Alert level 4 the USA on a central Nebraska?

Humanitarian catastrophes (including resource wars and conflicts), natural, climate and industrial (except nuclear or oil forum fossil and nuclear energy). Pollution of the sea and oceans.
Christophe
Moderator
Moderator
posts: 79121
Registration: 10/02/03, 14:06
Location: Greenhouse planet
x 10973




by Christophe » 27/06/11, 14:13

Ay, the world is starting to talk about it?

A second power plant threatened by the rise of Missouri

Like residents preparing for a siege, workers at the Cooper nuclear power plant in Nebraska, United States, spent the weekend of June 25 and 26 fighting a natural enemy: the flood exceptional Missouri river, which has lasted since June 7 due to the torrential rains that hit the state following the melting of snow in the Rockies.


Anticipating rising sea levels, says the New York Times, the plant operator has stockpiled diesel, hydrogen or carbon dioxide to cope with a possible supply problem. He also erected barriers against water and secured the electric generators which are used in the event of an electrical system shutdown.

"UNUSUAL EVENT"

After a site visit on Sunday, June 26, the president of the American Nuclear Regulation Commission (NRC) wanted to be reassuring: "Up to now, the plant operator has followed the right approach. This plant is operating. by following the safety rules. "

But the complex continues to cause concern from the population, as does its neighbor from Fort Calhoun. Surrounded by water, 60 cm high during the peak of the flood, and victim of a fire in an electrical room, the latter had been the subject of rumors on the Internet about a level 4 nuclear accident.

While the NCR denies such a problem, the two facilities still suffer an "unusual event," a rating that corresponds to the lowest severity level on the US nuclear accident scale. The activity of the Cooper plant could be stopped, as was that of Fort Calhoun.
the Monde.fr


http://www.lemonde.fr/planete/article/2 ... _3244.html
0 x
User avatar
Flytox
Moderator
Moderator
posts: 14138
Registration: 13/02/07, 22:38
Location: Bayonne
x 839




by Flytox » 28/06/11, 19:48

http://fr.wikipedia.org/wiki/Centrale_n ... rt_Calhoun

View before the accident (Google Earth):

Image
0 x
Reason is the madness of the strongest. The reason for the less strong it is madness.
[Eugène Ionesco]
http://www.editions-harmattan.fr/index. ... te&no=4132
Christophe
Moderator
Moderator
posts: 79121
Registration: 10/02/03, 14:06
Location: Greenhouse planet
x 10973




by Christophe » 28/06/11, 23:54

Ah thank you Flytox, I think it is important to clarify this:

In June 2011, an exceptional flood flooded the Fort Calhoun power station, which is surrounded by the waters of Missouri. The reactor had been shutdown since April 9 to renew its nuclear fuel. On June 6, a directive from the Federal Aviation Administration prohibited flights within 2 miles (3,2 km) of the plant. [2]

On June 7, the flood caused an electrical fire, which briefly interrupted the cooling system for the 670 tonnes of spent fuel stored in a swimming pool. [3] Employees were evacuated for more than 3 hours [4].

The 8 June the accident is classified level 4, i.e. the 4th and lowest level of the American scale of nuclear accidents, and not of the scale INES


I thought it was on the INES ... according to me we would be 3 on that of the INES ...
0 x
dedeleco
Econologue expert
Econologue expert
posts: 9211
Registration: 16/01/10, 01:19
x 10




by dedeleco » 29/06/11, 01:04

In English more info and serious flooding on June 26 with collapse of the additional safety dike:
http://en.wikipedia.org/wiki/Fort_Calho ... ng_Station
http://www.google.com/hostednews/ap/art ... ba8907e484
http://articles.cnn.com/2011-06-26/us/n ... m?_s=PM:US

On June 26, at 1:30 am, a 8 feet (2.4 m) high, 2,000 feet (610 m) long flood berm surrounding portions of the plant, was punctured by a small earth mover ("Bobcat") and collapsed. [ 23] The flood berm was water-filled and its collapse allowed flood waters to surround the auxiliary and containment buildings at the plant, and also forced the temporary transfer of power from the external electricity grid to backup electrical generators. [4] It was reported more than 2 feet (0.61 m) of water rushed in around buildings and electrical transformers. [24] Backup generators were then used to ensure the facility maintained electrical power for cooling. [25] The rupturing of the flood berm also resulted in approximately 100 US gallons (380 l; 83 imp gal) of petroleum being released into the river as many fuel containers were washed out. The fuel / oil containers were staged around the facility to supply fuel for pumps which remove water within the flood containment barriers. [26] The rubber berm was a secondary measure not mandated by the NRC and was put in place by OPPD to provide additional room for work immediately outside the reactor buildings. [4]

According to OPPD, the plant is designed to withstand waters up to 1,014 feet above mean sea level. The river is not expected to exceed 1,008 feet. NRC officials were at the plant at the time and NRC statements said the plant remains safe. NRC Chairman Gregory Jaczko confirmed the plant's safety when he visited the plant on June 27.


