TEPCO has continued tested it's radioactive water treatment system at Fukushima Daiichi but discovered that the subsystems were not performing up to expectations. Per the EX-SKF blog expectations were for a 1/1,000,000 reduction in radioactive materials overall after filtering, but only a 1/18,400 decrease was actually achieved. The under-performance was noticed in the Kurion treatment subsystem, as well as the Areva (French) subsystem which both did not perform up to expectations.
The latest estimate for the amount of water pooled at the Fukushima Daiichi complex is estimated at more than 110,000 tons. Per TEPCO spokesman Junichi Matsumoto 1700 tons of water have been treated so far. The processing rate at which TEPCO wants to run the water treatment system is 50 tons/hour. Assuming 24 hour nonstop operation, 1200 tons/day of radioactive water could be theoretically processed at this rate. Approximately 500 tons a day of water is injected in to Fukushima Daiichi per the JAIF (Japan Atomic Industry Forum, Inc.) Earthquake Report for June 22, 2011.
In order to decrease the rate at which the radioactive water is building up TEPCO has reduced the amount of water being poured in to reactors 1 (-.5 tons/hr), 2 (-.5 tons/hr) and 3 (-1 tons/hour) while carefully monitoring the heat level of the reactors. The #3 reactor did experience a heat rise per TEPCO who are monitoring closely without increasing the water poured in to the reactor. The water flow in the #1 and #2 reactors will be reduced by another -.5 tons/hr.
The right sidebar of the EX-SKF blog shows the number of millimeters left to the top of the water ditches for reactors 2 and 3 if you are interested in imminent overflow.
Showing posts with label JAIF. Show all posts
Showing posts with label JAIF. Show all posts
Wednesday, June 22, 2011
6/22/2011 | TEPCO restarts Fukushima Daiichi water treatment but tests show underperformance
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Tuesday, May 31, 2011
5/31/2011 | Status of nuclear power plants in Fukushima as of 12:00, May 31st (Estimated by JAIF)
Source: JAIF (Japan Atomic Industrial Forum, Inc.)
Date: 5/31/2011 12:00
I have quoted from the latest report various excerpts for recent developments:
ENGNEWS01_1306813176P
Click here for original .pdf file
Date: 5/31/2011 12:00
I have quoted from the latest report various excerpts for recent developments:
...
1. Latest Major event and response
May 29thThe full report is available below:
09:00-19:00 Water accumulating in the basement of Unit 6 T/B was transferred to a makeshift tank.
09:00-16:00 Operation of removing rubble with remotely controlled heavy machine was conducted
09:00-13:00 Operation of spraying synthetic resin was conducted to prevent scatter of radioactive materials.
11:10-15:35 Water injection into the Unit 1 SFP through the SFP coolant clean up line was conducted.
11:33 Water injection into the No.2 reactor through the feedwater line besides the fire extinguishing line was started.
...
2. Chronology of Nuclear Power Stations
(1) Fukushima Dai-ichi NPS
...
ENGNEWS01_1306813176P
Click here for original .pdf file
Wednesday, May 25, 2011
5/25/2011 | JAIF Information on Status of Nuclear Power Plants in Fukushima
Source: JAIF (Japan Atomic Industrial Forum, Inc.)
Date: May 25, 2012 Noon
ENGNEWS01_1306300891P
View original .pdf file here
Date: May 25, 2012 Noon
ENGNEWS01_1306300891P
View original .pdf file here
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