ML072260087
| ML072260087 | |
| Person / Time | |
|---|---|
| Site: | Harris  |
| Issue date: | 08/21/2007 |
| From: | Maurice Heath NRC/NRR/ADRO/DLR/RLRA |
| To: | Carolina Power & Light Co |
| Heath, M, NRR/DLR/RLRA, 415-3137 | |
| References | |
| Download: ML072260087 (12) | |
Text
August 21, 2007 LICENSEE: Carolina Power & Light Company FACILITY:
Shearon Harris Nuclear Power Plant, Unit 1
SUBJECT:
SUMMARY
OF TELEPHONE CONFERENCE CALL HELD ON JULY 19, 2007, BETWEEN THE U.S. NUCLEAR REGULATORY COMMISSION AND CAROLINA POWER & LIGHT COMPANY, CONCERNING DRAFT REQUESTS FOR ADDITIONAL INFORMATION PERTAINING TO THE SHEARON HARRIS NUCLEAR POWER PLANT, UNIT 1, LICENSE RENEWAL APPLICATION The U.S. Nuclear Regulatory Commission (NRC or the staff) and representatives of Carolina Power & Light Company held a telephone conference call on July 19, 2007, to discuss and clarify the staffs draft requests for additional information (D-RAIs) concerning the Shearon Harris Nuclear Power Plant, Unit 1, license renewal application. The telephone conference call was useful in clarifying the intent of the staffs D-RAIs. provides a listing of the participants and Enclosure 2 contains a listing of the D-RAIs discussed with the applicant, including a brief description on the status of the items.
The applicant had an opportunity to comment on this summary.
/RA/
Maurice Heath, Project Manager License Renewal Branch A Division of License Renewal Office of Nuclear Reactor Regulation Docket No. 50-400
Enclosures:
As stated cc w/encls: See next page
OFFICE LA:DLR PM:RLRA:DLR BC:RLRA:DLR NAME IKing via e-mail MHeath DWrona for LLund DATE 08/13/07 08/20/07 08/21/07 TELEPHONE CONFERENCE CALL SHEARON HARRIS NUCLEAR POWER PLANT, UNIT 1 LICENSE RENEWAL APPLICATION LIST OF PARTICIPANTS JULY 19, 2007 PARTICIPANTS AFFILIATIONS Maurice Heath U.S. Nuclear Regulatory Commission (NRC)
Ganesh Cheruvenki NRC Chris Mallner Progress Energy Joseph Terrell Progress Energy DRAFT REQUESTS FOR ADDITIONAL INFORMATION SHEARON HARRIS NUCLEAR POWER PLANT, UNIT 1 LICENSE RENEWAL APPLICATION JULY 19, 2007 The U.S. Nuclear Regulatory Commission (NRC or the staff) and representatives of Carolina Power & Light Company held a telephone conference call on July 19, 2007, to discuss and clarify the following draft requests for additional information (D-RAIs) concerning the Shearon Harris Nuclear Power Plant (HNP), Unit 1 license renewal application (LRA).
D-RAI-B.2.17 (A) The applicant states that the surveillance capsule that is to be withdrawn during the 16th refueling outage would have been exposed to a neutron fluence value that is equivalent to the peak reactor pressure vessel (RPV) fluence at 55 effective full power year (EFPY).
Please confirm this statement. The staff requests that the applicant provide the following information related to this test:
(1) Lead factor of the surveillance capsule (2) Identification number of the capsule, and (3) Heat number of the surveillance material in the capsule (B) Program element 6, item 2 of aging management program (AMP) B.2.17 states that the applicant intends to test one surveillance capsule after the 16th refueling outage. The staff requests that the applicant submit the following information that pertains to the test:
(1) The projected refueling outage of withdrawal (2) Projected capsule neutron fluence value at the time of withdrawal (3) Corresponding EFPY for the peak RPV fluence to equal the capsule fluence (4) The identification number of the capsule, and (5) Heat number of the surveillance material in the capsule (C) The staff requests that the applicant confirm that the withdrawal schedule of the final two capsules for the extended period of operation is consistent with the requirements, specifically the limitations on lead factor, specified in paragraph 7.6.2 of the American Society of Testing Materials E 185 (ASTM E 185), Conducting Surveillance Tests for Light-Water Cooled Nuclear Power Reactor Vessels.
(D) Section 5.3.1.6 of the final safety analysis report states that the applicant intends to use two standby capsules with identifications Y and Z for future tests. However, the operating experience Section of AMP B.2.17 indicates that three capsules will remain in the RPV for future tests to manage neutron embrittlement during the extended period of operation. The staff requests that the applicant provide an explanation for this inconsistency.
(E) The staff requests that the applicant include the following statements in the commitment table of the LRA:
(1) The applicant will notify the staff if there is any change in the withdrawal schedules of the surveillance capsules.
(2) If a standby capsule is removed from the RPV without the intent to test it, the capsule will be stored in a manner which maintains it in a condition which would permit its future use, including during the period of extended operation, if necessary.
Discussion: The applicant indicated that the question is clear. This D-RAI will be sent as a formal RAI D-RAI-4.2.3 (Editorial Correction)
In Tables 4.2-2 and 4.2-3 of the LRA, the chemical composition values of elements Copper and Nickel for the surveillance capsule test sample representing the intermediate shell plate (heat number-B4197-2) and the RPVs intermediate shell plate (heat number-B4197-2) are identical.
