Study: Up to 900 trillion becquerels of strontium-90 into ocean from Fukushima plant — “Direct discharges of cooling water”

Published: March 23rd, 2013 at 1:35 pm ET
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Title: 90Sr and 89Sr in seawater off Japan as a consequence of the Fukushima Dai-ichi nuclear accident
Authors: N. Casacuberta, P. Masqu´e, J. Garcia-Orellana, R. Garcia-Tenorio, and K. O. Buesseler
Published: February 5, 2013

[...] Liquid discharges of 90Sr to the ocean were estimated, resulting in an inventory of 53±1 TBq of 90Sr in the inshore study area in June 2011 and total releases of 90Sr ranging from 90 to 900 TBq, depending upon the reported estimates of 137Cs releases that are considered. [...]

Results of the samples analyzed here evidenced a much stronger influence of direct discharges of cooling water into the sea and the oceanic background concentration, rather than atmospheric deposition. Direct discharges have been quantified on the basis of the estimates of 137Cs discharges and the 90Sr/137Cs ratio, resulting in a range between 90 and 900 TBq of 90Sr.

See also: Study: Up to 47 quadrillion becquerels of cesium-137 released into Pacific from Fukushima -- Nearly 50 times original Tepco estimate

Published: March 23rd, 2013 at 1:35 pm ET
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