Steady implementation of safety measures at Shika Nuclear Power Station

 In November 2015, we decided to conduct additional work because of the change of fire prevention measures and internal flooding countermeasures as well as the related work for seismic safety improvement, with taking account of the preceding review process of nuclear power stations of other electric utilities.
 We try to steadily implement the work for further safety improvement and to complete the work at an early stage by grasping the situations of review process on our Unit 2 and other nuclear power stations and new knowledge for taking appropriate measures in advance.


Voice : Pursue the world's highest level of safety in a concerted effort under the close-knit "Team Shika."

Toshinao Furuya, Superintendent of Shika Nuclear Power Station Hokuriku Electric Power Company We put the highest priority on safety in taking safety measures at Shika Nuclear Power Station with a firm determination to prevent an accident like that at Fukushima Daiichi Nuclear Power Station from happening again.
 Construction work of the expanded emergency measures facility, installation of large volume fresh water storage tank and firebreak creation have almost been completed in March 2016 and the work for safety measures has steadily been undertaken.
 Safety measures will never come to an end. We pursue the world's highest level of safety and implement safety measures in integrated cooperation with the employees of our company and partner companies working at Shika Nuclear Power Station as the close-knit "Team Shika," in order to gain trust from and bring comfort and relief to the people in the local communities.


Whole picture (image) of safety measures

Whole picture (image) of safety measures

Details of safety measures



Safety measures



Prepare for earthquakes

Improvement of earthquake resistance

Assuming ground motion of 1,000 gal.

Seismic safety improvement work



Ensure power sources

Reinforcement of external power sources

Multifaceted power sources

Deployment of gas turbine generators as permanent equipment, high-capacity power supply vehicles and other measures.

Main body of filtered vent equipment (July 2015) / Scene at the end of March 2016

Reinforcement of measures for ensuring power generator fuel

Installation of underground gas oil storage tank.

Installation of underground gas oil storage tank



Prepare for tsunamis

Prevention of flooding into nuclear power station site and buildings

Installation of tide embankment & tide barriers and replacement to watertight doors.

Installation of tide barrier / Installation of tide embankment



Ensure water for cooling

Diversification of water sources

Installation of fresh water storage tank, use of Otsubogawa Dam, etc.

Installation of fresh water storage tank

Multifaceted water injection functions

Deployment of water injection vehicle for high places and fire engines and other measures.

Deployment of water injection vehicle for high places

Diversification of cooling functions

Installation of alternative heat exchange systems, reinforcement of reactor depressurization functions.




Prevent diffusion of radioactive substances

Prevention of hydrogen explosion

Installation of transportable nitrogen supply device and other measures.

Installation of transportable nitrogen supply device

Reduction of radioactive substance release

Installation of filtered vent equipment for containment vessel and other measures.

Installation of filtered vent equipment for containment vessel



Installation of building for emergency measures

Installation of building for emergency measures and expansion of command & control area

Appearance of expanded command & control area (expanded emergency measures facility) / Scene inside command & control area



Measures against other disasters

Preparation for natural phenomena

Measures against volcanoes, tornadoes, forest fires.

Measures against forest fires (creation of firebreak)

Measures against fire in buildings

Reinforcement of functions for fire prevention, fire detection and fire extinguishing and measures to mitigate effects.

Measures against flooding in buildings, etc.

Prevention of flooding into important equipment.

Efforts for Early Restart and Safe and Stable Operation of Shika Nuclear Power Station

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