ML20084E249
| ML20084E249 | |
| Person / Time | |
|---|---|
| Site: | McGuire, Mcguire  |
| Issue date: | 04/16/1984 |
| From: | Office of Nuclear Reactor Regulation |
| To: | |
| Shared Package | |
| ML20084E229 | List: |
| References | |
| TAC-53257, TAC-53258, NUDOCS 8405020201 | |
| Download: ML20084E249 (3) | |
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UNITED STATES
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SAFETY EVALUATION BY THE OFFICE OF NUCLEAR REACTOR REGULATION McGUIRE NUCLEAR STATION, UNITS 1 AND 2 DUKE POWER COMPANY INTRODUCTION In a letter dated November 18, 1983, the licensee proposed a change to the Unit 1 and Unit 2 operating licenses which would provide a deviation from the require-ment for 8-hour battery-powered emergency lights for the Standby Shutdown Facility-(SSF) and its access and egress routes through the yard area west of the Turbine Building. This change relates to the requirements of Section III.J., Emergency Lighting, of Appendix R to 10 CFR 50, as described in the respective operating license conditions regarding the Fire Protection Program.
EVALUATION In August 1983 the licensee reported deviation from the requirements of Facility Operating License No. NPF-9 for McGuire Unit I regarding emergency lighting for
-fire protection. The report stated that some areas in the plant do not have 8-hour battery-powered emergency lights where access is needed for operation of safe shutdown equipment. License Condition 2.C.(4) of NPF-9 for McGuire Unit-1 requires lights in those areas (by referencing 10 CFR 50, Appendix R, Section III.J). License Condition 2.C.(7) of NPF-17 for McGuire Unit 2 also requires this prior to March 1, 1984 The aforementioned report also stated that emergency lights will be added by March 1,1984, to comply with the license conditions.
Subsequent review by the licensee has revealed that additional emergency lights should not be required for the Standby Shutdown Facility (SSF) and the access / egress route through the yard to the SSF.
The SSF is a structure completely separate from those other areas of the plant which contain equipment normally used for safe shutdown of the plant. The emer-gency shutdown equipment and controls located in the SSF will be used to maintain the plant in a safe shutdown condition if a fire damages normal plant controls or safe shutdown equipment.
In the event of a fire necessitating use of the SSF, the plant operators would pass through the turbine building and the yard to go from the main control room to the SSF.
The SSF houses an auxiliary diesel generator which provides the emergency power for plant shutdown from the SSF. Lighting for the SSF is provided by an AC lighting system that is transferable to the SSF auxiliary diesel'genecator bus after the generator.is started.
In addition, the SSF contains 90 minute capacity 1
battery-powered emergency lights which actuate upon loss of AC power. The l
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-licensee states that.90 minutes is more than enough time'to manually transfer the AC lighting of the auxiliary diesel generator-bus. Because of this independent, self-contained lighting system, _a fire in other plant areas would not affect the availability of lighting for the SSF.- In addition, a fire in the SSF would not' affect nonnal safe shutdown equipment and, therefore, would not require the use of the SSF.
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! i The lighting for the yard access / egress is powered from sources located in the turbine building and cables do not enter the auxiliary building. A fire in the turbine building would not require use of the SSF for plant shutdown. The licensee further states that the yard lights, including the power source and cables, would not be affected by a fire in any area which would require use of the SSF for plant shutdown. However, the yard lights would not be available in the event of a loss of offsite power. To ensure safe operator access to the SSF through the yard, the licensee, by letter dated February 20, 1984, committed to provide battery-powered hand lanterns in the control room. We find this method is adequate since the hand lanterns would only be used by the operators to traverse the open yard area to get to the control stations in the SSF.
1 ENVIRONMENTAL CONSIDERATION We have detennined that the amendments do not authorize a change in effluent types or total amount nor an increase in power level and will not result in any significant environmental impact. Having made this determination, we have further concluded that the amendments involve an action which is insignificant from the standpoint of environmental impact and, pursuant to 10 CFR 651.5(d)(4), that an environmental impact statement or negative declaration and environmental impact appraisal need not be prepared in connection with the issuance of these amend-ments.
CONCLUSION Since the SSF is provided with self-contained power and lighting systems and the yard lights, power system and cabling are located outside safe shutdown areas, we conclude that the deviation from the battery-powered emergency lighting require-ment of Section III.J of Appendix R to 10 CFR 50 for these areas is justified and that this deviation as reflected in the proposed amended operating license con-ditions is satisfactory and acceptable.
The Commission made a proposed determination that the amendments involve no significant hazards consideration which was published in the Federal. Register (49 FR 7033) on February 24, 1984, and consulted with the state of North Carolina.
No public comments were received, and the state of North Carolina did not have any comments.
,i We have concluded, based on the considerations discussed above, that: (1) there L
is reasonable assurance that the health and safety of the public will not be endangered by operation in the proposed manner, and (2) such activities will be
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conducted in compliance with the Connission's regulations and the issuance of these amendments will not be inimical to the common defense and security or to the health and safety of the public.
L Principal Contributors:
E. Sylvester, Auxiliary Systems Branch,'DSI R. A. Birkel, Licensing Branch No. 4, DL Dated April 16, 1984 i
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April 16, 1984 AMENDMENT NO. 31 TO FACILITY OPERATING LICENSE NPF McGUIRE NUCLEAR STATION, UNIT 1
- AMENDMENT NO.12 TO FACILITY OPERATING LICENSE NPF McGUIRE NUCLEAR STATION, UNIT 2 DISTRIBUTION:
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u Docket Nos. 50-369/370 NRC POR Local PDR NSIC LB #4 r/f E. Adensam R. Birkel M. Duncan Attorney, OELD R. Diggs, ADM T. Barnhart (8)
ACRS (16)
E. L. Jordan, DE0A:I&E J. N. Grace, DRP:I&E L. J. Harmon, I&E File (2)
D. Brinkman
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