potenial core meltdowns in Europe

The cooling water is heated in:

Country Reactor Since Temperature in Degrees Celsius
Slovakia Bohunice-3 1991 ca. 55
Slovakia Mochovce-1 1998 n.a
Czech Republic Temelin-1 2000 55-60
Czech Republic Dukovany-1 1992 55-60

If you are no longer sure whether the reactor pressure vessel can withstand the emergency cooling water at normal temperature, then one should be alarmed.’

 

There are at least 18 active nuclear reactors in the Czech Republic, Belgium, France, Finland and Slovakia with problems regarding the stability of the reactor pressure vessels. Research conducted by WDR and ‘Süddeutscher Zeitung’ (SZ), the emergency cooling water is preheated to a temperature of up to 60 degrees Celsius with the intend to reduce the risk of a breaking steel reactor pressure vessel when cooled with cold water which could result in a core meltdown.

https://www.tagesschau.de/ausland/bruechige-reaktoren-101.html

 

vienna-mochovce

vienna-bohunice

linz-temelin

linz-dukovany

Japan.nuclear power

Japan still considering total nuclear power pullout

PARIS, Oct. 18, 2011 (Reuters) — Japan has not ruled out the possibility of complete closure of its nuclear power stations as one option for the country’s future energy policy after the world’s worst nuclear accident in 25 years, economy minister Yukio Edano said…

…Public concern about safety leapt after the Fukushima accident, which forced 80,000 people from their homes and sparked fears about food and water supply. Some 70 percent of voters polled in July backed Kan’s call to phase out nuclear plants….

www.newsdaily.com

Britain. nuclear reactor

Europe’s oldest nuclear reactor to close early

By Karolin SchapsPosted 2011/10/21 at 11:32 am EDT

LONDON, Oct. 21, 2011 (Reuters) — Europe’s oldest nuclear reactor at Britain’s Oldbury power station will close down 10 months earlier than expected in February next year after operator Magnox decided that running the 44-year-old reactor was no longer economically viable….
www.newsdaily.com

New Analysis. Global Warming

Major New Analysis Confirms That Global Warming Is Real
http://www.sciencedaily.com/

Comparison of data showing decadal land-surface average world temperature changes from 15 different sources, some going back as far as 1800. (Credit: Image courtesy of Berkeley Earth Surface Temperature)

http://www.sciencedaily.com/images/2011/10/111021144716-large.jpg

Small Earthquakes Can Trigger Larger Ones.NPP.AKWs

Evidence That Small Earthquakes Can Trigger Larger Ones – 2001JB00091

Triggering of the 1999 MW 7.1 Hector Mine earthquake by aftershocks of the 1992 MW 7.3 Landers earthquake

Karen R. Felzer

Department of Earth and Planetary Sciences, Harvard University, Cambridge, Massachusetts, USA

Thorsten W. Becker

Department of Earth and Planetary Sciences, Harvard University, Cambridge, Massachusetts, USA

Rachel E. Abercrombie

Department of Earth and Planetary Sciences, Harvard University, Cambridge, Massachusetts, USA

Göran Ekström

Department of Earth and Planetary Sciences, Harvard University, Cambridge, Massachusetts, USA

James R. Rice

Department of Earth and Planetary Sciences, Harvard University, Cambridge, Massachusetts, USA

There is strong observational evidence that the 1999 MW 7.1 Hector Mine earthquake in the Mojave Desert, California, was triggered by the nearby 1992 MW 7.3 Landers earthquake. Many authors have proposed that the Landers earthquake directly stressed the Hector Mine fault. Our model of the Landers aftershock sequence, however, suggests there is an 85% chance that the Hector Mine hypocenter was actually triggered by a chain of smaller earthquakes that was initiated by the Landers main shock. We perform our model simulations using the Monte Carlo method based on the Gutenberg-Richter relationship, Omori’s law, Båth’s law, and assumptions that all earthquakes, including aftershocks, are capable of producing aftershocks and that aftershocks produce their own aftershocks at the same rate that other earthquakes do. In general, our simulations show that if it has been more than several days since an M ≥ 7 main shock, most new aftershocks will be the result of secondary triggering. These secondary aftershocks are not physically constrained to occur where the original main shock increased stress. This may explain the significant fraction of aftershocks that have been found to occur in main shock stress shadows in static Coulomb stress triggering studies.

