ML021230651
| ML021230651 | |
| Person / Time | |
|---|---|
| Site: | Dresden  |
| Issue date: | 06/06/2002 |
| From: | Rossbach L NRC/NRR/DLPM/LPD3 |
| To: | Skolds J Exelon Generation Co, Exelon Nuclear |
| References | |
| TAC MB2880 | |
| Download: ML021230651 (9) | |
Text
June 6, 2002 Mr. John L. Skolds, President Exelon Nuclear Exelon Generation Company, LLC 4300 Winfield Road Warrenville, IL 60555
SUBJECT:
DRESDEN NUCLEAR POWER STATION, UNIT 2 - ISSUANCE OF AMENDMENT FOR ALTERNATE BATTERY FLOAT CHARGE (TAC NO.
MB2880)
Dear Mr. Skolds:
The U.S. Nuclear Regulatory Commission (Commission) has issued the enclosed Amendment No. 193 to Facility Operating License No. DPR-19 for the Dresden Nuclear Power Station, Unit 2. The amendment is in response to your application dated September 5, 2001.
The amendment revises the acceptance criterion in Technical Specification Surveillance Requirement 3.8.4.1 D.C. Sources - Operating for the Alternate Battery terminal voltage on float charge.
A copy of the Safety Evaluation is also enclosed. The Notice of Issuance will be included in the Commission's biweekly Federal Register notice.
Sincerely,
/RA/
Lawrence W. Rossbach, Project Manager, Section 2 Project Directorate III Division of Licensing Project Management Office of Nuclear Reactor Regulation Docket No. 50-237
Enclosures:
- 1. Amendment No. 193 to DPR-19
- 2. Safety Evaluation cc w/encls: See next page
June 6, 2002 Mr. John L. Skolds, President Exelon Nuclear Exelon Generation Company, LLC 4300 Winfield Road Warrenville, IL 60555
SUBJECT:
DRESDEN NUCLEAR POWER STATION, UNIT 2 - ISSUANCE OF AMENDMENT FOR ALTERNATE BATTERY FLOAT CHARGE (TAC NO.
MB2880)
Dear Mr. Skolds:
The U.S. Nuclear Regulatory Commission (Commission) has issued the enclosed Amendment No. 193 to Facility Operating License No. DPR-19 for the Dresden Nuclear Power Station, Unit 2. The amendment is in response to your application dated September 5, 2001.
The amendment revises the acceptance criterion in Technical Specification Surveillance Requirement 3.8.4.1 D.C. Sources - Operating for the Alternate Battery terminal voltage on float charge.
A copy of the Safety Evaluation is also enclosed. The Notice of Issuance will be included in the Commission's biweekly Federal Register notice.
Sincerely,
/RA/
Lawrence W. Rossbach, Project Manager, Section 2 Project Directorate III Division of Licensing Project Management Office of Nuclear Reactor Regulation Docket No. 50-237
Enclosures:
- 1. Amendment No. 193 to DPR-19
- 2. Safety Evaluation cc w/encls: See next page DISTRIBUTION:
PUBLIC OGC, O15B18 PD3-2 r/f ACRS, T2E26 AMendiola RDennig LRossbach GHill (4), T5C3 CRosenberg MRing, RIII
- See previous concurrence ADAMS Accession Number: ML021230651
- SE provided by memo dated 02/05/02 OFFICE PM:LPD3-2 LA:LPD3-2 SC:EEIB OGC SC:LPD3-2 NAME LRossbach CRosenberg CHolden*
RWeisman**
AMendiola DATE 06/06/02 06/06/02 02/05/02 05/23/02 06/06/02 OFFICIAL RECORD COPY
Dresden Nuclear Power Units 2 and 3 cc:
Site Vice President - Dresden Nuclear Power Station Exelon Generation Company, LLC 6500 N. Dresden Road Morris, IL 60450-9765 Dresden Nuclear Power Station Plant Manager Exelon Generation Company, LLC 6500 N. Dresden Road Morris, IL 60450-9765 Regulatory Assurance Manager - Dresden Exelon Generation Company, LLC 6500 N. Dresden Road Morris, IL 60450-9765 U.S. Nuclear Regulatory Commission Dresden Resident Inspectors Office 6500 N. Dresden Road Morris, IL 60450-9766 Chairman Grundy County Board Administration Building 1320 Union Street Morris, IL 60450 Regional Administrator U.S. NRC, Region III 801 Warrenville Road Lisle, IL 60532-4351 Illinois Department of Nuclear Safety Office of Nuclear Facility Safety 1035 Outer Park Drive Springfield, IL 62704 Document Control Desk-Licensing Exelon Generation Company, LLC 4300 Winfield Road Warrenville, IL 60555 Senior Vice President, Nuclear Services Exelon Generation Company, LLC 4300 Winfield Road Warrenville, IL 60555 Vice President Mid-West Regional Operating Group Exelon Generation Company, LLC 4300 Winfield Road Warrenville, IL 60555 Senior Vice President Mid-West Regional Operating Group Exelon Generation Company, LLC 4300 Winfield Road Warrenville, IL 60555 Vice President - Licensing and Regulatory Affairs Exelon Generation Company, LLC 4300 Winfield Road Warrenville, IL 60555 Director - Licensing Mid-West Regional Operating Group Exelon Generation Company, LLC 4300 Winfield Road Warrenville, IL 60555 Senior Counsel, Nuclear Mid-West Regional Operating Group Exelon Generation Company, LLC 4300 Winfield Road Warrenville, IL 60555
EXELON GENERATION COMPANY, LLC DOCKET NO. 50-237 DRESDEN NUCLEAR POWER STATION, UNIT 2 AMENDMENT TO FACILITY OPERATING LICENSE Amendment No. 193 License No. DPR-19 1.
