Oxidation Kinetics by Water Vapor of Nuclear Graphite Grade 2114
This report presents measurement results of oxidation rates by water vapor of nuclear graphite grade 2114 manufactured by Mersen, USA. This report completes kinetic study of chronic oxidation of grade 2114, of which partial data were compiled as a Letter Report in July 2017. The research is part of a broader program at Oak Ridge National Laboratory (ORNL) aiming at development of a comprehensive model for chronic oxidation of nuclear graphite in conditions relevant to operation of gas-cooled high-temperature reactors (HTGR). Grade 2114 is the fourth nuclear graphite investigated under this program. Experimental data measured at ORNL were analyzed in collaboration with Dr. Robert Mee (University of Tennessee, Knoxville) and graphite-specific parameters in the oxidation rate equation were determined. It was shown, once again, that the new Boltzmann-enhanced Langmuir-Hinshelwood (BLH) model recently proposed by ORNL is a better choice than the classical Langmuir-Hinshelwood (LH) model for prediction of chronic oxidation of graphite components during normal operation of HTGRs.
- Research Organization:
- Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- AC05-00OR22725
- OSTI ID:
- 1506802
- Report Number(s):
- ORNL/TM-2018/1057
- Country of Publication:
- United States
- Language:
- English
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