NE Japan Earthquake Day 28: Tokyo Power Plans to Secure Summer Power Supply at 50 Million Kilowatt Hours to Avoid Rolling Blackouts; Geological Assessment Forthcoming on the Earthquake Which Wasn’t Predicted in Time

Tokyo Power Plans to Secure Summer Power Supply at 50 Million Kilowatt Hours to Avoid Rolling Blackouts
Yomiuri Shimbun: 東電、今夏5千万kw確保…計画停電回避目指す
April 7, 2011

Tokyo Power plans to restore its power supply to almost 50 million kilowatt hours per day this summer, about 3.5 million kWh above its previous target, it declared on the 7th.

The company expects demand to peak at 55 million kWh this summer. It thinks its supply increase coupled with demand-oriented government usage restrictions and home and business power-saving measures will make rolling blackouts unnecessary.

The Kashima Coal Cooperative in Ibaraki is unexpectedly going back online. This month, its four electrical generators are being reactivated one by one. This coal power, a joint venture of Tokyo Power and Sumitomo Metal Industries, can supply at most 1.4 million kWh.

The Thai government is lending two Mitsubishi Heavy Industries-produced gas turbine generators free of cost, and other generators are quickly being brought in from elsewhere in Japan and from abroad which would increase supply by over 1 million kWh total.

Besides that, the company will buy surplus electricity from manufacturers of home electrical generators and will put other existing coal power plants back online, such that in the peak demand period around the end of July, supply will rise from the expected 46.5m kWh to almost 50m kWh.

Geological Assessment Forthcoming on the Earthquake Which Wasn’t Predicted in Time
Yomiuri Shimbun: 間に合わなかった東北巨大地震の予測…公表目前
April 7, 2011

The National Headquarters for Earthquake Research Promotion said that new objects of research have been added to the long-term assessment of the massive earthquake offshore of Miyagi and Fukushima which it had planned to release this month.

After the possibility of the biggest earthquake in 1150 years and an accompanying giant tsunami became clear to the research center, it held an informational session in Miyagi in February, and it had another planned in Fukushima in mid-March. The earthquake itself happened first, and researchers are now saying with regret, “if only we’d communicated earlier the possibility of an earthquake larger than anything we’d ever imagined…”

During the 2005-9 academic years, the headquarters concentrated its research on an earthquake offshore of Miyagi. Ancient documents had spoken of the 869 (A.D) Sanriku Earthquake; geological surveys and computer models showed it had a 200-kilometer source area offshore of Miyagi and Fukushima, 100 km of which deviated from the Sanriku fault line, and the tsunami came 3-4 kilometers onshore. (The tsunami following this year’s Great Eastern Earthquake came 5 kilometers onshore.) Surveys and tests found traces of the 869 Sanriku tsunami in ground strata from 400-500 years before and after the earthquake.

Researchers had assumed until now that the southern trench of the Sanriku fault hadn’t shaken, but test results show that there was movement in three new areas in addition to Fukushima. The Headquarters had planned to release their assessment this month, but because the Magnitude 9 quake had an larger source area than expected, including even Ibaraki Prefecture, fundamental revisions are being made to the report.







(2011年4月7日14時39分 読売新聞)






(2011年4月6日16時13分 読売新聞)

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