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Seismic attenuation system for a nuclear reactor

United States Patent

9,881,703
January 30, 2018
View the Complete Patent at the US Patent & Trademark Office
A system for attenuating seismic forces includes a reactor pressure vessel containing nuclear fuel and a containment vessel that houses the reactor pressure vessel. Both the reactor pressure vessel and the containment vessel include a bottom head. Additionally, the system includes a base support to contact a support surface on which the containment vessel is positioned in a substantially vertical orientation. An attenuation device is located between the bottom head of the reactor pressure vessel and the bottom head of the containment vessel. Seismic forces that travel from the base support to the reactor pressure vessel via the containment vessel are attenuated by the attenuation device in a direction that is substantially lateral to the vertical orientation of the containment vessel.
Liszkai; Tamas (Corvallis, OR), Cadell; Seth (Corvallis, OR)
NUSCALE POWER, LLC (Corvallis, OR)
14/ 528,123
20180025795
October 30, 2014
GOVERNMENT INTEREST This invention was made with Government support under Contract No. DE-NE0000633 awarded by the Department of Energy. The Government has certain rights in this invention.