Design of Poolside Inspection System for Spent Fuel Assemblies Based on Photogrammetry

doi:10.3901/JME.2020.21.048

Abstract

Abstract: Spent fuel assemblies poolside inspection (PSI) is an important test in nuclear power plants. Aiming at the shortage of pool side inspection technology at home and abroad, a pool side inspection system for spent fuel assemblies based on photogrammetry is designed. Combined with contactless and contactless measurements, the overall dimensions and deformations of the assemblies can be quickly detected, as well as fuel lengths, diameters, gaps, and oxide film thickness of fuel rods. Due to the short life of CCD camera, the key detection element, in the radiation environment, a protective device of radiation resistant camera is designed. Ordinary industrial cameras can be used instead of expensive radiation-resistant cameras by reducing the radiation dose into the camera through reflection. The visual measurement method of length, bending and distortion of fuel assembly, length between fuel rod and upper and lower tube seat and width of clearance lattice is introduced in detail. This has the theory and the practical feasibility, as well as the important application value.

Key words: spent fuel, fuel assembiles deformation, poolside inspection, visual detection, radiation protection

CLC Number:

TL24

Dong Kaijie, LI Duanling, HOU Yan, WANG Xingze. Design of Poolside Inspection System for Spent Fuel Assemblies Based on Photogrammetry[J]. Journal of Mechanical Engineering, 2020, 56(21): 48-55.

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