JP

Effort to improve efficiency of coal-fired power plants
(Efficiency improvement by replacement of turbine)

Hokuriku Electric Power Company

Outline

Efficiency improvement by replacement of turbines (Reduction of CO2 emissions)

Description

We aim to reduce CO2 emissions by efficiency improvement through replacement of turbines, such as the followings.  (Reduction effect: about 200,000t)

  • Increase of the number of stages of moving blades
  • Loss control of steam flow by improving shapes of moving blades and nozzles
  • Reduction of steam leakage by improvement in the construction of steam seal on the outer periphery of moving blades and the space in the rotor steam seal

Unit

Output

Measures

(Replacement year planned)

Tsuruga Unit 1

500 MW

Replacement of low pressure turbine (FY 2021)

〔High and medium-pressure turbines have been replaced in 2013〕

Tsuruga Unit 2

700 MW

Replacement of high,medium and low-pressure turbines (FY 2022)

Nanao Ohta Unit 1

500 MW

Replacement of high,medium and low-pressure turbines (FY 2021)

Nanao Ohta Unit 2

700 MW

Replacement of high,medium and low-pressure turbines (FY 2020)

Supplementary information

Efforts of Hokuriku Electric Power Group for achieving the Long-term Vision (FY2020)
http://www.rikuden.co.jp/press/attach/20043002.pdf(Japanese )

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