JAEA-Testing-2011-007.pdf:46.74MB - 日本原子力研究開発機構

JAEA-Testing 2011-007
JAEA-Testing 2011-007
During the filtering using a sheet, turbid liquid containing high concentration of
radioactive materials is produced at first as is seen in the photo. Change the
receiving tray when the filtrated water has become clear. Apply filtration to the
water produced at first again.
Conduct the filtration using several filters with a sheet in parallel.
Change a tray from the initially used one to a new empty one to collect
clear filtrated water
Turbid liquid produced just
after starting the filtration
Jute sacks may also be used for the filtration instead of the sheet. The jute sack
that is coarser than the sheet has an advantage of short filtering time, but also
has a disadvantage of passing fine precipitate through.
Scoop precipitate left in the bottom of the 1 ton plastic tank as much as possible
using ladles and put it into filters with a filter cloth. Wash inner wall of the tank
by adding small quantity of the tap water and rub away the precipitate on the
wall. Tumble the tank gently to scoop the residual precipitate as much as possible
using a dustpan or other tools, and feed it into the filter. Finally, wipe the inner
wall of the tank with waste cloths.
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Filtrated clear water