Nebraska nuclear plant thread.

[HowlerMonkey]

<Crackpot link deleted>

Anyone have details or an opinion rooted in science?

 

[Astronuc]

I know several people who work at the plant. They are very dedicated to their work, their families and their community.

The article cited in the OP is pure crackpottery (link to article was deleted per PF Guidelines).

http://www.oppd.com/AboutUs/22_007105

• The FCS plant’s reactor has been in cold shut down for a planned refueling outage since April 9. It will remain in that condition until the river recedes.
• The reactor and spent-fuel pool are in a normal, stable condition and are both protected; there has been no release of radioactivity and none is expected.

The plant is actually designed with greater flooding (1014 feet above mean sea level (MSL)) based on an upstream dam burst and additional rain locally.

The utility is expecting a peak river elevation of up to 1008.5 feet above sea level and has taken action to protect the switchyard and other capital assets from a greater flood.

There was an NRC action last year and the plant revised their flood protection program to address what the NRC considered deficient.
http://pbadupws.nrc.gov/docs/ML1109/ML110950135.pdf
http://pbadupws.nrc.gov/docs/ML1113/ML111370123.pdf
http://pbadupws.nrc.gov/docs/ML1019/ML101970547.pdf
http://pbadupws.nrc.gov/docs/ML1003/ML100351342.pdf
http://pbadupws.nrc.gov/docs/ML0936/ML093641134.pdf

 

[NUCENG]

<Crackpot link deleted>

Anyone have details or an opinion rooted in science?

OPPD rumor control site:
http://www.oppd.com/AboutUs/22_007105

Alert has been canceled
http://pbadupws.nrc.gov/docs/ML1115/ML111590877.pdf

NOUE remains in effect
http://pbadupws.nrc.gov/docs/ML1115/ML111570492.pdf

Small leak being sealed (46965)
http://www.nrc.gov/reading-rm/doc-collections/event-status/event/en.html

There has been a No Fly Zone (FAA NOTAM) over every US nuclear plant since 9/11. FAA was asked to issue a reminder. I' see if I can find a reference.

Edit: here is the reminder.
http://tfr.faa.gov/save_pages/detail_1_6523.html

Rdit here is a reference to the latesr issue of the 9/11 NOTAM
4/0811 ...SPECIAL NOTICE... THIS IS A RESTATEMENT OF A PREVIOUSLY ISSUED ADVISORY NOTICE. IN THE INTEREST OF NATIONAL SECURITY AND TO THE EXTENT PRACTICABLE, PILOTS ARE STRONGLY ADVISED TO AVOID THE AIRSPACE ABOVE, OR IN PROXIMITY TO SUCH SITES AS POWER PLANTS (NUCLEAR, HYDRO-ELECTRIC, OR COAL), DAMS, REFINERIES, INDUSTRIAL COMPLEXES, MILITARY FACILITIES AND OTHER SIMILAR FACILITIES. PILOTS SHOULD NOT CIRCLE AS TO LOITER IN THE VICINITY OVER THESE TYPES OF FACILITIES. WIE UNTIL UFN

 

[BLK]

Thanks for that info. Living in the area we saw all the stories on the news. Good to know they were just blown way out of proportion. Now if only the rest of the population were smart enough to see through the media's scare tactics.

 

[NUCENG]

Thanks for that info. Living in the area we saw all the stories on the news. Good to know they were just blown way out of proportion. Now if only the rest of the population were smart enough to see through the media's scare tactics.

Wait until the "informed public" latches onto this story.

http://www.huffingtonpost.com/2011/06/20/us-nuclear-regulators-safety-industry_n_880222.html

Strip out the one-sided opinion, misinformation, Fear Mongering,and untraceable claims and you are left with "AP" and the date. My favorite part is their claim that UCS doesn't oppose nuclear power. They spent a year researching and this is what they came up with?

 

[NUCENG]

Here is the Cooper NOUE and notification of oil release to the river.

http://www.nrc.gov/reading-rm/doc-collections/event-status/event/en.html

 

[SteveElbows]

Strip out the one-sided opinion, misinformation, Fear Mongering,and untraceable claims and you are left with "AP" and the date.

You push that point much too far in my opinion. As articles about nuclear issues go, that one isn't so bad, and even if there are some mistakes in it there is still much left worth thinking about.

Ageing reactors are a real issue, and is correct to look at this with some concern, and not to dismiss all but the most technical of talk on such matters as ill-informed fear-mongering.

