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<p class="MsoNormal">Good morning!<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">We have recently seen an increase in Containment atmospheric tritium which coincides with a 2 year core where boron (and lithium) are considerably higher for an extended period BOC than we were accustomed to with any of our 18 month cores.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I would like to know if other PWRs that have made this transition have seen anything similar?<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span style="color:#1F497D">Jerry Barber<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">Lead Scientist - Chemistry <o:p>
</o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">Robinson Nuclear Plant<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">Office 843-951-1496<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">Mobile 843-861-2524<o:p></o:p></span></p>
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<p class="MsoNormal"><b><span style="font-size:8.0pt;color:#00B0F0">2030 and Beyond - Core Values<o:p></o:p></span></b></p>
<p class="MsoNormal"><span style="font-size:8.0pt;color:#00B0F0">S – Standards Adherence<o:p></o:p></span></p>
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<p class="MsoNormal"><b>From:</b> Gainey, Chase <Chase.Gainey@duke-energy.com> <br>
<b>Sent:</b> Monday, July 12, 2021 9:22 AM<br>
<b>To:</b> Barber, Jerry M <Jerry.Barber@duke-energy.com><br>
<b>Subject:</b> Industry CV H3<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Jerry,<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Steve told me to ask you to send out a message to the industry asking about if there has been a similar increase in CV atmosphere tritium following the change to 24 month cycle fuel. He said something about Powernet, and I don’t know what
that is?<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">He has also asked me to write up all we know about this and how we would be able confidently perform a purge in the future with this elevated H3. So I was going to include the calculations you performed this weekend showing the time-weighted
average tritium.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">-Chase<o:p></o:p></p>
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