Back to the Future: Nuclear Power

Author(s):  
Michael H. Fox

Nuclear power is considered by many to be an old technology locked in the past— they say the future is with solar and wind. Commercial nuclear power began in 1951 when Russia built the first civilian nuclear power reactor, followed by the British in 1956 and the Americans in 1957. In the 1960s and 1970s, nuclear power plants blossomed all over the world. There were 42 reactors in the United States in 1973; by 1990 there were 112. Some of these were closed, so by 1998 there were 104 operating nuclear reactors (the same number operating at the end of 2012) providing about 100 GWe (gigawatts electric ) to the grid. Worldwide, there were 432 operating nuclear reactors as of mid-2013. Nuclear reactors have been providing about 20% of the electricity in the United States for over 20 years, with no emissions of carbon dioxide (CO2 ). France gets nearly 75% of its electricity from nuclear power, the highest proportion of any nation. Germany and Japan each got more than 25% of their electricity from nuclear power in 2010; though Germany shut down about half of its reactors, Japan temporarily shut down all of its reactors, and both are considering permanently closing down their reactors after the accident in Fukushima, Japan, in 2011. So nuclear power has been providing electricity for over 50 years and plays a major role in the energy mix for a number of countries. But nuclear power is also critically important for an energy future that will meet our electrical power needs with minimal production of greenhouse gases and benign effects on the environment. We must go back to the future if we want to make serious inroads into reducing greenhouse gases and global warming. To see why nuclear power is critical for the future, let’s begin our journey by touring a nuclear power plant. The Wolf Creek nuclear power plant sits on the flat plains of Kansas about 60 miles south of Topeka and 4 miles from Burlington, about 200 miles east of the wheat fields I farmed as a kid. A 5,090-acre lake filled with crappie, walleye, large and smallmouth bass, and other game fish provides cooling water for the reactor and also provides a fishing mecca for Kansans. The 10,500-acre site, including the reactor complex and the lake, has about 1,500 acres of wildlife habitat, and about one-third is leased to area farmers and ranchers. The plant itself takes up less than half a square mile. The lake provides habitat for waterfowl, as well as for bald eagles and osprey. It is hard to imagine that electricity for 800,000 people is generated in this pristine area of farmland and nature preserve.

2021 ◽  
Vol 9 (2A) ◽  
Author(s):  
Jônatas Franco Campos da Mata ◽  
Amir Zacarias Mesquita

The Fukushima Daiichi nuclear accident in Japan in 2011 has raised public fears about the actual safety of nuclear power plants in several countries. The response to this concern by government agencies and private companies has been objective and pragmatic in order to guarantee best practices in the several phases of nuclear reactors. In countries where the nucleo-electric matrix is consolidated, such as the United States, France and the United Kingdom, the safety assessment is carried out considering deterministic and probabilistic criteria. In the licensing stages of new projects, it is necessary to analyze and simulate the behavior of the nuclear power plant, when subjected to conditions that can lead to sequences of accidents. Probabilistic Safety Assessment (PSA) is fundamental in this process, as it studies in depth the sequences of events that can lead to damage to the reactor core. Such sequences should be quantified in terms of probability of occurrence and your possible consequences, and organized through techniques such as Fault Tree Analysis and Event Tree Analysis. The present work will describe the procedures for the realization of PSA and its applicability to the assurance of the operational reliability of the nuclear reactors, as well as a brief comparative between the approaches used in some countries traditionally users of thermonuclear energy and Brazil. By means of this analysis, it can be concluded that nuclear power is increasingly reliable and safe, being able to provide the necessary tranquility for the population of the countries where it is inserted.


2014 ◽  
Vol 06 (01) ◽  
pp. 73-80
Author(s):  
Hui-yi TSENG

In 2013, the Ma administration had implemented various domestic reforms, such as revamping the military trial system and the fourth nuclear power plant construction plan. Ma's popularity rating plummeted after the Wang Jin-pyng wiretapping scandal broke out. Ma managed to balance between China, the United States and Japan. The ineffectualness of the Ma administration is likely to negatively impact on the Kuomintang's performance in the coming local election in end 2014.


2021 ◽  
Author(s):  
Alessandro Piazza ◽  
Fabrizio Perretti

How do firms' strategic decisions affect the emergence and evolution of activism? We examine this question through a study of protests against nuclear power plants in the United States. We find that the decision to cancel construction of a nuclear unit—a substantial victory for activists—is associated with an upsurge in antinuclear protest activity, as emboldened activists stay mobilized even once the level of threat abates. We also find that when a firm decides to complete a nuclear power plant, thereby marking a defeat for activists, antinuclear protests wind down and we witness an increase in mobilization towards other causes. We discuss the implications of our findings for the study of the interaction between social movements and firms.