http://www.agu.org/pubs/crossref/2002/2001JB000911.shtml

AKW-Stresstest der IPPNW

Deutsche Sektion der Internationalen Ärzte für die Verhütung des Atomkrieges

Ärzte in sozialer Verantwortung e.V. (IPPNW)

AKW-Stresstest der IPPNW

www.ippnw.de

Der AKW-Stresstest der IPPNW umfasst die folgenden Thematiken:

1. Schutz gegen Erdbeben, Flugzeugabsturz, Beschuss

2. Schutz gegen extreme Wetterereignisse

3. Interne redundanzübergreifende Ereignisse

4. Verbesserte Notstandssysteme

5. Notfallmaßnahmen

6. Kernschmelzfestigkeit

7. Kühlsysteme

8. Stromversorgung

9. Abschaltsysteme

10. Messwerterfassung, Leittechnik und Reaktorschutz

11. Werkstoffe, konstruktive Ausführungen, Schweißnähte

12. Zusätzliche Barrieren gegen Freisetzungen von Radioaktivität

13. Verschiedenes

AKW Schutz gegen Erdbeben, Flugzeugabsturz, Beschuß, ..
AKW Schutz gegen Erdbeben, Flugzeugabsturz, Beschuß, ..

Atomenergie und Datenfälschung – Nuclear Power and fraud

29. August 2002, 17 TEPCO Reaktoren (Japan) (siehe 9.2.9.3)

Die Tokyo Electric Power Company (TEPCO) betreibt 17 Siedewasserreaktoren und
war eine der respektiertesten  großen Firmen in Japan. Am 29. August 2002 schockierte die
Japanische   Aufsichtsbehörde  NISA   (Nuclear   Industrial   Safety   Agency)   die   Nation   mit   der
öffentlichen   Enthüllung   eines      massiven     Datenfälschungsskandals         bei  TEPCO.      Zu  diesem
Zeitpunkt waren 29 Fälle von Manipulation bekannt geworden, einschließlich der Fälschung
der vom Betreiber sich selbst auferlegten Inspektionsdaten aus seinen Atomkraftwerken über
viele   Jahre   hinweg.   In   der   Folge   mussten   alle   17   TEPCO   Reaktoren   für   Inspektionen   und
Reparaturen abgeschaltet werden. Später stellte sich heraus, dass diese Praktiken mindestens
bis   zu   25 Jahre   lang   gang   und   gebe   waren.   Die   Gesamtzahl   der   Ereignisse   wird   auf   bisher
knapp 200 beziffert. Doch Enthüllungen von Vertuschungen und Manipulationen haben sich
auf alle großen Atomkraftwerksbetreiber in Japan ausgeweitet und reißen nicht ab. Im zuletzt
im April 2007 bekannt gewordenen Fall, gab der Betreiber Hokuriku Electric zu, dass vor fast
acht Jahren ein Kritikalitätszwischenfall in seinem Shika-1 Siedewasserreaktor stattgefunden
hat.

29 August 2002, 17 TEPCO Reactors (Japan) (see 9.2.9.3)

The Tokyo Electric Power Company (TEPCO) operates 17 boiling water reactors and was
also one of the most respected large companies in Japan. On 29 August 2002 the Japanese Nuclear
Industrial Safety Agency (NISA), shocked the nation with the public revelation of a massive data
falsification  scandal  at  TEPCO.  At  that  point   29  cases  of  “malpractice”  had  been   identified,
including the  falsification of the  operator’s self-imposed inspection records at its nuclear power
plants  over  many  years. In  the  follow-up,  all  of  the 17 TEPCO units had  to be  shut  down  for
inspection and repair. It was reported later that these practices had gone on for as long as 25 years

and the total number of events is put at nearly 200 so far. However, revelations of cover-ups andmalpractice  have  extended  to  all  major nuclear  operators  in  Japan  and  continue to   date. In  the
latest case, in early April 2007 Hokuriku Electric has admitted to a criticality incident at its Shika-
1 boiling water reactor. The event had been covered up for almost eight years.