However, the chemistry factors are different. The staff requests that the applicant add a footnote stating that the chemistry factor for the surveillance capsule test sample representing the intermediate shell plate is derived from the surveillance test data.
Discussion: The applicant indicated that the question is clear. This D-RAI will be sent as a formal RAI D-RAI-4.2.4 The staff requests that the applicant include the following items in Section 4.2.4 of the LRA:
(A) The current pressure-temperature (P-T) limits are valid through 36 EFPY. The P-T limits for the extended period of operation will be managed by using approved fluence calculations when there are changes in power of core design in conjunction with surveillance capsule results.
(B) Any change in P-T curves will be implemented by the license amendment process (i.e.,
modifications of technical specifications) and will meet the requirements of Title 10 of the Code of Federal Regulations Section 50.60 (10 CFR 50.60) and 10 CFR Part 50, Appendix G.
Discussion: The applicant indicated that the question is clear. This D-RAI will be sent as a formal RAI D-RAI-4.2.5 Since the P-T limits for the extended period of operation are not yet developed, the applicant should make a statement in the LRA that they will submit the appropriate analysis for the low temperature overpressure (LTOP) setpoints that will be valid for the license renewal period.
Any change in the LTOP setpoints will be implemented by the license amendment process (i.e.,
modifications of technical specifications) and will meet the requirements of 10 CFR 50.60 and 10 CFR Part 50, Appendix G.
Discussion: The applicant indicated that the question is clear. This D-RAI will be sent as a formal RAI D-RAI-4.2.6 During the audit at the HNP, the staff was informed by the applicant that one reactor vessel nozzle was projected to achieve a neutron fluence greater than 1 x 1017 n/cm2 (E > 1 MeV) at the end of the extended period of operation. This nozzle material was not listed in Tables 4.2-1, 4.2-2 and 4.2-3 of the LRA. According to Table 1V A-2 of NUREG-1801, Revision 1, ferritic materials are subject to neutron embrittlement when they are exposed to neutron fluence greater than 1 x 1017 n/cm2 (E > 1 MeV) at the end of the extended period of operation. Therefore, the staff requests that the applicant provide the following for this nozzle material and its associated welds:
(1) The RTPTS value of the nozzle material and its associated welds per the requirements of Title 10 CFR 50.61.
(2) The adjusted reference temperature value of the nozzle material and its associated welds that will be used for developing pressure-temperature limits per the requirements of 10 CFR Part 50, Appendix G.
(3) The upper shelf energy value of the nozzle material and its associated welds per the requirements of 10 CFR Part 50, Appendix G.
Discussion: The applicant indicated that the question is clear. This D-RAI will be sent as a formal RAI
Letter to Carolina Power & Light Company, from M. Heath, dated August 21, 2007
SUBJECT:
SUMMARY
OF TELEPHONE CONFERENCE CALL HELD ON JULY 19, 2007, BETWEEN THE U.S. NUCLEAR REGULATORY COMMISSION AND CAROLINA POWER & LIGHT COMPANY, CONCERNING DRAFT REQUESTS FOR ADDITIONAL INFORMATION PERTAINING TO THE SHEARON HARRIS NUCLEAR POWER PLANT, UNIT 1, LICENSE RENEWAL APPLICATION DISTRIBUTION:
HARD COPY:
DLR R/F E-MAIL:
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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, NC 27602-1551 Resident Inspector / Harris NPS c/o U. S. Nuclear Regulatory Commission 5421 Shearon Harris Road New Hill, NC 27562-9998 Ms. Margaret A. Force Assistant Attorney General State of North Carolina Post Office Box 629 Raleigh, NC 27602 Public Service Commission State of South Carolina Post Office Drawer 11649 Columbia, SC 29211 Ms. Beverly Hall, Section Chief Division of Radiation Protection N.C. Department of Environment and Natural Resources 3825 Barrett Drive Raleigh, NC 27609-7721 Mr. J. Paul Fulford, Manager Performance Evaluation and Regulatory Affairs PEB 5 Carolina Power & Light Company Post Office Box 1551 Raleigh, NC 27602-1551 Mr. Eric McCartney Plant General Manager Shearon Harris Nuclear Power Plant Carolina Power & Light Company P. O. Box 165, Mail Zone 3 New Hill, NC 27562-0165 Mr. Chris L. Burton Director of Site Operations Carolina Power & Light Company Shearon Harris Nuclear Power Plant Post Office Box 165, Mail Zone 1 New Hill, NC 27562-0165 Mr. Robert P. Gruber Executive Director Public Staff NCUC 4326 Mail Service Center Raleigh, NC 27699-4326 Chairman of the North Carolina Utilities Commission P. O. Box 29510 Raleigh, NC 27626-0510 Mr. Herb Council, Chair Board of County Commissioners of Wake County P. O. Box 550 Raleigh, NC 27602 Mr. Tommy Emerson, Chair Board of County Commissioners of Chatham County P. O. Box 87 Pittsboro, NC 27312 Mr. Thomas J. Natale, Manager Support Services Carolina Power & Light Company Shearon Harris Nuclear Power Plant P. O. Box 165, Mail Zone 1 New Hill, NC 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
Shearon Harris Nuclear Power Plant, Unit 1 cc: Mr. John H. ONeill, Jr.
Shaw, Pittman, Potts & Trowbridge 2300 N Street, NW Washington, DC 20037-1128 Ms. Julie Keys Nuclear Energy Institute 1776 I Street, NW, Suite 400 Washington, DC 20006-2708