Fuel and core design of super LWR with stainless steel cladding

Kazuhiro Kamei, Akifumi Yamaji, Yuki Ishiwatari, Liu Jie, Yoshiaki Oka

Research output: Contribution to conferencePaper

22 Citations (Scopus)

Abstract

An equilibrium core of High Temperature Supercritical-pressure Light Water Reactor, now called Super LWR, has been designed. The fuel assemblies loaded in the peripheral region of the core are cooled with descending flow to achieve a high average coolant core outlet temperature. In the present design, Stainless Steel is used for fuel rod claddings and for structural materials. Gd 2O3 concentration and the fuel load pattern are optimized to reduce fuel enrichment. Watts correlations are used for prediction of heat transfer in the core, which takes into account an improvement of heat transfer for downward flow, different from the Oka-Koshizuka correlation used in the previous design. It is found that the water rods with their downward flow need to be thermally insulated with thin ZrO2 layer to keep the moderator temperature below the pseudo critical temperature. As a result, an average coolant core outlet temperature of 500C is achieved. In addition, the effect of various heat transfer correlations on the cladding surface temperature is evaluated.

Original languageEnglish
Pages2711-2720
Number of pages10
Publication statusPublished - 2005 Dec 1
Externally publishedYes
EventAmerican Nuclear Society - International Congress on Advances in Nuclear Power Plants 2005, ICAPP'05 - Seoul, Korea, Republic of
Duration: 2005 May 152005 May 19

Other

OtherAmerican Nuclear Society - International Congress on Advances in Nuclear Power Plants 2005, ICAPP'05
CountryKorea, Republic of
CitySeoul
Period05/5/1505/5/19

ASJC Scopus subject areas

  • Nuclear Energy and Engineering
  • Safety, Risk, Reliability and Quality

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  • Cite this

    Kamei, K., Yamaji, A., Ishiwatari, Y., Jie, L., & Oka, Y. (2005). Fuel and core design of super LWR with stainless steel cladding. 2711-2720. Paper presented at American Nuclear Society - International Congress on Advances in Nuclear Power Plants 2005, ICAPP'05, Seoul, Korea, Republic of.