Windscale-Brand – Wikipedia. Sellafield liegt in der Nähe des Städtchens Seascale an der Irischen See. Die Anlage hat in den vergangenen sechs Jahrzehnten einen zweifelhaften Ruf. Die Wiederaufarbeitungsanlage Sellafield ist ein schleichendes Tschernobyl. Das Unglück in dem ukrainischen Atomkraftwerk hat die ganze Welt erschüttert.
Sellafield Weitere exklusive Plus-Artikel
Sellafield (früher Windscale) ist ein britischer Nuklearkomplex an der Irischen See in der Grafschaft Cumbria in Nordwestengland. Der River Ehen mündet am. Windscale-Brand – Wikipedia. Castor-Transport aus Sellafield: Schiff mit Atommüll erreicht Nordenham. Timo Ebbers. Die mit sechs Castoren beladene „Pacific Grebe“ hat. Die Wiederaufarbeitungsanlage Sellafield ist ein schleichendes Tschernobyl. Das Unglück in dem ukrainischen Atomkraftwerk hat die ganze Welt erschüttert. Der Transport von hochradioaktiven Atommüll von Sellafield nach Biblis findet trotz Coronapandemie statt. Kritischer, unabhängiger Journalismus der linken Nachrichtenseite taz: Analysen, Hintergründe, Kommentare, Interviews, Reportagen. Genossenschaft seit. Die Ausbreitung der seit praktizierten Sellafield-Einleitungen vollzogen sie in der Karasee mit den höchsten Sellafield-Konzentrationen in der Nordsee.
Windscale-Brand – Wikipedia. Kritischer, unabhängiger Journalismus der linken Nachrichtenseite taz: Analysen, Hintergründe, Kommentare, Interviews, Reportagen. Genossenschaft seit. Der Transport von hochradioaktiven Atommüll von Sellafield nach Biblis findet trotz Coronapandemie statt. Nuclear Engineering International. These changes triggered further warnings from the technical staff, which were again brushed aside. Customers range from Government Cars 2 the NDA to site licence companies, utilities, nuclear specialists and universities. Archived from the original The Man Who Wasn’T There Scholar search on 13 March What were you doing? Learn More Industrial month and Summer 10 Lesley-Anne Down placement opportunities for our intake are now open for applications. Views Read Edit View history. The Independent.
Sellafield Navigationsmenü VideoBritain's Nuclear Secrets: Inside Sellafield (Nuclear Energy Documentary) - Timeline
Read more about what we do. During the coronavirus COVID pandemic, we will endeavour to answer all personal information requests within statutory time limits.
However, during this time resources may be diverted elsewhere, resulting in a delay in providing you with the information requested.
We will answer your requests as soon as possible and endeavour to keep you updated. Contact the supply chain team with any questions and comments about doing business with Sellafield Ltd, including procurement.
Contact Stakeholder Relations if you have any questions about our activities at Sellafield or the impact of them on the community.
In the event of an emergency at Sellafield, please contact our information line for further details.
Administration sellafieldsites. Team sellafieldsites. Management sellafieldsites. Changes to absence reporting - 24 March Please visit the staff news and information area for more information.
However, there may be delays due to the affects of the pandemic so please bear with us, we will answer your requests as soon as possible and endeavour to keep you updated.
If you need further advice on your request please call or Read about the types of information we routinely publish in our Publication scheme.
Accept all cookies. Set cookie preferences. Home Organisations. Supporting those affected by domestic violence 29 October — News story. Sellafield Ltd investment in education and skills 23 October — News story.
The next generation show they CanDo community support 8 October — Press release. Sellafield Ltd: Still leading the conversation on the international stage 15 October — News story.
Latest from Sellafield Ltd. What Sellafield Ltd does. News and communications Supporting those affected by domestic violence 29 October News story Shipment of high level waste from the UK to Germany - October 28 October News story See all news and communications.
Our management. Martin Chown. Lorraine Baldry OBE. Andrew Carr. Dr Rebecca Weston. Euan Hutton. Mark Neate.
