ML120320381
| ML120320381 | |
| Person / Time | |
|---|---|
| Site: | Seabrook  |
| Issue date: | 02/07/2012 |
| From: | John Lamb Plant Licensing Branch 1 |
| To: | Freeman P, O'Keefe M NextEra Energy Seabrook |
| Lamb J, NRR/DORL, 301-415-3100 | |
| References | |
| TAC ME7207 | |
| Download: ML120320381 (3) | |
Text
UNITED STATES NUCLEAR REGULATORY COMMISSION WASHINGTON, D.C. 20555-0001 February 7, 2012 Mr. Paul Freeman Site Vice President c/o Michael O'Keefe Seabrook Station NextEra Energy Seabrook, LLC P.O. Box 300 Seabrook, NH 03874
SUBJECT:
SEABROOK STATION, UNIT 1 - REQUEST FOR ADDITIONAL INFORMATION REGARDING THE 2011 STEAM GENERATOR TUBE INSPECTIONS (TAC NO. ME7207)
Dear Mr. Freeman:
By letter dated September 19, 2011, (Agencywide Documents Access and Management System Accession Number ML11266A008), NextEra Energy Seabrook, LLC (the licensee) submitted information summarizing the results of the 2011 steam generator tube inspections at Seabrook Station, Unit 1 (Seabrook). These inspections were performed during the fourteenth refueling outage.
The U.S. Nuclear Regulatory Commission (NRC) staffs request for additional information (RAI) is enclosed. A draft of these questions was previously sent, via email on January 31,2012 (ADAMS Accession No. ML120310407), to Mr. Paul Willoughby of your staff, to ensure that the licensee understood the questions and their regulatory basis, and to verify that the information was not on the docket. Mr. Willoughby agreed that NextEra would respond to the RAI within 30 days of the date of this letter.
If you have questions, you can contact me at 301-415-3100 and/or John.Lamb@nrc.gov.
G. Lamb, Senior Project Manager I
t Licensing Branch 1-2
. ision of Operating Reactor Licensing Office of Nuclear Reactor Regulation Docket No. 50-443
Enclosure:
Request for Additional Information cc w/encl: Distribution via Listserv
REQUEST FOR ADDITIONAL INFORMATION 2011 STEAM GENERATOR TUBE INSPECTIONS NEXTERA ENERGY SEABROOK. LLC SEABROOK STATION, UNIT 1 DOCKET NUMBER: 50-443 By letter dated September 19, 2011, (Agencywide Documents Access and Management System Accession Number ML11266A008), NextEra Energy Seabrook, LLC (the licensee) submitted information summarizing the results of the 2011 steam generator (SG) tube inspections at Seabrook Station, Unit 1 (Seabrook). These inspections were performed during refueling outage (RFO) 14. In order to complete its review, the U.S. Nuclear Regulatory Commission (NRC) staff requests the following additional information:
- 1.
Page 1, Section 1 - Please clarify whether the indication of axial outside diameter (00) stress-corrosion cracking (SCC) detected in 2009 was both in and below the expansion transition region, or just below the expansion transition region.
- 2.
Page 1, Section 2 - Please clarify whether the 100-percent inspection of previously reported wear indications included all wear indications (and these were examined from 3-inches above the wear scar to 3-inches below the wear scar) or whether it just included previously reported wear indications located from 3-inches above the top of the tubesheet to 3-inches below the top of the tubesheet.
- 3.
Page 4 - Please clarify the difference between the codes NR and INR referenced in Table 2, which presumably stand for "not reportable" and "indication not reportable,"
respectively.
- 4.
Page 4, Table 2 - Please discuss whether all locations where potential loose part signals were detected were inspected visually to confirm the presence of a loose part.
Please clarify when the NOD [no detectable degradation] and INR [indication not reportable] codes are used for dispositioning a location where a previous PLP [possible loose part] call was made (SG B, row 3, column 104 and SG C, row 40, column 92).
- 5.
Page 5, Section 7 - Please clarify what is meant by the statement that 00 and primary water SCC are not of concern for operation until RFO 15.
- 6.
Page 6 - Please confirm that the foreign object referenced in the last sentence is the same metal nail that is referenced on page 3. If it is not, please clarify the history of the foreign object on page 6.
Enclosure
February 7,2012 Mr. Paul Freeman Site Vice President c/o Michael O'Keefe Seabrook Station NextEra Energy Seabrook, LLC P.O. Box 300 Seabrook, NH 03874
SUBJECT:
SEABROOK STATION, UNIT 1 - REQUEST FOR ADDITIONAL INFORMATION REGARDING THE 2011 STEAM GENERATOR TUBE INSPECTIONS (TAC NO. ME7207)
Dear Mr. Freeman:
By letter dated September 19, 2011, (Agencywide Documents Access and Management System Accession Number ML11266A008), NextEra Energy Seabrook, LLC (the licensee) submitted information summarizing the results of the 2011 steam generator tube inspections at Seabrook Station, Unit 1 (Seabrook). These inspections were performed during the fourteenth refueling outage.
The U.S. Nuclear Regulatory Commission (NRC) staffs request for additional information (RAI) is enclosed. A draft of these questions was previously sent, via email on January 31, 2012 (ADAMS Accession No. ML120310407), to Mr. Paul Willoughby of your staff, to ensure that the licensee understood the questions and their regulatory basis, and to verify that the information was not on the docket. Mr. Willoughby agreed that NextEra would respond to the RAI within 30 days of the date of this letter.
If you have questions, you can contact me at 301-415-3100 and/or John.Lamb@nrc.gov.
Sincerely,
/raj John G. Lamb, Senior Project Manager Plant Licensing Branch 1-2 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation Docket No. 50-443
Enclosure:
Request for Additional Information cc w/encl: Distribution via Listserv DISTRIBUTION:
PUBLIC LPLI-2 R/F RidsAcrsAcnw_MailCTR Resource RidsNrrDorlDpr Resource RidsNrrDorlLpl1-2 Resource RidsRgn1 MailCenter Resource RidsNrrDeEsgb Resource RidsNrrPMSeabrook Resource RidsNrrLAABaxter Resource RidsOgcRp Resource REnnis, NRR/DORL ADAMS Accession No.: ML120320381
- via memorandum
- via email OFFICE LPL 1-2/PM LPL 1-2/LA ESGB/BC LPL 1
=====;1 1-2/PM NAME Jlamb ABaxter **
GKulesa*
w/comment DATE 2/7/12 2/4/12 01130/2012 OFFICIAL RECORD COpy