Seismic behavior of spent-fuel racks supported by aseismic bearing devices

Conference · Wed Jan 01 04:00:00 EST 1986 · Trans. Am. Nucl. Soc.; (United States)

OSTI ID:6908675

Alliot, P

The governing loads acting on a spent-fuel rack are seismic loads due to the horizontal components of earthquake floor motion. For racks supported by pads and which are free standing on the pool floor, these loads are amplified by the dynamic response of the rack structure. With the use of neutron-absorbing material leading to higher density storage of assemblies, there is a need to design a base isolation that would support the racks and uncouple them from the horizontal floor accelerations. Framatome has designed and qualified a base isolation system consisting of two orthogonal layers of rollers, which can accommodate both horizontal ground motions of an earthquake. This paper presents the following various tests and calculations performed in order to qualify the aseismic bearing devices: 1) one-quarter-scale test on a shake table in order to show the magnitude of the reduction of horizontal acceleration; 2) test on a scale 1 spent-fuel module in a test pool in order to evaluate the fuel rack motion damping and qualify the method used to calculate the hydrodynamic coupling masses between fuel rack and pool; and 3) nonlinear time history calculation of the fuel rack displacement during an earthquake.

• Research Organization: Framatome-France, Courbevoie
• OSTI ID: 6908675
• Report Number(s): CONF-861102-
• Conference Information: Journal Name: Trans. Am. Nucl. Soc.; (United States) Journal Volume: 53
• Country of Publication: United States
• Language: English

Related Subjects

050900* -- Nuclear Fuels-- Transport
Handling
& Storage
11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS
DAMPING
DESIGN
DYNAMIC LOADS
EARTHQUAKES
FUEL RACKS
GROUND MOTION
MECHANICAL STRUCTURES
MOTION
SEISMIC EFFECTS
SEISMIC EVENTS
SPENT FUEL STORAGE
STORAGE
SUPPORTS