ML20065N526
| ML20065N526 | |
| Person / Time | |
|---|---|
| Site: | McGuire, Mcguire  |
| Issue date: | 12/04/1990 |
| From: | Tuckman M DUKE POWER CO. |
| To: | NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| References | |
| NUDOCS 9012120182 | |
| Download: ML20065N526 (5) | |
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DilKE POWER December 4, 1990 U.S. Nuclear Regulatory Commission Document Control Desk Washington, D.C. 20555
Subject:
McGuire Nuclear Station, Units 1 and 2 Docket Nos. 50-369 and 50-370 Revision to the McGuire Fire Protection Review Manual Gent.lemen:
Please find attached the subject. manual revision that reflects changes result.ing f rom self-initiated technical audit SITA 89-02 (MC) as addressed in t.he letter to NRC from li.B. Tucker dated April 30, 1990. Only pages from your existing manual that have been revised should be removed.
Actual revisions are indicated by change bars in the right margin. This revision is for your information only.
Should you havr any questions regarding t.his matter, please contact L.J.
Rudy at (704) 373-3413.
Very truly yours, Q
cs M.S. Tuckman IJR/s At.tachment xc (w/ attach):
Mr. S.D. Ebneter Administrator, Region II U.S. Nuclear Regulatory Commission 101 Mariettu St., NW. Suite 2900 Atlant a, GA 30323' Mr. T. A. Reu d. Project Manage.-
Office of Nuclear Reactor Regulalian U.S. Nuclear Regu1M ory Commission One White Flint North, Mail Stop 91f3 Washington, D.C. 20555
'. j Mr. P.K. VanDoorn g
NRC Senior Resident inspector N'N McGuire Nuclear Station 9012120102 901204 fjDR ADOCK 0EW00369
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McGUIRE NUCLEAR STATION FIRE PROTECTION REVIEW O
Revision Log:
1.
January 1979 2.
September 1982 3.
September 1985 4.
March 1986 Q
5.
February 1989 6.
October 1990
O ELEVATION 767 + 0 CONTROL AREA The Control Area Ventilation and Air Conditioning Systems are designed to maintain the environment in the Control, Cable and Equipment Rooms within acceptable limits for the operation of the units.
Because of the uninterrupted safe occupancy during post-accident shutdown criteria, this system is designed as Engineered Safety Feature System with absolute and carbon filtration in the outside air intakes and equip-ment redundancies for use as conditions require, Where Control Area Ventilation System ducts penetrate fire barriers, supports are located within five feet of each penetration on each side of the barrier.
In areas where fire loading analysis indicates a need, the supports are fireproofed to a rating equivalent to the damper located in the penetrations.
Two 100 percent Safety Class 3 redundant air handling systems are provided for the Control Room.
Essential electrical apparatus involved with the cooling, heating and pressurizing of the Control Room during accident conditions is connected to emergency standby power.
A 1000 CFM purge fan serves the Control Room to purge smoke to the Auxiliary Building exhaust system for discharge through the station vent.
O 41 Rev 6 l
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- Smoke from other areas ~on the_767' + 0 Elevation will be handled 'ty the Auxiliary Building exhaust system assisted by portable fans.
1 ELEVATION 750 +-0 The Cable Rooms for Unit 1 and Unit 2 are served by the Control Area-Ventilation and Air Co'nditioning System as described on page 41.
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The Equipment; and Cable Room. make-up fans. supply 1000 CFM each.
The circulation fans supply 55,000 0FM each.
2 The remainder of Elevation. 750 + 0 is served by the Auxiliary Building ventilation-l system. ' Portable fans will be used to - remove smoke ' from-j 4
affected areas to the exhaust system as required.
ELEVATION 733 + 0 1
' The. Equipment /8attery Rooms are served x by the Control Area: Ventilation
..1 Sy s tem. -
-)
TheiBattery: Room / exhaust fans:are provided with1a dif ferential _ pressure
- l. -
switch Llocated -in the fan discharge.
Upon losscof ventilation ' supply or exhaust' air for the Battery _ Rooms; '.'0FF" status nindicator lights on the '
i
. 9VAC Main Control" Board. located in: the Control Room. are energizedi
-Operator action: would ' include switching to the. redur. dant' ventilation system served from the redundant power train.
1 Refer'also to Elevation 750 + 0 for make-up' and ventilation fan 4
m
. capacities.
O 42 Carryover Rev 6 0
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s Paragraph 3520 -
Smoke detection equipment will be installed in accordance with the intent of NFPA 72E,1974 as recommended by persons trained in fire protection
~
system engineering.
(b) FIRE DETECTION SYSTEM SHOULO GIVE AUDIBLE AND VISUAL ALARM AND ANNUNCIATION IN THE CONTROL ROOM.
LOCAL AU01BLE ALARMS SHOULO ALSO SOUND AT.
THE LOCATION OF THE FIRE.
Activation of any detector gives a local alarm on the elevation of the act1*ation as well as an audible and visual alarm in the Control Room.
(c) FIRE ALARMS SHOULO BE DISTINCTIVE AND UNIQUE.
THEY SHOULO NOT BE CAPABLE OF BEING CONFUSED WITH ANY OTHER PLANT SYSTEM ALARMS.
In addition to the local alarm, the PA system is used to alert fire g
brigade personnel and possibility of confusion of the fire alarm with other plant systam alarms is negligible.
(d) FIRE DETECTION AND ACTUATION SYSTEMS SHOULO BE CONNECTED TO THE PLANT EMERGENCY POWER SUPPLY.
The central supervising station is powered from the battery-backed Auxiliary Control Power System.
Each data gathering panel of the detection system is equipped with back-up batteries and each sub-zone panel alarms to the central supervising station on loss of power.
2.
FIRE PROTECTION WATER SUPPLY SYSTEMS (a) AN UNDERGROUND YARD FIRE MAIN LOOP SHOULO BE l
INSTALLED TO FURNISH ANTICIPATED FIRE WATER REQUIREMENTS.
NFPA 24 - STANDARD FOR OUTSIDE PROTECTION - GIVES NECESSARY GUIDANCE FOR SUCH INSTALLATION.
IT REFERENCES OTHER DESIGN CODES O
REV 6 l
61 t
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