Method of magnetically removing an irradiated capsule from a burnable absorber rodlet

Patent metadata

Field	Value
Publication number	US-2025095873-A1
Application number	US-202418962324-A
Country	US
Kind code	A1
Filing date	Nov 27, 2024
Priority date	Jun 23, 2021
Publication date	Mar 20, 2025
Grant date	—

Abstract

An apparatus for removing irradiated Co-60 capsules from a plurality of burnable absorber rodlets. The apparatus comprises a solenoid that induces an electromagnetic flux into a Co-60 capsule and locks the Co-60 capsule in parallel with the apparatus. The apparatus is slideable along a longitudinal axis of the burnable absorber rodlet and causes the Co-60 capsule to overcome a plurality of forces exerted on it.

First claim

What is claimed is:

1 . A system for removing irradiated burnable absorber (BA) capsules from a plurality of burnable absorber rodlets, the system comprising:
a control circuit communicably coupled to a rodlet positioning module, a cutting module, and one or more BA capsule removal modules; the control circuit comprises at least one processor, and configured to:
secure, by the rodlet positioning module, a first BA rodlet to the rodlet positioning module;
position, a first BA capsule removal module around the BA rodlet;
remove, by the cutting module, the first BA rodlet from a BA assembly, wherein the first BA rodlet comprises a plurality of BA capsules;
select, by the first BA capsule removal module, a first BA capsule from a plurality of BA capsules;
induce, by the first BA capsule removal module, an electromagnetic flux into the first BA capsule comprising a ferromagnetic material, wherein the electromagnetic flux locks the first ferromagnetic BA capsule in parallel with the first BA capsule removal module;
remove, by the cutting module, a bullet nose plug from the first BA rodlet;
leverage, by the rodlet positioning module, the position of the first BA rodlet relative to the first BA capsule removal module, wherein the applied leverage by the rodlet positioning module allows the first BA capsule removal module to move the first BA capsule in along a longitudinal axis;
align, by the rodlet positioning module, the first BA rodlet over a first vacant storage slot in a capsule storage cage; and
deposit, by the first BA capsule removal module, the first BA capsule into the first vacant storage slot of the capsule storage cage.

2 . The system for removing irradiated burnable absorber (BA) capsules from a plurality of burnable absorber rodlets of claim 1 , wherein the plurality of BA rodlets comprise a paramagnetic cladding material disposed about an outer surface of the BA rodlet.

3 . The system for removing irradiated burnable absorber (BA) capsules from a plurality of burnable absorber rodlets of claim 1 , wherein the control circuit is manually operated by a technician.

4 . The system for removing irradiated burnable absorber (BA) capsules from a plurality of burnable absorber rodlets of claim 1 , wherein the control circuit autonomously provides instructions to the first BA capsule removal module, rodlet positioning module, and the cutting module without human intervention, and wherein the control circuit automatically evaluates feedback responses from the first BA capsule removal module, rodlet positioning module, and the cutting module.

5 . The system for removing irradiated burnable absorber (BA) capsules from a plurality of burnable absorber rodlets of claim 1 , wherein the burnable absorber material comprises Cobalt-60 isotopes.

6 . The system for removing irradiated burnable absorber (BA) capsules from a plurality of burnable absorber rodlets of claim 1 further comprises:
a second BA capsule removal module communicably coupled to the control circuit;
the control circuit is configured to:
select, by the second BA capsule removal module, a second BA capsule from a plurality of BA capsules, and induce an electromagnetic flux into the second BA capsule, and wherein control circuit transitions the movement control of the second BA capsule from the second capsule removal module to the first capsule removal module.

Assignees

• Westinghouse Electric Co Llc

Inventors

• Heibel Michael D
• Hildebrand Cory

Classifications

• G21G1/02

  in nuclear reactors (by thermonuclear reactions G21B; conversion of nuclear fuel G21C) · CPC title

• G21C23/00

  Adaptations of reactors to facilitate experimentation or irradiation · CPC title

• G21C19/02 Primary

  Details of handling arrangements · CPC title

• G21C19/19

  Reactor parts specifically adapted to facilitate handling, e.g. to facilitate charging or discharging of fuel elements · CPC title

• G21C7/04

  of burnable poisons (burnable poisons in fuel rods G21C3/326) · CPC title