Seismic Cask Stabilization Device

Primary Inventor: Krishna P. Singh
Contributing Inventor(s): Alan I. Soler
Date of Patent Issuance: February 1, 2005
Status: Granted
Jurisdiction: US
Assignee: Holtec International, Inc.
Equipment Type: HERMIT
Docket Number: HOL-036
Application Number: 10/061,633
Patent Number(s)US 6,848,223 B2

Prior Publication Data: US 2003/0144568 A1 (Jul. 31, 2003)

Abstract: An apparatus and method for stabilizing a spent nuclear fuel containment cask so as to prevent tipping under design basis earthquake conditions. In one aspect, the apparatus comprises a lamina and a slid plate in surface contact with the lamina, forming a slidable interface; wherein the slidable interface has a coefficient of friction within a range resulting in an acceptable level of net horizontal displacement of a cask resting on the apparatus under design basis earthquake conditions.