The Arabelle nuclear steam turbine suits power outputs ranging from 700 MW to 1,900 MW. Arabelle has been the largest turbine in operation worldwide for the past 20 years and has two units in China which each produce up to 1,750 MW.
Fully adaptable steam path
Our Arabelle nuclear steam turbine features:
Arabelle nuclear steam turbine improves on the previous generation low pressure (LP) exhaust design with fully independent LP cylinders. By connecting the LP inner casing to an end wall rather than the LP outer casing and ultimately the turbine table, the outer casing no longer needs to act as support. This simple but powerful design innovation greatly reduces turbine load on the foundation, caused by vacuum variations or condenser forces while improving centering of moving and stationary parts.
The entire family of Arabelle nuclear turbine blades features three-dimensional profiles engineered with high aerodynamic performance in mind. All rotating blades except the last stage blade (LSB) include integral shrouds to reduce loss. The resulting continuous blade structure helps create reliable and consistently good frequency control. To provide effective vibration control during service, an integral streamlined snubber interconnects the LSBs.
Our power conversion solutions for large and very large reactors are based on our Arabelle steam turbine technology platform.
ARABELLE 1700 | ARABELLE 1000 | |
---|---|---|
Typical Reactor Output | 3,500 – 4,900 MWth | 2,500 – 3,500 MWth |
Shaft Line Rotational Speed | Half speed | Half speed |
HP/HIP Turbine Type | 25NHIP17 | 25NHIP10 |
Number of LP Turbines | 3 or 4 | 2 or 3 |
Last Stage Blade Length in Inches (“) | 57, 69, 75 | 57, 69, 75 |
ARABELLE 1700 | ARABELLE 1000 | |
---|---|---|
Reactor Type | EPR | CPR1000 |
Configuration | Combined HIP | Combined HIP |
LP Turbine Type | LP75, LP69, LP57 | LP57 |
Speed (rpm) | 1,500 | 1,500 |
Output | 1,755 MW | 1,080 MW |
Heaviest Lift – LP Rotor (tons) | 280 | 190 |
Power Train Width (m) | 20 | 17 |
Hook Height (m) | 15 | 14.5 |
Power Train Length including Generator (m) | 70 | 56 |
Largest nuclear steam turbines ever made to boost U.K. grid
Powering Egypt Forward
Largest nuclear steam turbines ever made to boost U.K. grid
Powering Egypt Forward
GE Steam Power will supply the two turbine islands for Hinkley Point C (HPC), which include the Arabelle steam turbine, generator, and other critical equipment. Already the largest steam turbine in operation in Taishan, China, the Arabelle produces 2% more power output than a traditional configuration and has a 99.96% reliability rate. HPC’s Arabelle turbines will be the largest ever built—longer than a Boeing 747 with its associated generator —and capable of producing 1,770 MW each.
Output from Hinkley Point C
homes powered
tons of CO2 avoided each year
GE Steam Power will deliver 4 x 1,200 MWs Arabelle steam turbines and generators for El Dabaa, Egypt’s first nuclear power plant. The power plant will deliver 4.8 GW of dependable, reliable, CO2 free energy—enough to power more than 4 million Egyptian homes.
output
homes powered