First Look Inside Fukushima Reactor Revealed

[rangerrebew]

First Look Inside Fukushima Reactor Revealed
A small robot is the first to show the underwater ruins of one of the world's worst nuclear plant disasters.
 
By Sarah Gibbens

PUBLISHED July 21, 2017

A robot sent to explore the submerged ruins of Japan's Fukushima nuclear plant is offering a new look at the damage from one of history's worst nuclear disasters. The device nicknamed "Little Sunfish" found melted clumps of material that could be the fuel debris it was sent to locate, according to updates Friday.

After an earthquake struck near Japan on March 11, 2011, a tsunami spurred by the quake hit the nuclear plant, damaging generators and causing three nuclear meltdowns and the subsequent release of radioactive material. No radiation-related deaths have been reported, but nearly 100,000 homes had to be evacuated in the aftermath of the disaster.

http://news.nationalgeographic.com/2017/07/fukushima-nuclear-reactor-robot-clean-up-video-spd/?utm_source=feedburner&utm_medium=feed&utm_campaign=Feed%3A+ng%2FNews%2FNews_Main+%28National+Geographic+News+-+Main%29

[Wingnut]

Posted as a PSA should the need arise.

[Smokin Joe]

http://www.youtube.com/watch?v=XWGoVZF0jik

[Mad Max]

I have been allowed to tour a nuclear power plant. Its very intimidating that you are standing next to a reactor if it exploded can cause massive damage.

[DB]

I have been allowed to tour a nuclear power plant. Its very intimidating that you are standing next to a reactor if it exploded can cause massive damage.

@Mad Max Welcome aboard!

[Mad Max]

I have been allowed to tour a nuclear power plant. Its very intimidating that you are standing next to a reactor if it exploded can cause massive damage.

This particular power plant is closed down because a Japanese company sold the plant faulty pipes that feed into the core. The core will be buried in reinforced "caskets' on the plant's grounds

[Mad Max]

@Mad Max Welcome aboard!

Thank you very much for the welcome.!!!

[Joe Wooten]

I have been allowed to tour a nuclear power plant. Its very intimidating that you are standing next to a reactor if it exploded can cause massive damage.

Light water reactors cannot explode. They can melt down if allowed to go too long without circulating coolant, but they cannot explode.

[Mad Max]

Light water reactors cannot explode. They can melt down if allowed to go too long without circulating coolant, but they cannot explode.

You are correct. But the reactors like San Onofre,El Diablo,Three Mile Island and Indian Springs can.

[Joe Wooten]

You are correct. But the reactors like San Onofre,El Diablo,Three Mile Island and Indian Springs can.

No, they cannot. I've never heard of Indian Springs and El Diablo, but the  San Onofre was two Combustion Engineering PWR's and one Westinghouse PWR and TMI was two Babcox and Wilcox PWR's, all light water reactors.

[Oceander]

No, they cannot. I've never heard of Indian Springs and El Diablo, but the  San Onofre was two Combustion Engineering PWR's and one Westinghouse PWR and TMI was two Babcox and Wilcox PWR's, all light water reactors.

Maybe he means Indian Point, in NY?

[Joe Wooten]

Indian Springs - Do you mean Indian Point in Upstate New York? If so, all three of those are Westinghouse PWR's.

[Mad Max]

No, they cannot. I've never heard of Indian Springs and El Diablo, but the  San Onofre was two Combustion Engineering PWR's and one Westinghouse PWR and TMI was two Babcox and Wilcox PWR's, all light water reactors.

I have been inside the control room of San Onofre and given the tour of the facility. I am very familiar with the reactor and the people who run it. El Diablo is managed by PG&E.

[Joe Wooten]

An El Diablo - Do you mean Diablo Canyon? If so that one is two Westinghouse PWR's. Again. NONE of these reactors can explode.

BTW....what plant had substandard Japanese piping installed???? That's a new on to me and I've been in the nuclear industry for almost 40 years.

[Mad Max]

An El Diablo - Do you mean Diablo Canyon? If so that one is two Westinghouse PWR's. Again. NONE of these reactors can explode.

BTW....what plant had substandard Japanese piping installed???? That's a new on to me and I've been in the nuclear industry for almost 40 years.

San Onofre. They closed it down because it would be too expensive to rip out the faulty pipes and put in new ones.

[Joe Wooten]

I have been inside the control roolm of San Onofre and given the tour of the facility. I am very familiar with the reactor and the people who run it.

I've worked in the control rooms and the whole plant of over 20 different plants in the US, Brazil, and Mexico, including San Onofre. None of them area capable of exploding.

[Mad Max]

I've worked in the control rooms and the whole plant of over 20 different plants in the US, Brazil, and Mexico, including San Onofre. None of them area capable of exploding.

