Reactor core element with pad
AssigneeHitachi, Ltd.
InventorTsuneyasu Yamanaka
Life of this patent
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Abstract
A pad of a fuel assembly with a wrapper tube is pressed out from the interior of the wrapper tube to provide a band-like pad. The pad is reinforced by a reinforcing member fitted in a hollow portion of the pad. The pad is joint to the reinforcing member, or made so that swelling of the pad does not exceed that of the reinforcing material.
Claims9
A core element having a hexagonal tube extending in an axial direction and arranged in adjacent relation to another core element, the improvement comprising a pad having a pad portion which is a pressed out part of the hexagonal tube, the pad portion including six flat side faces forming a hexagonal continuous band-like configuration with gradient portions at the axial ends of the side faces, and a band member fitted in a hollow made in the hexagonal tube opposite to the pad portion pressed out for reinforcing the pad portion.
A core element having a wrapper tube extending in an axial direction and arranged in adjacent relation to another core element, the improvement comprising a portion of the wrapper tube pressed out to provide a pad on the periphery of the wrapper tube, the pad having a hexagonal shape forming a continuous band about the periphery of the wrapper tube and being provided with gradient portions at the axial ends of the pad, and a reinforcing band plate fitted in a band-like hollow portion formed in the interior of the pad.
Dependencies are inferred from the claim text.