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Question:

If a CME was so powerful it shut down the power grid, what would happen to nuclear power stations?

Also would i be safe 20 miles away from the power station if any things happened. I am talking about the power station Dungeness B in Kent England. also if anything were to happen how long would i have to get out of the radius of the station.

Answer:

I used to work at a nuclear plant. Electricity is used to provide water to cool the fuel rods. If electricity goes out for any reason, backup diesel generators kick on to provide the power to run the pumps. A battery system would run the control instruments. Also if the diesel generators went out they would use a battery backup for that as well. The safe area would depend upon the type of plant and system used to cool the rods. Generally if there was a complete failure of all systems you would have one day to evacuate the area. At the plant I worked at a 20 mile radius was considered the unsafe zone. Much would depend upon the direction of the wind at the time of any release of radiation. If you are extremely worried you can buy some pills containing potassium iodide that you could take in an emergency to protect your thyroid temporarily. Most plants have built in security measures to prevent the release of radiation in case of a problem. Truthfully most reactors have a tower which releases small amounts of radiation at regular intervals. So chances are that you are already being exposed to very small harmless doses without knowing it. Radiation is normally not harmful unless you are close to it or you get a large dose. We are all exposed to some type of radiation daily. Radiation doesn't always kill. Sometimes it does nothing to your cells and occasionally it can even be beneficial to cells.
Same thing that happens whenever there's a power failure over a large area. They diagnose it, they fix any damaged parts, and then they turn the power back on again. The plant itself is still going.
i could have theory that nuclear capability stations are completely automatic and could proceed produceing capability till the two the gasoline rods are spend or between the structures encounters an errors and shuts its self down. If some thing grew to become into to ensue to the cooling structures although earlier the gasoline grew to become into spent you are able to have a soften down on ya palms !
CMEs can induce current in long-distance power transmission lines. That can knock out enough transformers to shut down the grid. Power plants are not affected.

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