Tag "Strontium90"

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Environmental contamination Sea contamination

Tepco “30,000,000,000,000 Bq of Cs-137 and Sr-90 leaked to the Pacific” / 30,000,000,000 Bq still leaking per day

On 8/21/2013, Tepco announced 30,000,000,000,000 Bq of Cesium-137 and Strontium-90 have leaked to the sea since May of 2011. This is over 100 times much as their management standard volume

Contaminated water crisis

Tritium density in seawater spiked triple times higher in 5 days, “2,200,000 Bq/m3”

According to Tepco, Tritium density increased to be three times higher within 5 days. Having measured extremely high level of Tritium from groundwater, they are analyzing seawater. From the sample


56,000 Bq/m3 of Strontium-90 measured from sub-drain of reactor2

According to Tepco, high level of Strontium-90 is still measured in sub-drain of reactor2 and 3. The data of reactor1 is not published for some reason. The sampling date was


[Strontium90] 490 Bq/Kg of Strontium-90 measured from the soil of Fukushima nuclear plant

According to Tepco, high level of Strontium-90 was measured from the dry soil of Fukushima nuclear plant. The highest reading was 490 Bq/Kg from 500m in North of reactor1&2 stacks.


1.8 Bq/Kg of Strontium-90 measured from rainbow smelt in Minamisoma city Fukushima

↑ Rainbow smelt (This is not the specific sample.) According to MOE, (Ministry of the Environment), 1.8 Bq/Kg of Strontium-90 was measured from infant rainbow smelt. From this sample, 82

Domestic and global Environment

400 Bq/Kg of Sr-90 from dry soil in 500m from reactor1 and 2, sampling date was 9 months ago

According to Tepco, 400 Bq/Kg of Sr-90 was measured from dry soil in SSW 500m from reactor1 and 2 stacks. The sampling date was 6/11/2012. There is no explanation why

Sea contamination

Strontium-90 detected from near the water discharge channel of reactor1~6

According to Tepco’s “Nuclides Analysis Result of Radioactive Materials in the Seawater” published on 1/23/2013, Strontium-90 was detected from 30m of the discharge channel of reactor5 and 6 and 330m


1200 Bq/Kg of Strontium 90 ,7000 times more than before 311

  Tepco announced they measured 1200 Bq/ Kg of Strontium 90 from the sea ground soil at the south side of the intake of reactor 1~4 on 1/12/2012. They also