Newsletter XXVI 2022

The THTR Circular

26. to ... June

 

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      2022 2021
2020 2019 2018 2017 2016
2015 2014 2013 2012 2011

Current news+ Background knowledge

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Nuclear Power Accidents

This PDF file contains an almost complete list of accidents and releases of radioactivity that have become known...

Excerpt from the PDF file for this month:

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June 04, 2008 - (INES 0) - Krsko, Ljubljana, SVN

June 08, 1970 - (INES 4 | NAMS 3,6) - LLNL, CA, USA

June 09, 1985 - (INES 4) - Davis Besse NPP, Oak Harbor, OH, USA

June 10, 2009 - (INES 2) - Cadarache, FRA

June 10, 1977 - (INES - Class!) - Millstone NPP, Waterford, CT, USA

June 13, 1984 - (INES - Class!) - Fort St Vrain NPP, CO, USA

June 14, 1985 - (INES - Class!) - Constituentes, Buenos Aires, ARG

June 16, 2005 - (INES - Class!) - Braidwood NPP, IL, USA

June 17, 1997 - (INES - Class!) - Arzamas-16, Sarov, RUS

June 18, 1999 - (INES 2) - Shika NPP, JPN

June 18, 1988 - (INES - Class!) - Tihange-1 NPP, BEL

June 18, 1982 - (INES - Class!) - Oconee NPP, SC, USA

June 19, 1961 - (INES 3 | NAMS 4) - Sellafield, GBR

June 21, 2013 - (INES - Class!) - Kuosheng NPP, Wanli, TWN

June 23, 2012 - (INES 1) - Rajasthan NPP, IND

June 28, 1992 - (INES 2) - Barsebäck-2 NPP, SWE

June 29, 2005 - (INES - Class!) - Forsmark NPP, SWE

June 30, 1983 - (INES - Class!) - Embalse NPP, ARG

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We are looking for current information. If you can help, please send a message to: nuclear-world@reaktorpleite.de

 

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26. June

 

Turbo expansion | renewable energy

The electricity system would have to be massively converted and expanded to be climate neutral by 2035

By 2035, 845 TWh would have to be generated from renewable energies, more than three times as much as today, according to the Agora Energiewende think tank.

The Agora Energiewende think tank believes that the federal government's goal of increasing the share of renewable energies in electricity consumption to 2035 percent by 100 is fundamentally feasible. However, this requires a "real expansion turbo" for the renewables and the energy infrastructure, according to a study published by her.

Also in view of the increasing demand for electricity due to electric cars, heat pumps and electrolysers, among other things, around 2030 TWh of electricity would have to be generated from renewable energies by 595, twice as much as today, according to the study. By 2035 it would have to be 845 TWh and thus more than three times as much as today ...

 

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Current news+ Background knowledge

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News+ June 26

 

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npp repair | reliable Insecure | renewable energy

Study: renewable energy more reliable than nuclear energy

According to a new study by the German research institute DIW and the Technical University of Berlin, nuclear energy is far less reliable than previously thought. The study, commissioned by the Swiss Energy Foundation (SES), raises serious questions about the viability of nuclear energy as a long-term energy solution.

Nuclear reactors are failing more and more frequently

"Swiss nuclear power plants are subject to great uncertainty, for example due to unplanned safety-related failures or extended inspection and repair times," Fabian Lüscher (33), Head of Nuclear Energy at SES, told Swiss Blick. The researchers examined the different nuclear reactors in the Alpine country and were particularly interested in the times when they were shut down. For example, the Beznau 1 nuclear power plant had to be shut down for a full 2015 days between 2018 and 1100. The Leibstadt nuclear power plant had to be maintained in longer phases in 2016, 2018 and 2021.

The increase in power plant failures over time is particularly striking. While there were seven unscheduled reactor shutdowns in Leibstadt and three in Gösgen between 2011 and 2020, there have only been six incidents in the years before and since 1995. This has direct consequences for supply in Switzerland.

There is probably no security of supply in Switzerland

"The security of the power supply is higher if Switzerland pushes ahead with the expansion of photovoltaics and does not continue to operate nuclear power plants," quotes Blick study author Mario Kendziorski (32). "Swiss nuclear power plants pose a significant risk to security of supply." In the meantime, politicians in the form of the Federal Council are planning energy scenarios to allow both the Leibstadt nuclear power plant and the Gösgen nuclear power plant to continue running until 2035. According to the study, however, this would jeopardize the nation's security of supply.

A similar threat can now also be identified in France, where several nuclear power plants had to be taken off the network together. "This shows that the simultaneous failure of several power plants is a very realistic threat," says Kendziorski. «Not only because of the risk of serious accidents, it is advisable to do without nuclear power and push ahead with the expansion of renewables. It is also worthwhile with a view to security of supply.”

Renewable energies are probably much safer than nuclear power plants

For Switzerland, the study sets up two scenarios for the year 2035. The first scenario follows current plans to maintain run times. This is contrasted with a scenario that assumes that photovoltaic systems will be built instead, which could handle 16 terawatt hours (TWh). Possible electricity trading with neighboring countries was also taken into account. In spring, between March and April, the storage hydroelectric power plants are at their lowest due to the low levels. Then a failure in the current energy mix of nuclear reactors can have particularly severe consequences.

In order to ensure security of supply, a complete switch to regenerative energies would be a suitable option. "There are certain uncertainties in the forecasting of electricity generation with photovoltaics," says Kendziorski. “But they are much easier to calculate than with nuclear power and can be taken into account from the outset when planning. In addition, it is impossible for all solar panels to fail at the same time. It's obviously different with nuclear power plants."

 

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Background knowledge

 

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reaktorpleite.de

 

Map of the nuclear world:

Nuclear energy is dangerous and the reactors are old and dilapidated...

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The internal search:

Corrosion in the truck

brought the following results, among others:

 

June 3, 2022 - France's nuclear power plans in jeopardy

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April 30, 2022 - Atomic France: Then only 28 reactors were on the grid

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Fort St. Vrain 1985 - The HTR prototype in the USA also had stress corrosion cracking

 

 

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YouTube channel - Reaktorpleite

 

euronews - 0:42

Corrosion damage: France shuts down more nuclear power plants

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bwr - 05:06

Safety risk nuclear power plant Neckarwestheim?

 

Will open in a new window! - YouTube channel "Reaktorpleite" playlist - radioactivity worldwide ... - https://www.youtube.com/playlist?list=PLJI6AtdHGth3FZbWsyyMMoIw-mT1Psuc5Playlist - radioactivity worldwide ...

This playlist contains over 150 videos on the topic

 

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Ecosia

This search engine is planting trees!

 

Keyword search: corrosion in the Akw

https://www.ecosia.org/search?q=Korrosion im Akw

 

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Wikipedia

 

stress corrosion cracking

Stress corrosion cracking is the formation of transcrystalline (through the structure grain) or intergranular (along the grain boundaries of the structure) cracking in materials under the simultaneous influence of purely static tensile stress or with superimposed low-frequency pulsating tensile stress and a special corrosion medium. Tensile stresses in the form of residual stresses are also effective ...

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vibration cracking corrosion

Vibration cracking corrosion is the formation of transcrystalline or intergranular cracks in materials due to mechanical vibrations. The occurrence of this corrosion depends on the stress and usually occurs above a specific limit value. In contrast to stress corrosion cracking, the load is cyclic or periodic. Vibration cracking corrosion occurs suddenly and is usually not visible from the outside... 

 

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Back to:

Newsletter XXV 2022 - June 18st to 25th | Newspaper article 2022

 

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