Re: Powernet: 10CFR61 Sampling Frequency

Fri, 05 Apr 2013 12:27:28 -0700

SONGS has been using a complete cycle as the time for our class "A" DAW waste for last couple of cycles. We sample using the following schedule:
Unit 2 containment three weeks into refueling outage.
Radwaste & Safety Equipment building between unit 2 and unit 3 refueling.
Unit 3 containment three weeks into refueling outage.
Because of fuel cycle time that process takes ~ 2.5 years we wrote per cycle into our procedure.
We use justification of additional dose to make a full power containment entry and the data from full power sampling does not represent the waste being generated; we almost have no DAW waste being generated inside containment during power operation.

We also only sample our Class A & B resin as it is being packaged which is once every  few years when our spent resin tank are full. We do not have the ability to sample spent resin until we are sluicing into a HIC.. That is also written into our 10CFR61 procedure.

Let me know if you have any questions.
John Joyce
SONGS HP Technical support



From:        "Johnson, Graham T" <[email protected]>
To:        "[email protected]" <[email protected]>
Date:        04/05/2013 12:07 PM
Subject:        Powernet: 10CFR61 Sampling Frequency
Sent by:        [email protected]



Taking into consideration 18 and 24 month fuel cycles, do any stations allow longer periods between 10CFR61 updates greater than the suggested annual update for Cass B/C  waste and biennial update for Class A waste?  
 
(The NRC Branch Technical Position on waste classification 5/11/1983 does allow for analysis extensions greater than two years for Waste Class A and greater than one year for Waste Class B or C.)
 
Thanks,
Graham Johnson, CHP
Radiation Protection General Office
Duke Energy
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