ML18150A116

Proposed Tech Specs,Revising Table 3.21-1 by Increasing from 12 to 14 Number of General Area Smoke Detectors in Auxiliary Bldg

ML18150A116
Person / Time
Site:	Surry
Issue date:	05/29/1987
From:	VIRGINIA POWER (VIRGINIA ELECTRIC & POWER CO.)
To:
Shared Package
ML18150A115	List: ML18150A114 ML18150A116
References
NUDOCS 8706050186
Download: ML18150A116 (4)

Text

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ATTACHMENT 1 Proposed Technical Specification Changes Surry Power Station Units 1 and 2

e TABLE 3.21-1 FIRE DETECTION INSTRUMENTS e TS 3.21-7 INSTRUMENT LOCATION MINIMUM INSTRUMENTS OPERABLE Heat Smoke

1. Containment (Reactor Coolant Pumps Only)*** 1 per RCP

2. Containment Cable Penetration Area 4

3. Containment Recirculation Air System 1

4. Cable Tray Room 3 4

5. Cable Tunnel 2 3

6. Cable Vault Area Lower Area 1 2 Upper Area 1 1

7. Charcoal Filter Banks 1 per bank

8. Emergency Diesel Generator Room 1 per room

9. Fuel Oil Tank Room (river) l** 1

10. Fuel Oil Transfer Pump Houses 1 per house**

11. Control Room 4

12. Emergency Switchgear Room 3

13. Auxiliary Building General Area 14

14. Auxiliary Building Charging Pump Cubicles 1 per cubicle

15. Main Steam Valve House 3

16. Safeguards Area 1

17. Fuel Building 1

18. Fire Pump Building 2

19. Mechanical Equipment Room tl3 1

20. Battery Room IA 1

21. Battery Room 1B 1

22. Battery Room 2A 1

23. Battery Room 2B 1

• • Rate of rise actuation devices for high pressure co 2 system

• • • One heat detector installed per pump. RCP pump bearing and motor temperature will be monitored once per hour if the RCP heat detector is inoperable.

e ATTACHMENT 2 Discussion of Change Surry Power Station Units 1 and 2

e

'Discussion Technical Specification Table 3.21-1, Fire Detection Instruments, is being revised to add 2 smoke detectors to the listing for the Auxiliary Building General Area. The total number shown increases from 12 to 14.

These smoke detectors were added to satisfy the requirements of 10 CFR 50, Appendix "R", to provide fire protection capabilities in the Auxiliary Building 2'-0" elevation in the vicinity of the Charging Pump Component Cooling Water Pumps (l-CC-P-2A, -2B; 2-CC-P-2A, -2B).

These smoke detectors are to be wired into the existing Robertshaw smoke detection panel and will have their own alarm bells. The smoke detectors will constitute their own zone (52).

10 CFR 50.92 No Significant Hazards Consideration Analysis The proposed change does not involve a significant hazards consideration as defined in 10 CFR 50.92. This determination was made using the guidance in Generic Letter 86-03.

The proposed change does not:

1. Involve a significant increase in the probability or consequences of any accident previously evaluated. The change enhances the ability to detect fires in the auxiliary building and limit their consequences.

2. Create the possibility of a new or different kind of accident than previously evaluated. The change does not modify plant design or system operation that could create a different type of accident.

3. Involve a significant reduction in a margin of safety. The addition of two smoke detectors would not result in a reduction of safety.

Safety is increased by providing additional detection capability.