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Reactor coolant pump flywheel

United States Patent

November 26, 2013
View the Complete Patent at the US Patent & Trademark Office
A flywheel for a pump, and in particular a flywheel having a number of high density segments for use in a nuclear reactor coolant pump. The flywheel includes an inner member and an outer member. A number of high density segments are provided between the inner and outer members. The high density segments may be formed from a tungsten based alloy. A preselected gap is provided between each of the number of high density segments. The gap accommodates thermal expansion of each of the number of segments and resists the hoop stress effect/keystoning of the segments.
Finegan; John Raymond (Pittsburgh, PA), Kreke; Francis Joseph (New Kensington, PA), Casamassa; John Joseph (Wexford, PA)
Curtiss-Wright Electro-Mechanical Corp. (Cheswick, PA)
12/ 470,320
May 21, 2009
GOVERNMENT INTEREST The United States Government has rights in this invention pursuant to Contract No. DE-FC07-07ID14779 between the U.S. Department of Energy and Westinghouse Electric Company.