Nuclear Reactor in Use 1.8 Billion Years Ago

Seraphina

Jedi Master
I came across this story and it reminded me of the Oak Island story how the C's said it was an ancient machine that was one of many.

http://www.theepochtimes.com/n2/content/view/32926/


Related articles: Science & Technology > Exploring Enigmas The Gabon Republic in Africa is rich in uranium. In 1972, A French factory imported uranium ore from Oklo, Gabon, and found to its surprise that the uranium had already been extracted.

Natural uranium contains 0.7 percent of uranium-235 (U-235), the fissionable isotope contained in nuclear fuel, but the uranium in Oklo contained less than 0.3 percent of uranium-235.

Scientists around the world gathered in Gabon to explore this phenomenon. They found that the site where the uranium was found is a highly technical underground nuclear reactor beyond the capabilities of our present scientific knowledge. This nuclear reactor came into being 1.8 billion years ago and was operational for about 500,000 years.

Scientists investigated the uranium mine and the results were made public at a conference of the International Atomic Energy Agency. Scientists found traces of fission products and fuel waste at various locations within the mine area.

Compared with this huge nuclear reactor, our current nuclear reactors are far less impressive. Studies indicate that the uranium mine’s nuclear reactor was several miles in length. However, for such a huge nuclear reactor, the thermal impact to its environment was limited to 40 meters (about 131 feet) on all sides. Even more astonishing, the radioactive waste materials have still not migrated outside the mine site. They are held in place by the surrounding geology.

Faced with these findings, scientists consider the mine to be a “naturally occurring” nuclear reactor.

However, Dr. Glenn T. Seaborg, former head of the United States Atomic Energy Commission and Nobel Prize winner for his work in the synthesis of heavy elements, pointed out that for uranium to “burn” in a reaction, conditions must be exactly right. For example, the water involved in the nuclear reaction must be extremely pure. Even a few parts per million of contaminant will “poison” the reaction, bringing it to a halt. The problem is that no water that pure exists naturally anywhere in the world.

Besides, several specialists in reactor engineering remarked that at no time in the geologically estimated history of the Oklo deposits was the uranium ore rich enough in U-235 for a natural reaction to have taken place.

Even when the deposits were first formed, because of the slow rate of radioactive disintegration of U-235, the fissionable material would have constituted only 3 percent of the deposits—far too low a level for a nuclear reaction. Yet a reaction did take place, suggesting that the original uranium was far richer in U-235 than a natural formation could have been.

If nature was not responsible, then the reaction must have been produced artificially. Is it possible that the Oklo uranium is the residue of an antediluvian reactor from a prehistoric civilization? It is probable that two billion years ago there was an advanced civilization in Oklo that was technologically superior to today’s civilization.
 
Very strange. Anything else about this on the net? I mean, other sources?
 
I don't know...gonna look. I just stumbled upon it at Epoch times website. It was the first time I had ever seen the website and was just poking around through the articles when I saw this one. I'll post if I find anything.
 
Mentioned here:

http://en.wikipedia.org/wiki/Natural_nuclear_fission_reactor

EDIT: And has some further links.
 
I found this paper which discusses the physics of a natural reactor

http://www.physics.isu.edu/radinf/Files/Okloreactor.pdf
 
I'm seeing the typical mix of fringe sites pointing to ancient technology and mainstream pointing to natural phenomena.
 
While Googling, I came across WikiPedia's entry, which pretty much pushes the natural reactor concept, even though the Epoch Times article offers solid reasons why such a concept is impossible.

- WikiPedia:
- Natural nuclear fission reactor (_http://en.wikipedia.org/wiki/Natural_nuclear_fission_reactor)
- Oklo (_http://en.wikipedia.org/wiki/Oklo)

- About dot Com - Geology (still ensists it was a natural reaction yet claims a river of water was used, ignoring the requirement for purified, filtered water)
- The Oklo Natural Nuclear Reactor (_http://geology.about.com/od/geophysics/a/aaoklo.htm)

- Autralia's Curtin University also maintains a natural phenomenon
- The Oklo Fossil Fission Reactors (_http://oklo.curtin.edu.au/)
- References (_http://oklo.curtin.edu.au/references.cfm)

- Idaho State University Physics department has a PDF written by Dr. Andrew Karam (From Rochester University). Once again, assumes that groundwater was sufficient for the process.
- THE NATURAL NUCLEAR REACTOR AT OKLO: A COMPARISON WITH MODERN NUCLEAR REACTORS
(_http://www.physics.isu.edu/radinf/Files/Okloreactor.pdf)
Editor's Note (from aforementioned PDF):
Despite some claims, there is no evidence or even credible theory that the Oklo
nuclear reactor was anything but a natural phenomenon. The 6 reactor zones are spread over a
huge area that was a uranium mine during the time it was first discovered. The reactor zones
were the result of natural physical processes, active for thousands of years. It should also be
noted that the possibility of natural nuclear reactors was first postulated by P. K. Kuroda (1956)

- University of Illinois has document that claims uranium, water and clay could support the reaction
- Natural Nuclear Reactors: The Oklo Phenomonem (_https://netfiles.uiuc.edu/mragheb/www/NPRE%20402%20ME%20405%20Nuclear%20Power%20Engineering/Natural%20%20Nuclear%20Reactors,%20The%20Oklo%20Phenomenon.pdf)


Gonzo

EDIT: oops, just saw a few posts occured while I was writing this. Apologies for any duplications.
 
yea...both side have compelling arguments, but as much as I love physics, sadly I am not a physicist...if only there were one around here with a rational but open mind who could chime in :D
 
Seraphina said:
Seraphina said:
Guardian said:
Seraphina said:
ancient technology and mainstream pointing to natural phenomena.

ROFL... like the two were separate then.

???

If your gonna be a smartypants...would you care to enlighten me? I appear to be missing the punchline

I think that what Guardian meant was that once upon a time, natural phenomena provided the basis for ancient technology -- she can correct me if I'm wrong.
 
Shijing said:
I think that what Guardian meant was that once upon a time, natural phenomena provided the basis for ancient technology -- she can correct me if I'm wrong.

That's exactly what I meant. Sorry if I came across as a "smartypants, " I wasn't trying to ...on this particular occasion ;D
 
Keep in mind that 1.8 billion years ago there was very little life on Earth. Very simple organisms only. So unless you are taking about time travellers going back and starting this reactor up, I don't see how it could be anything other than an, admittedly very odd, natural occurrence. I realize that the Cassies have some issues with the geological time scale however. Nevertheless, this is a VERY long time ago. I am not sure how breathable the atmosphere was back then. I would have to look it up.

Also, current enriched uranium reactors can run on fuel enriched to 3% U-235. Typically, enriched uranium fuel is 2.5 to 5% U-235. Some of the Canadian built CANDU reactors don't use enriched uranium at all. They run on natural uranium with 0.7% U-235. These reactors, however, require heavy water.

Still, Oklo is a very strange phenomenon. I have never heard of anyone finding a similar site anywhere else. As far as I know it is geologically unique.
 

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