Structural analysis of a high temperature gas reactor pressure vessel

The structural analysis of a helium-graphite HTGR vessel was carried out. These kinds of reactors are suitable for electric energy generation, heat sources, and also for hydrogen production and water desalination.

Maintenance and operation costs are small due to their modular design and the benefit of in-operation fuel renewal. The thermal and mechanical stresses were obtained for the vessel and nozzles. Fatigue and fracture mechanics evaluation were done according to ASME code requirements.