Nuclear fuel cladding for fast reactors

Patent metadata

Field	Value
Publication number	US-12500004-B2
Application number	US-202117996959-A
Country	US
Kind code	B2
Filing date	Apr 22, 2021
Priority date	Apr 24, 2020
Publication date	Dec 16, 2025
Grant date	Dec 16, 2025

Abstract

Nuclear fuel cladding for fast reactors, assemblies thereof, and methods of manufacture thereof are provided. The nuclear fuel cladding comprises a substrate, a first layer, and a second layer. The substrate comprises a tubular shape. The first layer is deposited over an external surface of the substrate. The first layer comprises a corrosion resistant composition. The second layer is disposed over the first layer. The second layer comprises silicon carbide fibers infiltrated with silicon carbide. The second layer is configured to inhibit outward creep of the substrate. A gap is defined intermediate the first layer and the second layer.

First claim

What is claimed is:

1 . A nuclear fuel cladding for a fast reactor, the nuclear fuel cladding comprising:
a substrate comprising a tubular shape; a first layer deposited over an external surface of the substrate,
wherein the first layer comprises a corrosion resistant composition;
a second layer disposed over the first layer,
the second layer comprising silicon carbide fibers infiltrated with silicon carbide,
the second layer configured to inhibit outward creep of the substrate; and
a gap is defined intermediate the first layer and the second layer.

2 . The nuclear fuel cladding of claim 1 , wherein the silicon carbide fibers are infiltrated with silicon carbide by liquid pre-ceramic polymers and decomposition of the liquid pre-ceramic polymers to silicon carbide, chemical vapor infiltration, chemical vapor deposition, or a combination thereof.

3 . The nuclear fuel cladding of claim 1 , wherein the corrosion resistant composition comprises titanium, a titanium alloy, aluminum, an aluminum alloy, chromium, a chromium alloy, zirconium, a zirconium alloy, a ceramic, or a combination thereof.

4 . The nuclear fuel cladding of claim 1 , wherein the corrosion resistant composition comprises Ti 2 AlC, TiAlN, Zr 2 AlC, chromium, chromium nitride, alumina, or a combination thereof.

5 . The nuclear fuel cladding of claim 1 , wherein the substrate comprises zirconium, zirconium alloy, iron, an iron alloy, or a combination thereof.

6 . The nuclear fuel cladding of claim 1 , wherein the substrate comprises a martensitic stainless steel alloy, an austenitic stainless steel alloy, or a nuclear grade zirconium alloy.

7 . The nuclear fuel cladding of claim 1 , wherein the second layer comprises a porosity in a range of 5% to 30% by volume.

8 . The nuclear fuel cladding of claim 1 , wherein the first layer comprises a thickness in a range of 0.1 microns to 10 microns.

9 . The nuclear fuel cladding of claim 1 , wherein the second layer comprises a thickness in a range of 30 microns to 500 microns.

10 . A nuclear fuel rod assembly comprising:
the nuclear fuel cladding of claim 1 ; and a nuclear fuel disposed within the nuclear fuel cladding.

11 . The nuclear fuel rod assembly of claim 10 , wherein the nuclear fuel comprises uranium, a uranium alloy, a uranium compound, plutonium, a plutonium alloy, a plutonium compound, thorium, a thorium alloy, a thorium compound, or a combination thereof.

12 . The nuclear fuel rod assembly of claim 10 , wherein the nuclear fuel comprises uranium nitride.

13 . A fast reactor comprising the nuclear fuel assembly of claim 10 .

14 . A method comprising operating a lead fast reactor at an operating temperature of greater than 600 degrees Celsius utilizing the nuclear fuel assembly of claim 10 .

Assignees

• Westinghouse Electric Co Llc

Inventors

• Lahoda Edward J
• Ferroni Paolo
• Franceschini Fausto

Classifications

• G21C21/02

  Manufacture of fuel elements or breeder elements contained in non-active casings · CPC title

• Y02E30/30

  Nuclear fission reactors · CPC title

• G21C3/07 Primary

  characterised by their material, e.g. alloys · CPC title