2006 ◽  
Vol 1 (2) ◽  
pp. 190-200
Author(s):  
Heki Shibata ◽  

In Japan two sets of guidelines pertaining to modern aseismic design are being prepared. One is the guideline for the aseismic design of petrochemical plants and oil refineries, and the other is the code of aseismic design of nuclear power plants. The International Atomic Energy Agency also established its own guideline very recently. Several other countries also provide their own codes or guidelines. Among these, the regulatory guides of the United States are well known and quoted often; however some of them seem to be too sophisticated, for example, the three dimensional input problem. The reason for this is that the requirement of safety for a nuclear power plant is so severe that all events which have even a very low probability of occurrence should be considered. Therefore, if the results of theoretical study indicate an event which may occur even in very low probability, then from the viewpoint of conservatism, the designer must consider that event in this design. Although for the design of a nuclear power plant this might be partly true, the author feels that the probability of occurrence of the event should be evaluated in relation to the potential hazard of the design object. As well as this, he believes that proper understanding of the event in relation to the actual record of failures during past destructive earthquakes should be taken into consideration.


2021 ◽  
Vol 2083 (2) ◽  
pp. 022020
Author(s):  
Jiahuan Yu ◽  
Xiaofeng Zhang

Abstract With the development of the nuclear energy industry and the increasing demand for environmental protection, the impact of nuclear power plant radiation on the environment has gradually entered the public view. This article combs the nuclear power plant radiation environmental management systems of several countries, takes the domestic and foreign management of radioactive effluent discharge from nuclear power plants as a starting point, analyses and compares the laws and standards related to radioactive effluents from nuclear power plants in France, the United States, China, and South Korea. In this paper, the management improvement of radioactive effluent discharge system of Chinese nuclear power plants has been discussed.


Author(s):  
R. Z. Aminov ◽  
A. N. Bairamov

THE PURPOSE. System efficiency and competitiveness assess of a new scheme for combining a nuclear power plant with a hydrogen complex based on additional heating of feed water and superheating of live steam in front of the high-pressure cylinder of a steam turbine. METHODS. Basic laws of thermodynamics were applied when developing and substantiating a new scheme for combining a nuclear power plants (NPP) with a hydrogen facility; theoretical regularities were applied of heat engineering; basic regularity were applied of fatigue wear of power equipment and assessment of its working resourse; basic regularities were applied for the assessment of operating costs and net present value (NPV). RESULTS. A new scheme is presented of the combination of a nuclear power plant with a hydrogen facility and a description of its operating principle on the example of a two-circuit nuclear power plant with a VVER-1000 reactor and a C-1000-60 / 1500 turbine. The data are presented on an increase in the productivity of steam generators at nuclear power plants with additional heating of feed water in the range of 235-250 ° C from its nominal value of 230 ° C. The temperature was estimated of live steam superheat depending on the temperature of the additional heating of the feed water. The results are presented of the calculation of the generated peak power by the power unit and the efficiency of conversion of the night off-peak power of the NPP into peak power, as well as the efficiency of the power unit of the NPP depending on the temperature of additional heating of the feed water. Main regularities are given for taking into account the fatigue wear of the main equipment of the hydrogen facility, including the rotor of the NPP turbine in the conditions of the stress-cyclic operation. The results are presented of assessing the cost of peak electricity NPP in combination with a hydrogen facility in comparison with a pumped storage power plant (PSPP) both for the current period and for the future until 2035. CONCLUSION. Hydrogen facility efficiency and competitiveness depends significantly on the intensity of the use of the main equipment in the conditions of the intense-cyclic operation. The hydrogen facility will competitiveness noticeably increase in comparison with the PSPP in the future. Efficiency of the NPP power unit and NPV is highest when the feed water is heated to 235 ° C and superheating of live steam in front of the high-pressure cylinder of the C-1000-60/1500 turbine up to 470°C.The hydrogen facility competes with the PSPP with her specific capital investment at the level of 660 USD / kW, provided that the boosting capabilities of the turbine are used with live steam overheating at 300 ° C and additional heating of feed water to 235°C on the current period. The PSPP does not compete with the hydrogen facility both for the current period and in the future with her specific capital investment of $ 1,500 / kW and above.


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