The Japan Atomic Power Co. (JAPC) reported on Jan. 23 that it had been using erroneous data on the height of nuclear fuel rods inside the nuclear reactor at the Tokai No. 2 Power Station in Ibaraki Prefecture for at least 40 years.
The JAPC filed the report with the government's Nuclear Regulation Authority (NRA) on Jan. 23. According to the company, data indicating the height of nuclear fuel rods -- from the bottom of the reactor to the top of the rods -- was set around 5 centimeters lower than the actual height.
The Tokai No. 2 power plant in the village of Tokai is in the final phase of a safety screening by the NRA for possible reactivation. However, as the JAPC will need to check whether there is any other incorrect data in use, the screening is expected to be delayed.