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008191219e198210##oncd    ob   f000 0 eng d
040 |aCaOODSP|beng|erda|cCaOODSP
0410 |aeng|beng|bfre
043 |an-cn-on
0861 |aEn36-522/61-1982E-PDF
1001 |aTsang, Gee, |eauthor.
24510|aDarlington Ngs cooling water intake risk evaluation for frazil ice blockage / |cby Gee Tsang.
264 1|a[Burlington, Ontario] : |bEnvironment Canada, Canada Centre for Inland Waters = Environnement Canada, Centre canadien des eaux intérieures, |cOctober 1982.
300 |a1 online resource (217 pages in various pagings) : |bcharts.
336 |atext|btxt|2rdacontent
337 |acomputer|bc|2rdamedia
338 |aonline resource|bcr|2rdacarrier
4901 |aUnpublished report
500 |aDigitized edition from print [produced by Environment and Climate Change Canada].
504 |aIncludes bibliographical references.
5203 |a"Ontario Hydro is planning the construction of a nuclear power station at Darlington, Ontario. The cooling and process water will be drawn from Lake Ontario. The water intake will be constructed at a depth of 10 m and a perforated slab will be placed above the intake to prevent fish and other foreign objects from entering the water intake. The blockage of the water intake by frazil is one of the concerns of the water intake and for that the author is requested by Ontario Hydro to examine the frazil blockage. This report is produced in response to the above request. In the analytical study, the thermo-hydrodynamics for the heating and cooling of a lake for water near the freezing point is first explained. Then a mathematical model is developed to predict the cooling and the expansion of the mixing layer. The frazil blockage problem is translated into a problem of supercooling of the mixing layer after it has reached the bottom of the lake. Based on the mathematical model, a computer program is developed which permits the calculation of the temperature and the propagation of the mixing layer under different hydro-meteorological conditions. Some computed results are shown in the report"--Abstract.
546 |aIncludes abstracts in English and French.
650 0|aFrazil ice|zOntario, Lake (N.Y. and Ont.)|xMathematical models.
650 0|aNuclear power plants|zOntario.
650 0|aIntakes (Hydraulic engineering)
650 6|aFrasil|zOntario, Lac (N.Y. et Ont.)|xModèles mathématiques.
650 6|aCentrales nucléaires|zOntario.
650 6|aPrises d'eau (Ouvrages hydrauliques)
7101 |aCanada. |bEnvironment Canada.
7102 |aCanada Centre for Inland Waters.
830#0|aUnpublished report (Canada Centre for Inland Waters)|w(CaOODSP)9.881827
85640|qPDF|s13.96 MB|uhttps://publications.gc.ca/collections/collection_2019/eccc/en36-522/En36-522-61-1982-eng.pdf|zUpdated copy with appendices (2020-11-24)