On NRC’s report “Lessons Learned from Japan’s March 11 2011 Earthquake and Tsunami (SECY-11-0137) [Link]”
they expressed the concern about the equipment at US nuclear plants, which may cause the similar type of crisis as SFP4 of Fukushima.
February 17, 2012 SECY-12-0025
FOR: The Commissioners
FROM: R. W. Borchardt
Executive Director for Operations
SUBJECT: PROPOSED ORDERS AND REQUESTS FOR INFORMATION IN RESPONSE
TO LESSONS LEARNED FROM JAPAN’S MARCH 11, 2011, GREAT TOHOKU
EARTHQUAKE AND TSUNAMI
Finally, Enclosure 6 to this paper contains an order requiring enhanced spent fuel pool (SFP)
instrumentation. During the events in Fukushima, responders were without reliable
instrumentation to determine the water level in the SFP. This caused concerns that the pool
may have boiled dry, resulting in fuel damage. Fukushima demonstrated the confusion and
misapplication of resources that can result from beyond-design-basis external events when
adequate SFP instrumentation is not available. The SFP level instrumentation at U.S. nuclear power plants is typically narrow range and, therefore, only capable of monitoring normal and slightly off-normal conditions. Although the likelihood of a catastrophic event affecting nuclear power plants and the associated SFPs in the United States remains very low, beyond-designbasis external events could challenge the ability of existing spent fuel pool instrumentation in providing emergency responders with reliable information on the condition of SFPs. Reliable
and available indication is essential to ensure plant personnel can effectively prioritize
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.