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THE Nuclear Power Thread pt 9 (merged)

Discussions of conventional and alternative energy production technologies.

Re: THE Nuclear Power Thread pt 9 (merged)

Unread postby EdwinSm » Fri 08 Mar 2019, 07:25:47

Problems at Hunterston B (UK). About 10% of graphite bricks in the core are found to be damaged. That seems to me to be a very high precentage.

The first pictures have emerged of cracking in the graphite bricks which make up the core of nuclear reactors at Hunterston B Power Station in Ayrshire.

Reactor three has not produced electricity since cracks were found to be forming quicker than expected.

About 370 hairline fractures have been discovered which equates to about one in every 10 bricks in the reactor core.


But they want to crack on with producing more power (until 20% of the bricks are damaged..

EDF plans to ask the regulator for permission to restart with a new operational limit of up to 700 cracks.


https://www.bbc.com/news/uk-scotland-47485321
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Re: THE Nuclear Power Thread pt 9 (merged)

Unread postby GHung » Mon 25 Mar 2019, 08:35:38

Federal Government Ups Its Commitment To Plant Vogtle, Secretary Perry Visits

Secretary of Energy Rick Perry visited Plant Vogtle for the first time Friday, to announce the federal government would guarantee $3.7 billion more in loans to the nuclear power plant’s expansion project.

Perry was joined by Governor Brian Kemp and Secretary of Agriculture and former Georgia Gov. Sonny Perdue for the announcement. They also witnessed the “tuopping out” of the containment vessel for one of the new reactors. That’s the building that actually holds the nuclear reactor.

The plant, in Waynesboro, is the only one under construction in the country, and would be the first new one in more than 30 years. With $8.3 billion in loans already guaranteed by the Obama administration in 2011, this brings Vogtle’s total federal support to $12 billion.

The expansion of Plant Vogtle with nuclear reactors 3 and 4 has had a delayed and expensive history. Both units were already supposed to be on the grid by now, and the project’s current budget is double the original estimate, at more than $25 billion, split between four owners, the largest being Georgia Power.

Secretary Perry touted his strong support for nuclear energy as part of an “all of the above energy strategy” of the administration before a crowd of Vogtle employees: “Ladies and gentleman look around you, this is the real new green deal. That’s what we’re looking at folks. This is America. This is what we can do together.”

“If you want clean energy that helps our environment, there is no cleaner source than nuclear energy. This is it,” he said, calling nuclear and coal the only two sources of energy “that are on site and uninterruptable.” .......

https://www.wabe.org/federal-government ... ry-visits/
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Re: THE Nuclear Power Thread pt 9 (merged)

Unread postby StarvingLion » Thu 04 Apr 2019, 11:46:26

Now that Ghung The Fake Solar Peasant has chimed in with no solution, I can only wonder how long it will be before Father Kaiserjeep who tells lies-to-children will torture us with his latest sermon.

Nuclear is doomed for the following irrefutable reason:

Mating an extremely sensitive nuclear fission core to large mechanical equipment is an exercise in futility. It requires the equivalent of Mission Control in Houston plus 5000 Marines to guard the place. As the debacle in Benghazi demonstrated, once the mortar rounds start landing in the "guarded" compound, the nuclear reactors will be abandoned and melt down.

Its only a matter of short time until Bankrupt France admits the truth: She can't afford to keep their nukes running and they can't afford to shut them down properly. They will abandon every one of them due to insolvency, and they will all melt down and blow up.
My message to The "Federal" "Reserve": "I will not obey"
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Re: THE Nuclear Power Thread pt 9 (merged)

Unread postby vtsnowedin » Sat 06 Apr 2019, 08:03:42

StarvingLion wrote:They will abandon every one of them due to insolvency, and they will all melt down and blow up.

Nuclear plants that become un-economic are shut down and decommissioned. They do not blow up. Vermont Yankee the one nearest me has been shut down for a while now(2014) and all the fuel has been removed and is being placed in storage casks on site well ahead of schedule. The bad thing is they did not build a new state of the art nuclear plant next to it as a replacement instead moving to natural gas etc.
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Re: THE Nuclear Power Thread pt 9 (merged)

Unread postby StarvingLion » Wed 10 Apr 2019, 11:16:40

vtsnowedin wrote:
StarvingLion wrote:They will abandon every one of them due to insolvency, and they will all melt down and blow up.