In 1979, Three Mile Island had that little incident. Do you remember?

[Oceander]

In 1979, Three Mile Island had that little incident. Do you remember?

Three Mile Island was a reactor meltdown, not a reactor explosion.

[Oceander]

I've worked in the control rooms and the whole plant of over 20 different plants in the US, Brazil, and Mexico, including San Onofre. None of them area capable of exploding.

If you worked there and he took the tour, perhaps you ran into each other?

[Joe Wooten]

San Onofre. They closed it down because it would be too expensive to rip out the bad pipes and put in new ones.

Wrong!

Mitsubishi screwed up on the  replacement Steam Generators, specifically the upper part that separates the water from the steam. Specifically, when the plant got above 30% power, flow induced vibration went out of specified limits and the plant was limited to about 70% power without fixing the problem. It would have paid off for the plant to fix the problem, BUT the state of Californicatia officially hates nuclear power and bribed/threatened SoCal Edison to shut it down. The settlement money from the messed up steam generators would have paid for fixing the problem

[Mad Max]

Three Mile Island was a reactor meltdown, not a reactor explosion.

Chernobyl had its roof blown out spreading radiation

[Mad Max]

Wrong!

Mitsubishi screwed up on the  replacement Steam Generators, specifically the upper part that separates the water from the steam. Specifically, when the plant got above 30% power, flow induced vibration went out of specified limits and the plant was limited to about 70% power without fixing the problem. It would have paid off for the plant to fix the problem, BUT the state of Californicatia officially hates nuclear power and bribed/threatened SoCal Edison to shut it down. The settlement money from the messed up steam generators would have paid for fixing the problem

You were not at the facility.

[Oceander]

Chernobyl had its roof blown out spreading radiation

Yes, but last I heard, Chernobyl wasn't located in the U.S.

[Mad Max]

Yes, but last I heard, Chernobyl wasn't located in the U.S.

That is why there are containment domes to prevent for things from happening in the U.S. Chernolbyl did not have the same saftey standards we have here

[Oceander]

You were not at the facility.

You know this for sure?  He did just say that he's worked there before.

[Bigun]

If you worked there and he took the tour, perhaps you ran into each other?

@Joe Wooten is far more polite than I!

[Oceander]

That is why there are containment domes to prevent for things from happening in the U.S.

Uh, yeah.  How's that relate to the price of tea in China, or the conversation that was going on?

Or are you simply an anti-nuke nut?

[Wingnut]

 

[Mad Max]

You know this for sure?  He did just say that he's worked there before.

I have photographs of myself standing in front of the dome.

[Oceander]

@Joe Wooten is far more polite than I!

I hope he didn't think I was trying to insult him - @Joe Wooten I mean - I was just going for a little levity.

[Joe Wooten]

If you worked there and he took the tour, perhaps you ran into each other?

Probably not. I was there for two weeks back in 2012.

[Mad Max]

Grammar Nazis at work

[Mad Max]

Probably not. I was there for two weeks back in 2012.

I was there 6 months ago

[Oceander]

I have photographs of myself standing in front of the dome.

Nobody is saying you weren't there.  I asked how it is you knew that Joe Wooten wasn't there, particularly after he said he'd worked there.

[Mad Max]

I was there 6 months ago

I needed a clearance from SCE. I still have my visitors pass.

[Bigun]

I have photographs of myself standing in front of the dome.

I don't think that at all!

I would have told the troll to take a hike long ago is all I meant.

[Mad Max]

I don't think that at all!

I would have told the troll to take a hike long ago is all I meant.

I agree. He should take a long walk.

[Joe Wooten]

Chernobyl had its roof blown out spreading radiation

Chernobyl was a RMBK reactor, which was a plutonium production reactor scaled up for commercial power production. It operated on a positive void coefficient, which means that if steam forms in the core, nuclear fission rate goes up. The Russian operators had to work to keep those reactors from going out of control. The Western design Light water reactors are negative void coefficient reactors, which means that if steam forms in the core, reactivity goes down below the self sustaining point. operators at PWR/BWR/ CANDU reactors have to work at keeping them going. If they left them alone, they all shut themselves down. Edward Teller stood firm and got the old AEC to not allow scaling up of the plutonium production reactors at Hanford and South Carolina to commercial size. The US took a few more years of research to scale up the PWR's being developed for the Navy.

Again LWR's CANNOT explode.

[Bigun]

I agree. He should take a long walk.

Yeah! He should!  (He is YOU!!)


