ML102310569
| ML102310569 | |
| Person / Time | |
|---|---|
| Site: | Harris  |
| Issue date: | 09/22/2010 |
| From: | Vaaler M Plant Licensing Branch II |
| To: | Burton C Carolina Power & Light Co |
| Vaaler, Marlayna, NRO/DNRL 415-3178 | |
| References | |
| TAC ME3765 | |
| Download: ML102310569 (3) | |
Text
UNITED STATES NUCLEAR REGULATORY COMMISSION WASHINGTON, D.C. 20555*0001 September 22, 2010 Christopher L. Burton, Vice President Shearon Harris Nuclear Power Plant Carolina Power &Light Company Post Office Box 165, Mail Zone 1 New Hill, North Carolina 27562-0165
SUBJECT:
SHEARON HARRIS NUCLEAR POWER PLANT, UNIT 1 - REQUEST FOR ADDITIONAL INFORMATION REGARDING A RELIEF REQUEST TO DEFER AN AMERICAN SOCIETY OF MECHANICAL ENGINEERS CODE-REQUIRED REPAIR OF A SERVICE WATER SYSTEM WELD UNTIL THE NEXT REFUELING OUTAGE (TAC NO. ME3765)
Dear Mr. Burton:
By letter dated April 15, 2010 (Agencywide Documents Access and Management System Accession No. ML101170058), Carolina Power &Light Company (the licensee), now doing business as Progress Energy Carolinas, Inc., submitted a relief request for the Shearon Harris Nuclear Power Plant, Unit 1 (HNP).
The proposed Relief Request 13R-06 seeks approval to defer the code-required repair of a flaw in an American Society of Mechanical Engineers Code Class 3 piping socket weld in the HNP service water system. The relief request pertains to the third 10-year inspection interval at HNP.
The NRC staff has determined that it needs additional information in order to complete its review of this relief request. Please respond to the enclosed requests by October 1, 2010, in order to facilitate a timely completion of the staff review.
Please contact me at 301-415-3178 if you have any questions on this issue, would like to participate in a conference call, or if you require additional time to submit your responses.
Marlayna Vaaler, Project Manager Plant Licensing Branch 11-2 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation Docket No. 50-400
Enclosure:
Request for Additional Information cc w/enclosure: Distribution via Listserv
REQUEST FOR ADDITIONAL INFORMATION SHEARON HARRIS NUCLEAR POWER PLANT, UNIT 1 RELIEF REQUEST 13R-06 TO DEFER AN ASME CODE REPAIR FOR CODE CLASS 3 PIPING IN THE SERVICE WATER SYSTEM DOCKET NO. 50-400 The U.S. Nuclear Regulatory Commission (NRC) staff has reviewed the information submitted by the licensee and, based on this review, determined the following information is required to complete the evaluation of the subject relief request:
- 1.
Please state the current operating temperature and pressure of service water in the subject pipe for which relief is requested.
- 2.
On page 7, Section 6.4, it is stated that "the maximum pipe stress ratio from Calculation 8050-79 at this location is 0.466." Please explain how 0.466 was obtained.
In addition, state the technical purpose behind it and how this value affects the American Society of Mechanical Engineers Code required flaw evaluation.
- 3.
In addition to the information requested above, please provide a detailed description of the input parameters, assumptions, and methodology used in Calculation 8050-79, such that the NRC staff can perform a comprehensive evaluation of this calculation.
Enclosure
September 22, 2010 Christopher L. Burton, Vice President Shearon Harris Nuclear Power Plant Carolina Power & Light Company Post Office Box 165, Mail Zone 1 New Hill, North Carolina 27562-0165
SUBJECT:
SHEARON HARRIS NUCLEAR POWER PLANT, UNIT 1 - REQUEST FOR ADDITIONAL INFORMATION REGARDING A RELIEF REQUEST TO DEFER AN AMERICAN SOCIETY OF MECHANICAL ENGINEERS CODE-REQUIRED REPAIR OF A SERVICE WATER SYSTEM WELD UNTIL THE NEXT REFUELING OUTAGE (TAC NO. ME3765)
Dear Mr. Burton:
By letter dated April 15, 2010 (Agencywide Documents Access and Management System Accession No. IVIL 101170058), Carolina Power & Light Company (the licensee), now doing business as Progress Energy Carolinas, Inc., submitted a relief request for the Shearon Harris Nuclear Power Plant, Unit 1 (HNP).
The proposed Relief Request 13R-06 seeks approval to defer the code-required repair of a flaw in an American Society of Mechanical Engineers Code Class 3 piping socket weld in the HNP service water system. The relief request pertains to the third 1O-year inspection interval at HNP.
The NRC staff has determined that it needs additional information in order to complete its review of this relief request. Please respond to the enclosed requests by October 1, 2010, in order to facilitate a timely completion of the staff review.
Please contact me at 301-415-3178 if you have any questions on this issue, would like to participate in a conference call, or if you require additional time to submit your responses.
Sincerely, IRA!
Marlayna Vaaler, Project Manager Plant Licensing Branch 11-2 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation Docket No. 50-400
Enclosure:
Request for Additional Information cc w/enclosure: Distribution via Listserv DISTRIBUTION:
PUBLIC LPL2-2 R/F RidsNrrDorlLpl2-2 RidsNrrPMShearonHarris RidsNrrLACSola RidsOgcRp RidsNrrDciCpnb RidsRgn2MailCenter RidsAcrsAcnw_MailCTR ARezai. NRR ADAMS Accession Number' ML102310569 OFFICE LPL2-2/PM LPL2-2/LA CPNB/BC LPL2-2/BC NAME MVaaler BClayton for CSoia TLupold*
DBroaddu5 DATE 9/9/2010 9/7/2010 8/13/2010 9/22/2010 OFFICIAL RECORD COpy