[Global] SG Secondary Side Survey

[Hertz, John-Joseph Michael]

With the water below the top of the tubes, dose rates in the work area aren’t terrible (10-40 mrem/hr), but we control the opening as LHRA due to the accessible conditions inside the handhole. With water above the tubes our work area dose rates are 2-10 mrem/hr in that area.

Thanks,
John Hertz
Radiation Protection / ALARA

Desk: 423-843-6875   Cell: 808-366-0072   Email: jjhertz at tva.gov<mailto:jjhertz at tva.gov>
Sequoyah Nuclear Plant
[TVA logo]
2600 Sequoyah Access Rd, Soddy-Daisy, TN 37379

From: Global <global-bounces at list.rpalara.org> On Behalf Of Coughlin, Joseph J:(Constellation Nuclear)
Sent: Friday, March 17, 2023 10:37 AM
To: global at list.rpalara.org
Subject: [Global] SG Secondary Side Survey

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Morning All,

Am hoping to get some surveys of the SG secondary side while the SG is drained. This outage we are doing some guide vane repairs on top of the SG inside on the 1st, 2nd, and 3rd platforms. We have surveys with the secondary side water level over the tubes, but none when drained. Being challenged based on the schedule to possibly work while drained. Appreciate your time/help.........Thx Joe
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