MCNP modelling of the PBMR equilibrium core
Conference
·
OSTI ID:22039437
- PBMR Pty Ltd., Lake Buena Vista Building, 1267 Gordon Hood Avenue, Centurion 0046 (South Africa)
A complete MCNP model of the PBMR equilibrium core is presented, which accounts for the same fuel regions defined in the PBMR core management code, as well as for complete fuel and reflector temperature distributions. This comprehensive 3D model is the means to calculate and characterize the neutron and photon boundary sources of the equilibrium core, and is also used to support some specific core neutronic studies needing detailed geometry modelling. Due to the geometrical modelling approach followed, an unrealistic partial cutting of fuel kernels and pebbles is introduced in the model. The variations introduced by this partial cutting both on the packing fraction and on the uranium load of the modelled core and its corresponding effect on core reactivity and flux levels, have been investigated and quantified. A complete set of high-temperature cross-section data was applied to the calculation of the PBMR equilibrium core, and its effect on the calculated core reactivity is also reported. (authors)
- Research Organization:
- American Nuclear Society, 555 North Kensington Avenue, La Grange Park, IL 60526 (United States)
- OSTI ID:
- 22039437
- Country of Publication:
- United States
- Language:
- English
Similar Records
Distinct element method analyses of fuel spheres in the PBMR core using PFC{sup 3D}
The OECD/NEA/NSC PBMR coupled neutronics/thermal hydraulics transient benchmark: The PBMR-400 core design
Calculational approach and results of the safe shutdown earthquake event for the pebble bed modular reactor
Conference
·
Thu Jul 01 00:00:00 EDT 2004
·
OSTI ID:21160659
The OECD/NEA/NSC PBMR coupled neutronics/thermal hydraulics transient benchmark: The PBMR-400 core design
Conference
·
Sat Jul 01 00:00:00 EDT 2006
·
OSTI ID:22039681
Calculational approach and results of the safe shutdown earthquake event for the pebble bed modular reactor
Conference
·
Sat Jul 01 00:00:00 EDT 2006
·
OSTI ID:22039745