http://www.greens-efa.eu/

182166restrisiko_zusammenfassung_und_schlussfolgerungen

182164residual_risk_summary_and_conclusions

Radiation in Japan: Radioactive Cesium from Urine Samples of 10 Children in Fukushima City

Wednesday, June 29, 2011

http://ex-skf.blogspot.com/2011/06/radiation-in-japan-radioactive-cesium_29.html

#Radiation in Japan: Radioactive Cesium from Urine Samples of 10 Children in Fukushima City

From Sankei Shinbun (6/30/2011):

A citizens’ group in Fukushima Prefecture “Fukushima Network to Protect Children from Radiation” tested the urine samples from 10 children in Fukushima City, age 6 to 16, and announced on June 30 that a small amount of radioactive materials was detected from all samples.

The highest amount of cesium-134 was from an 8-year-old girl, at 1.13 becquerels per liter. The highest amount of cesium-137 was from a 7-year-old boy, at 1.30 becquerels per liter.

The samples were taken in late May, and sent to the French laboratory ACRO (Association pour le Contrôle de la Radioactivité dans l’Ouest) to testing for radiation. ACRO has experience in surveying the radiation exposure in children after the Chernobyl accident.

ACRO’s president David Boilley said in the press conference, “There is a very high possibility that children in and around Fukushima City have been exposed to internal radiation. Prior to the [Fukushima] accident, these numbers would have been zero.”

nuclear power plants and cancer before 5th birthday

Schlussfolgerung

Unsere Studie hat bestätigt, dass in Deutschland ein Zusammenhang zwischen der

Nähe der Wohnung zum nächstgelegenen Kernkraftwerk zum Zeitpunkt der Diagno-

se und dem Risiko, vor dem 5. Geburtstag an Krebs (bzw. Leukämie) zu erkranken,

beobachtet wird. Diese Studie kann keine Aussage darüber machen, durch welche

biologischen Risikofaktoren diese Beziehung zu erklären ist. Die Exposition gegen-

über ionisierender Strahlung wurde weder gemessen noch modelliert. Obwohl frühe-

re Ergebnisse mit der aktuellen Studie reproduziert werden konnten, kann aufgrund

des   aktuellen   strahlenbiologischen   und   -epidemiologischen   Wissens   die   von   deut-

schen Kernkraftwerken im Normalbetrieb emittierte ionisierende Strahlung grundsätz-

lich nicht als Ursache interpretiert werden. Ob Confounder, Selektion oder Zufall bei

dem   beobachteten   Abstandstrend   eine   Rolle   spielen,  kann   mit   dieser   Studie   nicht

abschließend geklärt werden.

Umweltforschungsplan des
Bundesumweltministeriums
(UFOPLAN)

Reaktorsicherheit und Strahlenschutz

Vorhaben StSch 4334:
Epidemiologische Studie zu Kinderkrebs in der
Umgebung von Kernkraftwerken (KiKK-Studie)

Zusammenfassung/Summary

Peter Kaatsch
Claudia Spix
Sven Schmiedel
Renate Schulze-Rath
Andreas Mergenthaler
Maria Blettner

Im Auftrag des Bundesministeriums für Umwelt, Naturschutz und
Reaktorsicherheit und des Bundesamtes für Strahlenschutz

Conclusions

The   present   study   confirms   that   in   Germany   there   is   a   correlation   between   the
distance of the home from the nearest NPP at the time of diagnosis and the risk of
developing cancer (or leukaemia) before the 5th birthday. This study is not able to

state    which     biological    risk  factors    could    explain    this  relationship.     Exposure      to
ionising radiation was not measured nor modelled. Although previous results could
be    reproduced       by   the   current    study,   the   present     status   of  radiobiological      and
epidemiological knowledge does not, as a rule, allow the conclusion that the ionising
radiation emitted by German NPPs during normal operation is the cause. This study
can   not   conclusively   clarify   whether   confounders,   selection   or   random   influences
play a role in the distance trend observed.

http://www.bfs.de/de/bfs/druck/Ufoplan/4334_KIKK.html 4334_kikk_gesamt_t