ML20008G141

Proposed Change 96 to App a Tech Specs,Sections 3.13 & 4.13 & Tables 3.13.A.1 & 3.13.F.1 Re Limiting Conditions for Operation of Fire Protection Sys

ML20008G141
Person / Time
Site:	Vermont Yankee
Issue date:	06/30/1981
From:	VERMONT YANKEE NUCLEAR POWER CORP.
To:
Shared Package
ML20008G140	List: ML20008G139 ML20008G141
References
NUDOCS 8107020340
Download: ML20008G141 (8)

Text

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3.13 Limiting Conditions for Operation 4.13 Surveillance Requirements k -)/

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C. Fire Hose Stations C. Fire Hose Stations 00 bd 1. Except as specified in 3.12.C.2 below, all hose 1. Each fire hose station shall be CD stations inside the Reactor Building, Turbine verified to be operable:

• G Building, and those inside the Administration CD Building which provided coverage of the Control a. At least monthly by visual IC Room Building shall be operable whenever inspection of the station to assure f

C) equipment in the areas protected by the fire hose all equipment is available.

4 stations is required to be operable.

b. At least once each 18 months by

2. With one or more of the fire hose stations removing the hose for inspection

' () specified in 3. 3.C.1 above inoperable, route an and replacing degraded coupling additional equivalent capacity fire hose to the gaskets and reracking.

unprotected area (s) from an operable hose station within one hour. c. At least once each year by hydro statically testing each outside hose at 250 lbs.

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d. At least once per 3 years by hydro statically testing inside hose at 150 lbs.

c. At least once per 3 years, partially open hose station valves to verify valve operability and no blockage.

D. High Pressure CO2 System D. High Pressure CO2 System

1. Except as specified in Specification 3.13.D.2, 1. The CO2 system located in the cable the CO2 systems located in the cable vault, vault, switchgear room, and diesel fire switchgear room, and diesel fire pump day tank pump day tank room shall be room shall be operable, whenever equipment in the demonstrated operable.

l area protected by the system is required to be l operable. a. At least once per six months by verifyird each CO2 cylinder does

not contain less than 90% of its initial charge.

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3.13 Limiting Conditions for Operation 4.13 Surveillance Requirements ,

2. From and after the date that the CO2 system in b. At least once per 18 months by the cable vault or the switchgear room is verifying that the system, inoperable, establieh a continuous fire watch including associated ventilation with backup fire suppression equipment. Restore dampers, will actuate automatically the system to operable status within 14 days or to a simulated actuation signal, or submit a report within the next 30 days to the a manually initiated signal.

Commission as specified in 6.7.C.2 outlining the cause of inoperability and the plans for c. At least once per operating cycle a restoring the system to operable status. flow path test shall be performed to verify flow through each nozzle. l

3. From and after the date that the CO2 system in the diesel fire pump day tank room is inoperable, E. Vital Fire Barrier Penetration Fire Seals a fire watch shall be established to inspect the location at least once every hour. Restore the 1. Vital fire barJier penetration fire system to operable status within 14 days or seals shall be verified to be submit a report within the next 30 days to the functional by visual inspection at Commission as specified in 6.7.C.2 outlining the least once per operating cycle and cause of inoperability and the plans for following any repair.

restoring the system to operable status.

E. Vital Fire Barrier Penetration Fire Seals

1. Except as specified in Specification 3.13.E.2 i

below, vital fire barrier penetration seals protecting the Reactor Building, Control Room 4.13.F Sprinkler Systems I Building and Diesel Generator Rooms shall be intact. 1. Each of the sprinkler systems specified L in Table 3.13.F.1 shall be demonstrated

2. From and after the date a vital fire barrier operable.

penetration fire seal is not intact, a continuous i fire watsh shall be established on ct least one a. At least once per 12 months by side of the affected peaetration within 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br />. cycling each testable valve in the flow path through at least one 3.13.F Sprinkler Systems complete cycle of full travel.

1. Except as specified in Specification 3.13.F.2 below, those sprinkler systems listed in Table 3.13.F.1 shall be operable whenever equipment in the area protected by those sprinklers is operable or is required to be operable.

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3.13 Limiting Conditions for Operation 4.13 Surveillance Requirements

2. From and after the date that one of the sprinkler b. At least once per 18 months by; systems specified in Table 3.13.F.1 is inoperable, a fire watch shall be established to 1. Cycling each valve in the flow inspect the location with the inoperable path that is not testable sprinkler system at least once every hour. during plant operation through Restore the sprinkler system to operable status at least one complete cycle of within 14 days or submit a report within the next full travel.

30 days to the Commission as specified in 6.7.C.2 outlining the cause of the malfunction and the 2. A visual inspection of the plans for restoring the system to operable status. sprinkler headers to verify their intergrity, and

3. A visual inspection of each nozzle's spray area to verify that the spray pattern is not obstructed.

c. At least ont , per 3 years by performing a flow test through each open head sprinkler header and verifying each open head sprinkler nozzle is unobstructed.

