3 ms·
You bring up two advantages of nuclear’s competitors: 1. coal requires no processing after mining 2. solar and wind are less expensive For #1, it doesn’t seem
by aesh2Xa1 4y ago
You bring up two advantages of nuclear’s competitors:
1. coal requires no processing after mining
2. solar and wind are less expensive
For #1, it doesn’t seem like that statement is true:
https://www.sciencedirect.com/topics/earth-and-planetary-sciences/coal-processing https://www.sciencedirect.com/topics/earth-and-planetary-sci...
For #2, I’m interested in an energy cost comparison, including the cost of ongoing maintenance, too. Solar and wind seem like an obvious investment in our future.
I don’t know about the quality of “nuclearasia.com,” but I found an interesting anecdote that more directly answered the question “how much raw ore converts to a how much fuel rod?” The answer is that
* 2.5 tons of uranium ore = 1kg fuel
* 1kg uranium fuel = same energy output as 100 tons of coal
* 2.5 tons of uranium ore = same energy output as 100 tons of coal
> Even if you take a relatively poor ore (with a uranium content of 0.2%), it turns out that to produce 1 kg of enriched uranium fuel you need approximately 2.5 tonnes of uranium ore. If we recall that one kilogram of enriched uranium contains the energy “equivalent" of 100 tonnes of coal, it turns out that to produce the same amount of energy you would need 40 times less ore compared to the same amount of coal. Another advantage is that coal has to be delivered to the station in “bulk”
but there is no need to ship uranium ore far from the place of extraction. Uranium and uranium fuel take much less space than coal, and this means a dramatic reduction in transportation costs.
https://www.nuclearasia.com/knowledge-centre/much-uranium-ore-required-produce-one-kilogram-nuclear-fuel/?format=pdf https://www.nuclearasia.com/knowledge-centre/much-uranium-or...
What I’d like to know is the overall cost (mining, processing, transportation, handling/disposal, and maintenance) in terms of $/energy. I would think that individual energy plants could provide this information.
- _n_b_ 4y ago> What I’d like to know is the overall cost We can estimate this for nuclear pretty easily. From the UxC cost calculator[1], we can see the various components that go into getting mined ore, converting it, and enriching it. At today's prices, let's call it $2000/kgU. We need to add fabrication, transportation, and carrying costs to that. Let's call fabrication $250/kgU[2] and throw on another $50 for transport and misc costs, giving us $2500/kgU for finished fuel. Assuming we burn our fuel to a an average discharge burn of 50 GWd/MTU and the plant is operating at about 34% electrical efficiency, that works out to 0.6 cents/kWh for nuclear fuel. On to disposal, in the US utilities were previously charged 0.1 cents/kWh for disposal; utilities haven't been charged this fee since 2014 due to a disposal route not being available[3], although DOE retains responsibility for disposing of civilian nuclear waste. On top of that you have the plant's O&M costs, which are probably another 0.8-1.0 cents or so/kWh. [1] https://www.uxc.com/p/tools/FuelCalculator.aspx https://www.uxc.com/p/tools/FuelCalculator.aspx [2] https://www.sciencedirect.com/science/article/pii/S1738573315000224 https://www.sciencedirect.com/science/article/pii/S173857331... [3] https://www.gao.gov/assets/gao-21-603.pdf https://www.gao.gov/assets/gao-21-603.pdf