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Nuclear fuel assembly

Patent ·
OSTI ID:6477291
The fuel assembly comprises a bundle of fuel pins spaced in parallel relation in a uniform lattice by means of support grids resiliently applied against the fuel pins and a rigid independent structure formed by two parallel end plates. Tie-rods extending between the end plates are disposed at uniform intervals at the lattice nodes. The bundle of fuel pins is supported by the first grid on a series of tubular spacer members which surround the lower ends of at least a number of tie-rods with provision for a clearance space. The tubular spacer members extend between the bottom end plate and the first grid, the tie-rods being permitted to pass freely through each grid by means of guide sleeves.
Assignee:
Commissariat A L Energie Atomique (France)
Patent Number(s):
US 4240876
OSTI ID:
6477291
Country of Publication:
United States
Language:
English

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