3.13.G Foam Systems 4.13.G Foam Systems

1. Except as specified in Specification 3.13.G.2 1. The foam system specified in 3.13.G below, the Recirculation M.G. Set Foam System shall be. demonstrated operable.

shall be operable whenever the Recirculation M.G.

Sets are operating. a. At least once per 12 months by cycling each testable valve in the

2. From and after the date that the Recirculation flow path through at least one M.G. Set Foam System is inoperable, a fire watch complete cycle of full travel.

shall be established to inspect the location at least once every hour; and a foam nozzle with a b. At least once per 18 months by:

10 minute supply of foam shall be brought to the Reactor Building elevation containing the l Recirculation M.G. Sets.

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VYNPS 3.13 Liniting Conditiona for operation 4.13 Surveillance Requirements

1. Cycling each valve in the flow '

path that is not. testable during plant operation through at least one complete cycle of full travel.

2. A visual inspection of the foam header to verify intergrity, and i,

3. A visual inspection of each '

foam nozzle area to verify that the spray pattern is not obstructed.

c. At least once per 3 years by performing an air flow test through the foam header and verifying each foam nozzle is unobstructed.

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VYNPS Table 3.13.A.1 Fire Detection Sensors Minimum No. Sensors Required to be Operable Heat Flame Smoke

_ Sensor. Location Cable Spreading Room' & Station Battery Room - -

23 1.

2. Switchgear Room 20 2

Diesel Generator Room (A) 3.

2

4. Diesel Generator. Room (B) 1

5. Intake Structure (Service Water) 1 1

6. Recire Motor Generator Set Area 3 -

8 7.a Control Room Zone 1 (Control Room Ceiling) - -

14 7.b Control Room Zone 2 (Control Room Panels) 18 25 7.c Control Room Zone 3 (Control Room Panels) 7.d Control Room Zone 4 (Control Room Panels) 10 7.e Control Roon zone 5 (Exhaust & Supply Ducts) - -

2 1

8.a Rx Bldg. Corner Rm NW 232 - -

8.b Ex Bldg. Corner Rm NW 213 (RCIC) - -

1

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Rx Bldg. Corner Rm NE 232 - -

1 f 8.e 8.d Rx Bldg. Corner Rm NE 213 - -

1 l

Rx Bldg. Corner Rin SE 232 - -

1 l 8.e 8.f Rx Bldg. Corner Rm SE 213 - -

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8.g Rx Bldg. Corner Rm SW 232 1

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9. HPC1 Roon l

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5 Table 3.13. A.1, cont.

Minimum No. Sensors Required to be Operable ,

Sensor Location Heat Flame Smoke 10.- Torus area 12 -

16

11. - Rx Bldg. Cable Penetration Area - -

7

12. Refuel Floor - -

13

,13. Diesel Oil Day Tank Room (A) -

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14. Diesel Oil Day Tank Room (B) -

1* 1*

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15. Turbine Loading Bay (vehicles) -

3 -

4 l

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• NOTE: The Diesel Day Tank Rooms require only one detector operable (1 l flame cLr,1 smoke) .

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VYNPS Table 3.13.F.1 Sprinkler Systems

1. Reactor Building Penetration Arca Preaction System

2. Diesel Generator Room A System

3. Diesel Generator Room B System

4. Turbine Loading Bay System

5. Diesel-driven Fire Pump System i

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1 1.

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Bares:

3.13/4.13 Fire Protection Systems

On May 11,1976, Vermont Yankee received a letter from the NRC requesting that an in-depth evaluation of the existing fire protection systems be performed using Branch Technical Position (BTP) APCSB 9.5-1 as a guide. Concurrent In an effort to clarify the BTP an eith this evaluation a fire hazards analysis of the entire plant complex was . required.

Appendix A was subsequently issued to specifically address operating plants. Enclosed with this Appendix the NRC

,' requested that proposed Technical Specifications on fire protection also be submitted. The subject section 3.13/4.13 and the following specific bases are those spcifications evolving from these efforts.

A. The smoke, heat and flame detectors provide the early warning fire detection capability necessary to detect problems in vital areas of the plant. Surveillance requirements assure these sensors and their associated instruments to be operable. When the equipmant protected by the detectors in not required to be operable, specifications covering the sensors and instruments do not apply.

B,C,D, The Vital Fire Suppression Water System, CO2 systems, sprinkler systems and foam system specifications are l

. F and G. provided to meet pre established levels of system operability in the event of a fire. These systems provide the necessary protection to assure safe reactor shutdown. Periodic surveillance testing provides assurance that vital fire suppression systems are operable.

E. Vital fire barrier penetration fire seals are provided to assure that the fire resistance rating of barriers is

not reduced by a penetration. Surveillance inspections shall be performed to insure that the integrity of these seals are maintained.

The diesel fire pump has a design consumption rate of 18 gallons of fuel per hour; therefore,150 gallons i

provides for greater thcn 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> of operation. Additional fuel can be delivered in a~oout one hour and additional fuel is on site. When the equipment protected by the fire protection systems is not required to be operable, the specifications governing the fire protection system do not apply.

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