Category Archives: recriticality

I-131 levels fall and rise in sea outside Unit 2 – is there recriticality?

Iodine 131 has a short half-life and would normally decrease over time as a proportion of the radioactivity in seawater.   This graph shows the ratio of Cesium to I-131 goes up and down quite considerably, indicating perhaps that occasional short … Continue reading

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"Still some production of fission products" indicated by seawater sampling – IAEA

IAEA says Seawater Monitoring near the plant “indicates there is still some production of fission products” May 18 Seawater Monitoring The activity concentrations of I-131, Cs-134 and Cs-137 in seawater close to the Fukushima Daiichi plant at the screen of … Continue reading

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May 15-17 leak from Unit 3? not acknowledged

May 16-17 – Unit #3 the radiation level in the intake canal of #3 rose considerably again, but this is not yet acknowledged by TEPCO as a leak, I believe.  In fact, on Monday May 16, TEPCO reportedly said “the … Continue reading

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