Neutron characterization of ageing and creep processes in materials and parts from decommissioning of nuclear facilities

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Year-Number: 2022-1
Yayımlanma Tarihi: 2022-02-23 20:49:25.0
Language : English
Konu : Physical Characterization
Number of pages: 22-35
Mendeley EndNote Alıntı Yap




Safety conditions and lifetime extension of a Nuclear Facility (NF) are fundamental and a deep knowledge of ageing and creep processes linked with the involved materials and parts is essential to guarantee high levels of reliability and to face severe natural and plant–centred incidences. The analyses classically used in this case, involving non-destructive techniques (NDT) and in-service inspections required by the norms, can present a lack of information. The data acquired, consequently, need to be complemented. Decommissioning of NFs is an important chance to get materials and parts submitted for various years to ageing and degradation, consenting novel diagnostic activities beneficial to suggest eventual additional measures related to the installation of new components or in planning a postponed decommissioning, to increase safety and dependability. Neutron beam techniques (NBT) can be helpful to characterise, in a non–destructive and non-invasive way, materials and parts of nuclear/traditional interest. Positive recommendations exist to exploit neutron methods for reactor materials’ control. In this paper, ageing processes occurring in the NFs sector are briefly introduced and the main neutron techniques are briefly described. Some examples of applications, then are presented. The results obtained by neutron analyses, linked with information on nature and features of materials’ damages, assist to comprehend the trends of fracture and to evaluate a latent picture of preliminary degradation processes leading to any fast crash of material, including inoperability periods before the decommissioning activities.


  • [1] M. Rogante and V. T. Lebedev, "Nanostructure characterisation by SANS for investigation on ageing", In Proc. 31st ESReDA (European Safety, Reliability & Data Association) Seminar Hosted by Vuje VTS, 2007, EUR 22887 EN, pp. 67-78.

  • [2] J. Kite-Powell, "Researchers Use Augmented Reality To See Radiation Defects In Nuclear Reactors", Forbes, Oct. 11, 2021. [Online]. Available: [Accessed Jan. 28, 2022)

  • [3] M. Rogante, "Applicazioni Industriali delle Tecniche Neutroniche", In Proc. 1st. Italian Workshop for Industry "Industrial Applications of Neutron Techniques", 2008, pp. 40-120.

  • [4] M. Rogante and L. Rosta, "Nanoscale characterisation by SANS and residual stresses determination by neutron diffraction related to materials and components of technological interest", In Proc. SPIE 5824, OptoIreland 2005: Nanotechnology and Nanophotonics, 2005, pp. 294-305.

  • [5] M. Rogante, F. G. Cesari, and M. Giorgi, "Decommissioning of Nuclear Facilities: general considerations and suggestions not regarding activated parts", In Proc. 10th International Conference “Mechanical Technologies and Structural Materials” MTSM 2021, 2021, pp. 133-137.

  • [6] S. Nemytov and V. Zimin, "NPP Decommissioning: the concept; state of activities", In Proc. International Meeting "Nuclear Power in Eastern Europe: Safety, European Integration, Free Electricity Market" and The 10th Anniversary of Bulgarian Nuclear Society, 2001, p. 9.

  • [7] O. Glatter and O. Kratky, Small Angle X-ray Scattering. London: Academic Press, 1982.

  • [8] C. Williams, R. P. May and A. Guinier, "Small-Angle Scattering of X-rays and Neutrons", In Characterisation of Materials, “Materials Science and Technology”, vol. 2B, 1994, pp. 611-656.

  • [9] H. M. Rietveld, "Line profiles of neutron powder-diffraction peaks for structure refinement", Acta Crystallographica, vol. 22, 1967, pp.151-152.

  • [10] H. M. Rietveld, "Profile refinement method for nuclear and magnetic structures", Journal of Applied Crystallography, vol. 2, 1969, pp. 65-71.

  • [11] I. C. Noyan and J. B. Cohen, Residual Stress - Measurement by Diffraction and Interpretation. New York: Springer-Verlag, 1987.

  • [12] M. Rogante, "Caratterizzazione, mediante scattering neutronico, di materiali e componenti per l'impiantistica nucleare ed industriale", PhD thesis, University of Bologna, Italy (1999), p. 223.

  • [13] M. Rogante, "Inside welds: advanced characterization of residual stresses by neutron diffraction", Automatic Welding, vol. 11, 2020, pp. 20-26.

