ML20065D510

Proposed Tech Specs,Adding Operability & SRs to Support Unit 3 480-volt Load Shed Logic Sys Being Added by Design Change

ML20065D510
Person / Time
Site:	Browns Ferry
Issue date:	03/29/1994
From:	TENNESSEE VALLEY AUTHORITY
To:
Shared Package
ML20065D496	List: ML20065D493 ML20065D510
References
NUDOCS 9404070110
Download: ML20065D510 (6)

Text

.

l

-l

'l ENCLOSURE 2 TENNESSEE VALLEY AUTHORITY BROWNS FERRY NUCLEAR PLANT (BFN)

UNIT 3 PROPOSED TECHNICAL SPECIFICATION CHANGE TS-340 i

NARKED PAGES l

I.

AFFECTED PAGE LIST l

3.9/4.9-5 l

3.9/4.9-7 l

II.

MARKED PAGES l

l See Attached.

I I

i l

l

?

t 9404070110 940329 i

PDR ADOCK 05000296 l.

P PDR

i i

\\

3.9/4.9 AUXTLIARY EL1. iRfCAL SYSTEM

~~~

NOV 0 41991 LIMITING CONDITIONS FOR OPERATION SURVEILLANCE REQUIREMENTS 3.9.A.

Auxiliary Electrical Eauirment.

4.9.A.

Auxiliary Electrical System.

l 3.

Buses and Boards Available 3.

.Lonic Systems a.

The respective start bus a.

Both divisions of the is energized for each accident signal logic common station-service system shall be transformer designated as tested every 18 months l

an offsite power source.

to demonstrate that it will function on actuation of the core spray system of the

)

l reactor to provide an-automatic start signal to all 4 diesel generators, b.

The 4-kV bus tie board

{

is energized if a

b. Once. over y t e mas, cooling tower transformer is designated as an e, co n b un &

offsite power source.

dc.h Oc 46D-Vo It loab Sheddmb ho lc.

c.

The 4-kV shutdown

'i rep 64/NM boards (3EA,.3EB, 3EC, Sy-Meni 15 j

3ED) are energized, sh3\\l k Sim ule M d.

The 480-V shutdown boards 3A and 3B are energized.

bcd' e.IDah Shedda.

layc S initiate,y sfewi cace sig nels on -Sie-cldocI. l CduNfI4P[ hceedS R.F10\\l Boards, cd/ #d' 4 p0_nl+ shm4 dMn boards.

1 l

Mh BFN 3.9/4.9-5

~

Unit 3

a 3.9/4.9 AUXILIARY ELECTRICAL SYSTEM

((,

2 lggl LIMITING CONDITIONS FOR OPERATION SURVEILLANCE REQUIREMENTS 3.9.A.

Auxiliary Electrical Eculement 4.9.A.

Aurillarv Electrical System 4.9.A.4. (Cont'd) c.

The loss of voltage and degraded voltage relays which start the diesel generators from the 4-kV shutdown boards shall be calibrated annually for trip and reset and the measurements logged.

These relays shall be calibrated as specified in Table 4.9.A.4.c.

j d.

4-kV shutdown board voltages shall be

b. L oq, c h y 3tems recorded once every

~

12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br />.

i 4 g. Accident signal logic

5. 480-V RMOV Boards 3D and 3E system is OPERABLE.

a.

Once per operating cycle, the automatic b.

4 80 -~

• lt load shedd,n transfer feature for 480-V RMOV boards 3D I D $ c. sy st een y@

yo,

/

and 3E shall be functionally tested to verify auto-transfer capability.

6.

There shall be a minimum of 35,280 gallens of diesel fuel in each of the 7-day diesel-generator fuel tank assemblies.

NDW NO.15 3 BFN 3.9/4.9-7 Unit 3

6 s

ENCLOSURE 3

. TENNESSEE VALLEY AUTHORITY BROWNS FERRY NUCLEAR PLANT (BFN)

UNIT 3 PROPOSED TECHNICAL SPECIFICATION CHANGE TS-340 REVISED PAGES I.

AFFECTED PAGE LIST 3.9/4.9-5 3.9/4.9-7 II.

REVISED PAGES See Attached.

'l t

3.9/4.9 AUXILIARY ELECTRICAL SYSTEM 1

LIMITING CONDITIONS FOR OPERATION SURVEILLANCE REOUIREMENTS 3.9.A.

Auxiliary Electrical Eauioment 4.9 A.

Auxiliary Electrical System 3.

Buses and Boards Available 3.

Lonic Systems 1

a.

The respective start bas a.

Both divisions of the is energized for each accident signal logic common station-service system shall be transformer designated as tested every 18-months i

an offsite power source.

to demonstrate that it will function on l

actuation of the core spray system of the.

reactor to provide an automatic start signal to all 4 diesel generators, b.

The 4-kV bus tie board b.

Once.every,18 months, is energized if a the condition.under cooling tewer transformer which the 480-volt load is designated as an shedding logic system offsite power source.

is required shall be simulated to demonstrate that the load shedding logic system would initiate load shedding signals on the diesel auxiliary boards, RMOV i

boards, and the 480-volt shutdown boards.

c.

The 4-kV shutdown boards (3EA, 3EB, 3EC, J

I 3ED) are energized.

d.

The 480-V shutdown boards 3A and 3B are energized.

BFN 3.9/4.9-5 Unit 3

?

3.9/4.9 AUXILIARY ELECTRICAL SYSTEM LIMITING CONDITIONS FOR OPERATION SURVEIT.T.AMCE REOUIREMENTS 3.9.A.

Auriliary Electrical Eauioment 4.9.A.

Auxiliary Electrical System 4.9.A.4. (Cont'd) c.

The loss of voltage and degraded voltage relays which start the diesel generators from the 4-kV l

st.itdown boards ahall be calibrated annually for trip and reset and the measurements logged. These relays shall be calibrated as specified in Table 4.9.A.4.c.

d.

4-kV shutdown board voltages shall be recorded once every 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br />.

l 5.

Lonic Systems 5.

480-V RMOV Boards 3D and 3E l

a.

Accident signal logic system is OPERABLE.

a.

Once per operating cycle, the automatic b.

480-volt load shedding transfer feature

)

logic system is OPERABLE.

for 480-V RMOV boards 3D and 3E shall be functionally l

tested to verify auto-transfer capability.

6.

There shall be a minimum of 35,280 gallons of diesel fuel in each of the 7-day diesel-generator fuel tank assemblies.

I 1

I l

BFN 3.9/4.9-7 l

Unit 3 l

.m..-...-

. -., - -.