Transient thermo-hydraucic analysis of the windowless target system for the lead bismuth eutetic cooled accelerator driven system

The target system, whose function is to supply an external neutron source to the ADS sub-critical core to sustain the neutron chain reaction, is the most critical part od an ADS being subject to severe thermo-mechanical loading and material damage due to accelerator protons and fission neutron neutrons. A windowless option was chosen as reference configuration for the target system of the LBE-cooled ADS within the European PDS-XADS project in order to reduce the material damage and to increase its life. This document deals with the thermo-hydraulic results of the calculations performed with STAR-CD and RELAP5 codes for studying the behaviour of the windowless target system during off-normal operating conditions. It also reports a description of modifications properly implemented in the codes needd for this analysis. The windowless target system shows a satisfactory thermo-hydraulic behaviour for the analysed accidents, except for the loss of both pumps without beam shut-off and the beam trips lasting for more than one second.

@InProceedings{BFM06a,
  author       = {Bianchi, F. and Ferri, R. and Moreau, V.},
  title        = {Transient thermo-hydraucic analysis of the windowless target system for the lead bismuth eutetic cooled accelerator driven system},
  booktitle    = {ICONE 14: International Conference On Nuclear Engineering},
  month        = {july},
  year         = {2006},
  organization = {ASME},
  note         = {idxproject: PDS-XADS},
  url          = {https://publications.crs4.it/pubdocs/2006/BFM06a},
}