Nuclear waste storage canisters

A nuclear waste, tank-type technology, used in nuclear engineering, reactor fuel elements, reactors, etc., can solve problems such as difficulty in obtaining results

Active Publication Date: 2018-07-31
HOLTEC INT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the outcome of this measure has long been difficult to know

Method used

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  • Nuclear waste storage canisters
  • Nuclear waste storage canisters
  • Nuclear waste storage canisters

Examples

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Embodiment Construction

[0030] The features and benefits of the invention are illustrated and described herein by reference to exemplary ("example") embodiments. The description of the exemplary embodiments is intended to be read in conjunction with the accompanying drawings, which are to be considered a part of the entire written description. 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.

[0031]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 as "horizontally" , "downwardly", "upwardly", etc.) should be construed to refer to the orientat...

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Abstract

A dry storage systems for radioactive nuclear waste materials in one embodiment includes a canister having a tubular shell defining an internal cavity for storing nuclear waste material, a lid sealably welded to one end the shell, and an end closure attached to a second end of the shell. The end closure includes a base plate having an upturned peripheral annular closure flange. In one embodiment,a circumferentially-extending butt joint is formed between the closure flange and the shell second end which is hermetically seals by a full through-wall thickness butt weld. Various embodiments may further include secondary pressure retention barriers enclosing the canister or select portions thereof most susceptible to failure under certain conditions.

Description

[0001] Cross References to Related Applications [0002] This application claims priority to US Provisional Patent Application No. 62 / 242,458, filed October 16, 2015, the entire contents of which are hereby incorporated by reference. Background technique [0003] The present invention relates generally to dry storage systems for highly radioactive nuclear waste, and more particularly to canister systems for storing such materials. [0004] In the operation of nuclear reactors such as those used in nuclear power plants, hollow zirconium-tin alloy tubes filled with enriched uranium, known as fuel assemblies, burn within the nuclear reactor core to generate steam for the Rankine power generation cycle. These fuel assemblies need to be removed from the reactor after the energy has been depleted to a predetermined level. These spent nuclear fuel ("SNF") rods are still highly radioactive and generate considerable heat after they have been spent and subsequently removed from the rea...

Claims

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Application Information

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IPC IPC(8): G21C19/00
CPCG21F5/008G21F5/10G21F5/12Y02E30/30
Inventor 克里希纳·P·辛格
Owner HOLTEC INT
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