[ RadSafe ] Japanese Reactors

Fri Mar 11 21:16:31 CST 2011

Based on two of the web sites previously posted, it appears that the reading "near the gate" was 7 micro-R/hr normal, then increased as high as 59 micro-R/hr.  The description of 1000 times higher apparently referred to readings inside the plant.
http://ansnuclearcafe.org/
http://www.nisa.meti.go.jp/english/index.html

Dennis Quinn
dqdx at aol.com

-----Original Message-----
From: radsafe-bounces at health.phys.iit.edu [mailto:radsafe-bounces at health.phys.iit.edu] On Behalf Of Roger Helbig
Sent: Friday, March 11, 2011 8:00 PM
To: 'The International Radiation Protection (Health Physics) Mailing List'
Subject: Re: [ RadSafe ] Japanese Reactors

Does anyone know what normal is - vs 8 or 1000 times normal - these numbers sound ominous, but are they really significant?

Roger

-----Original Message-----
From: radsafe-bounces at health.phys.iit.edu [mailto:radsafe-bounces at health.phys.iit.edu] On Behalf Of radbloom at comcast.net
Sent: Friday, March 11, 2011 4:49 PM
To: The International Radiation Protection (Health Physics) Mailing List
Subject: Re: [ RadSafe ] Japanese Reactors

Rick, 

It looks like there is some information here: 

http://ansnuclearcafe.org/ 

Associated Press State of Emergency declared for five reactors 2011 03 11 1815 EST 

TOKYO — Japan declared states of emergency for five nuclear reactors at two power plants after the units lost cooling ability in the aftermath of Friday’s powerful earthquake. Thousands of residents were evacuated as workers struggled to get the reactors under control to prevent meltdowns. 

A single reactor in northeastern Japan had been the focus of much of the concern in the initial hours after the 8.9 magnitude quake, but the government declared new states of emergency at four other reactors in the area Saturday morning. 

The earthquake knocked out power at the Fukushima Daiichi plant, and because a backup generator failed, the cooling system was unable to supply water to cool the 460-megawatt No. 1 reactor. Although a backup cooling system is being used, Japan’s nuclear safety agency said pressure inside the reactor had risen to 1.5 times the level considered normal. 

Authorities said radiation levels had jumped 1,000 times normal inside Unit 1 and were measured at eight times normal outside the plant. They expanded an earlier evacuation zone more than threefold, from 3 to 10 kilometers (2 miles to 6.2 miles). Some 3,000 people had been urged to leave their homes in the first announcement. 

The utility, which also operates reactors at the nearby Fukushima Daini plant, later confirmed that cooling ability had been lost at three of four reactors there, as well as a second Fukushima Daiichi unit. The government promptly declared a state of emergency there as well. 

<snip> 

Cindy Bloom 

----- Original Message ----- 
From: "Rick Strickert" <rstrickert at signaturescience.com> 
To: "The International Radiation Protection (Health Physics) Mailing List" <radsafe at health.phys.iit.edu> 
Sent: Friday, March 11, 2011 7:03:16 PM 
Subject: Re: [ RadSafe ] Japanese Reactors 

Is there some religious oath journalists take in which they swear never to identify units when they report any radiation exposure/dose/rate?!? 

Rick Strickert 
Austin, TX 

________________________________________ 
From: radsafe-bounces at health.phys.iit.edu [radsafe-bounces at health.phys.iit.edu] On Behalf Of WesVanPelt at verizon.net [WesVanPelt at verizon.net] 
Sent: Friday, March 11, 2011 5:34 PM 
To: 'The International Radiation Protection (Health Physics) Mailing    List' 
Subject: [ RadSafe ] Japanese Reactors 

Unit 1 is in serious trouble if you believe Kyodo News! See text below. 
Control Room has radiation levels 1,000 times normal!! And radiation levels 
are rising at the main gate of the plant. 

Best regards,  Wes 
Wesley R. Van Pelt, PhD, CIH, CHP 
Wesley R. Van Pelt Associates, Inc. 

-----Radioactive substances could already have leaked at the Fukushima No. 1 
nuclear power plant after a magnitude 8.8 earthquake hit northern Japan, the 
operator Tokyo Electric Power Co. said Saturday. 

The amount of radiation reached around 1,000 times the normal level in the 
control room of the No. 1 reactor of the plant, the Nuclear and Industrial 
Safety Agency also said. The discovery suggests radioactive steam could 
spread around the facility. 

The agency also said radiation has been more than eight times the normal 
level at a monitoring post near the main gate of the plant. 

The authorities expanded the evacuation area for residents in the vicinity 
of the plant from a 3-kilometer radius to 10 km on the orders of Prime 
Minister Naoto Kan, who plans to visit the facility later Saturday. 

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