When the turbine guide bearings installed at several hydroelectric plants in the U.S. suffered short lives and significant wear, the owners turned to lignum vitae material. Their experience has shown that this material, although more costly, can provide longer service life than composite and plastic bearing materials.
A 20% capacity decrease at the 3-MW Shoshone Powerplant led Bureau of Reclamation personnel to commission an underwater sonar inspection of the penstock and river outlet intakes. Images revealed significant sediment accumulation around the intake that likely is responsible for the decreased generation at the plant.
Using a newly installed condition monitoring system, the owner of the 485-MW pumped-storage plant at Kinzua Dam has been able to monitor the supervisory parameters and rotor air gaps. This system has allowed the utility to establish a series of baseline characteristics for the three units in each available operating mode.
Those who remember NBC's Saturday Night Live of the early 1990s undoubtedly recall Al Franken, who, after serving as both a cast member and writer for the show, has since become a U.S. Senator from Minnesota.
Two hydropower development bills in Senate hands
Book provides guide to water control gates
Federal budget explores sale of Tennessee Valley Authority
AAR makes Mactaquac project's future unclear
Maine to streamline tidal power permitting process
Study predicts mixed bag of water availability on Pacific Coast
Report card gives America's dams a "D" grade
Frizell announces retirement from Bureau of Reclamation
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