Vem var Astrid …



Astrid är namnet på en 4-Generationens kärnreaktor som utvecklades i samarbete inom EU där även Sverige bidrar.

”To coordinate this work in the European Union, the Sustainable Nuclear Energy Technology Platform (SNETP) set up a taskforce comprising research organisations and interested industrial partners as the basis of the European Sustainable Nuclear Industrial Initiative (ESNII), the aim of which is to address the need for demonstration of Generation IV FNR technologies, together with the supporting research infrastructures, fuel facilities and R&D work. ESNII was officially launched at the SET-Plan Conference in Brussels in November 2010, with the aim of promoting Europe’s leadership in the development of Generation IV FNR technology in support of the energy system decarbonisation targets set in the EU’s Strategic Energy Technology Plan (SET-Plan).”

European Scientist  The Astrid nuclear project: even the ghost is gone
NyTeknik  Svenska forskare tar sig an franska reaktorer
NyTeknik  Energijättarna nobbar återvunnet kärnbränsle
NyTeknik  Vi kan inte vänta på nästa generation kärnkraft

Så här ser (såg) tidplanen ut för driftsättning och produktion med Astrid:

Men sedan varken Frankrike eller Japan vill satsa mer så lades projektet nyligen ner efter satsade mer än 7 miljarder rapporterar Reuters:

France drops plans to build sodium-cooled nuclear reactor

PARIS (Reuters) – France’s CEA nuclear agency has dropped plans to build a prototype sodium-cooled nuclear reactor, it said on Friday, after decades of research and hundreds of millions of euros in development costs.

Confirming a report in daily newspaper Le Monde, the state agency said it would finalize research in so-called “fourth generation” reactors in the ASTRID (Advanced Sodium Technological Reactor for Industrial Demonstration) project this year and is no longer planning to build a prototype in the short or medium term.

In the current energy market situation, the perspective of industrial development of fourth-generation reactors is not planned before the second half of this century,” the CEA said.

In November last year the CEA had already said it was considering reducing ASTRID’s capacity to a 100-200 megawatt (MW) research model from the commercial-size 600 MW originally planned.

Le Monde quoted a CEA source as saying that the project is dead and that the agency is spending no more time or money on it.

Sodium-cooled fast-breeder reactors are one of several new designs that could succeed the pressurized water reactors (PWR) that drive most of the world’s nuclear plants. [tinyurl.com/y84d2hvc]

In theory, breeders could turn nuclear waste into fuel and make France self-sufficient in energy for decades, but uranium prices have been on a downward slope for a decade, undermining the economic rationale for fast-breeder technology.

There are also serious safety concerns about using sodium instead of water as a reactor coolant.

Since sodium remains liquid at high temperatures – instead of turning into steam – sodium reactors do not need the heavy pressurized hulls of PWRs. But sodium burns on contact with air and explodes when plunged into water.

An earlier French model was scrapped in the 1980s after encountering major technical problems.

The ASTRID project was granted a 652 million euro ($723 million) budget in 2010. By the end of 2017 investment in the project had reached 738 million euros, according to public auditor data quoted by Le Monde.

The CEA said a revised program would be proposed by the end of the year for research into fourth-generation reactors beyond 2020, in line with the government’s long-term energy strategy.

Konkurrensen med prisbilligt uran är för svår, återvinningsargumentet håller inte, säkerheten svårbedömbar, tidplanen för sen och förnybara energikällor (vind och sol) tar över alltmer.

Sven Nordblad

Detta är artikel 1 av 3 med temat kärnkraft eller sol, vind och vatten.

Sven Nordblad

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