randalleavitt's Feed

Smarter Use of Nuclear Waste

randalleavitt — Wed, 06 Feb 2008 10:16:00 -0500

W.H. Hannum, G.E. Marsh, G.S. Stanford - Scientific American, 2005 December: Nuclear reactors that use a fast neutron spectrum, and pyrometallurgical processing to recycle fuel, are efficient. Tagged by randalleavitt under Rank: top10, Date: 2005, Author: Hannum W H, Author: Marsh G E, Author: Stanford G S, Title: Smarter Use of Nuclear Waste, Topic: nuclear fission energy,

An Emotional Approach to Future Sustainable Nuclear Energy Development

randalleavitt — Thu, 29 Jun 2006 12:00:00 -0400

Alain Michel - 2000: A discussion of people's lack of enthusiasm for nuclear energy and the need for emotional presentations to change this. This article points out how fiction influences people - often creating images such as mad scientists that affect real decisions about scientific projects and technology investment. For the nuclear industry this influence has been overhwlmingly negative. A more vigorous presentation of positive aspects of nuclear energy would probably be effective, and it is surprising that the industry leaders have not done this. This leads into a discussion of the general understanding of nuclear fission, and of the steps that could be taken to create fission applications that people like, instead of tolerate. Building new nuclear plants underground instead of in the middle of pristine agricultural land might help, and be well worth the small cost increase. A more confident, realistic, and people oriented approach to gaining public support and even enthusiasm seems to be possible. Tagged by randalleavitt under Rank: top10, Date: 2000, Author: Michel A, Title: An Emotional Approach to Future Sustainable Nuclear Energ, Topic: nuclear fission energy,

Annex J Exposures and effects of the Chernobyl accident

randalleavitt — Thu, 29 Jun 2006 12:00:00 -0400

UNSCEAR - 2000: Report to the General Assembly, Annex J. The most recent information about Chernobyl from the UNSCEAR 2000 report The United Nations Scientific Committee on the Effects of Atomic Radiation (UNSCEAR) A full assessment of the Chernobyl accident is included in the UNSCEAR 2000 Report as Annex J "Exposures and effects of the Chernobyl accident". This web article reproduces that annex. The annex is well written and easy to read. But you will need some definitions, such as: t : metric tonne, 1000 kg GWd t-1 : gigawatt days per tonne, the amount of thermal energy produced from each tonne of nuclear reactor fuel PBq : peta becquerel, 10**15 becquerels um : micro meter, one millionth of a meter kBq m-2 : kilo becquerels per square meter MBq m-2 : mega becquerels per square meter Ci km-2 : curies per square kilometer Gy : gray Gy h-1 : grays per hour mSv : milli sieverts A "becquerel" (Bq) of radioactivity occurs if there is one nucleus decay event every second. So kBq indicates one thousand nucleus decay events every second, i.e. one thousand becquerels. MBq indicates one million becquerels. Associating this with a square meter gives a measure of the radioactivity of a land area. A "curie" (Ci) of radioactivity is 37 giga becquerels (GBq), i.e. 37,000,000,000 Bq. A "gray" (Gy) is a measure of an absorbed dose of radioactivity. A "sievert" (Sv) is a measure of a dose equivalent of radioactivity. A milli sievert is one thousandth of a sievert. Tagged by randalleavitt under Rank: top10, Date: 2000, Author: UNSCEAR, Title: Annex J Exposures and effects of the Chernobyl accident, Topic: nuclear fission energy,

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