#Fukushima I Nuke Plant: Toshiba's SARRY Joins the Underperformers at the Plant

Diposkan oleh Pengetahuan dan Pengalaman on Saturday, August 20, 2011

TEPCO released the result of the decontamination by Toshiba's SARRY (cesium absorption) after the start of the full run, and it was OK (according to TEPCO) but not as spectacular as the manufacturers (Toshiba, IHI, and the US's Shaw) had claimed.



SARRY achieved the decontamination factor (DF) of about 50,000, instead of 1 million the manufacturers had confidently hoped. The DF of 50,000 means that the system was able to reduce the amount of radioactive materials (in this case, cesium) to one-50,000th after the treatment.



It is still much better than Kurion, whose most recent DF is slightly less than 350 (reducing the redioactive materials to one-350th.



There goes, for now at least, the idea of just using SARRY and bypassing Kurion and AREVA in decontaminating the water. The desalination unit needs the treated water to have radioactive materials at one-100,000th of the initial contaminated water, at least. TEPCO still needs at least two of the three decontamination units.



From TEPCO's handout for the press on August 20: