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A comment on EU experts to say nuclear power qualifies for green investment label: document. Parent comment

Re:EU experts to say nuclear power qualifies for green inves... by cbmuser on Saturday March 27, 2021 @03:02PM (#26604584)
That single hall is for the _whole_ country for _decades_.

Nuclear is the _only_ technology where the fuel and the waste for decades can be stored on-site. It's just extremely dense.

The Russians have a single hall for all their waste plus the waste of other countries such as Bulgaria or Ukraine:

> https://www.youtube.com/watch?v=_5uN0bZBOic&t=105s

The US even had a nuclear power plant with full fuel reprocessing on site:

> https://www.youtube.com/watch?v=Sp1Xja6HlIU

[ Parent | on HN ]
Re:EU experts to say nuclear power qualifies for green inves... by laurent92 on Saturday March 27, 2021 @03:34PM (#26604883)
Just for everyone to have a picture, uranium doesn’t take much room because it is quite heavy: 19.1g/cm3, denser than lead (11.3) but slightly less than gold (19.3) and plutonium (19.8).
[ Parent | on HN ]
Re:EU experts to say nuclear power qualifies for green inves... by fastball on Saturday March 27, 2021 @03:47PM (#26605001)
The density of uranium is secondary to just how unbelievably energetic (per unit mass of fuel) fission is.
[ Parent | on HN ]
Re:EU experts to say nuclear power qualifies for green inves... by loeg on Saturday March 27, 2021 @04:23PM (#26605292)
Energy density is the main reason you don't need much volume of uranium. Fission is just extremely energetic.

That c² factor in E = m c² is huge (9 * 10¹⁶).

It is really hard for humans to intuit about factors of ten to the power of 16 or 17.

[ Parent | on HN ]
Re:EU experts to say nuclear power qualifies for green inves... by Jabbles on Saturday March 27, 2021 @04:32PM (#26605388)
You need to include the units, else that doesn't make much sense - many physicists use units such that c = 1.

In this case the units (for speed²) you want are m²/s² = J/kg

[ Parent | on HN ]
Re:EU experts to say nuclear power qualifies for green inves... by loeg on Saturday March 27, 2021 @04:42PM (#26605477)
The fun thing is, the units are basically unimportant! A factor of 10^3 or two is peanuts on 10^17. Humans have just as terrible intuitions about 10^14 and 10^11 as they do about 10^17.
[ Parent | on HN ]
Re:EU experts to say nuclear power qualifies for green inves... by exporectomy on Saturday March 27, 2021 @09:28PM (#26607231)
The error is 10^17, not 10^3. Units are important.
[ Parent | on HN ]
Re:EU experts to say nuclear power qualifies for green inves... by StreamBright on Saturday March 27, 2021 @04:35PM (#26605414)
Your face when people figure out that burning coal produces 100x amount nuclear waste than an average nuclear power plant.

Your face #2 when people realise that this nuclear waste goes to the environment unfiltered.

https://www.sciencefocus.com/science/do-coal-fired-power-sta...

https://www.scientificamerican.com/article/coal-ash-is-more-...

https://www.epa.gov/radtown/radioactive-wastes-coal-fired-po...

https://pubmed.ncbi.nlm.ih.gov/20005612/

[ Parent | on HN ]
Re:EU experts to say nuclear power qualifies for green inves... by random_kris on Sunday March 28, 2021 @02:49AM (#26608523)
When our energy consumption increases by 10000 times where will.we store the waste? I am not against the nuclear, I am for it but I like to ask hard questions
[ Parent | on HN ]
Re:EU experts to say nuclear power qualifies for green inves... by random_kris on Sunday March 28, 2021 @02:49AM (#26608520)
When our energy consumption increases by 10000 times where will.we store the waste? I am not against the nuclear, I am for it but I like to ask hard questions
[ Parent | on HN ]