We received a directive document^*1 "Maintenance of Unit 1 Alarm Typer at TEPCO Fukushima Daiichi Nuclear Power Station (Direction)" from NISA. (Previously announced on August 23, 2012)

In accordance with the direction given, we have investigated on the maintenance of Unit 1 alarm typer^*2 at Fukushima Daiichi Nuclear Power Station and submitted the results to NISA today.

End

Attachment
Maintenance of Unit 1 Alarm Typer at Fukushima Daiichi Nuclear Power Station (PDF 249KB)

*1 Directive document
"Maintenance of Unit 1 Alarm Typer at TEPCO Fukushima Daiichi Nuclear Power Station (Direction)" (August 22, 2012 NISA No.3)
*2 Alarm typer
Type of data output from the process calculator which indicates records of time of abnormality occurrence, responsive actions taken on the plant system side, etc. Basically the data is printed out and kept as record.

The aforementioned documents are available only in Japanese. We apologize for the inconvenience this may cause.