Just how safe are molten salt and pebble bed reactors?

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Discussion Overview

The discussion revolves around the safety of molten salt and pebble bed nuclear reactors, particularly in comparison to historical nuclear disasters like Chernobyl and Fukushima. Participants explore the implications of public perception of nuclear safety and the relative risks associated with various energy sources.

Discussion Character

  • Debate/contested
  • Conceptual clarification
  • Exploratory

Main Points Raised

  • Some participants assert that molten salt and pebble bed reactors can never cause disasters on the scale of Chernobyl or Fukushima, suggesting this is a positive development for nuclear energy.
  • Others argue that the complexity of nuclear safety cannot be reduced to simple assertions and that public fear of nuclear disasters is significant, regardless of statistical comparisons to other energy sources.
  • A participant highlights that nuclear energy has caused less harm overall compared to other energy sources when considering deaths per unit of energy produced.
  • Concerns are raised about the hidden assumptions in public perceptions of nuclear safety and the rationality of people's fears regarding nuclear energy.
  • Another participant introduces the idea that other energy sources, such as hydroelectric power, can also have catastrophic consequences, citing historical dam failures.
  • Discussion shifts to the environmental impacts of solar energy production, with references to the toxic chemicals involved in solar panel manufacturing.
  • A participant questions the relevance of solar energy spills occurring at night when energy demand is high.

Areas of Agreement / Disagreement

Participants express differing views on the safety of nuclear reactors and the public's perception of nuclear energy. There is no consensus on the implications of these views, and the discussion remains unresolved regarding the overall safety and acceptance of nuclear energy compared to other sources.

Contextual Notes

Participants reference various energy sources and their associated risks, but the discussion lacks a thorough examination of the assumptions underlying these comparisons. The complexity of nuclear safety and public perception remains a significant theme without definitive conclusions.

greswd
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According to popular news, these two kinds of reactor designs can never cause another Chernobyl or Fukushima, the polluting of a vast area of land and rendering it uninhabitable for a vast length of time.

I just want to know how true this is. If so, it is really good news, and the world can certainly have more of such reactors.

Even an extremely minuscule risk of another Fukushima spooks the bejesus out of people, because the consequences are so immediate and devastating. Furthermore, tiny nations can be eradicated by such disasters, as their population is forced to relocate.
 
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Nuclear plant safety is much too complicated for a one paragraph flip answer.You're getting deep into hyperbole in the following.
greswd said:
Even an extremely minuscule risk of another Fukushima spooks the bejesus out of people, because the consequences are so immediate and devastating. Furthermore, tiny nations can be eradicated by such disasters, as their population is forced to relocate.
 
anorlunda said:
Nuclear plant safety is much too complicated for a one paragraph flip answer.

As a comment about the details of the subject, this is of course true. However, I think there is a simple answer to the key question the OP poses:

greswd said:
According to popular news, these two kinds of reactor designs can never cause another Chernobyl or Fukushima, the polluting of a vast area of land and rendering it uninhabitable for a vast length of time.

I just want to know how true this is.

It's true.

That said, your post contains a hidden assumption that should be brought out: that people being "spooked" by the possibility of another Chernobyl or Fukushima is sufficient reason for them to be unwilling to accept nuclear energy. The problem with that assumption is that, even taking Chernobyl and Fukushima into account, nuclear energy has still caused much less harm than any other energy source--many more people have been killed by other energy sources as compared to nuclear. If you compare deaths per unit of energy produced, the disparity is even greater. But the harms from other energy sources are not as concentrated, so it's easier to ignore them.
 
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PeterDonis said:
As a comment about the details of the subject, this is of course true. However, I think there is a simple answer to the key question the OP poses:
It's true.

That said, your post contains a hidden assumption that should be brought out: that people being "spooked" by the possibility of another Chernobyl or Fukushima is sufficient reason for them to be unwilling to accept nuclear energy. The problem with that assumption is that, even taking Chernobyl and Fukushima into account, nuclear energy has still caused much less harm than any other energy source--many more people have been killed by other energy sources as compared to nuclear. If you compare deaths per unit of energy produced, the disparity is even greater. But the harms from other energy sources are not as concentrated, so it's easier to ignore them.

Oh, nah, I'm not trying to raise any points about whether its a sufficient reason or not. But yeah, people aren't always so logical and rational.

Anyway, that's great news, such plants could serve us well for low-emissions in the intermediate time it takes for fusion to become viable.
 
Lots of text snipped.
PeterDonis said:
But the harms from other energy sources are not as concentrated, so it's easier to ignore them.

It's not always less concentrated for other forms of power. A series of dam failures in China in 1975 may have caused as many as 230,000 deaths, about 26,000 directly and the rest as a result of injuries or destruction of infrastructure.

https://en.wikipedia.org/wiki/Banqiao_Dam
Do you know whether you live downstream from a significant dam? Do hurricanes ever come to your area?
 
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BillTre said:
How many of these solar energy spills happen at night when we need power?
 
This thread drifted far away from the OP topic. In post #4, the OP said the question was answered.

Thread closed.
 

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