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Those dipshits built their reactor too close to sea level, and did not have an adequate tsunami wall to keep the backup generators dry when the tidal wave hit. What's more, Japan has two different grids, and they were only plugged into one of them, so that when that link was severed they lost their backup power from the grid. When you shut a reactor down the fuel keeps producing decay heat, so you need an alternate source of power available to pump water through the fuel just to keep it cool (eventually you don't need this any more but that takes months after shutdown). It was obvious that they had underbuilt the wall because another power plant nearby had a better wall built at the demand of its engineer and it stayed dry. http://thebulletin.org/onagawa-japanese-nuclear-power-plant-didn%E2%80%99t-melt-down-311 When you don't keep the fuel cool, the decay heat eventually gets intense enough to melt through the steel vessel that holds it, and this is called a meltdown. This has happened to some degree in a few of the Fukushima units, but the hardest hit one has completely lost its fuel. It is probably working its way through the lower levels of the concrete building that houses the reactor. The owners of the plant have sent a robot in to try to find this leaked fuel but the robot broke down. http://www.theguardian.com/environment/2015/apr/13/fukushima-robot-stalls-reactor-abandoned The radiation that was leaking out into the ocean in the months after the disaster was actually coming from the spent fuel pool, which is where they place used fuel in water to cool it down enough that they can package it up for cold storage. These are apparently pretty close to sea level and they developed small cracks letting the cooling water out into the surrounding environment. If you don't live in the immediate area around Fukushima, this probably won't affect you. The ocean is a very loving big place. Don't gorge on fish from the pacific and you will be fine. wilfredmerriweathr fucked around with this message at 15:42 on Apr 16, 2015 |
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Apr 16, 2015 13:07
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