Three-dimensional noncontact inspection of geometric parameters of grid spacers in nuclear reactors
O.I.Bityutskii, V.V.Vertoprakhov, A.A.Gushchina, M.G.Zarubin, P.I.Lavrenyuk, V.I.Ladygin, Yu.K.Karlov, K.I.Kuchinskii, Yu.V.Pimenov, S.V.Plotnikov, V.V.Rozhkov, I.G.Chapaev, V.M.Chernyshov, Yu.V.Chugui, and V.P.Yunoshev
Novosibirsk
Pages: 4–15
Abstract
Severe requirements are imposed on the geometric parameters of the grid spacers in order to ensure a high reliability of fuel assemblies of nuclear reactors. They specify position of the beam of fuel elements in the transverse and longitudinal directions of the fuel assemblies. This is of extreme importance for preventing their corrosion and maintaining the required heat regime of functioning. A laser measuring machine (LMM) was developed and produced using the multipoint structured illumination method to ensure 100 % 3D inspection of the geometric parameters of grid spacers in Russian VVER-1000 nuclear reactors. A measurement method as well as hardware and software of the LMM are presented. Results of LMM testing in the industrial conditions are presented and discussed. Phase retrieval profilometer for in-process measurement of 3D microstructure surfaces
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