Tag "water injection"
Second core damage and major radiation discharge occurred in reactor1&3 from 3/20 to 3/23/2011
On 3/6/2013, Tepco released their video record of their TV meeting from 3/16 to 4/11/2011. According to this record, 90% of the coolant water didn’t reach reactor1 in March
More than half of the injected water didn’t reach reactor3 to cause meltdown in 311
According to NHK’s original research, only 45% of the water injected by fire-engine reached reactor3, and reactor3 ended up having meltdown. NHK simulated the situation with experts to conclude
Tepco to start the reliability improvement work for feed water systems of reactor2 and 3
From 2/20/2013, Tepco will start the reliability improvement work for feed water systems of reactor2 and 3. http://www.tepco.co.jp/en/nu/fukushima-np/handouts/2013/images/handouts_130219_01-e.pdf Iori Mochizuki _____ Français : Tepco va
Coolant water leaked 3 times only within 1 week due to the bad installation and freezing “Same as last year”
On 1/19/2013, Tepco employee found a water leakage at the water treatment building. Due to this accident, they got to have to feed water to skimmer surge tank of reactor1
Reactor2 temperature decreasing since the volume of injection water was increased
Two of the thermometers of reactor2 have been showing the increase of temperature since last December. On 1/7/2013, Tepco labelled the 2 thermometers as “broken”. However, they kept on indicating
Reactor5 gets heated as water injection stops
According to Tepco’s plant parameter, water temperature of reactor5 goes up when the reactor water level decreases. Tepco has been having problems with the water injection pumps, which pieces of
Heat removal seawater flow rate decreased in reactor5 too
Reactor injecting water amounts are observed decreasing in reactor1 ~ 3. [Link] On 10/1/2012, Tepco announced the flow rate of residual removal seawater decreased in reactor5 as well. １号機から3号機の原子炉への注水量が低下している事が確認されました。
Injecting water to reactor1 ~ 3 decreased again
The coolant system of Fukushima plant is getting deteriorated. Tepco has been struggling to control water injecting system since 8/30/2012. (cf. Tepco struggling to control the coolant system, “Adjusted the
Tepco struggling to control the coolant system, “Adjusted the valves 7 times for 2 days”
On 8/30/2012, the injection water for reactor 1~3 decreased all of a sudden. (cf. Sudden decrease of injecting water for reactor1~3, cause not known) Tepco announced they fixed it
Sudden decrease of injecting water for reactor1~3, cause not known
Fukushima is not settled down at all. All they could do is just to keep giving water but because of the improvising construction, it’s becoming difficult to sustain the