Nuclear plants that become un-economic are shut down and decommissioned. They do not blow up. Vermont Yankee the one nearest me has been shut down for a while now(2014) and all the fuel has been removed and is being placed in storage casks on site well ahead of schedule. The bad thing is they did not build a new state of the art nuclear plant next to it as a replacement instead moving to natural gas etc.


State of the art as in totally useless in a Post-Peak Oil world. There are no designs with proper security and automation.
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Re: THE Nuclear Power Thread pt 9 (merged)

Unread postby vtsnowedin » Wed 10 Apr 2019, 11:27:21

You are entitled to your opinion on that.
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Re: THE Nuclear Power Thread pt 9 (merged)

Unread postby dissident » Sun 14 Apr 2019, 20:47:39

A reactor design that for some reason has been neglected is the fission-fusion hybrid. Instead of trying to get all the energy from pure fusion in a tokomak, a fissile blanket is deployed to be irradiated by the fast neutrons that are produced in abundant quantities by the tokomak plasma even if no break-even is reached. An advantage of the hybrid design is that it can burn actinides. So hybrid reactors are able to burn all nuclear waste. Molten metal fast neutron fission reactors can burn through the longer lived waste but not the actinides. (Nuclear waste actinides decay completely in about 300 years).

https://www.neimagazine.com/news/newsru ... or-6168535
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Re: THE Nuclear Power Thread pt 9 (merged)

Unread postby diemos » Sun 14 Apr 2019, 21:36:12

It hasn't been neglected. It's just an added complication that's not needed for a fusion test bed.

It also doesn't do anything to solve the problem of neutron damage in the inner wall of the tokamak.
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Re: THE Nuclear Power Thread pt 9 (merged)

Unread postby EdwinSm » Mon 15 Apr 2019, 04:02:06

About eight (8) years after the accident:- Fukushima: Japan begins removal of nuclear fuel from damaged reactor

https://www.bbc.com/news/world-asia-47933031

This is good news, but it occurs in a time of relative prosperity and stability, so I wonder in nuclear reactors could ever be made safe in a collapse situation. I suppose the minimum would be to remove the rods from the cores and store in water.
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Re: THE Nuclear Power Thread pt 9 (merged)

Unread postby diemos » Mon 15 Apr 2019, 09:28:20

If Mad Max arrives abandoned nuclear reactors are going to be the least of your worries.

We had three nuclear reactors melt down and even for the surrounding towns panic and fear did the most damage. Currently the wildlife there is running rampant. It's not exactly a blasted moon scape.
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Re: THE Nuclear Power Thread pt 9 (merged)

Unread postby KaiserJeep » Mon 15 Apr 2019, 10:44:28

The legacy of Godzilla and the dozens of Grade "B" through Grade "D" monster movies lives on. Most people were exposed at a young and impressionable age to the BS about nuclear energy. Those who would debate endlessly and without any evidence were obviously frightened the most.
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Resistance is Futile, YOU will be Assimilated.

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Re: THE Nuclear Power Thread pt 9 (merged)

Unread postby dissident » Mon 15 Apr 2019, 19:27:57

BTW, fusion-fission reactors are the safest design by far. It is very easy to disable the tokomak plasma. It is hard to get it to be self-sustaining, but shutting it down can be done in microseconds. Without the tokomak high energy neutron source the fission inside the thorium blanket shuts down. No control rods could ever achieve this sort of neturon flux termination. The reactions inside the thorium blanket are not self sustaining by construction. The blanket is not able to form any sort of sub-critical and critical mass for self-sustaining reactions.
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Re: THE Nuclear Power Thread pt 9 (merged)

Unread postby diemos » Mon 15 Apr 2019, 21:56:41

Decay heat from fission products in a fusion-fission hybrid is just as big a problem as in a conventional fission design. If you don't keep the cooling going after shutdown it will melt down. There's no benefit to shutting the neutron production down in microseconds versus seconds for control rods.
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Re: THE Nuclear Power Thread pt 9 (merged)

Unread postby aldente » Sat 20 Apr 2019, 04:02:30

thanks for the hint Killjoy
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