IP Library Granted Patent US 11,651,867
Granted Patent B2
US 11,651,867 · App. 16/871,703 · Granted May 16, 2023

Method for reducing radiologically-contaminated waste

Inventor: Keith Mahosky (Jeannette, PA)
Assignee: Westinghouse Electric Company LLC
G21F9/002B07C5/346G21F9/14G21F9/165G21F9/304G21F9/32B07C2501/0054
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Quick Facts
Patent No.
US 11,651,867
App. No.
16/871,703
Granted
May 16, 2023
Kind
B2
Abstract

A method for reducing radiologically-contaminated waste is provided. The method comprises treating radiologically-contaminated surfaces and subsurfaces. The method comprises consolidating soil waste. The method comprises employing real-time scanning technology to classify waste based at least in part on a threshold of radiological contamination. The waste is sorted based on the classification. The waste is disposed of via at least one of different disposal routes, based at least in part on the classification.

Claims (37)

1. A method for reducing radiologically-contaminated waste, the method comprising:

treating radiologically-contaminated surfaces, wherein the radiologically-contaminated surfaces are treated with a surface treatment agent;

treating radiologically-contaminated subsurfaces, wherein the radiologically-contaminated subsurfaces are treated with a surface/subsurface treatment agent;

consolidating soil waste;

employing real-time scanning technology to classify waste based at least in part on a threshold of radiological contamination;

sorting the waste based on a classification produced from the employing the real-time scanning technology to classify waste;

disposing of the waste via at least one of different disposal routes, based at least in part on the classification; and

at least one of pyrolyzing and incinerating at least a portion of the waste.

2. The method of claim 1 , wherein a reduction of radiologically-contaminated waste from a first contamination threshold to a second, lower contamination threshold occurs.

3. The method of claim 2 , wherein disposing of the waste comprises disposing via a disposal route that corresponds to the second, lower contamination threshold waste class.

4. The method of claim 1 , further comprising characterizing levels of radiological contamination of waste before the treating and consolidating steps.

5. The method of claim 1 , wherein the real-time scanning technology is employed to consolidate soil waste during the consolidating soil waste.

6. The method of claim 5 , wherein the real-time scanning technology comprises:

a radiation detector configured to measure radioactivity of waste and

a conveyor belt system configured to separate waste based on a measured radioactivity.

7. The method of claim 6 , further comprising employing the real-time scanning technology to at least one of classify and consolidate non-soil waste that was treated in at least one of the treating radiologically-contaminated surfaces and the treating radiologically-contaminated subsurfaces.

8. The method of claim 1 , wherein treating radiologically-contaminated surfaces comprises disassembling components and treating the components in a bath.

9. The method of claim 1 , further comprising at least one of shredding and crushing waste.

10. The method of claim 1 , wherein at least one of the surface/subsurface treatment agent and the surface treatment agent are applied via an automated process.

11. The method of claim 1 , wherein at least one of the surface/subsurface treatment agent and the surface treatment agent comprises at least one of a salt, a surfactant, an acid, a chelator, a wetting agent, and an absorbent gel.

12. The method of claim 1 , further comprising cementing at least one of liquid and solid waste.

13. A method for reducing radiologically-contaminated waste, the method comprising:

treating radiologically-contaminated surfaces, wherein the radiologically-contaminated surfaces are treated with a surface treatment agent, wherein treating radiologically-contaminated surfaces comprises disassembling components and treating the components in a bath;

treating radiologically-contaminated subsurfaces, wherein the radiologically-contaminated subsurfaces are treated with a surface/subsurface treatment agent;

consolidating soil waste;

employing real-time scanning technology to classify waste based at least in part on a threshold of radiological contamination;

sorting the waste based on a classification produced by the employing real-time scanning technology to classify waste; and

disposing of the waste via at least one of different disposal routes, based at least in part on the classification,

wherein a reduction of radiologically-contaminated waste from a first contamination threshold to a second lower contamination threshold occurs, and

wherein disposing of the waste comprises disposing via a disposal route that corresponds to the second lower contamination threshold.

14. The method of claim 13 , further comprising at least one of pyrolyzing waste and incinerating waste.

15. The method of claim 13 , further comprising characterizing levels of radiological contamination of waste before the treating radiologically-contaminated surfaces, the treating, treating radiologically-contaminated subsurfaces and the consolidating the soil waste.

16. The method of claim 13 , wherein the real-time scanning technology comprises:

a radiation detector configured to measure radioactivity of waste and

a conveyor belt system configured to separate waste based on a measured radioactivity.

17. The method of claim 13 , further comprising at least one of shredding and crushing waste.

18. The method of claim 13 , further comprising cementing at least one of liquid and solid waste.

Assignments (2)
SECURITY INTEREST Recorded Jan 26, 2024
From: WESTINGHOUSE ELECTRIC COMPANY LLC; BHI ENERGY I SPECIALTY SERVICES LLC; STONE & WEBSTER, L.L.C. (FORMERLY STONE & WEBSTER, INC.)
To: DEUTSCHE BANK AG NEW YORK BRANCH, AS COLLATERAL AGENT
Reel/Frame 066373/0604 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Feb 17, 2021
From: MAHOSKY, KEITH
To: WESTINGHOUSE ELECTRIC COMPANY LLC
Reel/Frame 055293/0661 →
Continuity (1)
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