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HIGH-seismic-RESISTANT FUEL STORAGE RACK SYSTEM FOR FUEL POOLS IN NUCLEAR power PLANTS

A storage system and fuel rack technology, applied in the field of nuclear fuel storage, can solve the problems of damage to the physical integrity of nuclear fuel, destruction, collision units, etc.

Active Publication Date: 2018-09-07
HOLTEC INT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, if the earthquake is strong, then the interfacial friction may not be sufficient to prevent lateral sliding or tilting / twisting of the racks, causing them to collide and risk breaking the unit and compromising the physical integrity of the stored nuclear fuel

Method used

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  • HIGH-seismic-RESISTANT FUEL STORAGE RACK SYSTEM FOR FUEL POOLS IN NUCLEAR power PLANTS
  • HIGH-seismic-RESISTANT FUEL STORAGE RACK SYSTEM FOR FUEL POOLS IN NUCLEAR power PLANTS
  • HIGH-seismic-RESISTANT FUEL STORAGE RACK SYSTEM FOR FUEL POOLS IN NUCLEAR power PLANTS

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Embodiment Construction

[0033] The features and benefits of the invention are illustrated and described herein by reference to exemplary embodiments. This description of exemplary embodiments is intended to be read in conjunction with the accompanying drawings which are considered a part of the entire specification. Therefore, the present disclosure expressly should not be limited to the exemplary embodiments showing some possible non-limiting combinations of features which may exist alone or in other combinations of features. Furthermore, all features and designs disclosed herein may be used in combination even if not explicitly described as such.

[0034]In the description of the embodiments disclosed herein, any reference to direction or orientation is for convenience of description only and is not intended to limit the scope of the invention in any way. Words such as "below", "upper", "horizontal", "vertical", "above", "below", "upward", "downward", "top" and "bottom" and their derivatives such ...

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Abstract

A high-seismic-resistant fuel storage system for a nuclear fuel pool includes a lined fuel pool and a fuel rack comprising tubular nuclear fuel storage cells attached to a common baseplate . Pedestalsprotrude downwardly from the baseplate supporting the rack on the pool base slab. Spaced embedment plates are fixedly anchored to the base slab to eliminate relative movement between the plates and pool liner. The embedment plates comprise upwardly open recessed receptacles each entrapping one of the rack pedestals therein. The receptacles are configured such that lateral movement of the fuel rack along the base slab in the event of a seismic event is constrained via engagement between receptacle walls and pedestals. Lateral seismic loads are not transferred to the pool liner. In some embodiments, the baseplates in the pool are coplanar and may be abutting engaged to mitigate rack movement during a seismic event.

Description

[0001] Cross References to Related Applications [0002] This application claims priority to U.S. Provisional Patent Application No. 62 / 463,319, filed February 24, 2017, and U.S. Nonprovisional Patent Application No. 15 / 618,774, filed June 9, 2017, in their entirety Incorporated herein by reference. technical field [0003] The present invention relates generally to the storage of nuclear fuel, and more particularly to an improved shock resistant nuclear fuel storage rack system for fuel pools in nuclear power plants. Background technique [0004] A traditional high-density nuclear fuel storage rack is a honeycomb structure supported on a set of pedestals, as shown in Figure 1. The bottom end of each fuel storage unit is welded to a common baseplate for providing a support surface for the upwardly extending storage unit and the nuclear fuel stored therein. The honeycomb region includes a set of narrow prismatic cavities formed by cavities, each sized to accept a single nuc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G21F5/012G21F5/08G21C3/06
CPCG21C3/06G21F5/012G21F5/08G21C19/07Y02E30/30
Inventor 克里希那·P·辛格
Owner HOLTEC INT