Computational neutron emission spectrometry and radiation assessment in VVER-1200 reactor nuclear fuel; Radiation Physics and Chemistry; Vol. 229

Computational neutron emission spectrometry and radiation assessment in VVER-1200 reactor nuclear fuel; Radiation Physics and Chemistry; Vol. 229

Bibliographic Details
Parent link:Radiation Physics and Chemistry.— .— Amsterdam: Elsevier Science Publishing Company Inc.
Vol. 229.— 2025.— Article number 112555, 8 p.
Other Authors: Bedenko S. V. Sergey Vladimirovich, Vlaskin G. N. Gennadiy Nikolaevich, Polozkov S. D. Sergey Dmitrievich, Orlov A. A. Aleksey Alekseevich, Vega-Carrillo H. R. Hector Rene
Summary:Title screen
To ensure long-term and trouble-free operation, the reactor fuel is modified by introducing various homogeneous and heterogeneous additives. This modified fuels exhibit satisfactory performances under irradiation at elevated temperatures and burnup levels. However, the challenges related to radiation safety during the handling of fresh and spent nuclear fuel remain unresolved. In this study, neutron emission spectra and effective doses for VVER-1200 reactor fuel containing a heterogenous distribution of natGd2O3 and Am2O3, microspheres were calculated. Unlike in the case of homogenous variants, this design did not reduce the thermal conductivity of the fuel and positively affected the core neutronics and thermophysics. Comparing the radiation characteristics of fresh FAs revealed a considerable increase in the neutron (more than 3.7∙102 times at a distance of 10 cm from the FA) and photonic (about 104 times) components of Am–containing fuel compared to U and U–Gd fuels. The yield and effective dose of neutrons emitted from spent Am-containing fuel is two times higher than that of uranium–based fuels. When calculating the dose, it is important to consider the energy spectrum of (α, n) neutrons in Am2O2 microcapsules. The findings of this study provide insights into the development of procedures and regulations for manufacturing and post-irradiation handling of new fuel in reactors
Текстовый файл
AM_Agreement
Language:English
Published: 2025
Subjects:
электронный ресурс
труды учёных ТПУ
reactor fuel
radiation safety
neutron emission spectra
Online Access:https://doi.org/10.1016/j.radphyschem.2025.112555
Format: Electronic Book Chapter
KOHA link:https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=678445

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