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Quarterly progress report on the zirconium metal--water oxidation kinetics program sponsored by the NRC Division of Reactor Safety Research, April--June 1977. [BWR; PWR]

Technical Report ·
OSTI ID:7301884
Scoping tests of the effect of steam pressure on the oxidation rate of Zircaloy-4 yielded negative results at 1100/sup 0/C (2012/sup 0/F) for steam at 3.45 MPa (500 psi); problems with reproducibility were encountered at 900/sup 0/C (1652/sup 0/F). Additional experiments in 6.9 MPa (1000 psi) steam are in progress. Measurements of the oxidation rate of Zircaloy-4 specimens in pure oxygen led to the conclusion that hydrogen previously reported present in oxidized specimens had no effect on measured rates of oxidation in steam. Additional in situ tests in the MiniZWOK apparatus confirmed the validity of previous estimates of maximum temperature measurement uncertainties.
Research Organization:
Oak Ridge National Lab., TN (USA)
DOE Contract Number:
W-7405-ENG-26
OSTI ID:
7301884
Report Number(s):
ORNL/NUREG/TM-132
Country of Publication:
United States
Language:
English