  • [14] Zs. Révay, T. Belgya, Zs. Kasztovszky, J. L. Weil and G. L. Molnár, "Cold neutron PGAA facility at Budapest", Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, vol. 213, 2004, pp. 385-388.

  • [15] Zs. Révay, G. L. Molnár, T. Belgya, Zs. Kasztovszky and R. B. Firestone, "A new gamma-ray spectrum catalog and library for PGAA", Journal of Radioanalytical and Nuclear Chemistry, vol. 248, 2001, pp. 395399.

  • [16] M. Balaskó and M. Rogante, "La radiografia neutronica al servizio dell’industria", Progettare, vol. 273, 2003, pp. 35-39.

  • [17] M. Balaskó and E. Sváb, "Neutron Radiography in Research and Development", Nukleonica, vol. 39, no. 1/2, 1994, pp. 3-22.

  • [18] H. Berger, Neutron Radiography. Methods, Capabilities, and Applications. New York: Elsevier, 1965.

  • [19] M. Rogante, P. Battistella and F. Cesari, "Hydrogen interaction and stress-corrosion in hydrocarbon storage vessels and pipelines weldings", International Journal of Hydrogen Energy, vol. 31, no. 5, 2006, pp. 597

  • [20] M. Rogante, V. T. Lebedev, S. Kralj, L. Rosta and Gy. Tőrők, "Neutron techniques for welding project methods development in nuclear/traditional industrial application", Multidiscipline Modeling in Materials and Structures, vol. 2, no. 4, 2006, pp. 419-433.

  • [21] M. Rogante, "Materials and Components From NPP Decommissioning: Opportunities of Investigation by Neutron techniques", chapter of Energy-Environment-Economics. New York: Nova Science Publishers, 2014, pp. 109-124.

  • [22] M. Rogante, "Materials and Components From NPP Decommissioning: Opportunities of Investigation by Neutron techniques", International Journal of Energy, Environment and Economics, vol. 20, no. 2, 2012, pp. 107-122.

  • [23] M. Rogante, "Considerations on the investigation of materials and components obtained from NPP Decommissioning", chapter 5 of Nuclear Power Plants. Hauppauge, NY: Nova Science Publishers, 2011.

  • [24] P. Genta and M. Rogante, "Failure predictive models for pipelines through Neutron Diffraction-based stress assessment tools", The Open Petroleum Engineering Journal, vol. 2, 2009, pp. 12-16.

  • [25] K. Wright and B. Karlsson, "Topographic quantification of non-planar localized surfaces", Journal of Microscopy, vol. 130, no. 1, 1983, pp. 37–51.

  • [26] H. E. Exner and M. Fripan, "Quantitative assessment of three-dimensional roughness, anisotropy and angular distributions of fracture surfaces by stereometry", Journal of Microscopy, vol. 138, no. 2, 1985, pp. 161-178.

  • [27] B. B. Mandelbrot, The fractal geometry of nature. San Francisco: H. Freeman and Co., 1982.

  • [28] M. Rogante, F. G. Cesari and V. T. Lebedev, "Defectoscopy and perspectives related to metallic materials adoptable in hydrogen storage pressure tanks production", In Proceedings of the NATO Advanced Research Workshop on Hydrogen Materials Science and Chemistry of Carbon Nanomaterials ICHMS'2005, 2007, pp.

  • [29] M. Rogante, J. Šaroun, P. Strunz, G. F. Ceschini, V. Ryukhtin, P. Lukáš and V. Marinčák, "Nanoscale investigation by SANS of Inconel 738 turbine blades after high-temperature operation", Kovové Materiály Metallic Materials, vol. 43, no. 5, 2005, pp. 371-381.

  • [30] M. Rogante and V. T. Lebedev, "Small angle neutron scattering comparative investigation of Inconel 738 samples submitted to different ageing treatments", Materials & Design, vol. 29, no. 5, 2008, pp. 1060-1065.

  • [32] E. Rétfalvi, Gy. Török and L. Rosta, "Anisotropic small angle neutron scattering analysis of thermally aged reactor-vessel materials", Applied Physics A, vol. 74, 2002, pp. s1415-s1417.

