ML20209F306
| ML20209F306 | |
| Person / Time | |
|---|---|
| Site: | Brunswick  |
| Issue date: | 07/08/1985 |
| From: | Cutter A CAROLINA POWER & LIGHT CO. |
| To: | Vassallo D Office of Nuclear Reactor Regulation |
| Shared Package | |
| ML20209F311 | List: |
| References | |
| NLS-85-044, NLS-85-44, NUDOCS 8507120443 | |
| Download: ML20209F306 (2) | |
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CD&L Carolina Power & Light Company JtJL 0 81985 SERIAL: NLS-85-044 Director of Nuclear Reactor kegulation Attention: Mr. D. B. Vassallo, Chief Operating Reactors Branch No. 2 Division of Licensing United States Nuclear Regulatory Commission Washington, DC 20555 BRUNSWICK STEAM ELECTRIC PLANT, UNIT NOS.1 AND 2 DOCKET NOS. 50-325 & 50-324/ LICENSE NOS. DPR-71 & DPR-62 REQUEST FOR LICENSE AMENDMENT RADIOACTIVE LIQUID EFFLUENT MONITORING
Dear Mr. Vassallo:
SUMMARY
In accordance with the Code of Federal Regulations, Title 10, Parts 30.90 and 2.101, Carolina Power & Light Company (CP&L) hereby requests a revision to the Technical Specifications (TS) for the Brunswick Steam Electric Plant Unit Nos. I and 2.
The proposed change deletes the Service Water Effluent From Augmented Off-Gas Precooler Radioactivity Monitor from Tables 3.3.5.8-1 and 4.3.5.8-1. The monitors are no longer necessary as these precoolers have been bypassed.
DISCUSSION In the absence of the final off-gas design, the augmented off-gas (AOG) system was conservatively designed assuming an inlet temperature of 165*F. The cooler condensers are designed to process gas with an inlet temperature up to 110*F at the maximum flow rate of 150 SCFM. These parameters indicated a need for precoolers in the AOG system to reduce the temperature of the off-gas using service water as a cooling medium. Final evaluations of the system, however, has indicated that off-gas inlet temperatures to the AOG system will normally be approximately 100*F at 150 SCFM during the summer; temperatures will be less at lower flow rates or during the winter. Therefore, based on the final AOG and off-gas design parameters and the actual operating experience, CP&L concluded that the precoolers were not necessary and decided to isolate them from the AOG system. The service water supply and return lines that are associated with the precoolers were cut and blind flanged inside the AOG Building. Since the service water was eliminated from the AOG process, the requirements of the AOG precooling radioactivity monitors have been eliminated.
SIGNIFICANT HAZARDS ANALYSIS The Commission has provided standards for determining whether a significant hazards consideration exists (10CFR50.92(c)). A proposed amendment to an operating license for a facility involves no significant hazards consideration if operation of the facility in accordance with the proposed amendment would not:(1) involve a significant increase in the probability or consequences of an accident previously evaluated; (2) create the possibility of a new or different kind of accident from any accident previously evaluated; or (3) involve a significant reduction in a margin of safety. Carolina Power & Light Company has determined that the requested amendment per 10CFR50.92:
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Does not involve a significant increase in the probability or consequences of an accident previously evaluated because removal of the AOG precooler radioactivity monitor from the plant does not change any operating parameters or setpoints for either the AOG or service water systems. The radioactivity monitors are only required when the precoolers are in service; with the precooler permanently isolated from both the AOG and service water systems, the radioactivity monitors are no longer required.
(2)
Does not create the possibility of a new or different kind of accident than previously evaluated because the radioactivity monitors do not provide control function for any plant system; therefore, the removal of the monitors could not create the potential for a different type of accident than previously identified or evaluated.
(3)
Does not involve a significant reduction in a margin of safety. The purpose of the radioactivity monitors was to monitor for radioactive effluents being discharged into the service water system from the AOG system. Thus, the potential for contaminating the service water system from the AOG system has been eliminated with the isolation of the precoolers. Also, the radioactivity monitors are not required for any safety function for either the AOG or the service water systems; therefore, the margin of safety is maintained.
Based on the above, CP&L has determined that the proposed change (s) meet the criteria of 10CFR50.92(c) and, therefore, does not involve significant hazards consideration.
ADMINISTRATIVE INFORMATION The proposed Brunswick-1 and Brunswick-2 TS pages are provided in Enclosures 1 and 2.
Carolina Power & Light Company has evaluated this request in accordance with the provisions of 10 CFR 170.12 and has determined that a license amendment application fee is required. A check for $150.00 is enclosed in payment of this fee.
Should you have any questions concerning this submittal, please contact Mr. Sherwood R.
Zimmerman at (919) 836-6242.
Your very uly, Y
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A. B. Cutter - Vic President GB/ccc (Ill5NLU)
Enclosure cc:
Dr. J. Nelson Grace (NRC-RII)
Mr. M. Grotenhuis (NRC)
Mr. W. H. Ruland (NRC-BNP)
A. B. Cutter, having been first duly sworn, did depose and say that the information contained herein is true and correct to the best of his information, knowledge and belief; and the sources of his information are officers, employees, contractors, and a i af,,,,
Carolina Power & Light Company.
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