Kansai Electric Power -power with heart-

Nuclear Power Information

Mihama nuclear power station
Mihama nuclear power station
5-3 Kawasakayama, Nyu 66, Mihama-cho, Mikata-gun, Fukui Prefecture
Unit Reactor
type
Rated
power
output
Commercial
operation
Unit 1

Pressurized
Water
Reactor
(PWR)

340MW End of operation on April 27, 2015
Unit 2 500MW End of operation on April 27, 2015
Unit 3 826MW Started in December 1976
Takahama nuclear power station
Takahama nuclear power station
1 Tanoura, Takahama-cho, Ohi-gun, Fukui Prefecture
Unit Reactor
type
Rated
power
output
Commercial
operation
Unit 1

Pressurized
Water
Reactor
(PWR)

826MW November 1974
Unit 2 826MW November 1975
Unit 3 870MW January 1985
Unit 4 870MW June 1985
Ohi nuclear power station
Ohi nuclear power station
1-1 Aza Yoshimi, 1 Oshima, Ohi-cho, Ohi-gun, Fukui Prefecture
Unit Reactor
type
Rated
power
output
Commercial
operation
Unit 1

Pressurized
Water
Reactor
(PWR)

1,175MW March 1979
Unit 2 1,175MW December 1979
Unit 3 1,180MW December 1991
Unit 4 1,180MW February 1993

btn Firm determination to enhance the safety of nuclear power generation

Firm determination to enhance the safety of nuclear power generation

A nuclear power plant is designed to assure its safety based on the concept, stopping the fission chain reaction, cooling the fuel and confining radioactive materials in case of an emergency. However, the accident at TEPCO's Fukushima Daiichi Nuclear Power Station caused by tsunami following the massive magnitude 9.0 earthquake occurred on March 11, 2011 deprived the Fukushima Daiichi of its cooling and confining functions, which led to severe accidents.

The "New Regulatory Requirements" stipulated following the accident incorporate enhanced design bases to prevent a similar severe accident from occurring as well as countermeasures against earthquakes and tsunamis, taking into account the lessons learned from the accident. In addition, the New Regulatory Requirements cover a wide range of natural phenomena, including volcanic activities, tornadoes, forest fire as well as earthquakes and tsunamis, considering Japan-specific features prone to natural disasters.

The Kansai Electric Power Co. will commit ourselves to promoting our voluntary safety initiatives as well as stringently adhering to the New Regulatory Requirements.

About Units 3 and 4 of Takahama Power Station

Targeting a Service Life Exceeding 40 Yearspdf [PDF 107KB]

Decommissioning Mihama Units 1 & 2 with a Priority on Safetypdf [PDF 35KB]

Provisions against Potential Tsunamis
Provisions against Potential Tsunamis

We will install tide embankments to prevent tsunami from flooding into the plant premises. In case of a tsunami flooding, protective walls and water tight doors will protect the plant facilities and equipment.

Assuring sustained cooling of the reactor under any circumstances
Assuring sustained cooling of the reactor under any circumstances

We are conducting drills repeatedly to ensure immediate response to an emergency while incorporating more diversified and redundant cooling functions.

Provisions against Potential Natural Disasters
Provisions against Potential Natural Disasters

We are installing the protective measures while assuming natural disasters of a significantly greater level of severity than conventional assumptions.