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https://hdl.handle.net/11681/11768| Title: | Lock wall deicing with water jets : field tests at ship locks in Montreal, Canada and Sault Ste. Marie, Michigan |
| Authors: | United States. Army. Corps of Engineers. Office of Research and Development. Brierley, W. H. Calkins, Darryl J. DenHartog, Stephen L. Mellor, Malcolm. Ueda, Herbert T. |
| Keywords: | Deicing systems Deicing Ship locks Water jets High pressure water jets Montreal, Canada Sault Ste. Marie, Michigan Hydraulic structures Ice prevention Ice Locks National Research Council Canada. Division of Mechanical Engineering. |
| Publisher: | Cold Regions Research and Engineering Laboratory (U.S.) Engineer Research and Development Center (U.S.) |
| Series/Report no.: | Special report (Cold Regions Research and Engineering Laboratory (U.S.)) ; 239. |
| Description: | Special Report Abstract: Tests were made to evaluate a proposed technique for removing ice from lock walls during winter navigation. The technique involves use of a high-pressure waterjet to slice through ice collars that adhere to vertical walls. The test equipment consisted of (1) a jet lance tipped with a nozzle designed to produce a long coherent jet, (2) a small tractor (hydraulically driven) to carry the lance, and (3) a high-pressure pump unit to supply water to the lance. Tests were made with operating pressures from 3,000 to 14,000 lbf/in.^2 and nozzle diameters from 0.063 to 0.152 in. Most of the work involved pressures around 9,000 lbf/in.^2 and nozzle diameters of approximately 0.09 in. Traverse speeds were in the range 3 to 17 ft/min. Jet penetrations of up to 4 ft were achieved in a single pass, and the equipment proved capable of cleaning the lock wall under the prevailing conditions. However, performance was somewhat less favorable than had been predicted, and a revised scheme involving changes in lock operating procedures was proposed. |
| Rights: | Approved for public release; distribution is unlimited. |
| URI: | http://hdl.handle.net/11681/11768 |
| Appears in Collections: | Special Report |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| SR-239.pdf | 5.05 MB | Adobe PDF |  View/Open |