Radiation measurements Saturday March 26 reported by IAEA
330 m east of the discharge points of Units 1 – 4.
74 000 Bq/liter of iodine-131
12 000 Bq/liter of cesium-137
12 000 Bq/liter of cesium-134
Radiation measurements Sunday March 27 reported by IAEA
330 m east of the discharge points of Units 1 – 4.
11 000 Bq/liter of iodine-131
1 900 Bq/liter of cesium-137
NHK reports that MEXT has been collecting seawater samples at 4 locations 30 kilometers off the coast of Fukushima Prefecture since March 23rd. The latest data are for March 27.
1.5 to 3.9 Bq/liter of cesium-137 – Sunday March 27
5.4 to 15 Bq/liter of iodine-131 – Sunday March 27
The amounts represent 1,000 to 2,600 times the levels measured in the same area 2 years ago.
But the current levels are only one-fifth to one-tenth of those detected on March 23rd.
What does this mean
For comparison the radioactivity of coffee is about 1000 Bq/kg. The long term risk is that some organisms can concentrate these radioactive substances, especially cesium-137 which has a half life of about 30 years.

Be the first to comment