[natmaka]

An accident spreading hazardous substances over a large geographical area that are difficult to contain (or waste of this type) is unique to nuclear power; no renewable energy source poses such a threat.

Another problem is the urgency (due to the impacts) combined with the difficulty of modifying power plants as required by "lessons learned," in other words, bug fixes. Modifying or repairing solar panels or wind turbines is easier than working on a reactor and results in a smaller reduction in the plant's output. The effects of this are significant.

The number of victims (and more generally, the health impacts) of nuclear power depends on the method of analysis, which is controversial. This is true for Chernobyl and Fukushima, where the evacuation triggered by the nuclear accident officially caused 2,202 deaths (2019 count), and 2,313 according to the International Nuclear Association.

Even the maximum potential impact of an accident is debated.

The full impact of nuclear power will at best only be known after all dismantling is complete and the last cold waste is disposed of (before this deadline any mishap or stray waste can be costly), in a few thousand years.

[Moldoteck]

renewables are still made from different substances, one of which is copper. One byproduct of copper is extremely toxic- arsenic, and it's spills are not that different in terms of dangers. That's the point. For nuclear at least, over time decay happens, esp for most dangerous isotopes, but for chemical waste - it's forever.

Nuclear still has higher capacity factor than any VRE.

Evacuation numbers for Fukushima are accounted in the stat. But it's also worth mentioning Japanese govt acknowledged most of the deaths are caused by extreme evacuation measures that werent needed, but govt ignored the data it had to enforce them. The panic against nuclear caused them, not radiation.

[natmaka]

Arsenic: this only plays during mining (recycling is OK), and efficient measures are already in place (where and when was it a problem, and at which extent?)

> capacity factor

So what? Capacity factor (or another similar quantity such as physical efficiency, operating life, etc.) is a salient criterion in the case of equipment consuming materials or fuel without recycling them, or producing waste in quantity or in the long term that is dangerous... therefore does not concern nuclear power but hardly concerns renewables.

A low yield makes deployment more expensive but, considered alone, is not prohibitive: a mix of renewables producing adequately (quantity, permanence, impacts, total cost including recycling, etc.) is a good solution whatever its yield.

> most of the deaths are caused by extreme evacuation measures that werent needed

This is disputed and the real amplitude of the threat was not known during the nuclear accident. The tiny evacuation ordered was minimally cautious as experts predicted, during the accident, that the worst cast would imply evacuating up to 50 millions persons: https://en.wikipedia.org/wiki/Naoto_Kan#In_media

[Moldoteck]

There are some very recent arsenic spills events in copper mines...

Nuclear fuel can be recycled, just like renewables. It's mostly not done because it's cheaper not to, just like in renewables

The danger was known based on multiple data points. Japanese govt ignored them. And they acknowledged evacuation was not necessary in the way it was implemented

Capacity factor is important to understand how much firming you need

[natmaka]

> There are some very recent arsenic spills

Indeed, but nothing comparable to the spills at Chernobyl or Fukushima.

> Nuclear fuel can be recycled

Only once, and France, an industrial leader in this area, only manages to recycle 10% of its reactor fuel this way.

> It's mostly not done because it's cheaper not to, just like in renewables

No, that's completely false. Closing the fuel cycle was considered the Holy Grail as early as the 1950s, because everyone knew that uranium deposits would greatly limit the expansion of nuclear power. The industrialization of reactors of the most promising architecture (fast neutron-breeders, sodium-cooled) as well as others, attempted at great length and expense in many countries, failed everywhere ( https://en.wikipedia.org/wiki/Breeder_reactor#Notable_reacto... ), there is no ready-to-deploy model of such reactor, and this approach has been virtually abandoned, replaced by the pursuit of fusion.

> The danger was known based on multiple data points

Before the major nuclear accident at Fukushima, the formulas for calculating seismic risk (the tsunami was triggered by an earthquake) were incorrect because they neglected very old earthquakes. The cause was an inability to properly assess the risk. This inability was not universal, as some (for example, Y. Hirai in the case of the Onagawa nuclear power plant, which was closer to the earthquake's epicenter and withstood the earthquake: https://en.wikipedia.org/wiki/Onagawa_Nuclear_Power_Plant#20...) did take the necessary precautions.

> They acknowledged evacuation was not necessary in the way it was implemented.

Arms-chair tacticians are verbose after the fact, but nowhere to be found when the problem was an ongoing challenge and experts described the worst-case scenario. The testimony of the prime minister at the time, referenced above, is perfectly clear.

> Capacity factor is important to understand how much firming you need.

No value is prohibitive, as there are many other pertinent parameters.