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VCSNS Benchmark Dose Rate

VCSNS Benchmark Dose Rate. Average dose rate from 8 locations All locations are general area dose rates around the bottom of the RCS loops No contact or 12” measurements are used Measurements are best when using the stored dose rate data from electronic dosimeters.

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VCSNS Benchmark Dose Rate

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  1. VCSNS Benchmark Dose Rate • Average dose rate from 8 locations • All locations are general area dose rates around the bottom of the RCS loops • No contact or 12” measurements are used • Measurements are best when using the stored dose rate data from electronic dosimeters

  2. History of Benchmark Dose Rate • All outages prior to RF11 HP and Chem used gut feel to decide when RCPs secured, • OR Operations and Outage Management decided for them • Wanted analytical justification to run RCPs as long as possible. • Started with 14 pts general area in loops • 80+% of plant dose came from loops during outage

  3. Benchmark Monitoring Locations

  4. V.C. Summer Nuclear StationRF 10-13 Outage Exposure History RF12 – 109.7 Rem for original scope

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