14.1 Introduction
14.2 RBWR System
14.2.1 Overview
Item | RBWR | ABWR |
---|---|---|
Thermal power (MWt) | 3,926 | 3,926 |
Electric power (MWe) | 1,356 | 1,356 |
RPV diameter (m) | 7.1 | 7.1 |
Core pressure (MPa) | 7.2 | 7.2 |
Number of fuel bundles | 720 | 872 |
Fuel lattice type | Hexagonal | Square |
Lattice pitch (mm) | 199 | 155 |
Number of control rods | 223 | 205 |
Control rod type | Y-type | Cross shape |
14.2.2 Core Calculation Method
14.2.3 RBWR-AC
Item | RBWR-AC | RBWR-TB | RBWR-TB2 |
---|---|---|---|
Core height (mm) | 1,343 | 993 | 1,025 |
Fuel rod diameter (mm) | 10.1 | 7.4 | 7.2 |
Fuel rod pitch (mm) | 11.4 | 9.4 | 9.4 |
Fuel rod gap (mm) | 1.3 | 2.0 | 2.2 |
Pellet diameter (mm) | 8.7 | 6.1 | 6.0 |
Number of fuel rods | 271 | 397 | 397 |
Coolant flow rate (t/h) | 2.6 × 104
| 3.8 × 104
| 2.4 × 104
|
Core exit quality (%) | 35 | 21 | 36 |
Void fraction (%) | 53 | 42 | 56 |
Pressure drop (MPa) | 0.14 | 0.19 | 0.06 |
HM inventory (t) | 144 | 77 | 76 |
Puf/HM in fissile zone (wt%) | 15.7/20.1 | 13.9 | 25 |
Puf inventory (t) | 9.0 | 4.5 | 8.3 |
Burn-up (GWd/t) | 45 | 55 | 65 |
MLHGR (kW/m) | 47 | 47 | 47 |
MCPR | 1.28 | 1.3 | 1.28 |
Void reactivity coefficient (Δk/k/%void) | −2.4 × 10−4
| −2 × 10−4
| −4 × 10−4
|
Breeding ratio | 1.01 | – | – |
TRU fission efficiency (%) | – | 51 | 45 |
14.2.4 RBWR-TB
14.2.5 RBWR-TB2
Nuclide | RBWR-AC | RBWR-TB | RBWR-TB2 | ||||
---|---|---|---|---|---|---|---|
Charge | Dischargea
| Charge | Dischargea
| Charge | Dischargea
| LWR spent fuel | |
Np-237 | 0.4 | 0.4 | 0.1 | 0.1 | 1.9 | 1.4 | 6.7 |
Pu-238 | 2.9 | 2.9 | 4.7 | 4.7 | 6.3 | 6.7 | 2.8 |
Pu-239 | 43.5 | 43.5 | 9.5 | 9.5 | 27.7 | 25.5 | 48.8 |
Pu-240 | 36.3 | 36.3 | 39.5 | 39.6 | 38.5 | 40.1 | 23 |
Pu-241 | 5.1 | 5.1 | 4.4 | 4.4 | 5.5 | 5.4 | 7 |
Pu-242 | 5.1 | 5.1 | 25.4 | 25.4 | 9.6 | 10.1 | 5 |
Am-241 | 3.6 | 3.6 | 4.7 | 4.7 | 5.4 | 5.4 | 4.7 |
Am-242m | 0.2 | 0.2 | 0.2 | 0.2 | 0.2 | 0.2 | 0 |
Am-243 | 1.3 | 1.3 | 4.7 | 4.7 | 2.4 | 2.4 | 1.5 |
Cm-244 | 1.1 | 1.1 | 4.1 | 4 | 1.8 | 2 | 0.5 |
Cm-245 | 0.4 | 0.4 | 1.2 | 1.2 | 0.5 | 0.6 | 0 |
Cm-246 | 0.1 | 0.1 | 1 | 1 | 0.2 | 0.2 | 0 |
Cm-247 | 0 | 0 | 0.2 | 0.2 | 0 | 0 | 0 |
Cm-248 | 0 | 0 | 0.2 | 0.2 | 0 | 0 | 0 |
Cm-249 | 0 | 0 | 0.1 | 0.1 | 0 | 0 | 0 |
Puf(t) | 1.94 | 1.96 | 1.14 | 1.06 | 2.06 | 1.74 | 0.32 |
TRU(t) | 3.99 | 4.03 | 8.18 | 7.62 | 6.20 | 5.63 | 0.58 |