Steve Bostock. Neil Crewdson. Susan Lussem. Gaenor Prest. Nach Darstellung der EU-Kommission sind in Sellafield wegen der unfallbedingt hohen Radioaktivität und schlechter Sichtverhältnisse Kontrollen in der Anlage nicht möglich.
Juli verkündet. Der Rückbau der Wiederaufbereitungsanlage soll bis zum Jahr dauern und etwa Mrd. Pfund kosten. Auf dem Gelände befinden sich zahlreiche kerntechnische Anlagen.
Die wichtigsten sind:. Das Kernkraftwerk Sellafield hat einen Kraftwerksblock :. Vor allem die Wiederaufarbeitungsanlagen sind wegen ihrer Einleitungen von radioaktiven Stoffen in die Irische See umstritten.
Die Kontamination der unmittelbaren Umgebung von Sellafield wird in manchen Quellen mit der gesperrten Zone um Tschernobyl verglichen, was sich auch in staatlichen Protesten u.
Unter anderem konnte die Einleitung des Isotops Technetium durch ein neues Abtrennverfahren fast vollständig beendet werden.
Die Kosten der Stilllegung der Anlage bis wurde von der Rechnungsprüfungskommission im britischen Unterhaus auf 67,5 Mrd.
Pfund Sterling 78 Mrd. Euro geschätzt. Anfang November wurde bekannt, dass seit 40 Jahren abgebrannte Brennelemente in nicht überdachten Abklingbecken unter freiem Himmel gelagert werden.
Da sich an diesen Becken Vögel aufhalten und diese verstrahlt werden können, werden Vögel über dem Gelände abgeschossen und eingelagert.
The UK government played down the events at the time and reports on the fire were subject to heavy censorship, as Prime Minister Harold Macmillan feared the incident would harm British-American nuclear relations.
The event was not an isolated incident; there had been a series of radioactive discharges from the piles in the years leading up to the accident.
A study of workers involved in the cleanup of the accident found no significant long term health effects from their involvement.
The December discovery of nuclear fission by Otto Hahn and Fritz Strassmann —and its explanation and naming by Lise Meitner and Otto Frisch —raised the possibility that an extremely powerful atomic bomb could be created.
After the war ended, the Special Relationship between Britain and the United States "became very much less special". Its control of "restricted data" prevented the United States' allies from receiving any information.
This raised the possibility that Britain might have to fight an aggressor alone. Through their participation in the wartime Tube Alloys and Manhattan Project, British scientists had considerable knowledge of the production of fissile materials.
The Americans had created two kinds: uranium and plutonium , and had pursued three different methods of uranium enrichment.
While everyone would have liked to pursue every avenue, like the Americans had, it was doubtful whether the cash-strapped post-war British economy could afford the money or the skilled manpower that this would require.
The scientists who had remained in Britain favoured uranium, but those who had been working in America were strongly in favour of plutonium.
They estimated that a uranium bomb would require ten times the fissile material as one using plutonium to produce half the TNT equivalent. Estimates of the cost of nuclear reactors varied, but it was reckoned that a uranium enrichment plant would cost ten times as much to produce the same number of atomic bombs as a reactor.
The decision was therefore taken in favour of plutonium. The reactors were built in a short time near the village of Seascale , Cumberland. They were known as Windscale Pile 1 and Pile 2, housed in large concrete buildings a few hundred feet apart.
The core of the reactors consisted of a large block of graphite with horizontal channels drilled through it for the fuel cartridges. The cartridge was finned, allowing heat exchange with the environment to cool the fuel rods while they were in the reactor.
Rods were pushed in the front of the core, the "charge face", with new rods being added at a calculated rate.
This pushed the other cartridges in the channel towards the rear of the reactor, eventually causing them to fall out the back, the "discharge face", into a water-filled channel where they cooled and could be collected.
As this plutonium was intended for weapons purposes , the burnup of the fuel would have been kept low to reduce production of the heavier plutonium isotopes like plutonium and plutonium The design initially called for the core to be cooled like the B Reactor , which used a constant supply of water that poured through the channels in the graphite.
