Posted by warbaby on April 14, 2021 at 11:07:46 from (24.247.205.221):
In Reply to: Re: Electric_pick-ups posted by john in la on April 14, 2021 at 08:45:38:
You mean like these? The accident was triggered by the Thoku earthquake and tsunami on Friday, 11 March 2011.[11] On detecting the earthquake, the active reactors automatically shut down their normal power-generating fission reactions. Because of these shutdowns and other electrical grid supply problems, the reactors' electricity supply failed, and their emergency diesel generators automatically started. Critically, these were required to provide electrical power to the pumps that circulated coolant through the reactors' cores. This continued circulation was vital to remove residual decay heat, which continues to be produced after fission has ceased.[12] However, the earthquake had also generated a tsunami 14 metres (46 ft) high that arrived shortly afterwards and swept over the plant's seawall and then flooded the lower parts of reactors 14. This flooding caused the failure of the emergency generators and loss of power to the circulating pumps.[13] The resultant loss of reactor core cooling led to three nuclear meltdowns, three hydrogen explosions, and the release of radioactive contamination in Units 1, 2 and 3 between 12 and 15 March. The spent fuel pool of previously shut down Reactor 4 increased in temperature on 15 March due to decay heat from newly added spent fuel rods, but did not boil down sufficiently to expose the fuel.[14]
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Today's Featured Article - Grain Threshing in the Early 40's - by Jerry D. Coleman. How many of you can sit there and say that you have plowed with a mule? Well I would say not many, but maybe a few. This story is about the day my Grandfather Brown (true name) decided along with my parents to purchase a new Ford tractor. It wasn't really new except to us. The year was about 1967 and my father found a good used Ford 601 tractor to use on the farm instead of "Bob", our old mule. Now my grandfather had had this mule since the mid 40's and he was getting some age on him. S
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