Journal of Research and Development
Open Access

Department of TC Energy, Calgary University, Calgary, Canada

Publications

• Review Article   
  A Newly Improved Fatigue Life Prediction Model for Unconstrained Single Peak Plain Dents Based on EPRG Approach
  Author(s): Ming Gao, Ravi Krishnamurthy and Rick Wang*
  
  The objective of this ongoing work is to refine the European Pipeline Research Group’s (EPRG) methodology for fatigue life assessment of unconstrained single peak plain dents in pipelines under cyclic internal pressure. EPRG 2000 was recently adopted by the American Petroleum Institute (API) and American Society of Mechanical Engineers (ASME) (API 579/ASME FFS) as an alternative approach recommended for Level 2 plain dent fatigue life assessment. EPRG 2000, along with its earlier version, EPRG 1995, has been commonly used for dent integrity assessment in North America and worldwide because it is recommended by the highly recognized Pipeline Defect Assessment Manual (PDAM). However, Pipeline industry practice in North America found that the EPRG equations provide conservative, in many cases, very conservative predictions that resulted in unnecessary excavations and repairs. There.. View More»
  DOI: 10.35248/2311-3278.24.12.248

  Abstract HTML PDF