From the world’s most powerful steam turbine in operation to modular designs optimized for SMRs, our turbines are suitable for any reactor type from 50 MW to 1900 MW.

  • Increased efficiency

    Our advanced 3D blading platform helps enhance the load grade and customize the flow path for project specific conditions and increased steam turbine performance.

  • High reliability

    Advanced lifetime assessment procedures and long-term testing process increase our steam turbine reliability and availability. 

  • Enhanced flexibility

    Advanced fracture mechanic methods provide reliable lifetime assessment of the steam turbine components and increased cycling capabilities. 

  • Full integration

    Operational feedback is systematically applied across our entire modular turbine product portfolio to insure full integration.

Advanced steam turbine blading

Innovative blading technology is apparent in our:

  • Modern, three-dimensional profile that results in higher steam power efficiency
  • High pressure (HP), intermediate pressure (IP), and low pressure (LP) front stage blades that are milled from a single forging for excellent mechanical integrity and higher reliability

Deploying both impulse and reaction type blading technology to optimise performance and cost for maximum customer value.

Powerful last stage blades

Our enhanced last stage blade portfolio for steam turbines offers:

  • Dense staggered last stage blade sizes for project specific cold-end conditions and increased steam turbine efficiency

  • A robust module with enhanced grooves and blade attachments for higher turbine reliability

Single bearing efficiency

Our multi-casing steam turbines have a single bearing between each turbine section for:

  • Avoidance of load shifting for higher reliability

  • Efficient shaft alignment for reduced construction time

  • Shorter overall turbine shaft length for lower building costs

Steam turbine welded rotors

Introduced in 1930, our welded rotor technology has stood the test of time. We have engineered and manufactured the latest technologies to provide efficient and reliable steam turbines for nuclear applications. 

  • Appropriate forging material selection, based on temperature level at each section of the steam turbine
  • Stress reduction during thermal transients for faster and more frequent load cycling capability
  • Better access for ultra-sonic testing equipment, resulting in higher reliability

Our steam turbines

ARABELLE

Our highly efficient flagship turbine range, suiting all reactor types from 700 to 1200MW and 1,200 to 1,900MW respectively.

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STF - N700

The STF - N700 turbine offers robust architecture and cutting-edge blading technology adapted for any backpressure condition.

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Our turbine portfolio for any reactor size

Product Application Steam parameters Output Range
ARABELLE 1700 Reheat - half speed Up to 75 bar/ 1090 psig, 300°C/ 570°F 1,200 - 1,900 MW
ARABELLE 1000 Reheat - half speed Up to 75 bar/ 1090 psig, 300°C/ 570°F 700 - 1,300 MW
STF-N700 Reheat - full speed Up to 300 bar/ 4350 psig, 630°C/ 1150°F 350 - 800 MW
SFT-N400 Reheat - full speed Up to 185 bar/ 2683 psig, 600°C/1112°F 250 - 500 MW
SFT-N200 Reheat - full speed Up to 185 bar/ 2683 psig, 600°C/ 1112°F 100 - 350 MW
SFT-N100 Reheat, non-reheat - full speed Up to 165 bar/ 2030 psig - 565°C/1050°F 50 - 130 MW

Cyber Security

Arabelle Solutions steam turbines are protected by enhanced cyber security defences, designed to meet all major global and local cybersecurity standards and regulations. We apply a holistic multi-layer protection strategy, providing nuclear power plants with an up-to-date all-around cyber security solution. 

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Our flagship Arabelle turbine

Suitable for large and very large reactors and with an impressive reliability record the Arabelle turbine is highly efficient, reliable, and effective. 

The turbine suits power outputs ranging from 700 MW to 1,900 MW, making it the largest steam turbine in operation worldwide. 

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