High-temperature oxidation of Zircaloy in hydrogen-steam mixtures. [PWR; BWR]
Abstract
Oxidation rates of Zircaloy-4 cladding tubes have been measured in hydrogen-steam mixtures at 1200 to 1700/sup 0/C. For a given isothermal oxidation temperature, the oxide layer thicknesses have been measured as a function of time, steam supply rate, and hydrogen overpressure. The oxidation rates in the mixtures were compared with similar data obtained in pure steam and helium-steam environments under otherwise identical conditions. The rates in pure steam and helium-steam mixtures were equivalent and comparable to the parabolic rates obtained under steam-saturated conditions and reported in the literature. However, when the helium was replaced with hydrogen of equivalent partial pressure, a significantly smaller oxidation rate was observed. For high steam-supply rates, the oxidation kinetics in a hydrogen-steam mixture were parabolic, but the rate was smaller than for pure steam or helium-steam mixtures. Under otherwise identical conditions, the ratio of the parabolic rate for hydrogen-steam to that for pure steam decreased with increasing temperature and decreasing steam-supply rate.
- Authors:
- Publication Date:
- Research Org.:
- Argonne National Lab., IL (USA); Electric Power Research Inst., Palo Alto, CA (USA)
- OSTI Identifier:
- 6137822
- Report Number(s):
- CONF-820662-6
ON: DE83014687
- DOE Contract Number:
- W-31-109-ENG-38
- Resource Type:
- Conference
- Resource Relation:
- Conference: 6. international conference on zirconium in the nuclear industry, Vancouver, BC, Canada, 28 Jun 1982
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 22 GENERAL STUDIES OF NUCLEAR REACTORS; 21 SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS; 36 MATERIALS SCIENCE; BWR TYPE REACTORS; REACTOR CORE DISRUPTION; REACTOR MATERIALS; PWR TYPE REACTORS; OXIDATION; ZIRCALOY 4; FUEL CANS; HYDROGEN; REACTOR CORES; REACTOR SAFETY; STEAM; URANIUM DIOXIDE; ACCIDENTS; ACTINIDE COMPOUNDS; ALLOYS; CHALCOGENIDES; CHEMICAL REACTIONS; ELEMENTS; MATERIALS; NONMETALS; OXIDES; OXYGEN COMPOUNDS; REACTOR ACCIDENTS; REACTOR COMPONENTS; REACTORS; SAFETY; TIN ALLOYS; URANIUM COMPOUNDS; URANIUM OXIDES; WATER COOLED REACTORS; WATER MODERATED REACTORS; ZIRCALOY; ZIRCONIUM ALLOYS; ZIRCONIUM BASE ALLOYS; 220900* - Nuclear Reactor Technology- Reactor Safety; 210100 - Power Reactors, Nonbreeding, Light-Water Moderated, Boiling Water Cooled; 210200 - Power Reactors, Nonbreeding, Light-Water Moderated, Nonboiling Water Cooled; 360105 - Metals & Alloys- Corrosion & Erosion
Citation Formats
Chung, H M, and Thomas, G R. High-temperature oxidation of Zircaloy in hydrogen-steam mixtures. [PWR; BWR]. United States: N. p., 1982.
Web.
Chung, H M, & Thomas, G R. High-temperature oxidation of Zircaloy in hydrogen-steam mixtures. [PWR; BWR]. United States.
Chung, H M, and Thomas, G R. 1982.
"High-temperature oxidation of Zircaloy in hydrogen-steam mixtures. [PWR; BWR]". United States. https://www.osti.gov/servlets/purl/6137822.
@article{osti_6137822,
title = {High-temperature oxidation of Zircaloy in hydrogen-steam mixtures. [PWR; BWR]},
author = {Chung, H M and Thomas, G R},
abstractNote = {Oxidation rates of Zircaloy-4 cladding tubes have been measured in hydrogen-steam mixtures at 1200 to 1700/sup 0/C. For a given isothermal oxidation temperature, the oxide layer thicknesses have been measured as a function of time, steam supply rate, and hydrogen overpressure. The oxidation rates in the mixtures were compared with similar data obtained in pure steam and helium-steam environments under otherwise identical conditions. The rates in pure steam and helium-steam mixtures were equivalent and comparable to the parabolic rates obtained under steam-saturated conditions and reported in the literature. However, when the helium was replaced with hydrogen of equivalent partial pressure, a significantly smaller oxidation rate was observed. For high steam-supply rates, the oxidation kinetics in a hydrogen-steam mixture were parabolic, but the rate was smaller than for pure steam or helium-steam mixtures. Under otherwise identical conditions, the ratio of the parabolic rate for hydrogen-steam to that for pure steam decreased with increasing temperature and decreasing steam-supply rate.},
doi = {},
url = {https://www.osti.gov/biblio/6137822},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Wed Sep 01 00:00:00 EDT 1982},
month = {Wed Sep 01 00:00:00 EDT 1982}
}