There is always a balance to be struck between risk and reward, and ageing equipment may change this balance. Its very important that regulations are not being relaxed in order to maintain a balance on paper that does not reflect the full reality of the situation.

By all means deride and mock the most hysterical anti-nuclear nonsense, but take this too far and you'll actually end up adding to the lack of public trust. Public ignorance and media hysteria are reasons to open up more and dedicate even more energy towards maximum transparency and understanding.

 

[Astronuc]

Some more information - US plants on flood alert
http://www.world-nuclear-news.org/RS-US_plants_on_flood_alert-2006114.html

 

[NUCENG]

You push that point much too far in my opinion. As articles about nuclear issues go, that one isn't so bad, and even if there are some mistakes in it there is still much left worth thinking about.

Ageing reactors are a real issue, and is correct to look at this with some concern, and not to dismiss all but the most technical of talk on such matters as ill-informed fear-mongering.

There is always a balance to be struck between risk and reward, and ageing equipment may change this balance. Its very important that regulations are not being relaxed in order to maintain a balance on paper that does not reflect the full reality of the situation.

By all means deride and mock the most hysterical anti-nuclear nonsense, but take this too far and you'll actually end up adding to the lack of public trust. Public ignorance and media hysteria are reasons to open up more and dedicate even more energy towards maximum transparency and understanding.

I understand that risk,and you are right that aging is an issue that needs to be addressed. I believe it is being addressed. But if you look at this article closely you will see that they started out with a conclusion and looked for anything they could find to support that conclusion. There is no balance to that article.

For example, They complain about license renewal in light of aging. Yet the license renewal process requires plants to institute aging management programs including replacement of components with known aging issues. They didn't look at any regulatory actions that have imposed stricter requirements or new requirements on existing plants. At one point the articleclaims to have "found proof", but they must be saving that proof for a future article.
They complain about risk-informed approaches, and claim it is nothing but a means to further loosen standards, but if Japan had not been so far behind on risk analysis they might have identified risks of tsunamis and flooding.

Take a look at their quotes from NRC Commissioners and NEI and you see the immediate "Yes, But," that negates what they just heard. That isn't investigative reporting, it is editorializing.

Try to identify a reference so you could research their complaints for yourself and you find maybe a date or a date range, they claim had such and such a number of failures. Even if their interpretation is right, and with all the resources I know about it would not be easy to prove or disprove the validity of those claims. The average citizen would find that impossible.

This thread is probably the wrong place to go into this. Maybe a Press Performance thread should be started. I just provided information here to counter the wild speculation and fear mongering of a "level 4" event at Ft Calhoun, when I saw this atrocity.

One of the biggest non-issues they raise is RPV embrittlement. The original standards were written for PWRs where the core edges are very close to the RPV walls. In a BWR the core is close to the shroud which has the water filled downcomer region between the shroud and the RPV wall. This extra water provides a significant reduction in neutron flux at the RPV wall. Relaxations for BWRs RPV NDT requirements recognize that FACT. But the article nuances that into a problem.

Nuclear plant reliability and capacity factors are at record levels in the US. If everything was leaking and rusting and falling apart, how could that be?

No, I appreciate your warning, but this article, probably researched for a year as they claim, got rushed to print to chime in on the controversy of Fukushima and apparently lax regulation in Japan. It fails to do anything that a high school junior couldn't duplicate in a weekend by plagiarizing a few anti-nuclear websites and making a few phone call interviews.

 

[Danuta]

... but if Japan had not been so far behind on risk analysis they might have identified risks of tsunamis and flooding.

NUCENG, would you clarify further what you mean by Japan being "so far behind on risk analysis"? Because I don't get it. Risk analysis for Japan is not something one can be "far behind on". History records quakes and tsunami. For Fuku, it would, at this stage, appear to have been a clear deliberate glossing over of risk instead, don't you think?

...on the controversy of Fukushima and apparently lax regulation in Japan.

Also...is there still a controversy regarding Fuku in the "apparently" lax regulation in Japan? How so? I thought the lax regulation was now proven rather definitive. You know, with TEPCO, the Japanese gov. and regulators all looking out for one another.

 

[Orcas George]

Nuclear plant reliability and capacity factors are at record levels in the US. If everything was leaking and rusting and falling apart, how could that be?

I'm curious if you see this as evidence of reliability:

Rumor: Because of a fire at Fort Calhoun Nuclear Station on June 7, the plant’s spent-fuel pool was in danger of boiling and releasing radioactivity.

