Originally posted by johnsky
The report itself places the possibility of weapons grade enrichment as far away as 2015...

Is that based on 1700, 3000, or 50,000 centrifuges?
Originally posted by johnsky
Those centrifuges are engineered for low grade purposes, you'd have to design test and build a whole new set of thousands of centrifuges designed for
weapons grade enrichment to achieve what you need.
I know that the media makes it seem like the two technologies are similar, but they aren't, not by a long shot. The only thing in common is the name
"Nuclear".

Here is the deal...
"All parts of centrifuges are built inside Iran. Each part is built in various parts of the country. Then they are assembled at one place," said Ali
Akbar Velayati, international affairs adviser to Supreme Leader Ayatollah Ali Khamenei, Iran's top authority.

So can you tell me what they are actually building? You say they are "engineered for low grade purposes" when the process is about the same. I
really do not understand what you are getting at with the "engineered" part for if they refine the U235 to 3.5% they can just continue to do it to
98%. What is needed here is just many more centrifuges to do it in a reasonable amount of time.
How many are actually needed, and why is 3000 a number they decided to shoot for?
The existence of a uranium enrichment programme has been one of the main bones of contention between the international community and Iran. The
operation of 3,000 centrifuges has previously been regarded as a ‘red line’ by the International Atomic Energy Agency (IAEA), as well as the
United Nations Security Council, as the operation of this number could potentially enrich sufficient amounts of weapons-grade uranium to construct one
nuclear warhead per year.

They are at the "red line" and want to continue to 15 times more.
Here is why I can not understand your point that they can not refine to 98%
Gas Centrifuge
The gas centrifuge process has been widely used in Europe for about 30 years to enrich uranium for the commercial nuclear power market. The process
uses a large number of rotating cylinders interconnected to form cascades. The UF6 gas is placed in the cylinder and rotated at a high speed. The
rotation creates a strong centrifugal force that draws more of the heavier gas molecules (containing the U238) toward the wall of the cylinder, while
the lighter gas molecules (containing the U235) tend to collect closer to the center. The stream that is slightly enriched in U235 is withdrawn and
fed into the next higher stage, while the slightly depleted stream is recycled back into the next lower stage. Significantly more U235 enrichment can
be obtained from a single gas centrifuge machine than from a single gaseous diffusion stage.

If you just keep running a richer amount of U235 through it you continually reduce the U238 and get a higher grade. This is the reason you need many
more centrifuges since the process is done over and over until you get your 98%.
Also even if there is some differences in the centrifuges THEY BUILD ALL THEIR OWN.
It is just that plan and simple.
[edit on 8-12-2007 by Xtrozero]