PCC-1 Appendix O – Flange Assembly Rules

COMPRESS provides the ability to assess bolted joints per ASME PCC-1 Appendix O. This procedure provides guidance on determining the appropriate assembly bolt torque\stress with due consideration for joint integrity.

Two approaches are available, the simple approach and the joint approach.

With the simple approach, an appropriate bolt stress is determined based on the target gasket stress. This is then converted to a target bolt torque.

With the joint approach, the following conditions are considered before arriving at a target bolt torque:

  • Sufficient gasket stress to seal the joint
  • Damage to the gasket
  • Damage to bolts
  • Damage to the flange
ASME PCC-1 Appendix O Variables

Featured Heat Exchanger Design Capabilities

Efficient Modeling Simplify heat exchanger design with a guided workflow and built-in ASME and TEMA code compliance. Design Conditions Simplify complex heat exchanger design by allowing multiple operating conditions to be evaluated simultaneously, including true MAWP determination. Tube Bundle Streamline tube bundle replacement by modeling and analyzing only the bundle without recreating the full exchanger. Multiple Codes Supports multiple ASME and TEMA code editions, automatically applying the correct allowable stress values for each. Flange Design Automate complex flange analysis by accounting for shared bolting, governing loads, and iterating conditions to determine accurate MAWP. FEA for Expansion Joints Integrated FEA for TEMA expansion joints, enabling fast, automated analysis with minimal setup and optimized performance. Lift Lugs for Channels Enable lift lug design directly on exchanger subassemblies, eliminating the need to recreate components in separate files. ASME Reports Generate comprehensive, easy-to-navigate ASME calculation reports covering all design and hydrotest conditions. ASME PCC-1 Appendix O Evaluate bolted joints per PCC-1 Appendix O, determining optimal bolt stress and torque while ensuring gasket, bolt, and flange integrity. Automated Drawings The Codeware Interface is an Autodesk Inventor add-in that generates drawings and solid models from COMPRESS designs Finite Element Analysis in COMPRESS