ML072390509
| ML072390509 | |
| Person / Time | |
|---|---|
| Site: | Harris  |
| Issue date: | 09/05/2007 |
| From: | Vaaler M NRC/NRR/ADRO/DORL/LPLII-2 |
| To: | Duncan R Carolina Power & Light Co |
| Vaaler, Marlayna, NRR/DORL 415-1998 | |
| References | |
| TAC MD5385 | |
| Download: ML072390509 (3) | |
Text
September 5, 2007 Robert J. Duncan II, Vice President Shearon Harris Nuclear Power Plant Carolina Power & Light Company Post Office Box 165, Mail Code: Zone 1 New Hill, North Carolina 27562-0165
SUBJECT:
SHEARON HARRIS NUCLEAR POWER PLANT, UNIT 1 - REQUEST FOR ADDITIONAL INFORMATION REGARDING THE SPRING 2006 REFUELING OUTAGE 13 STEAM GENERATOR TUBE INSPECTIONS (TAC NO. MD5385)
Dear Mr. Duncan:
By letter dated May 5, 2006 (Agencywide Documents Access and Management System (ADAMS) Accession No. ML061360488), Carolina Power & Light Company, the licensee, submitted the steam generator (SG) tube plugging report for Refueling Outage (RFO) 13 in accordance with Technical Specification (TS) Section 4.4.5.5.a. By letter dated April 20, 2007 (ADAMS Accession No. ML071160122), the licensee submitted the 12-month SG tube inservice inspection report for RFO 13 in accordance with TS Sections 4.4.5.5.b. Additional information regarding the SG tube inspections was provided in an inservice inspection report dated August 10, 2006 (ADAMS Accession No. ML062300078).
The Nuclear Regulatory Commission staff has determined that it needs additional information in order to complete its review. As agreed to by your staff, please respond by October 1, 2007, to the enclosed questions, which were sent electronically on August 15, 2007.
Please contact me at 301-415-3178 if you have any questions on this issue.
Sincerely,
/RA/
Marlayna Vaaler, Project Manager Plant Licensing Branch II-2 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation Docket No. 50-400
Enclosure:
As stated cc: See next page
ML071160122), the licensee submitted the 12-month SG tube inservice inspection report for RFO 13 in accordance with TS Sections 4.4.5.5.b. Additional information regarding the SG tube inspections was provided in an inservice inspection report dated August 10, 2006 (ADAMS Accession No. ML062300078).
The Nuclear Regulatory Commission staff has determined that it needs additional information in order to complete its review. As agreed to by your staff, please respond by October 1, 2007, to the enclosed questions, which were sent electronically on August 15, 2007.
Please contact me at 301-415-3178 if you have any questions on this issue.
Sincerely,
/RA/
Marlayna Vaaler, Project Manager Plant Licensing Branch II-2 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation Docket No. 50-400
Enclosure:
As stated cc: See next page Distribution:
PUBLIC RidsNrrDorlLpl2-2 RidsOgcRp RidsNrrDciCsgb RidsNrrPMMVaaler (hardcopy)
RidsRgn2MailCenter RidsAcrsAcnwMailCenter RidsNrrDorlDpr LPL2-2 R/F Leslie Miller RidsNrrLACSola (hardcopy)
ADAMS ACCESSION NUMBER: ML072390509 NRR-088 OFFICE LPL2-2/PM LPL2-2/LA CSGB/BC LPL2-2/BC NAME MVaaler/kac CSola AHiser BMozafari for TBoyce DATE 08 / 31 /07 08 / 31 /07 8/2/2007*
09/ 05 /07
- by memo
Shearon Harris Nuclear Power Plant, Unit 1 cc:
David T. Conley Associate General Counsel II -
Legal Department Progress Energy Service Company, LLC Post Office Box 1551 Raleigh, North Carolina 27602-1551 Resident Inspector/ Harris NPS c/o U. S. Nuclear Regulatory Commission 5421 Shearon Harris Road New Hill, North Carolina 27562-9998 Ms. Margaret A. Force Assistant Attorney General State of North Carolina Post Office Box 629 Raleigh, North Carolina 27602 Public Service Commission State of South Carolina Post Office Drawer 11649 Columbia, South Carolina 29211 Ms. Beverly Hall, Section Chief Division of Radiation Protection N.C. Department of Environment and Natural Resources 3825 Barrett Drive Raleigh, North Carolina 27609-7721 Mr. J. Paul Fulford Manager, Performance Evaluation and Regulatory Affairs PEB 5 Carolina Power & Light Company Post Office Box 1551 Raleigh, North Carolina 