There was no such imminent danger with the Fort Calhoun Station spent-fuel pool.
Due to a fire in an electrical switchgear room at FCS on the morning of June 7, the plant temporarily lost power to a pump that cools the spent-fuel pool.
The fire-suppression system in that switchgear room operated as designed, extinguishing the fire quickly.

If "reliability" means "no TMI or Fukushima incidents for the last few years" then I would question whether you guys are using the term in the same way as us other folk.

 

[NUCENG]

I'm curious if you see this as evidence of reliability:

If "reliability" means "no TMI or Fukushima incidents for the last few years" then I would question whether you guys are using the term in the same way as us other folk.

In 90 minutes the fuel pool temperature rose 2 degrees. To say it was close to boiling goes beyond lying it is deliberate fear mongering.

You can twist and turn the facts any way you want here on the forum. You can sit in front of your computer, as can I, to research and see what we believe or disbelieve. People in Nebraska may not have that kind of time or even access to internet. They should not have to deal with these lies while they are fighting a major disaster.

You want to know about reliability look at the trends in nuclear power generation. SCRAM frequency is down. Production is up. Capacity factors are up. Unplanned outages are down. Doses to workers and offsite releases are down. None of these things would be true if the plants were not improving safety and reliability every day.

Why do you think the authors of the AP article were able to find all that information in Preliminary Notifications and event reports? The answer is that these problems are reported and public records. The fire at Ft Calhoun was self-reported. They are right there on the NRC website. If they needed Freedom of Information Requests it wasn't for that.

Orcas George, I don't doubt your sincerity is saying the fire was not the way to earn trust. But the fire was extinguished. Cooling was restored. The point I am trying to make is that does not excuse deliberately inflating the issue into something it wasn't.

Don't try to tell me I'm not using common language understood by the "other folk." If you think making a major safety issue out of this event is clear communication, the problem is with your understanding of the words. I still believe the way to fight lies is with the truth. And that scares people who wouldn't know the truth from their ... elbow.

There is no "you guys" here. This post is my work and my position. I don't need a playbook or canned talking points. So debate me if you want to defend the liars. I challenge you to check some facts before you respond. It may be a stretch, but assume for a second that I'm telling truth. You might find it easier to prove that than that the NRC and Cooper and Ft Calhoun are all lying. Funny thing, if you assume most people are honest and telling the truth, it becomes easier to spot the few liars that are out there. If you believe everybody is lying, why do you believe those news reports?

 

[NUCENG]

NUCENG, would you clarify further what you mean by Japan being "so far behind on risk analysis"? Because I don't get it. Risk analysis for Japan is not something one can be "far behind on". History records quakes and tsunami. For Fuku, it would, at this stage, appear to have been a clear deliberate glossing over of risk instead, don't you think?

Also...is there still a controversy regarding Fuku in the "apparently" lax regulation in Japan? How so? I thought the lax regulation was now proven rather definitive. You know, with TEPCO, the Japanese gov. and regulators all looking out for one another.

As I undertand it NISA and the rest of the regulatory bodys in Japan heave endorsed a goal of moving to risk based regulation. Plants have done some analysis but apparently have not completed an IPEEE Individual Plant Examination of External Events like seismic, tsunami, fire, severe weather, etc. This would have been one more opportunity for TEPCO to see that the initiator of an earthquake and tsunami could lead to what happened.

As to lax regulation being proven, I at least think they came well short of being rigorous and independent regulators.

 

[Astronuc]

Omaha World-Herald - NRC: No flood danger at reactor
http://www.omaha.com/article/20110617/NEWS01/706179913/0#nrc-no-flood-danger-at-reactor

As for the fire in the switchgear, one would have to consider similar events in all types of plants for context. Is it extraordinary or significant at an NPP as opposed to a hydro or fossil fueled plant? I was working in a small oil/gas-fired generation plant back in the 70's when some switchgear arced. One can find numerous examples of such events at fossil-fueled plants.

Switchgear fires are one of many incidents that NPP staff must anticipate and plant to deal with. That's not necessarily the case for fossil plants.

See also this thread - https://www.physicsforums.com/showthread.php?t=339638

 

[Danuta]

As I undertand it NISA and the rest of the regulatory bodys in Japan heave endorsed a goal of moving to risk based regulation. Plants have done some analysis but apparently have not completed an IPEEE Individual Plant Examination of External Events like seismic, tsunami, fire, severe weather, etc. This would have been one more opportunity for TEPCO to see that the initiator of an earthquake and tsunami could lead to what happened.

As to lax regulation being proven, I at least think they came well short of being rigorous and independent regulators.

