[Global] Accumulator dumping

Thu Jul 27 08:17:27 EDT 2023

Good morning,
During our 2R22 outage, operations vented the accumulators to the cavity when it was flooded up. We didn't have any airborne issues, but the dose rates around the cavity were 50% higher than normal.

Michelle Williams
Radiation Protection Manager
Southern Nuclear<https://www.southernnuclear.com/> | Radiation Protection Vogtle 1&2
miwillia at southernco.com<mailto:miwillia at southernco.com> | O: 706.848.4236 | C: 919.770.7138
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From: Global <global-bounces at list.rpalara.org> On Behalf Of HOWARD David (Framatome)
Sent: Wednesday, July 26, 2023 12:48 PM
To: global at list.rpalara.org
Subject: [Global] Accumulator dumping

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________________________________
From: Weirich, Kevin Allen <kaweirich at tva.gov<mailto:kaweirich at tva.gov>>
Sent: Wednesday, July 26, 2023 5:31 AM
To: Global <global-bounces at list.rpalara.org<mailto:global-bounces at list.rpalara.org>>
Subject: Accumulator dumping

During the outage, we have had a first time issues with accumulator valve testing (Accumulator dumps into the cavity when it is full of water) resulting in airborne conditions in upper containment.

Does anyone else have this issue?

If so do you restrict access during accumulator dump activities in case of airborne conditions?

Sincerely,
Kevin Weirich
Watts Bar Nuclear - ALARA Specialist
[TVA logo]
W. 423-365-1382   M. 253-722-9861    E. kaweirich at tva.gov<mailto:kaweirich at tva.gov>
1270 Nuclear Plant Road, Spring City, TN 37381

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