Jimmie Åkesson (SD), and Mattias Bäckström and Johansson (SD), and argues that the decision to shut down Swedish nuclear power plant Ringhals 1 and 2 (R1 and R2), and after 45 years of service and represents an ”early settlement”. However, considering the fact that they were designed for 40 years of operation, it is a late settlement,” which is a more accurate description.
the EUROPEAN commission said in 2013, the proposal for the revision of the nuclear safety directive that: ”the Ageing of the safety-related structures, systems, and components in a nuclear power plant, and in particular, the embrittlement of the parts that for practical reasons it is difficult to replace, such as the reactor pressure vessel, means the natural boundary of the acceptable continued operation. From both a safety and economic point of view, is the limit for the operating lifetime of typically 40 years for commercial use.”
One example of this is the oldest kokarreaktorerna (including the R1) has on the outside huvudcirkulationskretsar. The water is supplied from below through a pipe, which is located on the outside of reaktortanken. A breach of such a movement can result in a sudden drop in pressure which causes the water in the reactor is rapidly evaporating. Since it is connected to the bottom of the tank, you can’t recharge it. Instead, they rely on the härdstrilar as the need to have such a high level of capability and precision that the water reaches all of the spaces between the fuel rods.
To test this under real circumstances, will not be possible. If nödkylningen does not work perfect, the heat-melt portions of the core and cause a meltdown. Later, kokarreaktorer (Oskarshamn 3 reactors in the nuclear industry) have huvudcirkulationspumpar which is laid on the inside as they are out of reaktortanken.
this Report discusses the problems that can occur after long-term operation, for example, embrittlement, and to fatigue of the reactor vessel and other vital components. The majority of the Swedish nuclear power reactors (including the R1) and (R2) has been uprating after they were in place. The SSM states that it increases the risk of corrosion, vibration, and bestrålningsförsprödning of reaktortanken.
With the small size and short construction time, have small nuclear reactors in a better position than megaprojekten to meet the future demand and if this can not be accomplished using only renewable generation.
the idea of a pressurized water reactor (R2), and a relatively small exposure of the material to a higher bestrålningsgrad and försprödas faster than that of goods in a kokarreaktortank. DISTINCTIVE attention to the fact that all of the reactors to the risk of exhaustion is designed to earlier safety rules, not taking into account that the reaktorvattenmiljön, in time, will contribute to the formation of fatigue cracks in the areas where the konstruktionstidpunkten did not expect to be one of those.
the Parliament, therefore, based on the SD’s low achievers) to determine how the company will manage the aging of the reactors, with the point of view of economics and safety. But at the same time, the SD to give the company the freedom to take a decision on the level of investment in new nuclear reactors. Why hands-free is just one of these cases?
the Climate is expected to lead to an increase in demand for electricity is growing by 30 to 40 per cent. If so, it might be difficult to cope with the power balance, but an additional variable sources, which, together with hydroelectric power generation complementing wind power. However, in such a case, it would be better to build new nuclear reactors than to continue the use of the facilities constructed over 50 years ago.
as A result of the building of a new nuclear reactor (1500 MW) is to determine the implications for the power balance of the unplanned downtime can be significant. To bet on the number of small reactors rather than one large can be as a way to reduce the risk of a large current loss. Alternatively, require a big power reserve.
the small size and short construction time, have small nuclear reactors in a better position than megaprojekten to meet the future demand and if this can not be accomplished using only renewable generation. But then, the English energiöverenskommelsen, since it provides that they are not allowed to build more reactors than the number to be taken out of service.
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