Tateki Nakamura
Turbine Plant Design Dept., Hitachi Works, Power Systems, Hitachi, Ltd.
Kiyoshi Segawa
Energy and Environmental Systems Lab., Power Systems, Hitachi, Ltd.
Nobuhiro Isobe, Dr. Eng.
Hitachi Research Lab., Research & Development Gr., Hitachi, Ltd.
Takashi Saito
Nuclear Power Service Business Dept., Hitachi-GE Nuclear Energy, Ltd.
Steam turbines are a critical part of the power plants and demands for larger size, higher reliability, and higher efficiency will only strengthen in the current environment where it is clear that the role of large-scale nuclear power plants will grow as means to reduce CO2 and counter global warming. In particular, the long blades in the low-pressure stage are the most important components in the steam turbine in terms of turbine efficiency and output, and Hitachi has been working on the design and development of these blades to meet the demand for high reliability and high efficiency by designing blades based on the latest finding. In 2006, in response to damage to stage 12 (L-2) blades in a low-pressure turbine in an ABWR, Hitachi used the latest analysis techniques to design a new blade and test its structural reliability. Testing of the model turbine was carried out under steam load and operating tests were performed on the full-scale model that had been constructed and/or augmented at the recently installed test facility.
Turbine Plant Design Department, Hitachi Works, Power Systems, Hitachi, Ltd.
TEL: +81-294-55-2687
FAX: +81-294-55-9857
steam turbine, turbine blade, ABWR, test facility
