Kashiwazaki-Kariwa reactor units, Tokyo, Japan
Application: Operational reactor units.
Project scope: Independent, third-party technical audits.
Client: Tokyo Electric Power Company (TEPCO), Japan.
We assessed inspection and equipment restoration work to enable the restart of the Kashiwazaki-Kariwa reactor units.
Kashiwazaki-Kariwa is the world’s largest nuclear power station, with seven boiling water reactor units that generate nearly 8GWe, which in 2007 were safely shut down following the Niigata Chuetsu-Oki Earthquake.
To obtain permission to restart operations from Japan’s Ministry of Economy, Trade and Industry (METI), our client was required to conduct inspection and restoration work. The regulator, the Nuclear and Industrial Safety Agency (NISA) in METI, also stipulated that TEPCO performed a voluntary safety evaluation of the current inspection and restoration work.
We were entrusted to perform the technical audit services needed to assess the suitability of TEPCO’s inspection and restoration work. This work comprised of two different examinations, a review of the documentation and procedures for the inspection and restoration work at the site and technical audits to assess whether the inspection and restoration work complies with the procedures.
- provided the regulator with the confidence that the plant will be safe when it starts up
- demonstrated through independent, third-party audits that the inspection and restoration work has been conducted to the required standards.