nuclear-news

The News That Matters about the Nuclear Industry Fukushima Chernobyl Mayak Three Mile Island Atomic Testing Radiation Isotope

Fukushima I Nuke Plant: Sediment Sample Collected from Flooded Torus Room of Reactor 1

Uh… They put the sediment sample in a plastic bottle?

According to TEPCO, the plastic bottle is emitting 4 millisieverts/hour radiation with the sediment in it.

From TEPCO’s Photos and Videos Library, 2/22/2013:

 

Workers in full gear collecting samples through the hole on the first floor of the Reactor 1 building, where the air radiation dose ranges from 2 to 10 millisieverts/hour. It took 20 workers 2 hours and 35 minutes to complete the task, for which they received 1.46 millisievert (maximum) of radiation exposure.

http://ex-skf.blogspot.co.uk/2013/02/fukushima-i-nuke-plant-sediment-sample.html

From the comments:

A polyethylene bottle is an appropriate container for reducing α, β, and neutron emission. E.g., from “Neutron Interactions with Matter”, P. Rinard:

“Figure 12.8 shows that a cylinder of polyethylene is more effective in preventing the transmission of neutrons than a cylinder of heavy metal. A neutron loses most of its energy by colliding with the light elements in polyethylene and then the mean-free-path length becomes small as the cross sections increase.”

http://www.fas.org/sgp/othergov/doe/lanl/lib-www/la-pubs/00326407.pdf

February 23, 2013 - Posted by | Uncategorized

1 Comment »

  1. That seems like a steaming pile of horse manure!
    They use LLDPE because it is cheap and readily available, as is duct tape, baby diapers, etc.
    Their clothing appears to have been furnished by Home Depot!

    (whispering) TEPCO, nobody in their right minds believes any thing you say, nor has for a long time now.

    TechDud's avatar Comment by TechDud | February 23, 2013 | Reply


Leave a comment

This site uses Akismet to reduce spam. Learn how your comment data is processed.

« Previous | Next »