ML050910203
| ML050910203 | |
| Person / Time | |
|---|---|
| Site: | Brunswick  |
| Issue date: | 04/01/2005 |
| From: | Mitra S NRC/NRR/DRIP/RLEP |
| To: | Carolina Power & Light Co |
| Mitra, SK, NRR/DRIP/RLEP, 415-2783 | |
| References | |
| TAC MC4641, TAC MC4642 | |
| Download: ML050910203 (9) | |
Text
April 1, 2005 LICENSEE:
Carolina Power & Light, Company FACILITY:
Brunswick Steam Electric Plant, Units 1 and 2
SUBJECT:
SUMMARY
OF TELEPHONE CONFERENCE HELD ON JANUARY 12, 2005, BETWEEN THE U.S. NUCLEAR REGULATORY COMMISSION AND CAROLINA POWER & LIGHT, COMPANY, CONCERNING DRAFT REQUESTS FOR ADDITIONAL INFORMATION PERTAINING TO THE BRUNSWICK STEAM ELECTRIC PLANT, UNITS 1 AND 2, LICENSE RENEWAL APPLICATION (TAC NOS. MC4641 AND MC4642)
The U.S. Nuclear Regulatory Commission staff (the staff) and representatives of Carolina Power & Light, Company (CP&L) held a telephone conference call on January 12, 2005, to discuss and clarify the staffs draft requests for additional information (D-RAIs) concerning the Brunswick Steam Electric Plant, Units 1 and 2, license renewal application. The conference call was useful in clarifying the intent of the staffs D-RAIs. provides a listing of the meeting participants. 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/
Sikhindra K. Mitra, Project Manager License Renewal Section A License Renewal and Environmental Impacts Program Division of Regulatory Improvement Programs Office of Nuclear Reactor Regulation Docket Nos.: 50-325 and 50-324
Enclosures:
As stated cc w/encls: See next page
ML050910203 DOCUMENT NAME: E:\\Filenet\\ML050910203.wpd OFFICE PM:RLEP LA:RLEP SC:RLEP NAME SMitra MJenkins SLee DATE 04/01/05 03/31/05 04/01/05
cc:
Mr. Steven R. Carr Associate General Counsel - Legal Department Progress Energy Service Company, LLC Post Office Box 1551 Raleigh, North Carolina 27602-1551 Mr. David R. Sandifer, Chairperson Brunswick County Board of Commissioners Post Office Box 249 Bolivia, North Carolina 28422 Resident Inspector U. S. Nuclear Regulatory Commission 8470 River Road Southport, North Carolina 28461 Mr. John H. ONeill, Jr.
Shaw, Pittman, Potts & Trowbridge 2300 N Street NW Washington, DC 20037-1128 Ms. Beverly Hall, Section Chief Radiation Protection Section, Division of Natural Resources N.C. Department of Environment and Natural Resources 3825 Barrett Dr.
Raleigh, North Carolina 27609-7721 Mr. David H. Hinds Plant General Manager Brunswick Steam Electric Plant Carolina Power & Light Company Post Office Box 10429 Southport, North Carolina 28461-0429 Public Service Commission State of South Carolina Post Office Drawer 11649 Columbia, South Carolina 29211 Ms. Margaret A. Force Assistant Attorney General State of North Carolina Post Office Box 629 Raleigh, North Carolina 27602 Mr. Robert P. Gruber Executive Director Public Staff - NCUC 4326 Mail Service Center Raleigh, North Carolina 27699-4326 Mr. T. P. Cleary Director - Site Operations Brunswick Steam Electric Plant Progress Energy Carolinas, Inc.
Post Office Box 10429 Southport, North Carolina 28461-0429 Mr. Norman R. Holden, Mayor City of Southport 201 East Moore Street Southport, North Carolina 28461 Mr. Warren Lee Emergency Management Director New Hanover County Department of Emergency Management Post Office Box 1525 Wilmington, North Carolina 28402-1525 Mr. Chris L. Burton, Manager Performance Evaluation and Regulatory Affairs PEB 7 Progress Energy Post Office Box 1551 Raleigh, North Carolina 27602-1551 Mr. Edward T. ONeill Manager - Support Services Brunswick Steam Electric Plant Carolina Power & Light Company Post Office Box 10429 Southport, North Carolina 28461
Brunswick Steam Electric Plant, Units 1 and 2 cc:
Allen K. Brittain Superintendent, Security Brunswick Steam Electric Plant Progress Energy Carolinas, Inc.
