Method to reduce the volume of boiling water reactor fuel channels for storage

Patent metadata

Field	Value
Publication number	US-9514852-B2
Application number	US-201213612921-A
Country	US
Kind code	B2
Filing date	Sep 13, 2012
Priority date	Nov 21, 2011
Publication date	Dec 6, 2016
Grant date	Dec 6, 2016

Abstract

A method of reducing the volume of a boiling water reactor fuel channel for storage in which the fuel channel is sealed with an outer sleeve that is closed at its upper and lower ends. The sleeve, which is made of a malleable metal is then laterally compacted and sheared into segments suitable for transport and/or storage.

First claim

What is claimed is:

1. A method of reducing the volume of an elongated boiling water reactor fuel assembly fuel channel having a plurality of sides, with each side connected along the elongated dimension to two other sides, for storage, comprising, substantially in the following order, performed under water, the steps of:
enclosing the fuel channel with the plurality of sides connected, in an outer sleeve that extends over the entire elongated dimension of the fuel channel, and is malleable, wherein a portion of the outer sleeve is perforated to allow the water to escape and the perforations have traps to prevent debris from escaping with the water;
inserting an inner sleeve within the fuel channel with the inner sleeve extending over the elongated dimension around an inside surface of the fuel channel;
attaching a top of the outer sleeve to a top of the inner sleeve and a bottom of the outer sleeve to a bottom of the inner sleeve around an entire circumference of the fuel channel; and
laterally compacting the fuel channel within the outer sleeve over the entire length of the outer sleeve at the same time.

2. The method of claim 1 wherein the outer sleeve is constructed from a material selected from a group of metals comprising aluminum and copper.

3. The method of claim 1 including the step of laterally segmenting the fuel channel in the outer sleeve into segmented pieces of a desired length, after the laterally compacting step.

4. The method of claim 3 including the step of packaging the segmented pieces for storage.

5. The method of claim 3 wherein the step of laterally segmenting the fuel channel includes the step of shearing the outer sleeve and fuel channel.

Assignees

• Davin Peter F
• Westinghouse Electric Co Llc

Inventors

• Davin Peter F

Classifications

• G21F9/36

  by packaging; by baling · CPC title

• Y10T29/49716

  Converting · CPC title

• G21C19/375 Primary

  Compacting devices, e.g. for fuel assemblies · CPC title

• Y02E30/30

  Nuclear fission reactors · CPC title