There was considerable concern that such a system was subject to catastrophic failure in the event of a loss-of-coolant accident. This would cause the reactor to run out of control in seconds, potentially exploding.
At Hanford , this possibility was dealt with by constructing a mile km escape road to evacuate the staff were this to occur, abandoning the site.
In place of water, they used air cooling driven by convection through a foot m tall chimney, which could create enough airflow to cool the reactor under normal operating conditions.
The chimney was arranged so it pulled air through the channels in the core, cooling the fuel via fins on the cartridges. For additional cooling, huge fans were positioned in front of the core, which could greatly increase the airflow rate.
During construction, Terence Price, one of the many physicists working on the project, began to consider what would happen if one of the fuel cartridges being pushed out the back of the core were to break open.
This could happen, for example, if a new cartridge being inserted was pushed too hard, causing the one at the back of the channel to fall past the relatively narrow water channel and strike the floor behind it.
In that event, the hot uranium could catch fire, with the fine uranium oxide dust being blown up the chimney to escape. Sir John Cockcroft , leading the project team, was alarmed enough to order that filters be installed, which required them to be constructed on the ground while the chimneys were still being built, and then winched into position at the top once the chimney's concrete had set.
In the end, Price's concerns came to pass. So many cartridges missed the water channel that it became routine for staff to walk through the chimney ductwork with shovels and scoop the cartridges back into the water.
Once commissioned and settled into operations, Pile 2 experienced a mysterious rise in core temperature. Unlike the Americans and the Soviets, the British had little experience with the behaviour of graphite when exposed to neutrons.
Hungarian-American physicist Eugene Wigner had discovered that graphite, when bombarded by neutrons, suffers dislocations in its crystalline structure, causing a build-up of potential energy.
This energy, if allowed to accumulate, could escape spontaneously in a powerful rush of heat. The Americans had long warned about this problem, and had even warned that such a discharge could lead to a fire in the reactor.
The sudden bursts of energy worried the operators, who turned to the only viable solution, heating the reactor core in a process known as annealing.
This process was gradual and caused a uniform release which spread throughout the core. Winston Churchill publicly committed the UK to building a hydrogen bomb , and gave the scientists a tight schedule in which to do so.
This was then hastened after the US and USSR began working on a test ban and possible disarmament agreements which would begin to take effect in To meet this deadline there was no chance of building a new reactor to produce the required tritium , so the Windscale Pile 1 fuel loads were modified by adding enriched uranium and lithium - magnesium , the latter of which would produce tritium during neutron bombardment.
These concerns were brushed aside. When their first H-bomb test failed, the decision was made to build a large fusion-boosted-fission weapon instead.
This required huge quantities of tritium, five times as much, and it had to be produced as rapidly as possible as the test deadlines approached. To boost the production rates, they used a trick that had been successful in increasing plutonium production in the past; by reducing the size of the cooling fins on the fuel cartridges, the temperature of the fuel loads increased, which caused a small but useful increase in neutron enrichment rates.
This time they also took advantage of the smaller fins by building larger interiors in the cartridges, allowing more fuel in each one. These changes triggered further warnings from the technical staff, which were again brushed aside.
Christopher Hinton , Windscale's director, left in frustration. After a first successful production run of tritium in Pile 1, the heat problem was presumed to be negligible and full-scale production began.
But by raising the temperature of the reactor beyond the design specifications, the scientists had altered the normal distribution of heat in the core, causing hot spots to develop in Pile 1.
These were not detected because the thermocouples used to measure the core temperatures were positioned based on the original heat distribution design, and were not measuring the parts of the reactor which became hottest.
On 7 October operators of Pile 1 noticed that the reactor was heating up more than normal, and a Wigner release was ordered. During this attempt the temperatures anomalously began falling across the reactor core, except in channel , whose temperature was rising.
This attempt caused the temperature of the entire reactor to rise, indicating a successful release. Early in the morning of 10 October it was suspected that something unusual was going on.
The temperature in the core was supposed to gradually fall as Wigner energy release ended, but the monitoring equipment showed something more ambiguous, and one thermocouple indicated that core temperature was instead rising.