The Nuclear Regulatory Commission (the Commission) has found that:
A.
The application for amendment by the Exelon Generation Company, LLC (the licensee) dated September 5, 2001, complies with the standards and requirements of the Atomic Energy Act of 1954, as amended (the Act), and the Commissions 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 Commissions 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 Commissions regulations and all applicable requirements have been satisfied.
2.
Accordingly, the license is amended by changes to the Technical Specifications as indicated in the attachment to this license amendment and paragraph 2.C.(2) of Facility Operating License No. DPR-19 is hereby amended to read as follows:
(2)
Technical Specifications The Technical Specifications contained in Appendix A, as revised through Amendment No. 193, are hereby incorporated in the license. The licensee shall operate the facility in accordance with the Technical Specifications.
3.
This license amendment is effective as of the date of its issuance and shall be implemented within 30 days of the date of issuance.
FOR THE NUCLEAR REGULATORY COMMISSION
/RA/
Anthony J. Mendiola, Chief, Section 2 Project Directorate III Division of Licensing Project Management Office of Nuclear Reactor Regulation
Attachment:
Changes to the Technical Specifications Date of Issuance: June 6, 2002
ATTACHMENT TO LICENSE AMENDMENT NO. 193 FACILITY OPERATING LICENSE NO. DPR-19 DOCKET NO. 50-237 Replace the following page of the Appendix A Technical Specifications with the attached page. The revised page is identified by amendment number and contains a line in the margin indicating the area of change.
Remove Page Insert Page 3.8.4-5 3.8.4-5
SAFETY EVALUATION BY THE OFFICE OF NUCLEAR REACTOR REGULATION RELATED TO AMENDMENT NO. 193 TO FACILITY OPERATING LICENSE NO. DPR-19 EXELON GENERATION COMPANY, LLC DRESDEN NUCLEAR POWER STATION, UNIT 2 DOCKET NO. 50-237
1.0 INTRODUCTION
By application dated September 5, 2001, Exelon Generation Company, LLC (the licensee) requested a change to the Technical Specifications (TSs) of Facility Operating License No. DPR-19 for Dresden Nuclear Power Station, Unit 2 (Dresden 2). The proposed change would revise the acceptance criterion in TS Surveillance Requirement (SR) 3.8.4.1 D.C.
Sources-Operating, for the Alternate Battery terminal voltage on float charge. Additionally, SR 3.8.5.1 which is required during shutdown conditions, references performance of SR 3.8.4.1. While SR 3.8.5.1 is not being changed, its acceptance criterion would be changed indirectly with the requested change to SR 3.8.4.1.
2.0 BACKGROUND
On October 7, 1999, the licensee completed a plant modification to Dresden 2 that added three battery cells to the Alternate Battery. However, the TS Surveillance Requirement 3.8.4.1c was not revised as part of the modification. The present SR states the following:
Verify battery terminal voltage on float charge is greater than or equal to 130.2 VDC for Unit 2 alternate battery.
The licensee proposes to change the voltage in SR 3.8.4.1c to read Greater than or equal to 134.5 VDC.
3.0 REGULATORY AND TECHNICAL EVALUATION During normal operation, the DC loads are powered from the battery chargers. Upon the failure of the battery charger, the battery is to supply power to the DC distribution system. The 125 Vdc electrical power system provides normal and emergency DC electrical power for the diesel generators, emergency and control switching during all modes of operation.
At Dresden 2, an Alternate Battery allows battery testing and cell replacement for the normal station battery. Verifying terminal voltage while the battery is on float charge ensures the effectiveness of the charging system and the ability of the battery to perform its intended function. Due to the addition of three cells to this Alternate Battery, the acceptable float voltage range should have been revised. The present acceptance criterion in the TS is non-conservative. The increase of the float voltage from 130.2 Vdc to 134.5 Vdc reflects the increase of the number of cells from sixty to sixty-three cells and is more conservative. The operation of safety-related equipment and components remains unchanged and the equipment remains operable, therefore the voltage increase is acceptable.
Based on the above, the staff concludes that the licensees request for amendment to the Technical Specifications associated with the voltage of the Alternate Battery is acceptable as it does not affect the current licensing requirements and the DC systems will be able to perform their safety functions. The change maintains the necessary level of system reliability and the increase in terminal voltage specifically supports the increase in the number of cells of the battery. Therefore, the staff approves the licensees request for amendment of the TSs.
4.0 STATE CONSULTATION
In accordance with the Commission's regulations, the Illinois State official was notified of the proposed issuance of the amendment. The State official had no comments.
5.0 ENVIRONMENTAL CONSIDERATION
The amendment changes a surveillance requirement. 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 (67 FR 10013). 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: S. N. Saba Date: June 6, 2002