Automated Radiochemical Workstation Using 6DOF Robot
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Solution Overview
Problem
Current automated radiochemical reaction systems are limited by their design, which often requires specialized equipment and supplies, leading to high costs, reduced productivity, and safety concerns due to radiation exposure, as well as the need for frequent machine shutdowns for maintenance and cleaning.
Innovation Solution
An automated radiochemical reaction system featuring a compact 6DOF intelligent robot and a chemical reaction unit within a hot cell, allowing for autonomous operation without human intervention, using algorithms to navigate the confined space and interact with components safely, reducing the need for specialized supplies and minimizing radiation exposure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If automated radiochemical reaction systems use specialized equipment and supplies, then automation capability is improved, but costs increase and device complexity increases
Solution Approach 1:
The robotic system is designed to perform multiple radiochemical operations (dispensing, mixing, heating, shaking, transferring) using a single multi-functional platform. The robot arm with interchangeable end effectors can handle various reaction vessels and perform different operations, eliminating the need for specialized equipment for each specific task while maintaining full automation capability
Solution Approach 2:
The automated system is divided into modular functional units (robotic arm, end effectors, reaction vessels, heating module, mixing module) that can be independently configured and reconfigured. This segmentation allows the system to achieve automation without requiring completely specialized equipment for each function, as modules can be adapted and reused across different applications
2Productivity
If manual operation is used for radiochemical reactions, then device complexity is reduced, but productivity decreases and safety deteriorates due to radiation exposure
Solution Approach 1:
The robotic system acts as an intermediary between the operator and the radioactive materials. The robot performs all operations inside the hot cell while the operator remains outside, using the robot as a mediator to eliminate direct human exposure to radiation while maintaining high productivity through automated continuous operation
Solution Approach 2:
The system is designed to perform operations autonomously without requiring human intervention during the radiochemical reactions. The robotic arm automatically executes pre-programmed sequences for dispensing, mixing, heating, and transferring materials, enabling continuous operation that maximizes productivity while keeping personnel out of the radiation zone
3Reliability
If frequent maintenance and cleaning are required, then reliability is improved, but productivity decreases due to machine shutdowns
Solution Approach 1:
The system uses disposable reaction vessels and consumable components that are discarded after a single use, eliminating the need for time-consuming cleaning and sterilization procedures. This allows the robotic system to maintain reliability through simple replacement of consumables rather than complex maintenance, enabling continuous operation without prolonged shutdowns
Solution Approach 2:
Reaction vessels and components are pre-prepared and sterilized before being introduced into the hot cell. This preliminary preparation eliminates the need for in-situ cleaning and maintenance during operation, allowing the system to maintain high reliability while achieving continuous uninterrupted operation for extended periods
4Object-affected harmful factors
If compact space is used for hot cell, then safety is improved by reducing radiation exposure area, but device complexity increases to fit all components
Solution Approach 1:
The system employs a nested configuration where reaction vessels are placed inside the hot cell, the robotic arm operates within the confined cell space, and components are arranged in a hierarchical manner to maximize space utilization. This nesting approach minimizes the overall footprint of the radiation-containing area while accommodating all necessary components through careful spatial arrangement
Solution Approach 2:
The robotic arm provides three-dimensional movement capabilities within the confined hot cell space, allowing components to be arranged vertically and in multiple layers rather than only horizontally. This dimensional approach to space utilization fits all necessary components into a compact volume while maintaining accessibility and operational efficiency
Data Source
AI summary
An automated radiochemical reaction system includes a compact 6DOF intelligent robot, a chemical reaction unit and the other hot cell interior elements. They are assembled within a space restrained hot cell where chemical reaction or chemical reaction like actions autonomously are performed. The attached end effector at the end of the robot arm is adapted to grasp, release, and actuate components within the hot cell, as required to automatically and autonomously perform the radiochemical research and development without human interaction.