Temperature of reactor 2 keeps getting high

 

Since 2/2/2012, temperature of reactor 2 has been in the increasing trend. Tepco announced the reason is not known.

It’s measured by one of the 3 heat gauges in the bottom of the container vessel.

2/2/2012 : 52 ℃
2/5/2012 5:00AM : 67.4℃
2/5/2012 11:00AM : 68.6℃ (+16℃)

Tepco analyzes it’s because the flow of water has changed for some reason, probably the water doesn’t hit the melted fuel anymore.
They decided to increase the amount of water to inject from 8.6 tones / h to 9.6 tones / h.

Source 1 2

福島第1原発事故 2号機原子炉の温度が2日以降、上昇続ける 5日朝時点で67.4度

フジテレビ系(FNN) 2月5日(日)12時47分配信
福島第1原発2号機の原子炉の温度が、2月2日以降、上昇を続けていて、東京電力は5日未明、原子炉への注水量を増やし、温度が低下するか確認することにしている。
2号機の原子炉圧力容器下部の温度は、2月2日におよそ52度だったが、その後、上がり続けていて、5日午前5時の時点で67.4度と、およそ15度上昇している。
これを受けて、東京電力は5日未明、原子炉への注水量を1時間あたり8.6トンから9.6トンに増やし、温度が低下するか監視するとしている。
原因について東京電力は、現時点で明確にはわからないとしているが、「冷温停止状態」の判断には影響はないとしている。
最終更新:2月5日(日)12時47分

About this site

This website updates the latest news about the Fukushima nuclear plant and also archives the past news from 2011. Because it's always updated and added live, articles, categories and the tags are not necessarily fitted in the latest format.
I am the writer of this website. About page remains in 2014. This is because my memory about 311 was clearer than now, 2023, and I think it can have a historical value. Now I'm living in Romania with 3 cats as an independent data scientist.
Actually, nothing has progressed in the plant since 2011. We still don't even know what is going on inside. They must keep cooling the crippled reactors by water, but additionally groundwater keeps flowing into the reactor buildings from the broken parts. This is why highly contaminated water is always produced more than it can circulate. Tepco is planning to officially discharge this water to the Pacific but Tritium is still remaining in it. They dilute this with seawater so that it is legally safe, but scientifically the same amount of radioactive tritium is contained. They say it is safe to discharge, but none of them have drunk it.

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