Press Release Back Number(2006)

Construction at Hamaoka Nuclear Power Station No. 3 to improve earthquake tolerance

July 20, 2006
Chubu Electric Power Co., Inc.

Hamaoka Nuclear Power Station is voluntarily doing construction on each power station unit to improve the station's earthquake tolerance. The station is currently being evaluated to withstand tremors (horizontal seismic tremors of approximately 1000 gal at bedrock) in the target area to enhance the station's capacity to handle earthquakes.

(Announced as of January 28, 2005 )


Together with earthquake tolerance evaluations at station No. 3 and other construction previously started, the following construction is currently underway.

The 14th scheduled maintenance planned to start on July 21 will include pipe support renovations, electrical circuit support renovations, and heat-exchanger support renovations for excess heat removal systems.

All construction is scheduled for completion in the second half of FY 2007.


< Earthquake tolerance improvements at station No. 3 >


  • • Pipe support renovations (performed as part of 14th scheduled maintenance)
  • • Electrical circuit support renovations (performed as part of 14th scheduled maintenance)
  • • Heat-exchanger support renovations for excess heat removal systems (performed as part of 14th scheduled maintenance)
  • • Renovations to the rail guide on the fuel exchanger
  • • Renovations to the crane support members on the ceiling of the reactor building
  • • Oil tank replacements
  • • Groundwork improvements behind retention wall
  • • Groundwork improvements around pipe ducts (under construction)
  • • Exhaust stack improvements (under construction)