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http://dx.doi.org/10.14773/cst.2014.13.4.145

Effect of Ni/Fe Ion Concentration Ratio on Fuel Cladding Crud Deposition  

Baek, S.H. (Nuclear Materials Safety Research Division, Korea Atomic Energy Research Institute)
Kim, U.C. (Nuclear Materials Safety Research Division, Korea Atomic Energy Research Institute)
Shim, H.S. (Nuclear Materials Safety Research Division, Korea Atomic Energy Research Institute)
Lim, K.S. (Nuclear Materials Safety Research Division, Korea Atomic Energy Research Institute)
Hur, D.H. (Nuclear Materials Safety Research Division, Korea Atomic Energy Research Institute)
Publication Information
Corrosion Science and Technology / v.13, no.4, 2014 , pp. 145-151 More about this Journal
Abstract
The objectives of this study are to investigate the effect of the concentration ratios of Ni and Fe ions on crud deposition onto the fuel cladding surface in the simulated primary environments of a pressurized water reactor. Crud deposition tests were conducted in the Ni and Fe concentration ratios of 20:20 ppm, 39:1 ppm and 1:39 ppm at $325^{\circ}C$ for 14 days. In the case of the same Ni and Fe ion ratio (20:20), nickel ferrite with a polyhedral shape was formed. Nickel oxide deposits with a needle shape were formed in the condition of high Ni to Fe ion ratio (39:1), While polyhedral iron oxide and needle-like nickel oxide formed in the condition of low Ni to Fe ion ratio (1:39). The amount of deposits increased, when Fe oxides were formed. This indicates that Fe rich oxides stimulated Ni oxide deposition.
Keywords
axial offset anomaly; ni and fe ion concentration; crud deposition; primary water chemistry;
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  • Reference
1 W. Y. Maeng, Proceedings of the Int'l Conference on Water Chemistry of Nuclear Reactor Systems, NPC, Jeju (2008).
2 W. Byers, Proceedings of the Int'l Conference on Water Chemistry of Nuclear Reactor Systems, NPC, Jeju (2006).
3 H. Ocken, Cobalt reduction guidelines, EPRI Report NP-6737, EPRI, Palo Alto, CA (1990).
4 A. Tigeras and E. Decossin, Proceedings of the Int'l Conference on Water Chemistry of Nuclear Reactor Systems, p. 1661, NPC, San Francisco (2004).
5 B. Beverskog, Proceedings of the Int'l Conference on Water Chemistry of Nuclear Reactor Systems, NPC, Jeju (2006).
6 J. Henshaw, Proceedings of the Int'l Conference on Water Chemistry of Nuclear Reactor Systems, NPC, Jeju (2006).
7 K. G. Turnage, Proceedings of the Int'l Conference on Water Chemistry of Nuclear Reactor Systems, p. 204, NPC, San Francisco (2004).
8 P. Bennett, Proceedings of the Int'l Conference on Water Chemistry of Nuclear Reactor Systems, NPC, Jeju (2006).
9 H. Kawamura, Proceedings of the Int'l Conference on Water Chemistry of Nuclear Reactor Systems, NPC, Berlin (2008).
10 K. Fruzzetti, Pressurized Water Reactor Primary Water Chemistry Guidelines, EPRI Report TR-1014986, Vol. 1, Rev. 6, p. 2-1, EPRI (2007).
11 I. K. Choi, Development of Analytical Techniques for Characteristics of CRUD, KAERI Report CR-270, p. 49, KAERI (2007).