Don't worry, the nuclear power plants are safe:
http://www.msnbc.msn.com/id/43540933
http://abcnews.go.com/US/minot-north-da ... PNheadline
Sleep on your two ears, nothing will happen !! :
"There is little to no chance of anything like Fukushima happening here," Nellenbach said.


But there is little safety margin (1m) before flooding the nuclear fuel storage pool and the flooding will last until August with the summer rains !!

US nuclear power plants have very little safety margin !!

In France Kif kif !!
0 x
Christophe
Moderator
Moderator
posts: 79121
Registration: 10/02/03, 14:06
Location: Greenhouse planet
x 10973




by Christophe » 29/06/11, 01:06

Boah ... if the pool is flooded, at least they will have no cooling problem! : Mrgreen: : Mrgreen:
0 x
User avatar
Flytox
Moderator
Moderator
posts: 14138
Registration: 13/02/07, 22:38
Location: Bayonne
x 839




by Flytox » 11/07/11, 21:56

http://www.gaia-chaos.com/2011/06/fukus ... aluel.html


- June 29, 2011: News that did not make the front page. Although the US media did not mention it, presumably out of oblivion, it is a compulsory evacuation zone of 16 km that has been decreed around the Fort Calhoun nuclear power plant. Just in case since there is no danger for the population. Last minute: it's official, ABC talked about it with a bonus a little report.
0 x
Reason is the madness of the strongest. The reason for the less strong it is madness.

[Eugène Ionesco]

http://www.editions-harmattan.fr/index. ... te&no=4132
dedeleco
Econologue expert
Econologue expert
posts: 9211
Registration: 16/01/10, 01:19
x 10




by dedeleco » 12/07/11, 00:56

But no, you dreamed !!

http://panier-de-crabes.over-blog.com/a ... 63130.html
http://bistrobarblog.blogspot.com/2011/ ... rnant.html
ABC News Says It Mistaken To Report Fort Calhoun Evacuation And Calls For Article Removal From Internet


The 10 Miles are the basic planned evacuation zone in the event of a serious incident in the USA, in Fort Calhoun, it does not matter !!! that too much water around !!!
0 x
User avatar
Flytox
Moderator
Moderator
posts: 14138
Registration: 13/02/07, 22:38
Location: Bayonne
x 839




by Flytox » 12/07/11, 21:44

http://www.agoravox.fr/actualites/inter ... -sur-97038


Fort Calhoun: reactor on emergency generator on Sunday

The intrusion of water into certain buildings of the Fort Calhoun power plant forced the power plant to switch briefly to emergency power supply on Sunday, according to the Homaha World Herald.

http://www.omaha.com/article/20110627/N ... nuke-plant

The diesel generators have been successfully started to alleviate difficulties in supplying the power plant with electricity via the electricity network.

As in Fukushima, the cooling system of the power plant depends on the constant supply of electricity.

In addition, several explosions have created breaches on dikes upstream from the flooded nuclear power plant at Fort Calhoun in the USA.

The rupture of these dikes caused the previously protected cornfields to flood.

Government officials initially denied being behind the blasts, and suggest that angry farmers are suspected, but on Friday, emergency operations coordinator Jeff Theulen said the dikes may have be intentionally broken.

Indeed, a body of engineers from the US army had been working to level these dikes for a week. This work also resulted in the death of a driver whose truck fell from the dike.

Thus the private dyke of Vanmann n ° 30 located north of the Boyer Chute nature reserve was first excavated by the army before a breach was opened by explosives.

Two other breaches also caused the flooding of crop areas on this portion of the river.

The flooding of the plain by the rupture of agricultural dikes is obviously an attempt to create reservoirs upstream of the powerhouse in order to limit the flood in the main bed of the Missouri river.

In France we use to regulate floods what hydrometric engineers call passive flood clipping reservoirs which are flood zones whose definition is:

Passive flood capping works, to be placed in a small catchment area, with the objective of limiting the importance of floods downstream of this basin.

