Conference Proceedings Paper
EXPERIMENTAL AND THERMODYNAMIC STUDIES OF BERYLLIUM REPLACEMENT MATERIALS FOR CANDU® BRAZED JOINTS
39th Annual CNS-CNA Student Conference - 2015 June 01
K. Potter (Royal Military College of Canada)
G. Ferrier (Royal Military College of Canada)
E. Corcoran (Royal Military College of Canada)
Currently, appendages are joined to CANDU® fuel elements via a brazing process, which uses beryllium as the filler material. A potential reduction in the occupational limit on airborne beryllium particulates has motivated research into alternative brazing materials. To this end, the Canadian nuclear industry has funded an initiative to identify and evaluate the suitability of several candidate materials.
This work describes contributions toward the assessment of alternative brazing materials from the Royal Military College of Canada. Thermodynamic modelling was performed to predict the aqueous behaviour of each candidate material in CANDU coolant conditions characteristic of reactor shutdown, and experiments are underway to support modelling predictions. These results will assist in selecting a suitable replacement material for beryllium.
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