[Global] Emergent Dose Banks During Outages

[Johnson, David S]

From: Global <global-bounces at list.rpalara.org> On Behalf Of Douthwaite, Andrew W via Global
Sent: Monday, August 15, 2022 7:14 AM
To: global at list.rpalara.org
Subject: [Global] Emergent Dose Banks During Outages

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Peers

Salem is looking to benchmark industry best practices for establishing emergent dose banks during refuel outages. My questions are:


  1.  Do you allocate a bank of estimated dose to account for emergent dose during refuel outages? Yes, see below.

     *   If so, how much is it, in Person-Rem?
     *   What percentage of the overall estimate is your bank?  At Browns Ferry by procedure, this number is 7-12% of the estimate.


  1.  How much emergent dose do you typically see during a refuel outage, in Person-Rem? This number has improved dramatically over the last several cycles. Average emergent dose has been 6-12 Rem.

     *   What percentage is that of the overall exposure your station sees during a refuel outage?  This number has fallen within the procedure guidance of 7-12%.



  1.  How do you keep track of your emergent dose?  Any dose that supports discovery window issues or is beyond the scope of the outage.


  1.  Do you use a separate RWP/Task/ALARA Plan for the purposes of tracking emergent dose?  Emergent dose is tracked either through a separate RWP/APR  or Work Order.



"Life is about ups and downs. Hills and valleys. But if you stick with it... everything seems to work out." – Wally West

Andrew Douthwaite | •PSEG Nuclear LLC | Salem Radiation Protection
P.O. Box 236, Hancocks Bridge, NJ 08038-1236

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