The principle is that of communicating vessels: above a certain level, the water overflows from the river bed to the reservoir, which moderates the flood in the river bed.

This is undoubtedly the reason why the army lowered the height of the dikes upstream of the river, the idea being that if the level still rises the fields receive the excess of water.

The decision to break the dikes shows that concern has escalated and that the authorities have switched to an emergency mode of action which was no longer intended to limit the peak of the flood but to lower the water level.

The situation seems more worrying than the nuclear authorities say, as implicitly confirmed by the evacuation of residents in an area of ​​15 km around the power plant (and the overflight ban) which represents more than 20.000 people.

Another indication is the decision taken by the nuclear authorities to lower the temperature of the water in the reactor considerably below the usual standards in order to have more time in the event of a breakdown of the cooling system.

The water is 308 m above sea level.
The alert level (307,85 m) requiring the plant to be shut down was exceeded on June 9.

We officially expect a rise of 60 cm which approaches the limit of 309 m above sea level.

At this level, the sandbag embankment surrounding the area of ​​infrastructure connecting the power plant to the power grid could fail, which would likely result in the power plant being cut off from the power grid as happened in Fukushima.

The cooling system of the plant will then depend on the diesel generator sets that were started on Sunday.

However, these generators are only supposed to withstand a flood of 309m above sea level.

If the water rises even higher, secondary generators could take over up to a flood of 316.5 m.

These calculations do not take into account the damage that water can cause by erosion or pressure on the walls in the long run because the flood will not be expected before long months.

The crisis is therefore only just beginning.

No need to panic, in case of problem, it will suffice to apply the good old Duck & Cover method (dive & cover):
0 x
Reason is the madness of the strongest. The reason for the less strong it is madness.

[Eugène Ionesco]

http://www.editions-harmattan.fr/index. ... te&no=4132
dedeleco
Econologue expert
Econologue expert
posts: 9211
Registration: 16/01/10, 01:19
x 10




by dedeleco » 12/07/11, 23:00

Flytox presents news from
Published Monday June 27, 2011


http://www.omaha.com/article/20110627/N ... nuke-plant
fortunately the situation has not worsened since with explosions like in Fukushima !!!


The latest news from this huge flood that never stops, because in nearly 3000Km the Missouri and Mississippi descend from 310m, an almost zero slope !!!!
http://www.omaha.com/article/20110606/N ... ng-archive
http://www.omaha.com/article/20110712/N ... 29935/1003
0 x
User avatar
Flytox
Moderator
Moderator
posts: 14138
Registration: 13/02/07, 22:38
Location: Bayonne
x 839




by Flytox » 21/11/11, 22:49

http://www.agoravox.fr/actualites/envir ... ale-100408

Safety note for Fort Calhoun power plant lowered

On September 7, 2011, the plant received the lowest score on the nuclear safety scale by the Nuclear Regulatory Commission. The Missouri has returned to its bed, but the plant will not restart soon.

It was the soap opera of the summer in the USA: the Fort Calhoun nuclear power plant, in the middle of the reactor recharging phase, had to cancel its return to service, initially scheduled for May 2011, because of the rising waters of Missouri.

JPEG - 21.2 ko

The power station, transformed into an island, had first been protected by an inflatable dam, which had failed on June 26, causing the partial flooding of the pumping building of the reactor cooling circuit fortunately without causing its shutdown.

A rupture in a cement wall had led to the flooding of the main transformer, cutting the power plant from the power grid and forcing it to switch to emergency generators.

Fortunately, the waters of Missouri withdrew from the site without worsening the situation, and the flood alert was lifted on August 29.

However, restarting the plant is not possible before a check by the American nuclear safety agency, the NRC.

In fact, the NRC assessed the safety status of the power plant and lowered the Fort Calhoun rating by one “column”, which gives it the penultimate lowest rating on the safety scale in force in the USA .

From the central is classified as "Multiple / Repetitive Degraded Safety Cornerstone". (multiple / repeated degradation of the safety bases).

No restart is possible before the NRC gives the green light, conditioned on the execution of a series of security works prior to a return to the upper "column".

The points called into question by the safety commission concerned two aspects: a faulty electrical service provider (problem of subcontracting?) And the risks of flooding (sic).

The managers of the plant say that the work has already been done and say they are confident.
0 x
Reason is the madness of the strongest. The reason for the less strong it is madness.

[Eugène Ionesco]

http://www.editions-harmattan.fr/index. ... te&no=4132

Back to "humanitarian disasters, natural, climatic and industrial"

Who is online ?

Users browsing this forum : No registered users and 105 guests