ML020770614
| ML020770614 | |
| Person / Time | |
|---|---|
| Site: | Summer  |
| Issue date: | 03/12/2002 |
| From: | Edison G NRC/NRR/DLPM/LPD2 |
| To: | Byrne S South Carolina Electric & Gas Co |
| Edison G E, NRR/DLPM, 415-1448 | |
| References | |
| TAC MB2236 | |
| Download: ML020770614 (9) | |
Text
March 12, 2002 Mr. Stephen A. Byrne Senior Vice President, Nuclear Operations South Carolina Electric & Gas Company Virgil C. Summer Nuclear Station Post Office Box 88 Jenkinsville, South Carolina 29065
SUBJECT:
VIRGIL C. SUMMER NUCLEAR STATION, UNIT NO. 1 - INCLUSION OF TWO UPGRADED INSTRUMENT CARDS INTO RESPONSE TIME TESTING ELIMINATION CATEGORY (TAC NO. MB2236)
Dear Mr. Byrne:
The Nuclear Regulatory Commission has issued the enclosed Amendment No. 158 to Facility Operating License No. NPF-12 for the Virgil C. Summer Nuclear Station, Unit No. 1.
The amendment changes the Technical Specifications (TS) in response to your application dated June 19, 2001.
This amendment approves inclusion of two upgraded 7300 Process Protection System instrument cards (NLP - Loop Power Supply and Isolator card, and NSA - Summing Amplifier card) into the response time testing elimination population. The associated Bases for TS 3/4.3.1 is being revised to reflect this change.
A copy of the related Safety Evaluation is enclosed. Notice of Issuance will be included in the Commission's Bi-weekly Federal Register notice. This completes the staff's efforts on TAC No.
MB2236.
Sincerely,
/RA/
Gordon E. Edison, Sr. Project Manager, Section 1 Project Directorate II Division of Licensing Project Management Office of Nuclear Reactor Regulation Docket No. 50-395
Enclosures:
- 1. Amendment No. 158 to NPF-12
- 2. Safety Evaluation
Mr. Stephen A. Byrne March 12, 2002 Senior Vice President, Nuclear Operations South Carolina Electric & Gas Company Virgil C. Summer Nuclear Station Post Office Box 88 Jenkinsville, South Carolina 29065
SUBJECT:
VIRGIL C. SUMMER NUCLEAR STATION, UNIT NO. 1 - INCLUSION OF TWO UPGRADED INSTRUMENT CARDS INTO RESPONSE TIME TESTING ELIMINATION CATEGORY (TAC NO. MB2236)
Dear Mr. Byrne:
The Nuclear Regulatory Commission has issued the enclosed Amendment No. 158 to Facility Operating License No. NPF-12 for the Virgil C. Summer Nuclear Station, Unit No. 1.
The amendment changes the Technical Specifications (TS) in response to your application dated June 19, 2001.
This amendment approves inclusion of two upgraded 7300 Process Protection System instrument cards (NLP - Loop Power Supply and Isolator card, and NSA - Summing Amplifier card) into the response time testing elimination population. The associated Bases for TS 3/4.3.1 is being revised to reflect this change.
A copy of the related Safety Evaluation is enclosed. Notice of Issuance will be included in the Commission's Bi-weekly Federal Register notice. This completes the staff's efforts on TAC No.
MB2236.
Sincerely,
/RA/
Gordon E. Edison, Sr. Project Manager, Section 1 Project Directorate II Division of Licensing Project Management Office of Nuclear Reactor Regulation Docket No. 50-395
Enclosures:
- 1. Amendment No. 158 to NPF-12
- 2. Safety Evaluation cc w/encls: See next page DISTRIBUTION PUBLIC RLaufer (hard copy) RidsAcrsAcnwMailCenter PDII-1 Rdg EDunnington (hard copy) GHill (2) RidsRgn2MailCenter RidsNrrDlpmLpdii RidsOgcRp WBeckner ML020770614 FILENAME - G:\PDII-1\SUMMER\RAMIN\MB2236-AMD.WPD *See previous concurrence
OFFICE PM:PDII/S1 LA:PDII/S2 SC(A):PDII/S1 OGC NAME GEdison EDunnington RMartin for RLaufer RHoefling DATE 2/25/02 2/19/02 3/12/02 3/5/02 COPY Yes/No Yes/No Yes/No Yes/No OFFICIAL RECORD COPY SOUTH CAROLINA ELECTRIC & GAS COMPANY SOUTH CAROLINA PUBLIC SERVICE AUTHORITY DOCKET NO. 50-395 VIRGIL C. SUMMER NUCLEAR STATION, UNIT NO. 1 AMENDMENT TO FACILITY OPERATING LICENSE Amendment No. 158 License No. NPF-12
- 1. The Nuclear Regulatory Commission (the Commission) has found that:
A. The application for amendment by South Carolina Electric & Gas Company (the licensee), dated June 19, 2001, complies with the standards and requirements of the Atomic Energy Act of 1954, as amended (the Act), and the Commission's rules and regulations set forth in 10 CFR Chapter I; B. The facility will operate in conformity with the application, the provisions of the Act, and the rules and regulations of the Commission; C. There is reasonable assurance (i) that the activities authorized by this amendment can be conducted without endangering the health and safety of the public, and (ii) that such activities will be conducted in compliance with the Commission's regulations; D. The issuance of this amendment will not be inimical to the common defense and security or to the health and safety of the public; and E. The issuance of this amendment is in accordance with 10 CFR Part 51 of the Commission's regulations and all applicable requirements have been satisfied.
