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Keywords:

  • fire exposure;
  • vessel failure;
  • relief systems;
  • depressuring systems;
  • embrittlement;
  • flame jets;
  • wall temperatures;
  • hoop stress;
  • pool fires

Determining if and when a vessel and/or piping component is going to fail under fire exposure and/or from cold temperature embrittlement is an important factor in consequence analysis and risk assessment. This article describes detailed methods for establishing the conditions for vessel/piping failure and whether the material of construction for vessels and piping is properly selected for fire exposure and/or cold depressuring/relief.

Several case studies are used to illustrate important concepts dealing with how wall temperatures should be calculated for single and multiphase systems in order to establish if a vessel and/or a piping component is going to fail. © 2014 American Institute of Chemical Engineers Process Saf Prog 34: 64–71, 2015