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Design of New Trash Rack

Design of New Trash Rack

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Figure 1: Draft Tube Arrangement for Each Unit
Figure 4: Failed Section of Trash Rack and Details
Figure 6: ASCE Nomenclature for Vibration Modes of Trash Racks
Figure 7: Correlation between Vortex Shedding Frequencies and Trash...
+1 Figure 8: Modal Analysis Results Showing Second Lateral Mode at 106.5 Hz
Failure Forensics and Re-Design of Reversible Flow Draft Tube Trash Racks at a Pumped-Storage Plant
Conference Paper
Full-text available
  • Feb 2019
This paper documents the resolution of trash rack failures in the lower pool draft tube trash racks for Ameren Missouri's two-unit, 450 MW Taum Sauk Pumped-Storage Plant. During clean out of the tail race, portions of the steel draft tube trash racks were found in the tail race. Engineering support was provided by HPPi and HDR to incorporate and an...
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... changes resulting from the FEA results and a constructability review were incorporated into the design drawings and the fabrication specification. The final design is shown in Figure 9. Typical results from the FEA dynamic analyses are shown as modal frequencies in the correlation diagram of Figure 10, which provides results for lateral vibration modes. ...