Re: Increasing energy costs

On Sat, 29 Mar 2008 10:44:24 -0700 (PDT), bill
<ford_prefect42@xxxxxxxxxxx> wrote:

On Mar 29, 4:59 am, T. Keating <tkuse...@xxxxxxxxxxx> wrote:
On Sat, 29 Mar 2008 01:06:45 -0700 (PDT), bill

<ford_prefec...@xxxxxxxxxxx> wrote:
My $25000/kg of uranium is the cost/kg at which uranium generated
electricity increases in cost by *1* cent/kwh.

wrong.. more like 77.5 cents per kWh.. not including enrichment,
construction, operational, and decommissioning costs..

math..

Initial fuel load 1GWe .. 100 metric tons of enriched UO2
before enrichment.. ~660 metric tons of U3O8(yellow cake)..
two refuelings, replacing 1/3 of fuel rods every 1.5 years
220 tonns * 2....

660MT + 220MT + 220MT == 1100 MT
1.5 years * 3 == 4.5 years @ 90% duty cycle..

1100 * 1000MT/kg * 25,000$/kg == 2.75e+10 dollars.. (27.5 Billion
dollars)

2.75e+10 / (4.5 years * 365.25 * 24 * .9 * 1,000,000(kWh/hr)) == 0.775
dollars per kWh or 77.5 cents per kWh in U3O8 costs..

except that with refuelling, 96% of the fuel that you remove from the
reactor goes back into the reactor. your numbers are correct for the
once through fuel cycle such as is practiced stupidly in the us, in
france, my number is correct.

No your numbers are NOT correct or even close..

A spent fuel's rod remaining uranium content is nearly all U-238..
inert.. 80 to 90%of the U-235 content has undergone fission..

New reactor fuel.. 3.5 to 4.5 % U-235 content..
Spent fuel.. less than 1% U-235 content.. approx 0,7% new Pu
content..

Mined U isotopic breakdown.. 0.7% U-235, 99.3% U-238 content..

P.S.. The world has plenty of spare U-238.(Depleted Uranium)..
We used it to tip anti-tank weapons.

It's the U-235 isotope that's a rare commodity..
http://www.uic.com.au/nfc.htm
.

Relevant Pages

  • Re: Increasing energy costs
    ... construction, operational, and decommissioning costs.. ... two refuelings, replacing 1/3 of fuel rods every 1.5 years ... dollars per kWh or 77.5 cents per kWh in U3O8 costs.. ...
    (sci.energy)
  • Re: Increasing energy costs
    ... construction, operational, and decommissioning costs.. ... replacing 1/3 of fuel rods every 1.5 years ... dollars per kWh or 77.5 cents per kWh in U3O8 costs.. ...
    (sci.energy)
  • Re: Europe and Mobile Phones
    ... Italy's Tim mobile service already has a program, called Tim Globe, ... that greatly reduces roaming costs. ... in Europe costs 1 euro for the connection and 19 cents a minute. ... charge over a 20-minute call, ...
    (rec.travel.europe)
  • Re: Canada says no plan to get rid of the penny soon
    ... Good merchants avoid anything that causes discontent, ... and those who don't like to bother with exact change because ... To stop striking cents would not save a substantial ... essentially none of those core costs are reduced. ...
    (rec.collecting.coins)
  • Re: What do I need to conserve power on my old Linux box?
    ... So it's one government body regulating a bunch of arm's length government bodies and crown corporations. ... for residential and small business customers (which are defined as those using less than 250,000 kWh per year). ... On top of that are delivery fees, regulatory fees, and a "debt retirement charge" to cover stranded debt left behind after the government restructured things a few years back. ... So it's just the four basic categories of costs. ...
    (comp.os.linux.hardware)