Integrated Radioactive Waste Vessel with Polyethylene Liner
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Solution Overview
Problem
Existing solutions for treating and disposing of radioactive wastewater and waste, such as ion exchange resin, require separate vessels for treatment and disposal, leading to inefficiencies and safety concerns during storage and transport.
Innovation Solution
A vessel with a metal shell and a polyethylene liner, designed as a high-integrity container, capable of both treating radioactive wastewater and disposing of radioactive waste, eliminating the need for separate storage and handling processes by integrating treatment and disposal functions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If separate vessels are used for treatment and disposal of radioactive waste, then treatment and disposal functions are clearly separated, but device complexity and handling requirements increase
Solution Approach 1:
The patent combines the treatment function (ion exchange vessel) and disposal function (high integrity container) into a single integrated vessel. The ion exchange media is contained within an inner container that is itself contained within the outer pressure vessel, allowing both treatment and disposal functions to coexist in one device, thereby reducing the number of separate vessels needed and simplifying the overall system complexity
Solution Approach 2:
The outer pressure vessel is designed to serve multiple functions: it acts as both the treatment vessel for ion exchange processes and the high integrity disposal container for spent radioactive waste. This multi-functional design eliminates the need for separate treatment and disposal vessels, reducing device complexity while maintaining functional separation through the nested container structure
2Reliability
If polyethylene HICs with rounded shoulders are used for disposal, then shock absorption is improved, but ease of operation deteriorates due to requirement for metal baskets or nylon straps
Solution Approach 1:
The patent employs a nested container structure where the inner polyethylene container (containing spent ion exchange media) is placed within the outer metal pressure vessel. The outer vessel's structural integrity and handle design enable direct lifting and moving without requiring additional metal baskets or nylon straps, while the inner polyethylene container provides shock absorption for the radioactive waste
3Reliability
If HICs are stacked via tables placed between each HIC, then stability is improved, but device complexity and space requirements increase
Solution Approach 1:
The patent designs the outer pressure vessel with an asymmetric handle configuration and optimized geometric proportions that enable stable stacking directly without requiring intermediate tables. The handle positioning and vessel shape are specifically designed to allow secure interlocking when vessels are stacked vertically, eliminating the need for additional stabilizing components
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The vessel efficiently manages radioactive waste by integrating treatment and disposal, reducing the risk of contamination and personnel exposure, and allowing for safer storage and transport due to its design and materials, which meet stringent regulatory requirements.
Implementation Method 1
the plastic material may be high-density polyethylene, which may be molded to the interior surface of the shell
Implementation Method 2
One such process is known as ion exchange, which is effective for transferring the radioactive content of a large volume of liquid into a small volume of solid
Data Source
AI summary
A vessel for both treatment of radioactive wastewater and disposal of radioactive waste contained therein. The vessel comprises a main vessel structure including a shell formed of a metal material and a liner integrally coupled to the interior surface of the shell. The liner is preferably formed of a plastic material, such as high density polyethylene. Waste treatment equipment for treatment of the radioactive wastewater is provided within the shell. Ion exchange resin is typically located in the main vessel structure which, when spent, constitutes the radioactive waste which is subject to disposal. The vessel is preferably configured to function as a High Integrity Container (HIC).