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In the previous thread, we discussed where TEPCO could put the contaminated water found in the turbine buildings. Here is what they are actually doing, for reactors No. 1 to 3:

TEPCO : Press Release | Status of TEPCO's Facilities and its services after the Tohoku-Taiheiyou-Oki Earthquake (as of 10:00AM)

- At approximately 5:00 pm, March 24th, draining water from underground
  floor of turbine buildings into a condenser was started and it was
  paused at approximately 7:30 am, March 29th because we confirmed that
  the water level reached almost full capacity of a condenser. In order
  to move the water in the condenser into condensate reservoirs, water
  transfer from the condensate reservoirs to suppression pool's water
  surge-tanks has been conducted since around 0:00 pm, March 31st.

...

- At approximately 4:45 pm, March 29th, the water in condensate reservoirs
  was being transferred to suppression pool water surge-tanks to
  prepare for water transfer from a condenser to condensate reservoirs in
  order to drain water on the underground floor of the turbine building
  into a condenser.

...

- At approximately 5:40 pm, March 28th, the water in condensate reservoirs
  was being transferred to suppression pool water surge-tanks to prepare
  for water transfer from a condenser to condensate reservoirs in order to
  drain water on the underground floor of the turbine building into a
  condenser. We finished the transfer work at approximately 8:40 am, March
  31st.

As I understand it:

  • The condenser and condensate reservoirs are part of the plant's primary circuit: steam that passed the turbines are condensed into water with the help of cooling circuits circling seawater, and that is pumped back into the reactor.
  • The suppression pool is the torus under the reactor, which was to serve as part of an emergency short-circuit of the primary circuit: overpressure in the core can be reduced by pumping the steam into this pool to condense.
  • So what they are now doing: they want to pump the water on the floor of the turbine building into a condenser chamber, for that they are pumping the water out of the condenser chamber into the condensate reservoirs (still inside the turbine building), for that they are pumping the water in the reservoirs into tanks connected to the torus underneath the reactor.

In effect, they seem to be trying to contain all contaminated water in pipes and reservoirs meant to contain such water. Then again, there is no control over outflows like that from the spray on the spent fuel pools.

*Lunatic*, n.
One whose delusions are out of fashion.
by DoDo on Fri Apr 1st, 2011 at 03:42:54 AM EST

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