Design Characteristics of SBWR
Lead designer: General Electric
Power
- Gross thermal power = 1800 MWt
- Net electrical power = 600 MWe
- Average fuel rod power rating = 141 W/cm
- Average core power density = 36.6 kW/l
Primary coolant system
- Type: Natural recirculation
- Operating pressure = 72 kg/cm-cm
- Steam outlet temperature = 286 C
- Number of recirculation pump = 0
- Recirculation mass flow = 24,000 T/Hr.
Turbine system
- Type: TC2F-52in (13.2 cm)
- Number: 1
- Maximum rating = 600 MWe
- Speed = 1800 rev./min
- Inlet pressure = 9 kg/cm-cm
- Inlet temperature = 284 C
- (diagram)
- Reactor Core
- Active height = 2.7 m
- Active diameter = 5.2 m
- Pressure vessel
- Internal height = 22 m
- Internal diameter = 5.9 m
- Minimum wall thickness = 17.4 cm
- Containment
- Pressure suppression/reinforced concrete with passive cooling
- Design pressure = 3.9 kg/cm-cm
Materials
- Coolant: Light water
- Coolant inlet temperature: 420F (216C)
- Coolant outlet temperature: 550F (288C)
- Main coolant system pressure: 1025 psig (7.07 MPa)
- Moderator: Light water
- Fuel: Uranium Dioxide (UO2)
- Fuel geometry: 8x8 or 9x9
- Number of assemblies = 732
- Fuel pin diameter = 12.3 mm
- Active fuel length = 2743 mm
- Cladding: Zircaloy-2
- Control rod: B4C
- Number of control rods = 177
- Control rod form: Cruciform
- Control rod drive power source: Electric/hydraulic
Other
- Operating cycle between refuelings: 24 months from startup to shutdown
- Refueling outage duration: 45 days
- Estimated yearly total occupational radiation exposure per reactor: < 100 person-rem
