title: Investigation on exceptional fuel CRUD samples by using radioactivity ratios of cobalt isotopes.
abstract: Elemental analysis and radioactivity measurements were carried out for fuel CRUD samples obtained from a nuclear power plant. Comparisons were made for the relationship between (58)Co radioactivity and Ni content and for the radioactivity ratios of (58)Co to (60)Co of the samples. We found a peculiar radioactivity relationship from one of the samples and were able to further evaluate this based on its unique fuel exchange history. This analysis can be useful to enhance the data credibility of CRUD samples.
authors.affiliation: Nuclear Chemistry Research Division, Korea Atomic Energy Research Institute, 989-111 Daedeok daero, Yuseong-gu, Daejeon 305-353, Republic of Korea.
authors.forename: S-H
authors.initials: SH
authors.lastname: Jung
authors.forename: K J
authors.initials: KJ
authors.lastname: Daub
authors.forename: J-W
authors.initials: JW
authors.lastname: Yeon
authors.forename: K-S
authors.initials: KS
authors.lastname: Choi
authors.forename: J
authors.initials: J
authors.lastname: Choi
authors.forename: H
authors.initials: H
authors.lastname: Yang
authors.forename: D-H
authors.initials: DH
authors.lastname: Lee
authors.forename: K
authors.initials: K
authors.lastname: Song
mesh_terms: D000465:Algorithms; D003036:Cobalt Isotopes / Q000032:analysis*; D003252:Construction Materials / Q000032:analysis*; D004867:Equipment Design; D019544:Equipment Failure Analysis; D055848:Nuclear Power Plants / Q000295:instrumentation*; D011834:Radiation Monitoring / Q000295:instrumentation* / Q000379:methods*; D011874:Radiometry; D015203:Reproducibility of Results; D056910:Republic of Korea; D012680:Sensitivity and Specificity
chemical_list: D003036:Cobalt Isotopes
keywords: (58)Co; (60)Co; Data credibility; Elemental analysis; Fuel CRUD; Radioactivity