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Japan: IAEA Briefing April 8th

 

 


# 5477

 

 

In the wake of a 7.1 magnitude aftershock yesterday, the IAEA has issued a new briefing that includes status updates on several other nuclear reactors in northern Japan.

 

Yesterday’s temblor was the largest aftershock yet since the March 11th 9.0 quake that generated a massive tsunami, devastated northern Japan, and severely damaged several nuclear reactors.

 

The IAEA continues to categorize the status of these damaged reactors by stating: 

 

Overall, the situation at the Fukushima Daiichi plant remains very serious although there are early signs of recovery in some functions such as electrical power and instrumentation.

 

I’ve only reproduced the opening section which pertains to this latest aftershock’s effects on Japan’s nuclear facilities. 

 

Follow the link to read this update in its entirety.

 

 

IAEA Briefing on Fukushima Nuclear Accident (8 April 2011, 15:00 UTC)

by International Atomic Energy Agency (IAEA) on Friday, April 8, 2011 at 10:57am

1.      Earthquake of 7th April

The IAEA confirms that an earthquake occurred in Japan at 14:32 UTC 7th April. The IAEA International Seismic Safety Centre has rated it as a 7.1 magnitude, revised from an initial 7.4 magnitude.

The epicenter of the earthquake was 20 km from the Onagawa nuclear power plant and approximately 120 km from the Fukushima Daiichi and Daini nuclear power plants.

 

The IAEA has been in contact with NISA and can confirm the status of the following nuclear facilities:

Fukushima Daiichi NPP

No changes have been observed at the on-site radiation monitoring posts. The injection of water into the reactor pressure vessels of Units 1, 2 and 3 was not interrupted.

Fukushima Daini NPP

No changes have been observed of the readings at the on-site radiation monitoring posts.

Onagawa NPP

All reactors have been in cold shutdown since the 11th March earthquake.

 

Two out of the three lines supplying off-site power to the site were lost following the 7th April earthquake. Off-site power continues to be supplied through the third line.

 

Cooling of the spent fuel pool was temporarily lost, but has subsequently been restored.

 

No change has been observed in the readings from the on-site radiation monitoring post. The status of the plant is currently being checked.

Tokai Daini NPP

Tokai Daini nuclear power plant remains in cold shutdown since the 11th March earthquake. No abnormality has been observed.

Higashidori NPP

The Higashidori NPP was shut down and in a maintenance outage at the time of the 7th April earthquake. Off-site power was lost temporarily. Emergency power supply to the site operated as expected until off-site power was restored. All the fuel had been removed from the reactor core and stored in the spent fuel pool. Cooling of the spent fuel pool is operational.

Tomari NPP (in Hokkaido)

At the time of the 7th April earthquake Tomari Unit 1 and Unit 2 were in operation. Following the 7th April earthquake, the Hokkaido Electric Power Company reduced the generating power to 90% of capacity.

Rokkasho Reprocessing Plant

Rokkasho Reprocessing Plant and uranium enrichment facility lost off-site power. Emergency power supply to the site is operating.

(Continue . . . )

 

 

 

Seismologists warn that additional strong aftershocks are still possible over the next few weeks and months.

Related Post:

Earthquake
Fukushima

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