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[Various] Japan Nuclear Emergency - Continuous Coverage of Damage and Radiation Risks - Page 26  

post #251 of 2836
Quote:
Originally Posted by justarealguy View Post
It wasn't just the warped rods, it's that the tips of the rods were covered in graphite to displace the coolant before the neutron-absorbing shaft was in place. This momentary contact with the graphite caused a reaction in the lower part of the core that caused more heat to be generated, instead of slowing the reaction down.
That, and a positive void coefficient that caused the reaction to run away once the coolant began bubbling.

Nowadays comparing nuclear plants to Chernobyl is like being horrified that the Model T didn't have airbags.
post #252 of 2836
Quote:
Originally Posted by justarealguy View Post
It wasn't just the warped rods, it's that the tips of the rods were covered in graphite to displace the coolant before the neutron-absorbing shaft was in place. This momentary contact with the graphite caused a reaction in the lower part of the core that caused more heat to be generated, instead of slowing the reaction down.
Quote:
Originally Posted by Dyson Poindexter View Post
That, and a positive void coefficient that caused the reaction to run away once the coolant began bubbling.

Nowadays comparing nuclear plants to Chernobyl is like being horrified that the Model T didn't have airbags.
Ty for the further clarification.

LOL. True, but people will still compare and need to know these incidents aren't alike.
post #253 of 2836
Quote:
Originally Posted by Dyson Poindexter View Post
That, and a positive void coefficient that caused the reaction to run away once the coolant began bubbling.

Nowadays comparing nuclear plants to Chernobyl is like being horrified that the Model T didn't have airbags.
Chernobyl was an extremely unlikely combination of poor design, terrible management, uneducated operators, people ignorant to the effects of radiation and a government that hides vital information from those directly in control of the reactor.
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post #254 of 2836
Quote:
Originally Posted by justarealguy View Post
Chernobyl was an extremely unlikely combination of poor design, terrible management, uneducated operators, people ignorant to the effects of radiation and a government that hides vital information from those directly in control of the reactor.
Yup, it was pretty much Murphy's law embodied in a nuclear accident.
post #255 of 2836
Glad to hear the situation is mostly under control. I think Japan has done a very good job thus far (from what I have read/heard) in dealing with the quake(s) and all that has happened due to it.

+1 rep to Japan
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post #256 of 2836
Quote:
Originally Posted by justarealguy View Post
Chernobyl was an extremely unlikely combination of poor design, terrible management, uneducated operators, people ignorant to the effects of radiation and a government that hides vital information from those directly in control of the reactor.
We def dont need another Chernobyl at all. Could you imagine "Chernobyl" in todays age. almost positive it would be worse this day n age then in 1986
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post #257 of 2836
Quote:
Originally Posted by 4LC4PON3 View Post
We def dont need another Chernobyl at all. Could you imagine "Chernobyl" in todays age. almost positive it would be worse this day n age then in 1986
If pre-86 RBMK reactors were still running, it could be. Luckily with modern reactors you have to try very hard to cause an incident.

Look at the Japanese plant:
  • Cooling failure
  • Generator failure
  • Battery backup failing
  • Structural damage
  • Little to no support infrastructure (Grid power, etc)
  • Big hydrogen explosion
With all that, there's still no meltdown/ hazardous leak. Even with an epic earthquake and tsunami, the plant has so far remained safe. That's modern plants for you.
post #258 of 2836
Quote:
Originally Posted by Dyson Poindexter View Post
If pre-86 RBMK reactors were still running, it could be. Luckily with modern reactors you have to try very hard to cause an incident.

Look at the Japanese plant:
  • Cooling failure
  • Generator failure
  • Battery backup failing
  • Structural damage
  • Little to no support infrastructure (Grid power, etc)
  • Big hydrogen explosion
With all that, there's still no meltdown/ hazardous leak. Even with an epic earthquake and tsunami, the plant has so far remained safe. That's modern plants for you.
That, and I think some luck has played the part, by no means is the situation over, if the second Tsunami causes issues or any other aftershocks...then we could be looking at a far worse problems, hence the 20KM evacuation methinks.
post #259 of 2836
Quote:
Originally Posted by ENTERPRISE View Post
That, and I think some luck has played the part, by no means is the situation over, if the second Tsunami causes issues or any other aftershocks...then we could be looking at a far worse problems, hence the 20KM evacuation methinks.
I think the 20km exclusion zone is more the result of no-one wanting to be accused of not being careful enough, should the nearly impossible actually happen.
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post #260 of 2836
I can't help but laugh at the people who were saying that alternative biofuels are stupid and nuke energy is the obvious safe alternative... There were a lot of people here on OCN saying that on some of the biofuels news articles only days ago.

EDIT: Yes nuke power is rather safe. But when things go wrong they really really REALLY go wrong...
    
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