UPDATE: The test below sampled the top 1 centimeter of the soil, and the top 1 to 2 centimeters of the soil and dead leaves mixture. [...] To derive “becquerel/square meter” from “becquerel/kg”, you multiply “becquerel/kg” number by 65, but that only applies if the soil is taken from the top 5 centimeters. -EX-SKF
Title: Tokyo is contaminated as the worst place in Chernobyl
Source: Fukushima Diary
Date: Feb 23, 2012
[...] The contamination level of Mizumoto Park turned out to be the same level of “off-limits zone” in Chernobyl.
The contamination level of the park was 23,300 Bq/Kg.
According to Nuclear Safety Commission, it is converted to be 1.4 ~1.5 million Bq/m2. [...]
at least some parts are contaminated as the worst area of Chernobyl.
Title: Impact of Chernobyl-class highest level hot spot in the park in Katsushika
Date: February 22, 2012
From soil in Katsushika, Tokyo of “Mizumotokoen”, a high concentration of radioactive cesium in excess of 20 000 becquerel per kilogram has been detected. It is known as an area “hot spots” such as the eastern metropolitan area, Katsushika and Edogawa between them, but the years have passed since an accident, still, there was a danger zone this is a shock.
Tokyo Metropolitan Assembly team will investigate the Japanese Communist Party, 21, made it clear in an interview. According to it, but the investigation is “Sha birding” “dog run” “shrubbery Parking” located in the “Mizumotokoen” Forest “Metasequoia” – in four locations, and collected soil and fallen leaves, made in Germany measuring the concentration of radioactive cesium in the instrument. To increase the accuracy, after 15 this month, that measured divided into more than once.
Appendix but it is a result, it is such consternation, it was the highest concentration of cesium soil at the entrance of “Sha bird watching”, the fallen leaves.
To convert to “square meter Bq /” a “Bq / kg” According to the Nuclear Safety Commission will take a 65. Becquerel’s value to be approximately 1.4 million to 1.5 million per square meter in a simple calculation. This corresponds to a “prohibited area of residence” when the highest level of the Chernobyl accident, residential areas has been limited, depending on the concentration of soil contamination (more than 1.48 million becquerels per square meter). Would soil or fallen leaves does not mean that all of the “Mizumotokoen” is a high concentration pollution, in the park anyone can come and go freely, close to the level where radioactive contamination “prohibited area of residence” exists become that. Contamination of the “Mizumotokoen” The survey “is found, there is a possibility these spots are also present in neighboring locations. The first place, but that 21,700 to 23,300 becquerels per kilogram, the country because it is higher than nearly three times the “8000 Becquerel” provided as a basis for processing under the direct control of the radioactive waste, the default is should be addressed as soon as possible “(official Dan metropolitan assembly Communist Party) of length WG problem of soil contamination Society of Japan Environmental says, Mr. Sakamaki Yukio. Tokyo “will be said that capital suffered (exposure). East is, of course, the dose rate space after the accident has been growing two to three times before the accident at around Metropolitan exposure of man-made radiation for the first time in the world. in urban areas many people come and go, is appropriate “have sought efforts of various organizations, including not a number can be ignored. the administrative authorities governor Ishihara Rogai is “not cast in your sleep with, such as” Bid Olympics is not, they should turn to the investigation and decontamination measures of pollution that money as soon as possible.
Read the report here
Published: February 23rd, 2012 at 2:05 pm ET
- Researcher: Tokyo sample had radioactivity levels higher than in Chernobyl exclusion zone — “There’s a very, very high level of contamination even as far south as Tokyo” (VIDEO) August 17, 2011
- NEW: High radioactivity found all around school in Ryugasaki, 30 km from Tokyo — Over a dozen hotspots detected near face level November 5, 2011
- Tokyo: Radioactive cesium detected in 53 of 56 samples — Average of 30,032 Bq/m², near Chernobyl’s “Radiation Protection Area” levels August 20, 2011
- Guardian: “Danger Reading” in Tokyo — Radiation near level that triggers an evacuation — 17 times recommended limit — More contaminated than areas in exclusion zone October 13, 2011
- Report from Tokyo: 6.5 microSv/h at Japan’s busiest train station — Equal to 57 millisieverts per year, 10 times Chernobyl evacuation levels — Near Imperial Palace (PHOTOS) February 25, 2012