- 2. Accordingly, the license is amended by changes to the Technical Specifications, as 0indicated in the attachment to this license amendment; and paragraph 2.C.(2) of Facility Operating License No. NPF-12 is hereby amended to read as follows:
(2) Technical Specifications and Environmental Protection Plan The Technical Specifications contained in Appendix A, as revised through Amendment No. 158 , and the Environmental Protection Plan contained in Appendix B, are hereby incorporated in the license. South Carolina Electric &
Gas Company shall operate the facility in accordance with the Technical Specifications and the Environmental Protection Plan.
- 3. This amendment is effective as of its date of issuance and shall be implemented within 30 days of issuance.
FOR THE NUCLEAR REGULATORY COMMISSION
/RA by Robert Marting for/
Richard J. Laufer, Acting Chief, Section 1 Project Directorate II Division of Licensing Project Management Office of Nuclear Reactor Regulation
Attachment:
Changes to the Technical Specifications Date of Issuance: March 12, 2002
ATTACHMENT TO LICENSE AMENDMENT NO. 158 TO FACILITY OPERATING LICENSE NO. NPF-12 DOCKET NO. 50-395 Replace the following pages of the Appendix A Technical Specifications with the attached revised pages. The revised pages are identified by amendment number and contain marginal lines indicating the areas of change.
Remove Pages Insert Pages B 3/4 3-1a B 3/4 3-1a B 3/4 3-1b B 3/4 3-1b B 3/4 3-1c B 3/4 3-1c
SAFETY EVALUATION BY THE OFFICE OF NUCLEAR REACTOR REGULATION RELATED TO AMENDMENT NO. 158 TO FACILITY OPERATING LICENSE NO. NPF-12 SOUTH CAROLINA ELECTRIC & GAS COMPANY SOUTH CAROLINA PUBLIC SERVICE AUTHORITY VIRGIL C. SUMMER NUCLEAR STATION, UNIT NO. 1 DOCKET NO. 50-395 0
1.0 INTRODUCTION
By letter dated June 19, 2001, South Carolina Electric & Gas Company (licensee) submitted a request for a Technical Specifications (TS) change. The proposed change supports inclusion of two newer and upgraded 7300 Process Protection System (PPS) instrument cards (NLP -
Loop Power Supply and Isolator card, and NSA - Summing Amplifier card) into the response time testing elimination population. In October 1998, the NRC approved Westinghouse Topical Report WCAP-14036-P-A, Revision 1, Elimination of Periodic Response Time Tests, which allowed certain instruments in the protection system identified in the WCAP to be replaced without response time testing. The licensee has submitted its review of two 7300 PPS instrument cards that were part of the original Failure Modes and Effect Analysis (FMEA), but have been redesigned since the approval of the WCAP. The intention of this review is to demonstrate that the differences between the upgraded version and the older version of these cards are insignificant with respect to the conclusions of the FMEA performed for the response time.
2.0 BACKGROUND
In Amendment No. 146, dated August 29, 2000, to Facility Operating License No. NPF-12, V.C. Summer Nuclear Station Unit No. 1, the staff approved the TS Bases B3/4 3-1 wording changes. B3/4 3-1 states that WCAP 14036-P-A, Revision 1, Elimination of Periodic Response Time Tests, provides the basis and methodology for using allocated signal processing and actuating logic response times in the overall verification of the protection system channel response time. The allocations for sensor, signal conditioning, and actuation logic response time must be verified prior to placing the component into operational service and re-verified following maintenance or modification that may adversely affect response time. In general, electrical repair work does not impact response time provided the parts used for the repair are of the same type and value. Specific components identified in the WCAP may be replaced without verification testing. One example where response time could be affected is replacing the sensing element of a transmitter.
