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Underwater fuel assembly deformation measurement with multisensor dual-line structured light
Applied Optics
|November 22, 2021
Summary
This study introduces an underwater system for measuring nuclear fuel assembly deformation. The system achieves high accuracy in measuring bow and twist, ensuring safer reactor operation.
Area of Science:
- Nuclear Engineering
- Optical Measurement Systems
- Robotics
Background:
- Fuel assembly deformation is critical for nuclear reactor safety and fuel rod insertion.
- Accurate measurement of fuel assembly deformation is essential for safe reactor operation.
Purpose of the Study:
- To develop an underwater system for precise measurement of nuclear fuel assembly deformation.
- To enhance the safety and efficiency of nuclear energy systems through accurate deformation monitoring.
Main Methods:
- Utilized 10 sets of visual measurement units for underwater deformation assessment.
- Employed a dual-optical line laser triangulation principle combined with underwater multilayer refractive geometry.
- Incorporated waterproof, radiation-shielding, and reflective structure designs for enhanced performance.
Main Results:
- Achieved a bow deformation measurement accuracy better than 0.3 mm.
- Attained a twist deformation measurement accuracy better than 0.15°.
- Demonstrated shorter measurement times and improved environmental adaptability.
Conclusions:
- The developed underwater system provides transient, high-precision measurements of fuel assembly deformation in deep water and high radiation environments.
- This technology offers a robust solution for safeguarding nuclear reactor operations by ensuring accurate fuel assembly parameter monitoring.
