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The Legacy Of Fukashima


fukushima-mutant-flowers_zpsrvxvg79q.jpg

 

These mutant daisies are appearing around the wreak of the Fukashima Daiichi power station.

 

In March 2011 Japan was struck by a massive 9.0 quake. The Fukashina (BWR) boiling water reactors survived the earthquakes- one of the most massive in world history. The reactors scrammed and shut down- everything was working as it was supposed to until a massive tsunami struck the plant and wiped out the plants emergency power supply.

 

Without power, the reactor cooling systems failed and the radiation and temperature in the reactor cores soared. Water got so hot that the oxygen and hydrogen separated and accumulated to dangerous levels and eventually exploded. One by one reactors 1 through 4 were destroyed by run-away nuclear reactions releasing massive amounts of radiation.

 

Fukushima-explosion_zpslnuolck6.jpg

 

It's been over four years and no one, NO ONE has a clue how to clean up the site. TEPCO's plan, the operating company, most optimistic plan takes forty years and requires that new technology be developed.

 

The Fukashima disaster is not over. It won't be for a very long time. In fact, it is constantly leaking radioactive water into the Pacific Ocean.

 

Many people would point at Fukashima as a reason why nuclear power should go. I think this needs a qualifier: nuclear power in its current form should go. Today's nuclear plants are based on the Uranium fuel cycle. It messy, very radioactive and creates tons of highly radioactive waste that we have no idea what to do with.

 

Why Uranium? In the 1950s when the USSR and the United States were designing the first commercial nuclear power plants there were two main directions that they could have turned: Uranium or Thorium.

 

The reason that the decision was made to pursue Uranium based designs is that it supported the nuclear weapons arsenals that both sides in the Cold War were building. By having those reactors available, they could be modified to create the highly enriched Uranium that was required for nuclear weapons.

 

Uranium based reactors were fairly easy to design and build. The fuel was easily refined but there were serious drawbacks. They create a lot of radioactive wastes. The early designs were dangerous. The biggest problem is that while there is a high level of safety and reliability, when things go wrong, they go wrong in a very big way.

 

The Thorium Question? With our energy and environmental problems, nuclear power supplies 20% of the American power grid. We are not in a position where we can simply turn them off and call it a day. Nothing that we know of offers the bang for the buck and doesn't create massive amounts of CO2 emissions. We are between a rock and a hard place. We can NOT go forward with Uranium plants. They are just too dangerous.

 

So.. we have to take a long look at Thorium based reactors. Everything about the Thorium fuel cycle is different. Thorium burns cleaner, doesn't create nearly as much waste and the reactor designs are much safer. Furthermore- Thorium can not be weaponized. Prototype Thorium reactors are operating in China, India and the United States and all signs are that over the next decade production reactors will be available to replace the aging Uranium based reactors that are being decommissioned.

 

It won't happen overnight but expect to see our legacy of dangerous Cold War legacy reactors going the way of modems and floppy disks. We no longer need thousands of nuclear weapons, nor do we need the infrastructure to build more. It's time to put the evil genie of Uranium based nuclear power back in the bottle forever.

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buildercub

Posted

Pretty amazing though that life is already thriving around the disaster area, even if it's a bit unusual. Same with Chernobyl, nature has completely taken over again despite the radiation. It may be a cliche by now but life always finds a way.

  • Like 4
Aditus

Posted

Okay, let's talk about the daisies first. What you see here is a phenomenon called  'stem fasciation'. It has been found in hundreds of plant species and is a normal mutation. It occurs sporadically and is not hereditably. These daisies have been found in Nasushiobara, which is 100km away from Fukoshima, where, according to experts, the radiation level is unproblematic. The likelihood that particles from the nuclear plant are responsible is low.

 

About the rest. Hmmm...for me this sounds like you've fallen victim of astroturfing. I don't want to go into detail here, but the fact alone that ²³³uranium is one of the waste products is a big no no for me as it can be used for nuclear weapons. A byproduct is ²³²uranium, which emits gamma radiation. The technology is still at an immature stage, so risks, costs and consequences can't be predicted. There is an interesting survey study commissioned by the Norwegian government, which didn't lose its significance, although it's from 2008.

 

https://www.regjeringen.no/globalassets/upload/OED/Rapporter/ThoriumReport2008.pdf

 

http://www.reuters.com/article/2008/02/15/us-norway-nuclear-thorium-idUSL1538756620080215

 

And no, I'm not a friend of producing energy by nuclear fission. I totally out myself as a supporter of the green energy concept. :P

  • Like 1
Daddydavek

Posted

Fukashima, like Chernobyl and even the earlier 3 Mile Island, are all vivid reminders of why large stand alone nuclear power plants are an ongoing problem.  In a world of terrorists, such power plants are also too inviting as a target.

 

Wind, wave and solar energy certainly need to be further exploited in an increasing power hungry world.  However, I suspect that the global catastrophe of global warming will not be stopped by the puny efforts of the worlds governments or global corporations.  

  • Like 2
JamesSavik

Posted

The entire history of nuclear technology can be summed up into leaping before we looked.

As I am an engineer, I'm much less a candidate for getting my crank yanked. I've been following the Fukashima disaster since it's very first hours. What happened was basically very simple- the power that ran the cooling system failed. The consequences were anything but simple.

A more precise and detailed account of what happened would take volumes and some of it would be pure conjecture because the events were so radioactive that not even drones or remote sensors would have survived to offer readings.

We can't just turn them off. We can't even figure out how to clean them up. What we have to do is find a replacement that doesn't offer the same or even worse risks and environmental costs.

What has to happen is to leave Uranium behind as nuclear fuel. The best candidate replace it is Thorium. If a different set of decisions had been made in the fifties, we wouldn't have this problem now.

  • Like 1
Aditus

Posted

Well, I didn't mean to insult you or your expertise, James. Astroturfing is an interesting phenomenon, which doesn't necessarily means you're getting your crank yanked, but that interested parties want certain things to be discussed.

Ashi

Posted

There are also wind power and solar power.  Yes, they're not as cheap as nuclear power, but they're getting there.  They burn nothing so there is no emission issue.  Most high schools here have solar cells roof over the parking lots, so school can generate self-sufficient power usage and perhaps sell extra power in Summer for money.  20% of SF's power is generated by Hetch Hetchy hydro plant, though the reservoir that keeps the hydro plant is a controversy in itself.

JamesSavik

Posted

The problem with wind and solar power- and any credible engineer will back me on this- is that the power produced is  inconsistent. It simply can't create a reliable base line of power that you need to build a power grid when it's dark and the wind isn't blowing.

 

Geothermal power has that potential but Obama's backers didn't invest in it so it is being overlooked. That seems to be the acid test on which alternative energy methods is getting the federal billions.

  • Like 1

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