27602-1551 Mr. Chris L. Burton Director of Site Operations and Acting Plant General Manager Shearon Harris Nuclear Power Plant Carolina Power & Light Company Post Office Box 165, Mail Zone 1 New Hill, North Carolina 27562-0165 Mr. Robert P. Gruber Executive Director Public Staff NCUC 4326 Mail Service Center Raleigh, North Carolina 27699-4326 Chairman of the North Carolina Utilities Commission Post Office Box 29510 Raleigh, North Carolina 27626-0510 Mr. Tony Gurley, Chair Board of County Commissioners of Wake County P. O. Box 550 Raleigh, North Carolina 27602 Mr. Carl Thompson, Chair Board of County Commissioners of Chatham County P. O. Box 87 Pittsboro, North Carolina 27312 Mr. Thomas J. Natale, Manager Support Services Shearon Harris Nuclear Power Plant Carolina Power & Light Company P. O. Box 165, Mail Zone 1 New Hill, North Carolina 27562-0165 Mr. David H. Corlett, Supervisor Licensing/Regulatory Programs Shearon Harris Nuclear Power Plant Carolina Power & Light Company P. O. Box 165, Mail Zone 1 New Hill, NC 27562-0165 Mr. John H. ONeill, Jr.
Pillsbury Winthrop Shaw Pittman, LLP 2300 N Street NW.
Washington, DC 20037-1128
Enclosure REQUEST FOR ADDITIONAL INFORMATION SHEARON HARRIS NUCLEAR POWER PLANT, UNIT 1 REFUELING OUTAGE 13 STEAM GENERATOR TUBE INSPECTIONS DOCKET NO. 50-400 By letter dated May 5, 2006, Carolina Power & Light Company, the licensee, submitted the steam generator (SG) tube plugging report for Refueling Outage (RFO) 13 in accordance with Technical Specification (TS) Section 4.4.5.5.a. By letter dated April 20, 2007, the licensee submitted the 12-month SG tube inservice inspection report for RFO 13 in accordance with TS Sections 4.4.5.5.b. Additional information regarding the SG tube inspections was provided in an inservice inspection report dated August 10, 2006. Based on the review of the information provided by the licensee, the staff has determined that the following information is needed to complete their review.
1.
On Page A1-2 of the letter dated April 20, 2007, you indicated that 10 tubes with loose part signals at the top of the tubesheet region on the hot-leg side of SG B were examined with a rotating coil. Please discuss the results of these rotating coil exams (i.e., were loose parts present, what were the loose parts, and were the loose parts removed), and discuss the results of any visual examinations in this area.
In addition, were all known foreign objects (other than the foreign object wedged between Tube Row 60 Column 45 (R60C45) and Tube R59C46 in SG A) in all three SGs removed? If not, please discuss what foreign objects were left inservice and the criteria used to determine which foreign objects are acceptable to leave inservice.
2.
Please confirm that the four tubes inspected with a rotating coil in SG A to bound the wedged foreign object were adjacent/nearby to Tubes R60C45 and R59C46 which were plugged.
3.
In the letter dated April 20, 2007, you indicated that one tube with a distorted dent signal around the 9th support plate on the cold-leg side of SG B was examined with a rotating coil. Please discuss whether the signal at this location has changed since the baseline inspection. If so, discuss the reason for the change and the basis for concluding no tube-wall degradation existed at this location.
4.
Please discuss whether the signal of the one tube examined by rotating coil in a slightly restricted area of the tube within the tubesheet in SG B has changed since the baseline inspection. If so, please discuss the reason for the change. In addition, what was the nature of the signal?
5.
In the letter dated April 20, 2007, you indicated that two tubes on the hot-leg side and three tubes on the cold-leg with dent signals, located by the 8th and 9th tube support plates of SG C, were examined with a rotating coil. Please discuss whether the signals at these locations have changed since the baseline inspection. If so, discuss the reason for the changes and the basis for concluding no tube-wall degradation existed at these locations.