Deployment of the Terminal Solid Solubility (TSS) Tool for Hydrogen Equivalent Concentration Measurements in Wolsong Unit 2
9th International Conference on CANDU® Maintenance - 2011 December 04-06

Presented at:
9th International Conference on CANDU® Maintenance
2011 December 04-06
Toronto, Canada
Session Title:
Service Provider Improvements Session D3

Anthony Hamilton (Kinectrics Inc.)
Steve Burany (Kinectrics Inc.)
Andrew Wallace (Kinectrics Inc.)
Kwang-il Kim (Korea Hydro & Nuclear Power Company)
Moonho Park (Gnest Inc.)


The Terminal Solid Solubility (TSS) Tool was originally conceived at Kinectrics and jointly developed for on-reactor use with OPG. The TSS Tool provides an indirect measurement of the total hydrogen isotope concentration in Zr-2.5Nb pressure tubes by measuring the temperature at which zirconium hydrides dissolve (TSSd) and precipitate (TSSp) during controlled heating and cooling cycles. From 2003 to 2009, the TSS Tool was used in a total of 20 inspection campaigns in OPG and Bruce Power reactors. It was recognized that the TSS Tool offered many advantages and was responsible for a significant reduction in radiation dose to station personnel.

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