Steam Oxidation of FeCrAl and SiC in the Severe Accident Test Station (SATS)

Pint, Bruce A.¹  Unocic, Kinga A.¹  Terrani, Kurt A.¹ 

[1] Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)

关键词: Accident tolerant fuel cladding;    steam oxidation;    FeCrAl;    SiC;   

DOI  :  10.2172/1221738
RP-ID  :  ORNL/LTR--2015/417
PID  :  OSTI ID: 1221738
Others  :  Other: AF5810000
Others  :  NEAF278
Others  :  M3FT-15OR0202342

美国|英语

来源: SciTech Connect

【 摘 要 】

Numerous research projects are directed towards developing accident tolerant fuel (ATF) concepts that will enhance safety margins in light water reactors (LWR) during severe accident scenarios. In the U.S. program, the high temperature steam oxidation performance of ATF solutions has been evaluated in the Severe Accident Test Station (SATS) at Oak Ridge National Laboratory (ORNL) since 2012 [1-3] and this facility continues to support those efforts in the ATF community. Compared to the current UO2/Zr-based alloy fuel system, alternative cladding materials can offer slower oxidation kinetics and a smaller enthalpy of oxidation that can significantly reduce the rate of heat and hydrogen generation in the core during a coolant-limited severe accident [4-5]. Thus, steam oxidation behavior is a key aspect of the evaluation of ATF concepts. This report summarizes recent work to measure steam oxidation kinetics of FeCrAl and SiC specimens in the SATS.