P.O. Box 10429 Southport, North Carolina 28461-0429 Mr. Michael Heath Brunswick Steam Electric Plant P.O. Box 10429 Southport, North Carolina 28461-0429 Talmage B. Clements Manager - License Renewal Progress Energy P. O. Box 1551 Raleigh, North Carolina 27602 Mr. Fred Emerson Nuclear Energy Institute 1776 I Street, NW, Suite 400 Washington, DC 20006-3708 Ms. Ilene Brown NCUW William Randall Library 601 S. College Rd.
Wilmington, North Carolina 28403-5616 Mr. Cornelius J. Gannon, Vice President Brunswick Steam Electric Plant Carolina Power & Light Company Post Office Box 10429 Southport, North Carolina 28461-0429
DISTRIBUTION: Note to Licensee: Carolina Power & Light Company, Re: Telecon Summary held on January 12, 2005, Dated: April 1, 2005 Adams Accession No.: ML050910203 HARD COPY RLEP RF E-MAIL:
RidsNrrDrip RidsNrrDe G. Bagchi K. Manoly W. Bateman J. Calvo R. Jenkins P. Shemanski J. Fair RidsNrrDssa RidsNrrDipm D. Thatcher R. Pettis G. Galletti C. Li K. Winsberg (RidsOgcMailCenter)
R. Weisman M. Mayfield A. Murphy S. Smith (srs3)
S. Duraiswamy Y. L. (Renee) Li RLEP Staff B. Mozafari C. Julian, RII B. Rogers C. Lauron H. Ashar Z. Fu R. Dipert LIST OF PARTICIPANTS FOR TELEPHONE CONFERENCE TO DISCUSS THE BRUNSWICK STEAM ELECTRIC PLANT, UNITS 1 AND 2 LICENSE RENEWAL APPLICATION JANUARY 12, 2005 Participants Affiliation Michael Heath Carolina Power & Light Company (CP&L)
Michael Guthrie CP&L Thomas Overton CP&L S. K. Mitra U.S. Nuclear Regulatory Commission (NRC)
Carolyn Lauron NRC Hansraj Ashar NRC Zhengguang Fu NRC Richard Morante Brookhaven National Lab (BNL)
DRAFT REQUESTS FOR ADDITIONAL INFORMATION (D-RAI)
BRUNSWICK STEAM ELECTRIC PLANT, UNITS 1 AND 2 LICENSE RENEWAL APPLICATION January 12, 2005 The U.S. Nuclear Regulatory Commission staff (the staff) and representatives of Carolina Power & Light, Company (CP&L) held a telephone conference call on January 12, 2005, to discuss and clarify the staffs draft requests for additional information (D-RAIs) concerning the Brunswick Steam Electric Plant, Units 1 and 2, license renewal application (LRA). The following D-RAIs were discussed during the telephone conference call.
D-RAI 4.7.4-1 The torus liner and the ASME,Section XI, ISI component supports are dispositioned through 10 CFR 54.21(c)(1)(ii). In its description of the analyses, the applicant states:
The corrosion rate in the immersion zone was determined to be 0.00116 inch/year based on plant calculations and measurements. The general corrosion rate for the vapor zone is conservatively assumed to be the same as the immersion zone.
... [For ASME,Section XI, ISI Component Supports], (t)he evaluation of considered the number of sides of the component exposed to the torus environment and the time at which the component had been installed.
The staff requests the applicant to list the ASME,Section XI, ISI components, and for each component, the code inspection requirements and a description of the results from the most recent inspections.
The staff requests the applicant to provide details of the plant calculations and measurements to support the use of the 0.00116 inch/year corrosion rate.
The additional information should include, at a minimum, the location and frequency of measurements taken, the evaluation assumptions, the basis/references for these assumptions, acceptance criteria, and how the number of sides of the component exposed to the environment and the in-service time of the component are considered in the evaluation.
If the corrosion rate was based on the assumption of coating integrity, additional information related to the coating inspections performed and the results from these inspections should be included.
The staff requests the technical basis (e.g., industry experience, technical reports) to support the assertion that the corrosion rate for the immersion zone is a conservative assumption for the corrosion rate in the vapor zone. The staff believes that the corrosion rate could be higher in the vapor zone and the highest rate should be in the (water/vapor) transition zone.
