Probably a weld on the reactor vessel. Those things are old and most should be shut down. But like everyone else, I enjoy the benefits of electricity. To bad there is a moratorium on construction of new nuclear power plants so these 60's designed and 70's built plants cannot be easily replaced.
As this is GLP I expect people with no scientific understanding or education to start in on greeeeeen energy, the classified power sources from zeti reticuli UFO's, secret Nazi super power systems, and extraction of unlimited energy from farts.
The only real solution is to abandon everything that draws power in any form. If you are in a rural area, you can do renewable on an individual basis, but this will never work in a high population density city.
Quoting: Anonymous Coward 61301259 Complete and UTTER BALDERDASH!
When I was a young child of 7 or 8,I began to research the use of fission as a means of generating electricity. The information that was available at the time was limited, but it was enough to see that there was an immensely complicated technology involved, and that what would actually happen under certain failures and human error was impossible to predict, but it ranged up to an including making a huge geographical area uninhabitable for thousands of years while killing directly hundreds of thousands or perhaps even millions of people.
By the time I was 10, I was CERTAIN that such endeavors were not only economically unsound, but would eventually result in serious accidents effecting millions if not billions of people. I wrote letters to senators and state representatives telling them of my fears, and not a one ever responded, not even once.
My conclusion at 10 YOA in 1972 was that the use of fissionable radioactive elements in the production of electricity was in fact insane, and that it was not if, but when there would be an uncontrolled runaway situation resulting in a explosion and a release of ungodly amounts of radiation. I now believe the people behind the proliferation of nuclear power are the same people who are trying to kill us every other way they can think of, what perplexes men about it is surely they realize they are killing the planet THEY live on too!
I feared it, I still do, I suppose because I knew what the potential was.
To be honest if nuclear fission reactors were the only viable method to produce electricity, I would be content to do without. But we DON'T HAVE TO! We have far more tenable ways to produce energy, using clean coal technology, natural gas, wind power,tidal power, hydroelectric power, and solar energy.The use of the heat of nuclear fission to produce electricity was without a doubt the most insane technological development since the Manhattan project produced an atom bomb, and two cities were annihilated in my opinion just to illustrate to the world the potential they had.
To boil down what I have said into a single sentence,
"There are psychopaths running the planet and they are intent on exterminating us all."
