<abstract xml:lang="en" xmlns="http://www.w3.org/1999/xhtml"><p>Ensuring the safety and high operation reliability of nuclear reactors takes 100% inspection of geometrical parameters of fuel assemblies, which include the grid spacers fabricated as cellular structure with fuel elements. The required grid spacers' geometry of assembly in the transverse and longitudinal cross sections is extremely important for maintaining the necessary heat regime. A universal method for 3D grid spacer inspection using the diffractive optical element, which generates, as the structured light, a multiple-ring pattern on the inner surface of a grid spacer cell is investigated. The experimental measurement error for cell centers position deviation is ±7 μm, and the error for overall dimensions is ±11 μm.</p></abstract>

Ensuring the safety and high operation reliability of nuclear reactors takes 100% inspection of geometrical parameters of fuel assemblies, which include the grid spacers fabricated as cellular structure with fuel elements. The required grid spacers' geometry of assembly in the transverse and longitudinal cross sections is extremely important for maintaining the necessary heat regime. A universal method for 3D grid spacer inspection using the diffractive optical element, which generates, as the structured light, a multiple-ring pattern on the inner surface of a grid spacer cell is investigated. The experimental measurement error for cell centers position deviation is ±7 μm, and the error for overall dimensions is ±11 μm.

Using the Diffractive Optics for 3D Inspection of Nuclear Reactor Fuel Assembly Grid Spacers

Technological Design Institute of Scientific Instrument Engineering, Siberian Branch of the Russian Academy of Sciences 41, Russkaya str., Novosibirsk, 630058, Russia

Measurement Science Review

Ensuring the safety and high operation reliability of nuclear reactors takes 100% inspection of geometrical parameters of fuel assemblies, which include the...

Using the Diffractive Optics for 3D Inspection of Nuclear Reactor Fuel Assembly Grid Spacers

Published Online: Jun 25, 2008

Page range: 71 - 77

DOI: https://doi.org/10.2478/v10048-008-0018-7

Keywords
structured light method, diffractive optical element, fuel assembly, grid spacer

This content is open access.

Using the Diffractive Optics for 3D Inspection of Nuclear Reactor Fuel Assembly Grid Spacers

Published Online: Jun 25, 2008

Page range: 71 - 77

DOI: https://doi.org/10.2478/v10048-008-0018-7

Keywordsstructured light method, diffractive optical element, fuel assembly, grid spacer

This content is open access.

Keywords
structured light method, diffractive optical element, fuel assembly, grid spacer