  • [33] G. Albertini, G. Bruno, F. Fiori, M. Rogante and F. Rustichelli, "Studies of residual stresses, microstructural evolution and texture in steels and alloys by neutron techniques", In Proc. ECSC Workshop “Modelling of steel microstructural evolution during thermomechanical treatment”, 1997, pp. 185-195.

  • [34] R. Hinca and G. Bokuchava, "Neutron diffraction measurements of residual stresses in NPP construction materials", In Proc. Int. Youth Nuclear Congress 2000, 2000, p. 4.

  • [35] F. Vodák, R. Černý, J. Drchalová, Š. Hošková, O. Kapičková, O. Michalko, P. Semerák and J. Toman, "Thermophysical properties of concrete for nuclear-safety related structures", Cement and Concrete Research, vol. 27, no. 3, 1997, pp. 415-426.

  • [36] M. Rogante and A. Selezneva, "Cements for nuclear industry: a feasibility study of neutron-based investigations", In Proc. 2nd Int. Conf. "Mechanical Technologies and Structural Materials" MTMS 2011,

  • [37] M. Rogante and V. T. Lebedev, "Advanced characterization of Polymer Cement Concretes by Small Angle Neutron Scattering", In Proc. 9th International Conference “Mechanical Technologies and Structural Materials” MTSM 2019, 2019, pp. 139-144.

  • [38] M. Rogante, I. K. Domanskaya, E. S. Gerasimova, A. Len, L. Rosta, N. K. Székely and E. Vladimirova, "Nanoscale investigation of Polymer Cement Concretes by Small Angle Neutron Scattering", Science and Engineering of Composite Materials, vol. 24, no. 1, 2017, pp. 67-72.

  • [39] M. Rogante, V. Havránek, P. Mikula and V. Ryukhtin, "SANS and PIXE characterization of Polymer Cement Concretes", In Proc. 6th Int. Conf. "Mechanical Technologies and Structural Materials" MTMS2016,

  • [41] E. Retfalvi, Gy. Török and L. Rosta, "Radiation damage study using small-angle neutron scattering", Physica B, vol. 276-278, 2000, pp. 843-844.

  • [42] V. T. Lebedev, Gy. Torok, V. I. Didenko, A. N. Lapin, V. A. Petrov and B. Z. Margolin, "Steel nanostructure under thermal treatment modeling irradiation induced embrittlement", In Abstract book of 3rd European Conference on Neutron Scattering ECNS2003, 2003, p. 136.

  • [43] V. T. Lebedev, Gy. Torok, V. I. Didenko, A. N. Lapin, V. A. Petrov, and B. Z. Margolin, "Investigation of nanostructure of reactor pressure vessel steel with differrent degree of embrittlement", Physica B: Condensed Matter, vol. 350, no. 1-3, Supplement, 2004, pp. E471-E474.

  • [44] V. M. Lebedev, V. T. Lebedev, I. N. Ivanova, S. P. Orlov, D. N. Orlova, "Structure of aluminum alloys irradiated with reactor neutrons", Physics of the Solid State, vol. 52, 2010, pp. 996-999.

  • [45] M. Rogante, F. G. Cesari and G. Migliore, "NPP decommissioning: a methodology to evaluate the gaseous emissions produced by thermal cutting processes", International Nuclear Safety Journal, vol. 3, no. 4, 2014, pp. 43-61.

  • [46] F. Cesari, M. Rogante and A. Giostri, "Results of the experimental campaign on contaminated metal components parameters and suggestions for safely NPP component dismantling", Nuclear Engineering and Design, vol. 238, no. 10, 2008, pp. 2801-2810.

  • [47] F. G. Cesari, M. Rogante and A. Giostri, "Precautions arising from the experimental campaign on contaminated metal components parameters for safely nuclear power plant components dismantling", In Proc. 19th International Conference on Structural Mechanics in Reactor Technology SMiRT 19, 2007, paper # W01/4.

  • [48] F. G. Cesari, M. Rogante, A. Giostri and G. Conforti, "Contaminated metal components in dismantling by hot cutting processes", In Proc. ICONE14 International Conference on Nuclear Engineering ASME ICONE14-89451, 2006, p. 10.

  • [49] F. Cesari, A. Giostri, M. Rogante, E. Sirito and M. Sirito, "Hot cutting processes and emissions characterization in metal components dismantling", In Proc. 11th International Scientific Conference on the Contemporary Achievements in Mechanics, Manufacturing and Materials Science CAM3S`2005, 2005, pp.

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