Okay. I see what you meant now.

 

[swl]

I know several people who work at the plant. They are very dedicated to their work, their families and their community.

The utility is expecting a peak river elevation of up to 1008.5 feet above sea level and has taken action to protect the switchyard and other capital assets from a greater flood.

I'm pleased to hear that the plant is operated by some good people that you recommend. I hope they will all have less trouble with mother nature than the operators at the Fukushima plant are having. Most of all, I hope they will be safe.

The article cited in the OP is pure crackpottery (link to article was deleted per PF Guidelines).

http://www.oppd.com/AboutUs/22_007105

Having not clicked the link prior to it's rightful deletion, I find it difficult to compare the veracity or bias of it's contents to those of the link you posted. I guess I'll just try to use my best judgement to filter out all the "crackpot" news on my own.

The plant is actually designed with greater flooding (1014 feet above mean sea level (MSL)) based on an upstream dam burst and additional rain locally.

That is very good to know. If you have a chance, would you mind posting a link to a place where we can find such information?

The utility is expecting a peak river elevation of up to 1008.5 feet above sea level and has taken action to protect the switchyard and other capital assets from a greater flood.

I hope their predictions of max water levels are better than the ones used when designing the Fukushima plant.

Furthermore, I hope that they continue to find all the leaks in the plants before they cause major problems, and before they are too numerous to handle simultaneously.

I understand that it would probably cost them millions of dollars, but do any of you know of any reason they should shut down the Cooper NPP until water levels are more normal? It seems like it would be better to have a great portion of the decay heat removed prior to serious flooding problems.

 

[Astronuc]

I understand that it would probably cost them millions of dollars, but do any of you know of any reason they should shut down the Cooper NPP until water levels are more normal? It seems like it would be better to have a great portion of the decay heat removed prior to serious flooding problems.

NPPs have mandatory restrictions based on safe operation of the plant as well as environmental restrictions. These are found in the plant FSAR or updated FSAR.

Plants on the Atlantic and Gulf coasts normally shutdown if there is a hurricane within a certain distance from the plant. Plants where flooding occur, such as those on the Mississippi and Missouri Rivers would go to standby or shutdown depending on the water level. Shutdown means that decay heat would be removed under normal procedures.

The plants are following normal procedures regarding shutdown. Ft. Calhoun was already shutdown, while Cooper has been operating. They will shutdown the plant if the flooding reaches a certain level. Meanwhile, they will monitor the flooding with the Corp of Engineers.

 

[SmalltownNuke]

Below are links to the National Weather Service's river prediction center. The gage at Blair, NE is a couple river miles north of the plant so be careful about making assumptions related to the elevation at the plant. It does provide a general outlook for the area. The gage nearest Cooper is the Brownville gage also linked below and the same care should be taken regarding exact elevation calculations.

Blair, NE (FCS)
http://water.weather.gov/ahps2/hydrograph.php?wfo=oax&gage=blan1&view=1,1,1,1,1,1,1,1%22

Brownville, NE (Cooper)
http://water.weather.gov/ahps2/hydrograph.php?wfo=oax&gage=bron1&view=1,1,1,1,1,1,1,1%22


The OPPD corporate blog contains some pictures and information. It is located here
http://www.oppdstorminfo.blogspot.com/

 

[Astronuc]

This is a nice little expose on the misrepresentation of the situation at Fort Calhoun.

Fort Calhoun - a flood of rumours from an unreliable source
http://world-nuclear.org/wna_buzz/fort_calhoun_fact_and_fiction.html.html

NUCENG cited the NOTAM in post #3.

 

[tsutsuji]

A comment about Fort Calhoun in Asian Week :

It’s said there’s a good 5 to 10 feet of additional margin, but the conspiracy folks may have a point that the dams upstream could suffer a catastrophic failure which could roll over the berms like the tsunami did at Fukushima.
http://www.asianweek.com/2011/06/17/debunking-gundersen-alex-jones-of-fukushima/

 

[NUCENG]

This is a nice little expose on the misrepresentation of the situation at Fort Calhoun.

Fort Calhoun - a flood of rumours from an unreliable source
http://world-nuclear.org/wna_buzz/fort_calhoun_fact_and_fiction.html

NUCENG cited the NOTAM in post #3.

Astronuc, I just spent a few minutes reading that original source website. Crackpot is an accurate term and I wonder if deleting that original site made it mysterious enough to lend it more credibility than it deserves. That site is hilarious.

 

[swl]

This is a nice little expose on the misrepresentation of the situation at Fort Calhoun.

