Comparative analysis of irradiation conditions for WWER-1000 pressure vessel materials, indicating crucial differences across baffle channels and surfaces.
Characteristics of the fast neutrons field, which influence on WWER-1000 pressure vessel material specimens in reactor baffle channels are determined by calculational method. Irradiation conditions of specimens, surveillance specimens and inner surface of pressure vessel upper shell are compared. It is shown, that the characteristics of the field of neutrons, which influence on specimens in reactor baffle channels, essentially differ from ones, by which inner surface of pressure vessel is irradiated. It is necessary to take into account the obtained data during the designing of WWER-1000 pressure vessel material specimen irradiation experiments in reactor baffle channels.
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Grytsenko et al. (2001) studied this question.
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