Close

Kyodo News

March 24, 2011 6:42

  • Subscription
  • Advertisement
  • Japanese
  • Simplified Chinese
  • Traditional Chinese
  • Korean

more

Category

PAGE BACK

Not a subscriber? See options available.

Neutron beam observed 13 times at crippled Fukushima nuke plant

TOKYO, March 23, Kyodo

Tokyo Electric Power Co. said Wednesday it has observed a neutron beam, a kind of radioactive ray, 13 times on the premises of the Fukushima Daiichi nuclear plant after it was crippled by the massive March 11 quake-tsunami disaster.

TEPCO, the operator of the nuclear plant, said the neutron beam measured about 1.5 kilometers southwest of the plant's No. 1 and 2 reactors over three days from March 13 and is equivalent to 0.01 to 0.02 microsieverts per hour and that this is not a dangerous level.

The utility firm said it will measure uranium and plutonium, which could emit a neutron beam, as well.

In the 1999 criticality accident at a nuclear fuel processing plant run by JCO Co. in Tokaimura, Ibaraki Prefecture, uranium broke apart continually in nuclear fission, causing a massive amount of neutron beams.

In the latest case at the Fukushima Daiichi nuclear plant, such a criticality accident has yet to happen.

But the measured neutron beam may be evidence that uranium and plutonium leaked from the plant's nuclear reactors and spent nuclear fuels have discharged a small amount of neutron beams through nuclear fission.

==Kyodo

Category

PAGE BACK

Japan nuclear crisis (now fully accessible)
Japan quake (now fully accessible)
Opinions on nuclear crisis (now fully accessible)
Industry Brief
North Korea
Japan-China
Slideshows

Previous

  • 1

Next

Most Popular
  1. 23 Mar 2011Neutron beam observed 13 times at crippled Fukushima nuke plant
  2. 22 Mar 2011URGENT: Radiation 1,600 times normal level 20 km from Fukushima plant: IAEA
  3. 22 Mar 2011Work to restore power delayed as smoke seen at Fukushima reactors
  4. 23 Mar 2011Restoration at nuke plant disrupted, radiation fears spread to Tokyo
  5. 21 Mar 2011Status of Fukushima nuclear power plants Sunday midnight

News ReaderClose

Latest News

Category

Select :
All
None
  • Delete
  • Read It Later

Delete

Read It LaterClose
Select :
All
None
  • Delete