Corrosion Science and Technology

The Corrosion Science Society of Korea (한국부식방식학회)
권호 표지
DOI QR코드

DOI QR Code

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

핵연료 피복관 부식생성물 부착에 관한 Ni/Fe 이온 농도비의 영향

  • 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)
  • 백승헌 (한국원자력연구원 원자력재료안전연구부) ;
  • 김우철 (한국원자력연구원 원자력재료안전연구부) ;
  • 심희상 (한국원자력연구원 원자력재료안전연구부) ;
  • 임경수 (한국원자력연구원 원자력재료안전연구부) ;
  • 허도행 (한국원자력연구원 원자력재료안전연구부)
  • Received : 2014.06.05
  • Accepted : 2014.08.28
  • Published : 2014.08.31
Download PDF
⟨ Previous Next ⟩

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

References

  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. J. Henshaw, Proceedings of the Int'l Conference on Water Chemistry of Nuclear Reactor Systems, NPC, Jeju (2006).
  6. K. G. Turnage, Proceedings of the Int'l Conference on Water Chemistry of Nuclear Reactor Systems, p. 204, NPC, San Francisco (2004).
  7. P. Bennett, Proceedings of the Int'l Conference on Water Chemistry of Nuclear Reactor Systems, NPC, Jeju (2006).
  8. B. Beverskog, 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).

Cited by

  1. Sampling and Analysis of PWR Primary Cooling System Corrosion Products Using an EPMA vol.207, pp.5, 2014, https://doi.org/10.1080/00295450.2020.1805250