ML11161A001
| ML11161A001 | |
| Person / Time | |
|---|---|
| Site: | Prairie Island  |
| Issue date: | 04/20/2011 |
| From: | - No Known Affiliation |
| To: | Thomas Wengert Plant Licensing Branch III |
| References | |
| Download: ML11161A001 (6) | |
Text
1 NRR-PMDAPEm Resource From:
DiPasquale, Sam J. [Sam.DiPasquale@xenuclear.com]
Sent:
Wednesday, April 20, 2011 5:32 PM To:
Wengert, Thomas Cc:
Ricker, Jeffrey; Vincent, Dale M.
Subject:
RE: Prairie Island NGP Unit 2 - Request for Clarification of 180-Day SG Tube Inspection Report (TAC No. ME5085)
Attachments:
PINGP response to NRC SG report questions.pdf
- Tom, Per your request, I have attached PINGPs response to your questions below.
Please let me know if you have any additional questions.
- Regards, Sam Sam J. DiPasquale, P.E.
Xcel Energy l Responsible By Nature Senior Licensing Engineer 1717 Wakonade Drive East, Welch, MN 55089 P: 651.388.1121x7350 F: 612.330.6247 E: sam.dipasquale@xcelenergy.com From: Wengert, Thomas [1]
Sent: Monday, March 28, 2011 10:12 AM To: Vincent, Dale M.
Subject:
Prairie Island NGP Unit 2 - Request for Clarification of 180-Day SG Tube Inspection Report (TAC No. ME5085)
- Dale, The NRC staff is reviewing the Prairie Island NGP 2010 Unit 2 180-Day Steam Generator Tube Inspection Report, submitted by letter dated November 12, 2010 (ADAMS Accession No. ML103190514), and request the following clarifications in order to complete the review:
- 1. Please confirm that Tables 3 through 20 list all of the indications detected during the 2010 outage (e.g., there were no indications sized with a rotating probe that were left in service).
- 2. Please confirm that no degradation was observed during the secondary side inspections and the plug inspections.
- 3. Please discuss the nature of the single axial indication in the tube in row 1, column 8 in steam generator 21. Has cracking in the row 1 and 2 u-bend regions been observed since the in-situ stress relieving of this region?
2
- 4. For the tube that was in-situ pressure tested, please discuss whether any leakage was observed and whether there was any change in the eddy current signal (other than that attributed to test repeatability) as a result of the in-situ pressure test (if a post in-situ pressure test inspection was performed).
Please provide an email response to the above questions, or alternately I can arrange a teleconference with the technical staff to discuss.
Tom Wengert Project Manager - Prairie Island NRR/DORL/LPLIII-1 (301) 415-4037
Hearing Identifier:
NRR_PMDA Email Number:
73 Mail Envelope Properties (71AC1869DEB82E47AAC75C450F60546A0DC137E28E)
Subject:
RE: Prairie Island NGP Unit 2 - Request for Clarification of 180-Day SG Tube Inspection Report (TAC No. ME5085)
Sent Date:
4/20/2011 5:32:14 PM Received Date:
4/20/2011 5:32:23 PM From:
DiPasquale, Sam J.
Created By:
Sam.DiPasquale@xenuclear.com Recipients:
"Ricker, Jeffrey" <Jeffrey.Ricker@xenuclear.com>
Tracking Status: None "Vincent, Dale M." <Dale.Vincent@xenuclear.com>
Tracking Status: None "Wengert, Thomas" <Thomas.Wengert@nrc.gov>
Tracking Status: None Post Office:
enex04 Files Size Date & Time MESSAGE 2116 4/20/2011 5:32:23 PM PINGP response to NRC SG report questions.pdf 738918 Options Priority:
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