	Strain based design Pipeline integrity Strain capacity Design Mining Welded joints American petroleum institute Pipelines Dimensions Pipes Buckling Stress
Content Type	Text
Resource Type	Article

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