ML102710253
| ML102710253 | |
| Person / Time | |
|---|---|
| Site: | Surry  |
| Issue date: | 09/28/2010 |
| From: | Geoffrey Miller Dominion Resources Services |
| To: | Cotton K Plant Licensing Branch II |
| Cotton K, NRR/DORL, 301-415-1438 | |
| References | |
| Download: ML102710253 (3) | |
Text
From:
Cotton, Karen Sent:
Tuesday, September 28, 2010 11:00 AM To:
Thorpe, April
Subject:
FW: Response to Surveillance capsule questions Please put this in ADAMS.
- Thanks, Karen Karen Cotton NRR/DORL PM - Surry Units 1 and 2 Karen.Cotton@nrc.gov 301-415-1438 From: Gary D Miller [1]
Sent: Tuesday, September 28, 2010 8:59 AM To: Cotton, Karen
Subject:
Response to Surveillance capsule questions
- Karen, Regarding the first question below:
Q1 - After comparing the 10-16-09 submittal to an earlier submittal, ML0223902830, they also show capsule V at Unit 1 withdrawn in 1986 (6.0 EFPY) at fluence of 1.94 x 1019. The EFPY seems wrong, they only gained 3 EFPY between 1978 and 1986?
The EFPY values in question listed in Table 4.1-12 were historical values from previously submitted reports. As part of performing fluence analyses for license renewal, revised EFPY values were calculated based on the most recent compilation of historical fuel management data. The EFPY value for each removed capsule is presented below. To date, four (4) capsules (T, W, V, and X) have been removed from both SPS Unit 1, and four capsules (X, W, V, and Y) have been removed from SPS Unit 2.
SPS Unit 1 Capsule Identification EFPY Capsule Fluence T
1.1 2.81E18 n/cm2 W
3.5 4.31E18 n/cm2 V
8.2 1.94E19 n/cm2 X
16.3 1.60E19 n/cm2 SPS Unit 2 Capsule Identification EFPY Capsule Fluence X
1.2 2.97E18 n/cm2 W
3.8 6.36E18 n/cm2 V
8.7 1.89E19 n/cm2
Y 20.8 2.73E19 n/cm2 Regarding the second question below:
Q2 - In addition, the earlier submittal shows capsule X at Unit 1 as being withdrawn in 1997, 15.8 EFPY, but with a fluence of 2.42 x 1019 instead of 15.8 EFPY and fluence of 1.60 x 1019 that is shown in Oct. 26, 2009 submittal.
Response to Q2 Per BAW-2324, April 1998, the fluence on capsule X at Unit 1 (when withdrawn and tested) was 1.599E19 n/cm2. (This rounds to 1.60E19 n/cm2). The UFSAR and earlier correspondence included the projected fluence prior to the withdrawal and testing of capsule X of 2.42E19 n/cm2.
Gary D. Miller, P.E.
Nuclear Licensing and Operations Support Dominion Resources Services, Inc.
(804) 273-2771 or tie-line 8-730-2771 fax (804) 273-3715 gary.d.miller@dom.com CONFIDENTIALITY NOTICE: This electronic message contains information which may be legally confidential and or privileged and does not in any case represent a firm ENERGY COMMODITY bid or offer relating thereto which binds the sender without an additional express written confirmation to that effect. The information is intended solely for the individual or entity named above and access by anyone else is unauthorized. If you are not the intended recipient, any disclosure, copying, distribution, or use of the contents of this information is prohibited and may be unlawful. If you have received this electronic transmission in error, please reply immediately to the sender that you have received the message in error, and delete it. Thank you.
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FW: Response to Surveillance capsule questions Sent Date: 9/28/2010 11:00:06 AM Received Date: 9/28/2010 11:00:06 AM From: Cotton, Karen Created By: Karen.Cotton@nrc.gov Recipients:
April.Thorpe@nrc.gov (Thorpe, April)
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