May 11, 2012
Tokyo Electric Power Company

 At around 4:10 pm on January 17, 2012, part of the facilities in Fukushima Daiichi Nuclear Power Station stopped temporarily under the influence of instantaneous voltage drop of Yonomori Line No.1 and 2 due to the trouble of the switch gear at Minami Iwaki Switch Station. In keeping with the occurrence, today we received a directive document titled "Action for instantaneous voltage drop in the transmission system of Fukushima Daiichi Nuclear Power Station" from the Nuclear and Industrial Safety Agency (NISA).

(Previously announced on January 20, 2012)

Based on this directive, we hereby announce that we have reported to NISA today on the action for instantaneous voltage drop in the transmission system of Fukushima Daiichi Nuclear Power Station.

End

・Attachment
 The action for instantaneous voltage drop in the transmission system of Fukushima Daiichi Nuclear Power Station (PDF 479KB)
 
* We have provided a Japanese press release version of the instruction document received from NISA. However, at this time we have reserved the right to not provide an English version due to potential misunderstandings that may arise from an inaccurate rendering of the original Japanese text.
We may provide the English translation that NISA releases in our press releases. However, in principle we would advise you to visit the NISA website for timely and accurate information.