Research Article
Conceptual Design of a 10 MW Multipurpose Research Reactor Using VVR-KN Fuel
Table 1
Main design parameters and design targets of the MPRR core.
| | Technical parameters | Description/value |
| | Reactor type | Open swimming pool | | Thermal power | 10 W | | Coolant and moderator | Water | | Reactor materials | Beryllium | | Core height (mm) | 600 | | Fuel type | VVR-KN | | 235U enrichment (wt.%) | 19.75 | | Direction of forced convection | Downward | | Maximum coolant temperature at inlet | 45°C | | Number of horizontal experimental channels | 4–6 | | Number of vertical experimental channels | 15–18 | | For NTD (8-inch ingots) | 3–4 | | For RI (2-3 channels with hydraulic transfer systems) | 10–12 | | For NAA with pneumatic transfer systems | 2–3 | | Number of control rods | 9–12 | | Shim rods (ShR), B4C | 6–9 | | Safety rods (SR), B4C | 2–3 | | Automatic regulating rod (AR), stainless steel | 1 | | Maximum thermal neutron flux at core center (n·cm−2s−1) | 2.0–3.0 × 1014 | | Thermal neutron flux at in-core vertical irradiation channels (n·cm−2s−1) | Up to 1.5 × 1014 | | Thermal neutron flux in beryllium reflector (n·cm−2s−1) | 0.5–1.0 × 1014 | | Thermal neutron flux at irradiation channel for NDT (n·cm−2s−1) | 1.0–2.0 × 1013 | | Thermal neutron flux at horizontal beam tubes (n·cm−2s−1) | 0.5–1.5 × 1013 | | Average discharged burnup | 50% | | Temperature coefficient (%∆k/k) | −0.15 | | Maximum surface temperature of fuel elements | <98°C | | Onset nucleate boiling ratio | >1.3 |
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