By Robert Schultz
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Extra info for Oil Spill Response Performance Review of Skimmers (Astm Manual Series)
Brush skimmers are predominately medium to viscous oil skimmers and do best in highly viscous oil. p /! - Oil Flow ^ ^ " ^ «. 0 TEST RESULTS Three sets of tests have been performed on the LORI brush system in recent years, two using the LORI chain brush, one at OHMSETT in 1993, and a second at a commercial test tank in Ottawa in 1992. The LORI drum brush was tested in the Environment Canada basin in Ottawa in 1993. These tests are reviewed in that order. 1 TESTS OF THE LORI CHAIN BRUSH AT OHMSETT 1993 [ 0 - 1 7 ] Skimmer Description The LORI LSC-2 side collector skimming system was tested at OHMSETT in May 1993.
This flume tank is capable of establishing a water current. A wave generator is not installed. Brush Skimmer Description Other General Performance Notes • Based on these tests, chain brush systems are not effective in low viscosity products such as diesel. • The coarse (heavy) brush is not effective in medium viscosity products, about 600 cSt. • The skimming systems can be expected to be effective in many forms of debris. 3 TESTS OF THE LORI DRUM BRUSH SKIMMER 1993 [E-9] Environment Canada performed tests to determine the extent to which the performance of particular skimmers is affected by varying oil viscosity.
6 ft) with a variable speed wave paddle and a propeller to generate a current. The sweep arm was not used because of the width of the tank. Fifty-three test runs were performed at varying currents, wave conditions, brush speeds, and oil viscosities. Test data are reported somewhat differently than in the previous results from the OHMSETT test tank. This study reports free water, emulsified water, and Recovery Efficiency (RE) as percent of the recovered fluid. Fluid recovery rate and Oil Recovery Rate (ORR) are reported separately.