[ RadSafe ] Japanese Reactors

[Jeff Terry]

TEPCO reports increasing signature of radioactive iodine:
http://www.tepco.co.jp/en/press/corp-com/release/11031211-e.html

	

Press Release (Mar 12,2011)
Impact to TEPCO's Facilities due to Miyagiken-Oki Earthquake (as of 7 AM)

Below is major impact to TEPCO's facilities due to the Miyagiken-Oki 
Earthquake that occurred yesterday at 2:46PM.
*new items are underlined

[Nuclear Power Station]
Fukushima Daiichi Nuclear Power Station:
  Units 1 to 3: shutdown due to earthquake
  Units 4 to 6: outage due to regular inspection
* Evacuation has been instructed by the national government to the local 
residents within 10 km radius of Fukushima Daiichi Nuclear Power Station 
and Fukushima Daini Nuclear Power Station.
* Measurement of radioactive material (Iodine, etc.) by monitoring car 
indicates increasing value compared to normal level. One of the 
monitoring posts is also indicating higher than normal level. We will 
continue monitoring discharge of radioactive material from exhaust stack 
and discharge canal, etc.


Jeff


Jeff Terry
Asst. Professor of Physics
Life Science Bldg Rm 166
Illinois Institute of Technology
3101 S. Dearborn St. 
Chicago IL 60616
630-252-9708
terryj at iit.edu




On Mar 11, 2011, at 9:05 PM, Jeff Terry wrote:

> Hi All, 
> 
> I climbed out of the bomb shelter to check out CNN.
> 
> Prof. Richard Lester of MIT just reported on CNN that I-131 has been detected at one of the Fukushima sites. 
> I cannot find another report confirming this.  Has anyone else seen this reported?
> 
> This would indicate fuel failure. 
> 
> Also, the ANS Nuclear Cafe is linking to public press articles at:
> http://ansnuclearcafe.org/
> 
> There has been one seriously injured worker reported at the Site:
> From the TEPCO site: http://www.tepco.co.jp/en/press/corp-com/release/index-e.html
> 
> Unit 1 (shut down at 2:48PM on March 11th)
> - Reactor is shut down and reactor water level is stable.
> - Offsite power is available.
> - Control rods are fully inserted (reactor is in subcritical status)
> - Status of main steam isolation valve: closed
> - Injection of water into the reactor had been done by the Reactor Core 
>  Isolation Cooling System, but at 3:48AM, injection by Make-up Water 
>  Condensate System begun.
> - At 6:08PM, we announced the increase in reactor containment vessel pressure, 
>  assumed to be due to leakage of reactor coolant.  However, we do not believe 
>  there is leakage of reactor coolant in the containment vessel at this moment.
> 
> Unit 2 (shut down at 2:48PM on March 11th)
> - Reactor is shut down and reactor water level is stable.
> - Offsite power is available.
> - Control rods are fully inserted (reactor is in subcritical status)
> - Status of main steam isolation valve: closed
> - Injection of water into the reactor had been done by the Reactor Core 
>  Isolation Cooling System, but at 4:50AM, injection by Make-up Water 
>  Condensate System begun.
> - We do not believe there is leakage of reactor coolant in the containment 
>  vessel.
> 
> Unit 3 (shut down at 2:48PM on March 11th)
> - Reactor is shut down and reactor water level is stable.
> - Offsite power is available.
> - Control rods are fully inserted (reactor is in subcritical status)
> - Status of main steam isolation valve: closed
> - Reactor Core Isolation Cooling System is turned off.  Currently, injection 
>  of water into the reactor is done by Make-up Water Condensate System.
> - We do not believe there is leakage of reactor coolant in the containment 
>  vessel.
> 
> Unit 4 (shut down at 2:48PM on March 11th)
> - Reactor is shut down and reactor water level is stable.
> - Offsite power is available.
> - Control rods are fully inserted (reactor is in subcritical status)
> - Status of main steam isolation valve: closed
> - Reactor Core Isolation Cooling System is turned off.  Currently, injection 
>  of water into the reactor is done by Make-up Water Condensate System.
> - We do not believe there is leakage of reactor coolant in the containment 
>  vessel.
> 
> Indication from monitoring posts installed at the site boundary did not show 
> any difference from ordinary level.
> No radiation impact to the external environment has been confirmed. We will 
> continue to monitor in detail the possibility of radioactive material being 
> discharged from exhaust stack or discharge canal.
> There is no missing person within the power station.
> We are presently checking on the site situation of each plant while keeping 
> the situation of aftershock and Tsunami in mind.
> A seriously injured worker is still trapped in the crane operating console 
> of the exhaust stack and his breathing and pulse cannot be confirmed.
> A worker was lightly injured spraining his left ankle and cutting both knees 
> when he fell while walking at the site. The worker is conscious.
> 
> 
> Jeff
> 
> 
> Jeff Terry
> Asst. Professor of Physics
> Life Science Bldg Rm 166
> Illinois Institute of Technology
> 3101 S. Dearborn St. 
> Chicago IL 60616
> 630-252-9708
> terryj at iit.edu
> 
> 
> 
> 
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