Water leaked at Japan's Onagawa nuclear plant
Local Japanese News In English
Water leaked out of spent fuel pools at the Onagawa nuclear plant in northeast Japan after a strong aftershock rocked the region late on Thursday, but there was no change in the radiation levels outside the plant, operator Tohoku Electric Power said on Friday.
It said water sloshed out of spent fuel pools in the plant's No.1, No.2 and No.3 reactors which had been shut down after the 9.0 magnitude quake on March 11, and had also leaked in three other locations in the No.3 reactor complex. (Reuters)
Source: News On Japan
Evacuation zone widened beyond 20km from Fukushima nuclear plant
Local Japanese News In English
The government on Friday added some towns outside a 20- kilometer radius of the crisis-hit Fukushima Daiichi nuclear power plant to the list of areas covered by its evacuation directive, due to concerns over high cumulative levels of radiation.
All residents in Katsurao, Namie and Iitate and some in Kawamata and Minamisoma in Fukushima Prefecture must leave by around late May, Chief Cabinet Secretary Yukio Edano said at a news conference.
The announcement came a day after the government declared the 20-km zone around the tsunami-stricken plant a no-go area.
(Kyodo)
Source: News On Japan
Japanese nuclear company confirms meltdowns in three reactors:
The Tokyo Electric Power Company (TEPCO) admitted yesterday that there had been meltdowns of fuel rods inside three reactors at its Fukushima Daiichi nuclear power plant soon after the March 11 earthquake and tsunami that crippled the plant. Ref. Source 9
Analysis: Risks too great for full Japan nuclear shutdown
Local Japanese News In English
Economic risks are too high for Japan to pull the plug on its 54 nuclear plants next year despite intense public pressure on Tokyo to cut reliance on atomic power in favor of other clean energy sources.
Unless Tokyo overrides resistance from local officials, orders reactor restarts and faces down public disapproval, by April next year Japan's last plant would shut for maintenance and leave the country with no nuclear power.
A massive earthquake in March crippled reactors, sparked the world's worst nuclear disaster in 25 years and left Japan struggling to supply homes and industry with power as nuclear capacity utilization fell to 36 percent. (Reuters)
Source: News On Japan
Reports: Why Things Fell Apart At Fukushima Plant
In new reports, the International Atomic Energy Agency and the Japanese government highlight the hazardous working conditions, lack of communication and last-ditch efforts by workers to contain meltdowns at the Fukushima Dai-ichi nuclear power plant in Japan. Early confusion among the leadership was also a problem.
Source: NPR Topics: Science
Things fell apart because the backup systems were not designed for a 40ft tsunami. They built for a 20ft - 24ft tsunami. Reports show that the backup systems did work after the earthquake and that the building survived the earthquake which was bigger than the design spec. The issue was that the generators were knocked out by the wave. Should the generators been on the roof or high enough that the wave couldnt have knocked them out, they wouldn't have faced this problem. However, they would need to check for what issues that the water could have created even with the power on (debris plugging up recirculating water systems and other potential problems). I know that they are looking at the seawall height of all walls protecting nuclear facilities, as I am very near the one that has shut down for improvements.
There is a lot of mistrust of the government and companies before this incident in Japan and the revelations following this incident definitely wont help matters.
Living here, I have had a lot of chance to talk with Japanese about it. The one thing that the group here I talk with mention was that for 3 complete meltdowns of reactors, the damage was fairly insignificant when compaired to the earthquake/tsunami combo. We all pretty well agree that TEPCO will be owned by the government very soon after a few of the lawsuits go through. The 2 frequencies of power delivery helped safeguard the south/west against any effects of the power starved north/east, but it wasnt good that they couldnt actually help. The government needs to get the information and communicate it properly to the people in order to help them stay safe. A lot of people believe that the government sat on information to make it look like things were in control. A lot of people believe that TEPCO sat on information to make it look like things were in control or only deliver bad news when they were 100% sure. We all agree that the Japanese people handled themselves with dignity during the entire event.
What kind of plant do you build to survive a 40 ft. Tsunami? Worst case scenario is an even larger one coming their way in the future. Maybe they need to build on higher ground and create a dike system for their water?