At 16:00, the water temperature of SFP4 is 35.8℃ (indicated by the temporary thermometer). It’s estimated to take 60 hours to reach 65℃, which is the safety limit. They are still investigating at the moment. will update by email.
UPS (Uninterruptible Power Supply) is interrupted to alart.
Alart : UPS bypass power supply, heat exchange unit A/B trip, heat exchange unit A/B circuit pump trip
Mail received at 16:41 6/30/2012
Tokyo newspaper reported, the back-up coolant unit doesn’t work, water temperature increases at 0.26℃/h. It was 35.8℃ at 16:00 of 6/30/2012. [Link]
Jiji reported both of the pumps stopped, UPS (Uninterruptible Power Supply) has gone out of order. The water temperature was 36.6℃ at 18:00 of 6/30/2012. [Link]
Though these 2 newspapers slightly contradict each other, based on what Tokyo newspaper reported, the water temperature increases at 0.5℃/h, it reaches 65℃ at 2:00 of 7/3/2012, and goes over 100℃ at 24:00 of 7/5/2012 roughly estimated. (JST)
However, it excludes the facts that the coolant water decreases as it evaporates and atmospheric temperature rises in day time, it may be faster.
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.