ML18150A116: Difference between revisions

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{{#Wiki_filter:' . ATTACHMENT 1 Proposed Technical Specification Changes Surry Power Station Units 1 and 2 e TABLE 3.21-1 e TS 3.21-7 FIRE DETECTION INSTRUMENTS INSTRUMENT LOCATION MINIMUM INSTRUMENTS OPERABLE 1. Containment (Reactor Coolant Pumps Only)*** 2. Containment Cable Penetration Area 3. Containment Recirculation Air System 4. 5. 6. Cable Tray Room Cable Tunnel Cable Vault Area Lower Area Upper Area 7. Charcoal Filter Banks 8. Emergency Diesel Generator Room 9. Fuel Oil Tank Room (river) 10. Fuel Oil Transfer Pump Houses 11. Control Room 12. Emergency Switchgear Room 13. Auxiliary Building General Area 14. Auxiliary Building Charging Pump Cubicles 15. Main Steam Valve House 16. Safeguards Area 17. Fuel Building 18. Fire Pump Building 19. Mechanical Equipment Room tl3 20. Battery Room IA 21. Battery Room 1B 22. Battery Room 2A 23. Battery Room 2B Heat 1 per RCP 3 2 1 1 1 per bank 1 per room l** 1 per house** ** Rate of rise actuation devices for high pressure co 2 system Smoke 1 per 4 1 4 3 2 1 1 4 3 14 cubicle 3 1 1 2 1 1 1 1 1 *** 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.
{{#Wiki_filter:' .
ATTACHMENT 2 Discussion of Change Surry Power Station Units 1 and 2 e 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.
ATTACHMENT 1 Proposed Technical Specification Changes Surry Power Station Units 1 and 2
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.
e           TABLE 3.21-1 FIRE DETECTION INSTRUMENTS e           TS 3.21-7 INSTRUMENT LOCATION                     MINIMUM INSTRUMENTS OPERABLE Heat        Smoke
The change does not modify plant design or system operation that could create a different type of accident.  
: 1. Containment (Reactor Coolant Pumps Only)***       1 per RCP
: 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.}}
: 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.}}

Latest revision as of 01:46, 21 October 2019

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  Dominion icon.png
Issue date: 05/29/1987
From:
VIRGINIA POWER (VIRGINIA ELECTRIC & POWER CO.)
To:
Shared Package
ML18150A115 List:
References
NUDOCS 8706050186
Download: ML18150A116 (4)
v • d • e


Text

' .

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.

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