Research Article
Jul 1971
Control of Ice Jams at Barrett Chute G.S.
Abstract
During severe winter months, ice jams form in the canal of a Canadian hydroelectric peaking plant following the initial loading sequence. The ice cover that forms on the surface of the canal during relatively long shutdown periods (weekends, etc.) disintegrates under the severe surge action that accompanies the rapid loading sequence, and the strong surface currents above the intake structures forcefully compact the fragments into temporary ice jams in the forebay area. Eventually the fragments are drawn into the penstocks and discharged through the plant. Three tests are described, their purpose being: (1) to investigate the effects of discharging ice through the plant on the performance of same; and (2) to ascertain the most suitable loading sequence (of the units) which would produce a minimum degree of blockage in the forebay area and consequently result in a rapid clearance of ice in the canal. The results indicate that the plant can successfully discharge the ice without suffering significant reductions in performance, or damage to the units, and an efficient loading sequence was obtained.
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Information & Authors
Information
Published In
Journal of the Power Division
Volume 97 • Issue 3 • July 1971
Pages: 597 - 609
Copyright
© 1971 American Society of Civil Engineers.
History
Published in print: Jul 1971
Published online: Feb 11, 2021
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Authors
Affiliations
David R. Townsend, AM.ASCE
Assist. Prof., Dept. of Civ. Engrg., Univ. of Ottawa, Ottawa, Canada; formerly Hydraulic Design Engr., Hydraulic Studies Dept., The Hydro-Electric Power Commission of Ontario, Canada
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ASCE Library Cards let you download journal articles, proceedings papers, and available book chapters across the entire ASCE Library platform. ASCE Library Cards remain active for 24 months or until all downloads are used. Note: This content will be debited as one download at time of checkout.
Terms of Use: ASCE Library Cards are for individual, personal use only. Reselling, republishing, or forwarding the materials to libraries or reading rooms is prohibited.
Terms of Use: ASCE Library Cards are for individual, personal use only. Reselling, republishing, or forwarding the materials to libraries or reading rooms is prohibited.