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Core removing struggle

The flow rate of nitrogen gas injection to reactor3 RPV has been increasing since this August

According to Tepco’s plant parameter, the flow rate of nitrogen gas injection to RPV in reactor3 has been increasing since this August. They keep injecting nitrogen gas into the reactors

Core removing struggle

Injected water to reactor1 is leaking to somewhere out of the reactor

According to Tepco’s plant parameter, the water level of reactor1 has been decreasing since August though the volume of water to inject had not been decreased until late November. The

Core removing struggle

Tepco reported they don’t know why nitrogen injection decreases the temperature of reactor1

According to the minutes of mid/long term Fukushima measures meeting held on 10/22/2012, Tepco is not sure about why nitrogen injection decreases the temperature of PCV in reactor1. Fukushima Diary

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Tepco injected nitrogen gas into reactor2 and 3 as well

On 10/23/2012, Fukushima Diary reported Tepco started injecting nitrogen gas into suppression chamber of reactor1 to avoid the risk of explosion. [Link] According to Tepco’s report “Mid/long term roadmap of

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Tepco mishandled coolant water injection to reactor3 to increase by 20% suddenly, “touched a valve mistakenly”

According to Tepco, coolant water injection to reactor3 spiked up by 20% suddenly. WSJ reported it was because a nuclear worker touched a valve mistakenly when they took out the

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Tepco increased water injection amount to reactor 2

Tepco increased amount of water to inject to reactor 2 from 5:00 to 11:00 on 4/20/2012. 東電が2号機への注水量を4/20の午前5時から11時にかけて増加させていたことが分かりました。増加量は以下の通りです。 8.6 m3/h → 8.9 m3/h (↑ 103%) The increased amount of water 0.3 m3/h