Fort Calhoun - a flood of rumours from an unreliable source
http://world-nuclear.org/wna_buzz/fort_calhoun_fact_and_fiction.html

NUCENG cited the NOTAM in post #3.

The link you posted is broken, or inaccessible from my part of Japan.

Could you have been referring to this "expose"?

http://world-nuclear.org/blogtalkingpoints.aspx?id=30222&blogid=3402&terms=Fort%20Calhoun"

 

[Astronuc]

The link you posted is broken, or inaccessible from my part of Japan.

Could you have been referring to this "expose"?

http://world-nuclear.org/blogtalkingpoints.aspx?id=30222&blogid=3402&terms=Fort%20Calhoun"

Yes - that is the expose.

I fixed the link, but the alternate one may be better. The original link has an unusual .html.html in the url.

 

[desertlabs]

You push that point much too far in my opinion. As articles about nuclear issues go, that one isn't so bad, and even if there are some mistakes in it there is still much left worth thinking about.

Ageing reactors are a real issue, and is correct to look at this with some concern, and not to dismiss all but the most technical of talk on such matters as ill-informed fear-mongering.

There is always a balance to be struck between risk and reward, and ageing equipment may change this balance. Its very important that regulations are not being relaxed in order to maintain a balance on paper that does not reflect the full reality of the situation.

By all means deride and mock the most hysterical anti-nuclear nonsense, but take this too far and you'll actually end up adding to the lack of public trust. Public ignorance and media hysteria are reasons to open up more and dedicate even more energy towards maximum transparency and understanding.

Rational post.

 

[NUCENG]

Rational post.

From your brief post I assume you are talking about SteveElbow's post being rational. I agree eith you. But where he feels the news story didn't deserve my response, I disagreed. Jeff Donn. the author of the ASP story is part of a quote "Investigatory" team at AP. I have researched some of his previous articles and there is a clear trend of seeking out contoversy and writing stories that concentrate on the controversy for controversy sake.

While that approach sells papers and subscriptions to the AP service, it does not inform. It belongs in the category of an editorial. I expect to see a number of replies to the series "Aging Nukes," from industry and other sources, perhasps even NRC. In my post I only scratched the surface in thins that I believe were slanted, distorted, and ignored by the author.

If this is going much further, should we initiate a separate thread? This really isn't about the Nebraska plants. Mentors?

 

[tsutsuji]

The following NY Times article provides a good insight into the safety issues at Fort Calhoun and the interaction between the NRC and the plant operator : "A Nuclear Plant's Flood Defenses Trigger a Yearlong Regulatory Confrontation" By PETER BEHR of ClimateWire Published: June 24, 2011 http://www.nytimes.com/cwire/2011/0...defenses-trigger-a-ye-95418.html?pagewanted=1

Edit (sorry I meant the 24 June article not the 20 June article http://www.nytimes.com/2011/06/21/us/21flood.html?_r=1 as I previously wrote : I was confused with my bookmarks)

 

[BobG]

Astronuc's third document, http://pbadupws.nrc.gov/docs/ML1019/ML101970547.pdf, and this story, A Nuclear Plant's Flood Defenses Trigger a Yearlong Regulatory Confrontation suggest that OPPD and the NRC had some very interesting interactions with each other over the past year.

Apparently, OPPD didn't agree with the NRC's risk analysis (i.e. - the chance of a flood being higher than what Ft Calhoun had protected for) and the OPPD made almost facetious changes to their protection plan:

OPPD planned to extend the barrier to 1,014 feet by stacking sandbags on top of some steel floodgates that protected the auxiliary building, and to use more sandbags to safeguard the water intake structure and its essential cooling water pumps.

The NRC inspectors rejected that strategy. "The sandbagging activity would be insufficient," the NRC concluded in a July 15, 2010, letter to OPPD. The half-inch cross section on the top of the floodgates was too small to support a 5-foot stack of sandbags hit by swirling floodwaters, the agency said.

They seriously thought they could stack five feet of sandbags on top of a floodgate with a 1/2 inch cross-section? Astronuc's document talks about this, too, and the NRC inspectors requested a demonstration of this plan. I wish I could have been there for that. :rofl:

The AquaDam (which you can see in the picture in the original link) is an interesting solution. Usually, those are used for temporary construction projects, but I guess there is a certain flexibility in using them for flood protection. The barrier can be removed when it's not flood season (so the fact that the dam was installed just days before the flood may not indicate that they were lucky to avoid disaster).