3.0 EVALUATION The licensee proposes to install two upgraded 7300 Process Protection System cards - 11NLP and 6NSL cards at V.C. Summer Nuclear Station Unit 1 during the next refueling outage. The older version of these cards were included in the population of circuit cards in the original FMEA performed for WCAP-14036-P-A, Revision 1. The newer cards were upgraded for enhancement of performance after WCAP-14036-P-A was approved. Westinghouse letter CGE-00-018, dated March 28, 2000, provided an evaluation of the Group 5 (11NLP and 6NSA) 7300 process cards. This letter concluded that the failure modes and effects analysis performed for the older versions of these cards and documented in WCAP-14036-P-A, Revision 1, is applicable for the newer Group 05 cards. The bounding time response values determined by test and evaluation and reported in the WCAP are valid for these redesigned cards.
The staff has reviewed the Westinghouse proprietary information and the schematic diagrams for the Loop Power Supply (NLP) card and Summing Amplifier (NSA) card. Basically, the new version of design is to extend the life and enhance the performance of the equipment by taking advantage of the availability of new state-of-the-art components. The new version of design will reduce card power consumption and heat dissipation, enhance temperature stability and reduce draft, improve testing and calibration provisions, and improve the reliability rating or mean time between failure. The circuit signal path is maintained as the original design. Based on its review, the staff agrees with the conclusion stated in Westinghouse letter CGE-00-018.
The staff has reviewed the licensees request and the supporting evaluation of the Group 05 (11NLP and 6NSA) 7300 process cards. The supporting evaluation concluded that the FMEA performed for the older versions of these cards and documented in WCAP-14036-P-A, Revision 1, is applicable for the newer Group 05 cards. The bounding time response values determined by test and evaluation and reported in the WCAP are valid for these upgraded cards. The staff finds the proposed changes acceptable.
4.0 STATE CONSULTATION
In accordance with the Commission's regulations, the State of South Carolina official was notified of the proposed issuance of the amendment. The State official had no comments.
5.0 ENVIRONMENTAL CONSIDERATION
The amendment changes a requirement with respect to installation or use of a facility component located within the restricted area as defined in 10 CFR Part 20. The NRC staff has determined that the amendment involves no significant increase in the amounts, and no significant change in the types, of any effluents that may be released offsite, and that there is no significant increase in individual or cumulative occupational radiation exposure. The Commission has previously issued a proposed finding that the amendment involves no significant hazards consideration, and there has been no public comment on such finding (66 FR 38766). Accordingly, the amendment meets the eligibility criteria for categorical exclusion set forth in 10 CFR 51.22(c)(9). Pursuant to 10 CFR 51.22(b) no environmental impact statement or environmental assessment need be prepared in connection with the
issuance of the amendment.
6.0 CONCLUSION
The Commission has concluded, based on the considerations discussed above, that (1) there is reasonable assurance that the health and safety of the public will not be endangered by operation in the proposed manner, (2) such activities will be conducted in compliance with the Commission's regulations, and (3) the issuance of the amendment will not be inimical to the common defense and security or to the health and safety of the public.
Principal Contributor: H. Li Date: March 12, 2002
Mr. Stephen A. Byrne VIRGIL C. SUMMER NUCLEAR STATION South Carolina Electric & Gas Company cc:
Mr. R. J. White Ms. Kathryn M. Sutton, Esquire Nuclear Coordinator Winston & Strawn Law Firm S.C. Public Service Authority 1400 L Street, NW c/o Virgil C. Summer Nuclear Station Washington, DC 20005-3502 Post Office Box 88, Mail Code 802 Jenkinsville, South Carolina 29065 Resident Inspector/Summer NPS c/o U.S. Nuclear Regulatory Commission 576 Stairway Road Jenkinsville, South Carolina 29065 Chairman, Fairfield County Council Drawer 60 Winnsboro, South Carolina 29180 Mr. Henry Porter, Assistant Director Division of Waste Management Bureau of Land & Waste Management Department of Health & Environmental Control 2600 Bull Street Columbia, South Carolina 29201 Mr. Gregory H. Halnon, General Manager Nuclear Plant Operations South Carolina Electric & Gas Company Virgil C. Summer Nuclear Station, Mail Code 303 Post Office Box 88 Jenkinsville, South Carolina 29065 Mr. Melvin N. Browne, Manager Nuclear Licensing & Operating Experience South Carolina Electric & Gas Company Virgil C. Summer Nuclear Station, Mail Code 830 Post Office Box 88 Jenkinsville, South Carolina 29065