The ASME PVP Bolted Joint Reliability Symposium (BJRS) promotes knowledge sharing, technological progress and international co-operation for advancing sealing technology for the oil and gas, aeronautical, automotive and nuclear industries. The presentations will disseminate the scientific and real-world knowledge in the area of sealing, including current and future design rules for bolted flange connections based on tightness (ASME SWG-BJ, EN1591), modern flange assembly guidelines and best practices (ASME PCC-1), gasket selection and assembly for obtaining desired performance/reliability (Example LDAR), and sharing of Lessons-Learned and Best Practices of critical applications including hydrogen technology.

Tracks/Topics

• Understanding BFC Design Methods
  • ASME Section VIII division 1 Appendix 2
  • New BFJ design rules, SWG on BFC
  • EN1591
  • JIS under adoption
  • Other methods (Analytical, FEM, Non-Circular Flanges, Flat Face Flanges)


• BFC Assembly
  • Torque Calculation Methods
  • PCC1, Appendix F, Alternative Flange Assembly Methods & Field Experience
  • Factors Involved in Determining Nut Friction Factor
  • Hydraulic Tensioning and Torquing
  • Elastic Interaction
  • PCC-1 Appendix A Flange Assembler Qualification


• Gaskets and Packings
  • Torque Calculation Methods
  • New Technologies
  • Gasket and Packing Selection
  • Performance Testing Methods/Standards and Their Use
  • EN13555, ROTT, HOBT2 w/Cycles, ASTM (Gb a Gs, m & Y), API622


• Design and Testing of HPHT Flanges for Oil and Gas Applications
• Design Verification Analysis Methodology
• Allowable Preload Stresses
• Design Allowable Stresses
• Combined Load Conditions
• Fatigue Performance
• Sealing Performance
• Performance Capacity Charts
• Design Validation Testing Methodology

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