Method to predict relative hydriding within a group of zirconium

Details Method to predict relative hydriding within a group of zirconium Method to predict relative hydriding within a group of zirconium

1988-06-17

1990-04-10

Wasil, Daniel

Chemistry: analytical and immunological testing

Process or composition for determination of physical state...

Corrosion resistance or power

738656, 376245, G01N 3100, G21C 1700

Patent

active

049160761

ABSTRACT:
An out-of-reactor method for screening to predict relative in-reactor hydriding behavior of zirconium-bsed materials is disclosed. Samples of zirconium-based materials having different composition and/or fabrication are autoclaved in a relatively concentrated (0.3 to 1.0M) aqueous lithium hydroxide solution at constant temperatures within the water reactor coolant temperature range (280.degree. to 316.degree. C.). Samples tested by this out-of-reactor procedure, when compared on the basis of the ratio of hydrogen weight gain to oxide weight gain, accurately predict the relative rate of hyriding for the same materials when subject to in-reactor (irradiated) corrision.

REFERENCES:
patent: 3909370 (1975-09-01), Videm et al.
patent: 4440862 (1984-04-01), Cheng et al.
patent: 4451445 (1984-05-01), Cheng et al.
Kass, "Corrosion and Hydrogen Pickup of Zircaloy in Concentrated Lithium Hydroxide Solutions", Clearinghouse for Fed. Sci. and Tech. Inf., Nat. Bur. Stand., Cat. #WAPD-TM-656, 52 pages (Oct. 1967).
Murgatroyd et al., "Hydriding Zircaloy-2 in Lithium Hydroxide Solutions", J. Nuclear Mat. 23:249.gtoreq.256 (1967).
Van Nostrand's Sci. Encyclopedia, 5th Ed., p. 2367 (1976).

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