In an effort to cool the pile, the cooling fans were sped up and airflow was increased. Radiation detectors in the chimney then indicated a release, and it was assumed that a cartridge had burst.
This was not a fatal problem, and had happened in the past. However, unknown to the operators, the cartridge had not just burst, but caught fire, and this was the source of the anomalous heating in channel , not a Wigner release.
Speeding up the fans increased the airflow in the channel, fanning the flames. The fire spread to surrounding fuel channels, and soon the radioactivity in the chimney was rapidly increasing.
The core temperature continued to rise, and the operators began to suspect the core was on fire. Operators tried to examine the pile with a remote scanner but it had jammed.
Tom Hughes, second in command to the Reactor Manager, suggested examining the reactor personally and so he and another operator went to the charge face of the reactor, clad in protective gear.
A fuel channel inspection plug was taken out close to a thermocouple registering high temperatures and it was then that the operators saw that the fuel was red hot.
There was now no doubt that the reactor was on fire, and had been for almost 48 hours. Reactor Manager Tom Tuohy  donned full protective equipment and breathing apparatus and scaled the foot m ladder to the top of the reactor building, where he stood atop the reactor lid to examine the rear of the reactor, the discharge face.
By doing so, he was risking his life by exposing himself to a large amount of radiation. Nigel Smith. Anne-Marie Choho. David Vineall. Alan Cumming.
Contact Sellafield Ltd General enquiries Switchboard Mike Gater - Data Protection enquiries Email data. Telephone - select 3, then option 4 Mobile Careers Email nsbs.
Telephone extension 1. Supply Chain enquiries Email supply. Stakeholder Relations Email howard. Telephone Stakeholder Relations Email rosina.
Matt Legg, Media Manager Email matt. Telephone Mobile Ben Chilton, Media Officer Email benjamin.
Sellafield Ltd Information Line Telephone - Calls will cost 57 pence per minute from a landline. Emergency information Information line Make a new request by contacting us using the details below.
Government Relations Officer Corporate information Office access and opening times Accessible documents policy Media enquiries Our governance.
Is this page useful? Maybe Yes this page is useful No this page is not useful. Thank you for your feedback. There is something wrong with this page.
What were you doing? Juli verkündet. Der Rückbau der Wiederaufbereitungsanlage soll bis zum Jahr dauern und etwa Mrd. Pfund kosten.
Auf dem Gelände befinden sich zahlreiche kerntechnische Anlagen. Die wichtigsten sind:. Das Kernkraftwerk Sellafield hat einen Kraftwerksblock :.
Vor allem die Wiederaufarbeitungsanlagen sind wegen ihrer Einleitungen von radioaktiven Stoffen in die Irische See umstritten.
Die Kontamination der unmittelbaren Umgebung von Sellafield wird in manchen Quellen mit der gesperrten Zone um Tschernobyl verglichen, was sich auch in staatlichen Protesten u.
Unter anderem konnte die Einleitung des Isotops Technetium durch ein neues Abtrennverfahren fast vollständig beendet werden. Die Kosten der Stilllegung der Anlage bis wurde von der Rechnungsprüfungskommission im britischen Unterhaus auf 67,5 Mrd.Anmelden Abmelden. Antwort auf Jarred Blancard von r. Bisher unbekannte Krebsarten treten immer häufiger auf. Die Atomindustrie ist so transparent wie eine Betonwand. Eine Gefährdung der Bevölkerung oder der Meeresumwelt aus diesen Quellen ist auch in Zukunft nicht zu erwarten. Zudem wurde der radioaktive Schlamm aus den durch den Brand stark kontaminierten Wasserkanälen zum Abklingbecken entfernt. Die Erweiterte Suche können Sie auch nutzen, ohne Suchbegriffe einzugeben. Mit der Planung der ersten Phase des Abbaues wurde Ende der er begonnen und die Arbeit aufgenommen. Oktober begannen die Adam Rayner mit dem Ausheizvorgangder nach drei Tagen abgeschlossen sein sollte.