Sources of uncertainty in the seismic design of submerged free-standing racks

Title: Sources of uncertainty in the seismic design of submerged free-standing racks
Authors: Gonzalez Merino, Alberto
Costas de la Peña, Luis
González, Arturo
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Date: 20-Sep-2017
Abstract: Free-standing racks are 5 m tall structures that store spent fuel removed from the nuclear power reactor on the depths of a spent fuel pool. Rack units are arranged on the floor of this 12 meters deep pool separated by only a few centimeters. Their response to an earthquake event is a troubling safety issue as they are in submerged and free-standing conditions. Such a seismic analysis deals with a highly nonlinear behavior, a transient dynamic response and a fluid-structure interaction problem. To overcome these difficulties in a cost-effective manner, the current analysis methodology implements the hydrodynamic mass concept in commercial finite element analysis software. However, some dispersion of results still exists in the application of this ad-hoc methodology. This paper reviews the seven major sources of uncertainty inherent to the current analysis methodology together with the main challenges of the seismic analysis.
Funding Details: European Commission Horizon 2020
Type of material: Journal Article
Publisher: Elsevier
Journal: Energy Procedia
Volume: 127
Start page: 310
End page: 319
Copyright (published version): 2017 the Authors
Keywords: UncertaintySeismic analysisFree-standingRacksFluid-structure interactionNonlinearTransient analysisHydrodynamic mass
DOI: 10.1016/j.egypro.2017.08.114
Language: en
Status of Item: Peer reviewed
Appears in Collections:Critical Infrastructure Group Research Collection
Earth Institute Research Collection
Civil Engineering Research Collection
TRUSS-ITN Research Collection

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