 

[SmalltownNuke]

OPPD has made significant changes to their flood defenses between last fall and this summer. All of the floodgates that previously protected to 1009.5' msl (and that required "draped" sandbags) were replaced with new gates that protect to 1014'. The actual NEW procedures (post yellow finding from NRC) do not even call for the use of AquaDams. The AquaDams are there to provide additional protection from flood water.

OPPD also has a significant head start at decay heat removal due to the plant being shutdown since April 10th for a refueling outage. Astronuc may have to correct me, but I believe for that amount of time there is around 0.015% of rated power left as decay heat. Contrary to many claims online, OPPD utilizes dry cask storage so the spent fuel pool is NOT "overloaded" with spent fuel rods. There still is a sizable amount of decay heat, however it is orders of magnitude lower than what the pumps are designed for.

The electrical switchyard (offsite power) is protected by an earthen berm. Besides the two installed diesel generators, an additional industrial size generator was brought into provide greater defense in depth. Two additional LARGE fuel tanks (in addition to the 20,000+ gallons that are always stored onsite) were brought in for further safety margin.

While the plant may look scary on the news, always check the facts before trusting a journalist when it comes to anything nuclear related.

 

[swl]

While the plant may look scary on the news, always check the facts before trusting a journalist or a facetious plant operator when it comes to anything nuclear related.

Bold text mine.

Furthermore, it would be good operating practice to validate the efficacy of the flood control systems while the plant is shut down, rather than operating at 100% output.

 

[BobG]

While the plant may look scary on the news, always check the facts before trusting a journalist or a facetious plant operator when it comes to anything nuclear related.

Bold text mine.

Furthermore, it would be good operating practice to validate the efficacy of the flood control systems while the plant is shut down, rather than operating at 100% output.

I hope I didn't give the wrong impression. The plant operators risk analysis wasn't done in a facetious manner. They just disagreed so strongly with the NRC's risk assessment that they didn't put forth a good faith effort to increase the protection to the standards the NRC wanted until absolutely forced to.

And, for the record, the original protection system would have protected against this flood, which was the worst (or close to the worst) in the last century. But, I still think the NRC's goal (to protect against the severe floods that might happen once every 500 years) isn't being overly protective.

 

[swl]

The plant operators risk analysis wasn't done in a facetious manner. They just disagreed so strongly with the NRC's risk assessment that they didn't put forth a good faith effort to increase the protection to the standards the NRC wanted until absolutely forced to.

I find it interesting that they would not feel compelled to put forward a good faith effort to address the NRC observations.

In the pharmaceutical industry such gamesmanship could result in suspension of sales and product recall. In fact FDA inspectors could show up with guns and handcuffs ready to arrest the individuals responsible for toying with public welfare. Is this not the case with the NRC?

 

[zapperzero]

I find it interesting that they would not feel compelled to put forward a good faith effort to address the NRC observations.

In the pharmaceutical industry such gamesmanship could result in suspension of sales and product recall. In fact FDA inspectors could show up with guns and handcuffs ready to arrest the individuals responsible for toying with public welfare. Is this not the case with the NRC?

These are the companies that keep the lights on. If they feel their nuclear operations are over-regulated, and thus unprofitable, they could conceivably just shut them down and let the economy take the 10-20% hike in the price of electricity however it may. That's not a scenario any sane government is willing to entertain.

To make matters worse, these companies are de facto monopolies in their respective zones of operation, because of the inefficiencies involved in transmitting electricity over long distances. The lights-out scenario need not play at the national level at all.
http://en.wikipedia.org/wiki/Northeast_Blackout_of_2003

 

[robinson]

The berm failed, the plant is flooded and on emergency generators. External power lost.

 

[zapperzero]

The berm failed, the plant is flooded and on emergency generators. External power lost.

Source?
EDIT: Associated Press.
http://www.google.com/hostednews/ap/article/ALeqM5hwsIdVXW-V7xE60P0dUnI_qSIaIw?docId=252989d1dda94c1d83ee47ba8907e484

"The berm's collapse didn't affect the reactor shutdown cooling or the spent fuel pool cooling, but the power supply was cut after water surrounded the main electrical transformers, the NRC said. Emergency generators powered the plant until an off-site power supply was connected Sunday afternoon, according to OPPD."

 

[NUCENG]

A comment about Fort Calhoun in Asian Week :

When the water level downstream of the dam is higher than normal it would be logical that the differential pressure that could fail the dam would be lower that during non-flood conditions. So why would the dam be likely to fail now?