Journal
NUCLEAR ENGINEERING AND TECHNOLOGY
Volume 51, Issue 3, Pages 915-921Publisher
KOREAN NUCLEAR SOC
DOI: 10.1016/j.net.2018.11.015
Keywords
Radiation damage; Displacement; Ni two-step reaction; X-750; Annulus spacer
Categories
Funding
- National Research Foundation of Korea (NRF) - Korean government, the Ministry of Science and ICT [NRF 2018M2A8A4015157]
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Radiation damage due to neutrons has been calculated in Ni-based alloys in Wolsong CANDU reactor environments. Two damage parameters are considered: displacement damage, and transmutation gas production. We used the SPECTER and SRIM computer codes in quantifying radiation damage. In addition, damage caused by Ni two-step reactions was considered. Estimations were made for the annulus spacers in a CANDU reactor that are located axially along a fuel channel and made of Inconel X-750. The calculation results indicate that the transmutation gas production from the Ni two-step reactions is predominant as the effective full power year increases. The displacement damage due to recoil atoms produced from Ni two-step reactions accounts for over 30% out of the total displacement damage. (C) 2018 Korean Nuclear Society, Published by Elsevier Korea LLC.
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