TEPCO

Responding to
New Regulatory Requirements Compliance Reviews
at Units 6 and 7 of
the Kashiwazaki-Kariwa Nuclear Power Station

What are the New Regulatory Requirements?

New Regulatory Requirements were established by the government in July 2013 to determine the advisability of building and operating nuclear facilities.
Based on the lessons learned from the accident at Fukushima Daiichi Nuclear Power Station and knowledge gathered from within Japan and overseas, strengthened measures were adopted against earthquakes and tsunamis. New measures were also added for other natural disasters, major accidents, and intentional plane crashes as terrorist attacks.
As a result, they require a far higher level of safety measures than the former regulatory requirements.

Main review items for Units 6 and 7 of
the Kashiwazaki-Kariwa Nuclear Power Station

Each item is reviewed by the Nuclear Regulation Authority to check whether the nuclear facilities comply with the New Regulatory Requirements.
  • Response to terrorist attacks
    Response to intentional plane crashes*1
    Major accident response facilities(response to major accidents)
    Probabilistic risk assessments
    Selecting accident sequences
    Effectiveness assessments(Reactor core damage prevention measures)
    Effectiveness assessments(Primary containment vessel damage prevention measures)
    Effectiveness assessments(Fuel damage prevention measures in the spent fuel storage pools)
    Effectiveness assessments(Fuel damage prevention measures during reactor shutdowns)
    Analysis codes
    Reactor control room
    Emergency response center
    Access routes
    Measures for hydrogen generation in the reactor buildings
    Filter vents
    Technical competence for major accidents
  • Design basis target facilities(prevention of major accidents)
    Impact assessments of external fires and countermeasures
    Selecting target volcanoes
    Measures for volcanoes
    Impact assessments of tornadoes and countermeasures
    Impact assessments of other natural phenomena and countermeasures
    Fire protection measures
    Measures for internal flooding
    Prevention of erroneous operations
    Evacuation passages for safety
    Single failure of static equipment
    Sharing of safety systems
    Countermeasure facilities for station blackouts
    Fuel assemblies handling and storage facilities
    Reactor coolant pressure boundaries*2
    Protection circuits for safety
    Monitoring and measuring devices
    Power-supply facilities for safety
    Telecommunication equipment
  • Response to earthquakes and tsunamis
    Fault activities around the power station
    Fault activities within the power station
    Seismic motion
    Seismic-resistant design
    Stability of ground and slope
    Tsunami
    Tsunami-resistant design

*1 Separate reviews will be conducted for specific major accident response facilities.
*2 The boundaries define the areas where equipment such as pipes reaches the same pressure level as pressure vessels during normal operations.

TEPCO

Responding to
New Regulatory Requirements
Compliance Reviews
at Units 6 and 7 of
the Kashiwazaki-Kariwa
Nuclear Power Station

What are the New Regulatory Requirements?

New Regulatory Requirements were established by the government in July 2013 to determine the advisability of building and operating nuclear facilities.
Based on the lessons learned from the accident at Fukushima Daiichi Nuclear Power Station and knowledge gathered from within Japan and overseas, strengthened measures were adopted against earthquakes and tsunamis. New measures were also added for other natural disasters, major accidents, and intentional plane crashes as terrorist attacks.
As a result, they require a far higher level of safety measures than the former regulatory requirements.

Former regulatory requirements

Considerations for natural phenomena
Considerations for fires
Reliability of power supply
Performance of other facilities
Seismic-resistant and tsunami-resistant performance

New Regulatory Requirements

New Response to intentional aircraft collisions

Response to terrorist attacks

New Measures to control spread of radioactive materials
Measures to prevent damage to primary containment vessels
Measures to prevent damage to reactor cores (assuming failure of multiple equipment)

Major accident response facilities(response to major accidents)

Strengthened or new Considerations for internal flooding (new)
Considerations for natural phenomena(new for volcanoes,tornadoes,forest fires)
Considerations for fires
Reliability of power supply
Performance of other facilities

Design basis target facilities(prevention of major accidents)

Strengthened Seismic-resistant and tsunami-resistant performance

Response to earthquakes and tsunamis

Main review items for Units 6 and 7 of the Kashiwazaki-Kariwa Nuclear Power Station

Each item is reviewed by Nuclear Regulation Authority to check if the nuclear facilities are complied with the New Regulatory Requirements.

Response to terrorist attacks
Response to intentional plane crashes*1
Major accident response facilities(response to major accidents)
Probabilistic risk assessments
Selecting accident sequences
Effectiveness assessments(Reactor core damage prevention measures)
Effectiveness assessments(Primary containment vessel damage prevention measures)
Effectiveness assessments(Fuel damage prevention measures in the spent fuel storage pools)
Effectiveness assessments(Fuel damage prevention measures during reactor shutdowns)
Analysis codes
Reactor control room
Emergency response center
Access routes
Measures for hydrogen generation in the reactor buildings
Filter vents
Technical competence for major accidents
Design basis target facilities(prevention of major accidents)
Impact assessments of external fires and countermeasures
Selecting target volcanoes
Measures for volcanoes
Impact assessments of tornadoes and countermeasures
Impact assessments of other natural phenomena and countermeasures
Fire protection measures
Measures for internal flooding
Prevention of erroneous operations
Evacuation passages for safety
Single failure of static equipment
Sharing of safety systems
Countermeasure facilities for station blackouts
Fuel assemblies handling and storage facilities
Reactor coolant pressure boundaries*2
Protection circuits for safety
Monitoring and measuring devices
Power-supply facilities for safety
Telecommunication equipment
Response to earthquakes and tsunamis
Fault activities around the power station
Fault activities within the power station
Seismic motion
Seismic-resistant design
Stability of ground and slope
Tsunami
Tsunami-resistant design

*1 Separate reviews will be conducted for specific major accident response facilities.
*2 The boundaries define the areas where equipment such as pipes reaches the same pressure level as pressure vessels during normal operations.