Discussion: Based on the discussion with the applicant, the staff indicated and the applicant agreed that this question is revised as follows and will be sent as a formal RAI.
The torus liner and the ASME,Section XI, ISI component supports are dispositioned through 10 CFR 54.21(c)(1)(ii). In its description of the analyses, the applicant states:
The corrosion rate in the immersion zone was determined to be 0.00116 inch/year based on plant calculations and measurements. The general corrosion rate for the vapor zone is conservatively assumed to be the same as the immersion zone.
... [For ASME,Section XI, ISI Component Supports], (t)he evaluation considered the number of sides of the component exposed to the torus environment and the time at which the component had been installed.
The staff requests the applicant to describe the most recent significant inspection findings for the selected ASME,Section XI, ISI components, and the code inspection requirements for these components.
The staff requests the applicant to provide details of the plant calculations and measurements to support the use of the 0.00116 inch/year corrosion rate.
The additional information should include a description of the corrosion monitoring program (discussed during the January 12, 2005, teleconference call) from which the 0.00116 inches/year corrosion rate was determined. In addition, the applicant should indicate the number and frequency of coupons removed and tested.
The staff also requests that the applicant discuss the frequency and results of the wall thickness measurements in the vapor zone to support the assertion that the corrosion rate for the immersion zone is a conservative assumption for the corrosion rate in the vapor zone.
D-RAI 4.7.4-2 The non-ASME,Section XI, ISI component supports are dispositioned through 10 CFR 54.21(c)(1)(iii). In its description of the analyses, the applicant states:
The aging management activities will be predicated on the results of volumetric measurements performed on the components. Therefore, prior to the period of extended operation, the One-Time Inspection Program will be used to perform volumetric measurements to determine the actual rate of corrosion of the Vent Header Lower Column Support in the immersed and vapor space of the Torus, and platform steel and miscellaneous supports in the vapor space of the Torus.
The staff requests the applicant to describe the baseline inspection performed and the results of the inspection for each of the non-ASME,Section XI, ISI components, from which the actual rate of corrosion will be determined.
In addition to the description above, the applicant specifically states that a planned representative ultrasonic examination of the lower column support wall for the vent header will be completed prior to the period of extended operation. However, there are no similar statements of a planned UT for other non-ASME,Section XI, ISI component supports. The applicant later discusses the use of a One-Time Inspection Program to perform volumetric measurements on the lower column support for the vent header and the platform steel and miscellaneous supports in the vapor space of the torus. The staff requests the applicant to discuss how the OTI Program is defined such that all the non-ASME,Section XI, ISI component supports are included within the scope of the OTI program, ultrasonically inspected, and the inspection results analyzed and evaluated for the period of extended operation.
The staff requests the applicant clarify the following:
Does the description and scope for the non-ASME,Section XI, ISI component supports apply to Unit 1 or Unit 2 or both? In what environments are these components - vapor zone or immersed zone or both?
Discussion: Based on the discussion with the applicant, the staff indicated and the applicant agreed that this question is revised as follows and will be sent as a formal RAI.
The non-ASME,Section XI, ISI component supports are dispositioned through 10 CFR 54.21(c)(1)(iii). In its description of the analyses, the applicant states:
The aging management activities will be predicated on the results of volumetric measurements performed on the components. Therefore, prior to the period of extended operation, the One-Time Inspection Program will be used to perform volumetric measurements to determine the actual rate of corrosion of the Vent Header Lower Column Support in the immersed and vapor space of the Torus, and platform steel and miscellaneous supports in the vapor space of the Torus.
The staff requests the applicant to describe the baseline inspection performed and the results of the inspection for each of the non-ASME,Section XI, ISI components, from which the actual rate of corrosion will be determined.
The staff requests the applicant to discuss how the One-Time Inspection (OTI) Program is defined such that all the non-ASME,Section XI, ISI component supports are included within the scope of the OTI program, ultrasonically inspected, and the inspection results analyzed and evaluated for the period of extended operation.
The staff requests the applicant clarify that the description and scope for the non-ASME,Section XI, ISI component supports applies to Unit 1 or Unit 2 or both and to list the components and the environments in which these components are found (i.e., vapor zone or immersed zone or both).