Steam turbine ARABELLE 1700

for nuclear applications

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. Our Arabelle nuclear steam turbine features: • A compact, powerful, efficient, and reliable turbine • 60% of the power comes from highly efficient single flow expansion • A unique combined HP/IP module • Standard interface/footprint for 50 Hz  and 60 Hz • A range of last-stage blade sizes for each frequency (50 Hz and 60 Hz) • The largest last stage blade in operation (LSB69) • The largest last stage blade in construction (LSB75) • Proven blade structure with demonstrated reliability • Two, three or four LP modules for excellent back-pressure fit 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.