Long track record of performance and reliability for medium-size nuclear reactors

A compact solution

For medium-size reactors. Full-speed technology that offers easy maintenance.

A powerful, efficient turbine

Including cutting-edge blading technology adapted to any backpressure conditions, the D200 turbine can feature two or three LP modules for enhanced vacuum fit.

A long track record

More than 770000 operating hours.

The D200 turbine offers a robust architecture in which the steam first expands in a double-flow HP path. After moisture separation and reheat, it then expands in four or six LP flows .The turbine rotors, all of monoblock construction, are rigidly coupled to each other and to the generator rotor.

Each rotor is supported by a pair of journal bearings.

The HP model is the rightful heir of the most powerful 3,000 rpm turbines with saturated steam in operation in UK and China (with more than 770,000 hours of operation), and uses impulse-type blading and features six stages to increase both global efficiency and final power output. HP steam exhausts are connected to the moisture separator reheater (MSR) by four cross-under pipes. This design allows servicing of the turbine without disassembling the exhaust pipes.


Product Specifications

Typical Reactor Output

1500-2200 MWth

Shaft Line Rotational Speed (rpm) 3000
HP/HIP Turbine Type 50NH2F07
Number of LP Turbines 2 or 3
Last Stage Blade Length in Inches (“) 39
Reactor Type


Configuration Double flow HP
HP/HIP Turbine Type 50NH2F07
Number of LP Turbines 3
LP Turbine Type LP39
Frequency (Hz) 50
Speed (rpm) 3000
Output (MWe) 715
Heaviest Lift – LP Rotor (tons) 80
Power Train Width (m) 17
Hook Height (m) 15
Power Train Length incl. Generator (m) 53