Power Failure at Nagoya Works

1. Circumstances

On Thursday， June 10， around 11:20 a.m.， sharp declines in frequency occurring in the power system connecting Nagoya Works of Nippon Steel Corporation and Chubu Electric Power Co.， Inc. resulted in the breaking of power connection between the two companies， followed by the stoppage of the generating facilities on the premises of the Works for some reason， thus causing emergency stoppage of nearly all of the production facilities. Our studies have revealed that immediately before the breaking， abnormal， never-before anticipated levels of declines in frequencies occurred.

At the same time as the above occurrence， power failures occurred over a wide-area centering around the City of Kariya within the area of control of Chubu Electric Power. According to Chubu， a periodical inspection of control equipment for the transmission systems was in progress at the East Nagoya Transforming Station (in the City of Toyoake， Nagoya Prefecture) of Chubu.

At present， with the cooperation of Chubu， we are looking into causes.

At the time of the emergency stoppage of facilities， an employee of a related company working at the coke plant suffered a burn. Now hospitalized for treatment， he is recovering well.

2. State of Operations of Facilities and Effects on Production

Facilities are beginning to be put back into operation， one by one. But， considering the impact of the sudden stoppage， we are inspecting and checking them carefully prior to restarting， making additional repairs where needed.

● Blast furnace: Restart on 12th.
● Coke batteries: Restart on 10th.
● Steelmaking: Restart on 13th.
● Hot rolling: Start-up scheduled for 16th.
● Cold rolling & galvanizing: Restart on 13th.
● Tinning: Restart on 12th.
● Plate: Start-up scheduled for 16th.
● Pipe: Restart on 11th.

Production will probably have to suffer a decrease of something like 100，000 tons. The supply situation being very tight nowadays， we are exerting our utmost to make an early recovery and not to cause inconvenience to our customers， but as things stand now， we may be compelled to ask for a certain delivery-term adjustment.
We would be most grateful if customers would very kindly understand the above circumstances.
+81-3-3275-5021/5022/5023