NDLI: Characterization of corrosion products deposited on fuel rods in a boiling water reactor (BWR-6) plant using hydrogen water chemistry (HWC)

Content Provider	Springer Nature Link
Author	Tsai, Tsuey Lin Lin, Tzung Yi Su, Te Yen Wen, Tung Jen Men, Lee Chung
Copyright Year	2013
Abstract	The objective of this paper was to characterize the corrosion products deposited on fuel cladding surfaces under hydrogen water chemistry (HWC) conditions in the boiling water reactor unit of a nuclear power plant. Inductively coupled plasma-optical emission spectroscopy and gamma spectrometry were used to determine the elemental composition and radioactivity along the fuel rods. Scanning electron microscopy/energy dispersive X-ray spectroscopy was used to evaluate crud morphology and X-ray diffraction analysis was employed to determine the crystalline phase. Most of the iron in the crud comprised irregular shapes and flakes, with a number of crystallites (e.g. small quantities of ferrites, MnFe$_{2}$O$_{4}$). The major constituent of the outer layer was a loosely attached, stable form of hematite (α-Fe$_{2}$O$_{3}$). The amount of deposition on the fuel rods following the fourth fuel cycle of HWC (~1.0 mg cm$^{−2}$) was significantly greater than after the third cycle, due to extended burn-up time. In addition, the radioactivity ratio of $^{58}$Co to $^{60}$Co was lower for EOC22 than for EOC21, due to a longer storage period in the spent fuel pool. No apparent changes were observed in the characteristics (composition or oxidizing nature) of crud in the fuel bundles. Finally, no direct negative impact was observed on the fuel cladding surfaces following four fuel cycles of HWC, compared with normal water chemistry conditions.
Starting Page	1235
Ending Page	1244
Page Count	10
File Format	PDF
ISSN	02365731
Journal	Journal of Radioanalytical and Nuclear Chemistry
Volume Number	298
Issue Number	2
e-ISSN	15882780
Language	English
Publisher	Springer Netherlands
Publisher Date	2013-04-02
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Crud Corrosion products Fuel assembly Hydrogen water chemistry (HWC) Normal water chemistry (NWC) Hematite (α-Fe$_{2}$O$_{3}$) Nuclear Chemistry Physical Chemistry Nuclear Physics, Heavy Ions, Hadrons Diagnostic Radiology Inorganic Chemistry
Content Type	Text
Resource Type	Article
Subject	Spectroscopy Pollution Health, Toxicology and Mutagenesis Radiology, Nuclear Medicine and Imaging Analytical Chemistry Public Health, Environmental and Occupational Health Nuclear Energy and Engineering

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