Skip to main content

View Diary: Burners without Borders: Fukushima #53 (183 comments)

Comment Preferences

  •  1 yr. radiation projections for outside plant (7+ / 0-)

    The story mentions that NISA plans to release updated maps twice a month.

    High levels of radiation in areas near nuclear plant foreseen for a year - The Mainichi Daily News

    ...
    According to the contamination map unveiled by the Ministry of Education, Culture, Sports, Science and Technology, a cumulative dose of radiation for the year to March 11, 2012 is expected to reach 235.4 millisieverts in Akogi Kunugidaira in Namie, Fukushima Prefecture, 24 kilometers northwest of the Fukushima No. 1 Nuclear Power Plant.

    The cities of Fukushima and Minami-Soma are also predicted to receive more than 10 millisieverts of radiation, 10 times the dose of artificial radiation an ordinary person is allowed to be exposed to a year.

    Based on data collected from 2,138 monitoring points, the ministry calculated total cumulative doses of radiation between March 12 and April 21 and added them up to expected cumulative doses of radiation for the period thereafter to March 11, 2012. Expected radiation exposure was based on the assumption that the nuclear power plant continues to spew the same level of radiation as that detected on April 22. The ministry assumed that people in each monitoring point spend eight hours outdoors and 16 hours inside wooden houses a day. The ministry assumes the level of exposure to radiation in wooden houses is 40 percent lower than outdoors.

    As a result, higher levels of radiation were predicted in areas northwest of the nuclear power plant. On April 11, the government designated areas outside a 20-kilometer radius of the nuclear plant that were expected to receive 20 millisievers per year as "planned evacuation zones." Ten locations in the zones including Namie, Iitate and Kawamata were predicted to receive more than 20 millisieverts of radiation. Ryozen in Date, 48 kilometers northwest of the nuclear plant, was predicted to receive 21.2 millisieverts per year.

    (Mainichi Japan) April 27, 2011

Subscribe or Donate to support Daily Kos.

Click here for the mobile view of the site