 

[Mad Max]

Chernobyl was a RMBK reactor, which was a plutonium production reactor scaled up for commercial power production. It operated on a positive void coefficient, which means that if steam forms in the core, nuclear fission rate goes up. The Russian operators had to work to keep those reactors from going out of control. The Western design Light water reactors are negative void coefficient reactors, which means that if steam forms in the core, reactivity goes down below the self sustaining point. operators at PWR/BWR/ CANDU reactors have to work at keeping them going. If they left them alone, they all shut themselves down. Edward Teller stood firm and got the old AEC to not allow scaling up of the plutonium production reactors at Hanford and South Carolina to commercial size. The US took a few more years of research to scale up the PWR's being developed for the Navy.

Again LWR's CANNOT explode.

San Onofre is a fission reactor not a Light Water. But there is always a chance of a meltdown that is why U.S. reactors have so much safety standards. One feature is a containment dome. That is why they constantly drill if there is an accident. I was even given a suit just in case.

[Mad Max]

San Onofre is a fission reactor not a Light Water. But there is always a chance of a meltdown that is why U.S. reactors have so much safety standards. One feature is a containment dome. That is why they constantly drill if there is an accident. I was even given a suit just in case.

I even questioned why there were surfers so close to San Onofre. They did not mind because they were constantly monitored by the security. They even roadblocks there down the main road. San Onofre is supposed to withstand a 7.0 earthquake.

[Joe Wooten]

You were not at the facility.

You are a moron.

I am a mechanical engineer, with a degree from UT Austin, specializing in power plant systems.

I used to work For Westinghouse and before that I worked at Comanche Peak, Dresden, Laguna Verde, Angra, Davis-Besse, Perry, Beaver Valley, Robinson, and  Cooper plants. After starting with Westinghouse, I've been at South Texas, Wolf Creek, Fort Calhoun, San Onofre, Waterford, and Prairie Island.

I've worked in operating nuclear plants with full unescorted access to the whole plant for extended periods ranging from weeks to decades.

You took a tour and now consider yourself an expert. Take a hike.

[Mad Max]

You are a moron.

I am a mechanical engineer, with a degree from UT Austin, specializing in power plant systems.

I used to work For Westinghouse and before that I worked at Comanche Peak, Dresden, Laguna Verde, Angra, Davis-Besse, Perry, Beaver Valley, Robinson, and  Cooper plants. After starting with Westinghouse, I've been at South Texas, Wolf Creek, Fort Calhoun, San Onofre, Waterford, and Prairie Island.

I've worked in operating nuclear plants with full unescorted access to the whole plant for extended periods ranging from weeks to decades.

You took a tour and now consider yourself an expert. Take a hike.

Right. I am King George of England. Anyone can claim your resume.

[Joe Wooten]

San Onofre is a fission reactor not a Light Water. But there is always a chance of a meltdown that is why U.S. reactors have so much safety standards. One feature is a containment dome. That is why they constantly drill if there is an accident. I was even given a suit just in case.

Lord, you are a complete moron. ALL reactors are fission reactors. Light water reactors are the type we have in the US/ Europe/Asia. A little basic research in Wikipedia would have educated you on the reasons why western style LWR's cannot explode. The containment buildings (not all are domes) are for containing fission by-products in the case of a meltdown. Your knowledge is pathetic and I will not argue with you any more until you get a few more facts.

[Mad Max]

Lord, you are a complete moron. ALL reactors are fission reactors. Light water reactors are the type we have in the US/ Europe/Asia. A little basic research in Wikipedia would have educated you on the reasons why western style LWR's cannot explode. The containment buildings (not all are domes) are for containing fission by-products in the case of a meltdown. Your knowledge is pathetic and I will not argue with you any more until you get a few more facts.

Light waters only make a part. The rest are fission. Nobody wants to live next to a fission in the United States.

[Mad Max]

Lord, you are a complete moron. ALL reactors are fission reactors. Light water reactors are the type we have in the US/ Europe/Asia. A little basic research in Wikipedia would have educated you on the reasons why western style LWR's cannot explode. The containment buildings (not all are domes) are for containing fission by-products in the case of a meltdown. Your knowledge is pathetic and I will not argue with you any more until you get a few more facts.

When people start calling names they are losing the fight. I would expect more class from an educated man. Talk to the hand.

[Bigun]

When people start calling names they are losing the fight. Talk to the hand.

In your case he is just stating facts.  Take a hike troll!

[Mad Max]

In your case he is just stating facts.  Take a hike troll!

I would expect more class from an educated man.Pathetic and sad

[Bigun]

I would expect more class from an educated man.Pathetic and sad

Expect in one hand and crap in the other.  See which one gets full first!

[Wingnut]

In your case he is just stating facts.  Take a hike troll!

The newbie is making friends and influencing people fast.  He must be a damn Dale Carnegie grad.