Ultrasonic Shearwave Measurements of Phase Transitions in Zircalloy at Elevated Temperatures

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1993
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Billson, D.
Hutchins, D.
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Review of Progress in Quantitative Nondestructive Evaluation
Center for Nondestructive Evaluation

Begun in 1973, the Review of Progress in Quantitative Nondestructive Evaluation (QNDE) is the premier international NDE meeting designed to provide an interface between research and early engineering through the presentation of current ideas and results focused on facilitating a rapid transfer to engineering development.

This site provides free, public access to papers presented at the annual QNDE conference between 1983 and 1999, and abstracts for papers presented at the conference since 2001.

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CANDU reactors each contain several hundred zirconium-niobium pressure tubes. The zirconium-niobium alloy is prone to hydrogen (and deuterium) absorption, which can lead to the formation of brittle zirconium hydride platelets within the metal. These hydrides have caused a number of pressure tube leaks, and were the cause of a major failure in one early reactor. They have necessitated the retubing (or the scheduled retubing) of the earliest reactors at a cost of several hundred million dollars each.

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Fri Jan 01 00:00:00 UTC 1993