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== '''[[San Diegan]]''' ==
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[[Image:ATSF 64 at San Diego CA 10-26-63.jpg|thumb|250px|right|{{ATSF 64 at San Diego CA 10-26-63.jpg/credit}}<br />The ''San Diegan'', led by a pair of back-to-back ALCO PA units, reaches the end of the line at San Diego's Union Station on October 26, 1963. The facility, constructed in the [[Mission Revival Style architecture|Mission Revival Style]] in support of the [[Panama-California Exposition]], officially opened on March 18, 1915.]]
==Footnotes==
The '''''San Diegan''''' was one of the named passenger trains of the [[Atchison, Topeka and Santa Fe Railway]] (AT&SF). A true "workhorse" of the railroad, its 126-mile (203-kilometer) route ran from [[Los Angeles, California]] south to [[San Diego]]. It was assigned train Nos. 70&ndash;79 (Nos. 80&ndash;83 were added in 1952 when Budd Rail Diesel Car [RDCs] began operating on the line). The Los Angeles-San Diego corridor (popularly known as the "[[Surf Line]]" &mdash; officially, the Fourth District of the Los Angeles Division) was to the Santa Fe as the [[New York]]&ndash;[[Philadelphia]] corridor was to the [[Pennsylvania Railroad]]. Daily traffic could reach a density of ten trains (each way) during the summer months. The first ''San Diegan'' ran on March 27, 1938 as one set of equipment making two round trips each way. A second trainset delivered in 1941 made possible four streamlined trains each way. In addition, a third set of heavyweight equipment made a fifth trip in each direction.During and after the [[World War II|Second World War]], furlough business from San Diego's military bases necessitated extra (albeit heavyweight) sections of ''San Diegans'', and racetrack specials during horse racing season at [[Del Mar, California|Del Mar]] added to passenger train miles. [[Amtrak]] continued to operate the ''San Diegan'' when it took over operation of the nation's passenger service on May 1, 1971, ultimately retiring the name on June 1, 2001. Today the route of the ''San Diegan'' (the second busiest rail line in the [[United States]]) is served by Amtrak's ''[[Pacific Surfliner]]''.
 
''[[San Diegan|.... (read more)]]''
 
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Latest revision as of 10:19, 11 September 2020

After decades of failure to slow the rising global consumption of coal, oil and gas,[1] many countries have proceeded as of 2024 to reconsider nuclear power in order to lower the demand for fossil fuels.[2] Wind and solar power alone, without large-scale storage for these intermittent sources, are unlikely to meet the world's needs for reliable energy.[3][4][5] See Figures 1 and 2 on the magnitude of the world energy challenge.

Nuclear power plants that use nuclear reactors to create electricity could provide the abundant, zero-carbon, dispatchable[6] energy needed for a low-carbon future, but not by simply building more of what we already have. New innovative designs for nuclear reactors are needed to avoid the problems of the past.

(CC) Image: Geoff Russell
Fig.1 Electricity consumption may soon double, mostly from coal-fired power plants in the developing world.[7]

Issues Confronting the Nuclear Industry

New reactor designers have sought to address issues that have prevented the acceptance of nuclear power, including safety, waste management, weapons proliferation, and cost. This article will summarize the questions that have been raised and the criteria that have been established for evaluating these designs. Answers to these questions will be provided by the designers of these reactors in the articles on their designs. Further debate will be provided in the Discussion and the Debate Guide pages of those articles.

Footnotes

  1. Global Energy Growth by Our World In Data
  2. Public figures who have reconsidered their stance on nuclear power are listed on the External Links tab of this article.
  3. Pumped storage is currently the most economical way to store electricity, but it requires a large reservoir on a nearby hill or in an abandoned mine. Li-ion battery systems at $500 per KWh are not practical for utility-scale storage. See Energy Storage for a summary of other alternatives.
  4. Utilities that include wind and solar power in their grid must have non-intermittent generating capacity (typically fossil fuels) to handle maximum demand for several days. They can save on fuel, but the cost of the plant is the same with or without intermittent sources.
  5. Mark Jacobson believes that long-distance transmission lines can provide an alternative to costly storage. See the bibliography for more on this proposal and the critique by Christopher Clack.
  6. "Load following" is the term used by utilities, and is important when there is a lot of wind and solar on the grid. Some reactors are not able to do this.
  7. Fig.1.3 in Devanney "Why Nuclear Power has been a Flop"