2014 RETS-REMP & Groundwater Workshop, June 23-27, 2014, Westin Savannah, Savannah, GA
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Radiochemical Challenges of Two Year Fuel – Follow-up

At the end of the previous operating cycle, Te-123m was identified in primary coolant and liquid waste. It was traced to a partially damaged secondary startup source, which contained small amounts of elemental Sb-123 (Sb-123+d Te-123m +n). The damaged source was relocated to the SFP, but was not encapsulated or removed. Hence, some Te-123m is expected in primary coolant after the recent outage.

My discussion centers on

    1. How to best quantify and report doses from Te-123m in liquid effluents.
    2. The identification of trace levels of Hf-181 in cavity smear samples and SFP water due to the use of unclad Hafnium in the new fuel (difficult to differentiate Hf-181 from Ce-144 at 133 kev)
    3. Tritium continues to climb in the RWST as more and more 2-year fuel enters the core and increases the overall primary Tritium inventory.


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