Tuesday, June 21, 2011

#Fukushima I Nuke Plant: Reactor 2 Radiation at 430 Millisieverts/Hr

TEPCO sent in 7 of its employees and 3 "affiliate" company employees to the Reactor 2 reactor building on June 21 to take some measurements in preparation for the future work.

The highest radiation measured was 430 millisieverts/hour on the way to the 1st basement floor. The radiation on the 2nd floor seems generally higher than the 1st floor.

The overall radiation level is pretty high, judging from the amount of time they spent inside the building and the amount of external radiation they received. They spent 10 minutes measuring over 30 locations, and received between 2.16 and 5.52 millisieverts.

If the Reactors 1 and 3 are the examples, they must have taken the video, more photographs, and gamma-ray photographs. Why they can't disclose all of them at once, I don't know.

TEPCO's handout for the press on June 22, 2011:

Note the water in the photos of the 1st floor. The color of the water is rust red. According to Asahi Shinbun, the depth of the water is 6.1 meters from the basement floor, about half way to the 1st floor.

The stairs that they measured 430 millisieverts/hour radiation is in the northwest corner (upper left) of the 1st floor. TEPCO says that's no problem, because the work will be mostly done on the 1st floor.

Well, with the Suppression Chamber in the basement of the Reactor 2 broken, I don't think TEPCO want to send in carbon-based workers yet.

They will be installing the pressure gauge on the Reactor Pressure Vessel of the Reactor 2. When they did the same in the Reactor 1, they found out that there was no pressure in the RPV, and there was no water.


Anonymous said...

Robbie001 sez:

You could kill 30 Fukushima workers and nobody would know. It also seems there are about 56 workers who are too sick to test (hummm.... they must have the nuclear flu).

"The Mainichi Daily: 30 Fukushima nuclear power plant subcontractors have no names, records, or known wherabouts"

"The other 125 had not undergone tests for internal radiation exposure as of June 20. TEPCO has asked cooperating companies to have 69 of these 125 workers tested. The remaining 56 were either about to undergo tests or could not undergo tests due to illness."


Anonymous said...

Just to thank you so much for all the information in this blog in my country Spain there is nothing about this nuclear accident in the news ¡¡


Anonymous said...

The latest round of tests with the Areva/Kurion water decontamination system are failing epically -


La terra non ha uscite di emergenza. said...

Les 100 jours de Fukushima : 621 millions de Curie d’effluents aériens.

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