ML20148C165

Proposed Pages 292,293,295-99,324,325 & 327 to Tech Specs Re Auxiliary Electrical Sys

ML20148C165
Person / Time
Site:	Browns Ferry
Issue date:	01/24/1980
From:	TENNESSEE VALLEY AUTHORITY
To:
Shared Package
ML20148C160	List: ML20148C156 ML20148C165
References
TVA-BFNP-TS-136, NUDOCS 8001280300
Download: ML20148C165 (12)

Text

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1 ENCLOSURE BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 (DOCKET NOS. 50-259, -260, -296)

PROPOSED CilANGES TO TECilNICAL SPECIFICATIONS (TVA BFNP TS 136) l 3D6 R001280 pn 1

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\\x ifMITINO CONDITIONS FOR OPEP.ATION LURVEILL/SCE REgUIRCMr.NTS m

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3.9 AUX 1LIARY ELECTRICAL SYSTEM 4.9 AUX 1LIARY LlJ.CTRICAL SYSTEM 1

O

. Applicability Applicability D

Applies to the aux 111e ry elac-Applies to the periodic testing i

trical power system, requirenents of the auxiliary alectrical systesis.

i Objective Objrctive To assure an adequate supply of Verify the operability of the electrical powet fot operation of auxiliary electrical systern.

i those systems required for safety, l

Specification Specification A.

Auxiliary Electrical Equip *ent A.

Aux il i a r,v Electrical Equipment A reactor shill not be started 1.

Dicael Generators up (rnade c rit ical) from the a.

Each diesel p.cocrator cold condition unless four shall be renually started units 1 and 7 diesel generators and loaded once each month i

are operable, both 161-kV trans-to demonstrate operational mission lines, two common sta-readiness. The test shall tion servite transformers and continue for at least a one cooling tower tranriermer one-hour period at 75% of A are operable. and the require.

rated load or greater.

rients of 3.9.A.4 through 3.9.A.7 are met.

Du r ini; the monthly g,ene-rator test the diesel A reactor shall not be sta.rted nMa ea nr. a r up (cade criticalI from the I#'

• Hot 5tandt'y Condition unless chec.ked f,or operatton and all of the follovir.g condi-tn ability to recharge I

tions are f.atisfied; air receivers. The opera-t kn of Oc msel Nel 1.

At lent one off-cite 161-kV il transfer pumps shall trnntiminston line c.nd its he demonstrated, and the cee.mn trans former are diesel s t a rt ing t ir'e to availalle und capable of reach rated voltar.e and.

c.ut oe.nt ically supplying speed shall be logged.

suxiliary power to the shutdown boards.

b.

On c r*

per oper.i ting cycl.

a test will be ennducted 2.

Three units 1 and 2 rita ral l

to demonstrate t he crac t-gene rater s s hall l'a operable.j I

get.cy dies.el generators 111 start and accept 3

An add a t tonal ;curce or power consisting of one of emergency load within the follosing-e.

A s er.ond 161-KV tre.ns-mission line e.nd its g

A i-Amendment No.

.9

Revised ll-16-78 l

l 1 rMt'r!NC CO'tutTlotf 5 FOR OP P AT ION 5t

• V I. ! Lt.uC E U DV l

• F f 'IT S 3.9.A Aus t 11 e ry !!ectrical Equipsent 4.9.A Aus111ery Fleg,trical Fquipment_

O tbe epecified tinu esquence.

comon t ransf or tner and c'

Ou

• • "'h th' 9"'*'IST U

cooling tour trant.1ormer of diesel fuel.available capable of suppiving. power II

t o tlw shut down k>oa rds.

J.

tech diesel generator shall Le ginn an annual in.pu-b.

A fourth crerable untts

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'd""C' "I'h I and T die e! xenerator.

instructions based on the manu acturn'a ec m ndo-L.

buses ar.d Boardr, available tions.

bu.es 1A and 18 are e.

Once a p3 nth a campte of a.

Start a

energized.

diesel fuel shall be checked for taality, The quality b.

T r,c units 1 ani 0 4-kV shall be within the orcepta-t hu t tiovn bo a r d ", a r e ble limit s specilled in

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Table i of tlie latest revision to ASTM D975 and longed.

g,g, assoranted wnth tne unit 2.

D.C. Power f.ystro - Linit httertes are energt:ed, (250-Volt) Diesel Generator Betteries (IM volt ond shutdown Board tatteries (250-vol:)

d.

Undervoltnre relays eternble on start g

bu*es lA and IB and L-kV e.

Every week the specifte shutdovn boards, A, P,C, gravity and the voltage af i

I the ptlet call, and trrspcta-and p, turs of an adjacent cell and

• '

• I I N ' ' " Y ' I '

• E ' "' I I 5.

The 250-vn:t uett and.Sutdovn I

• v board batteries and a battery charger for eacn t.attery and b.

tvetY three c.cnths the sw a -

seacciated battery boarde are surerengg.tell $c made of operable.

,,tg g, of cich celi to neatest 0.1 volt, specift(

f.,

t.o t n'

Syntes' gravity of each c e l l, an d i

temperature of every filth e.

Cmm.o n accident s l u. e l c,gg, yh,,,

measuremente logic eyeteu la operable, shall be 1 caged.

b.

420 V load shedding logic A batter / rated discharge c,

erstem to operable, (capacity) test shall bo F*r D d 'Di W M* SJ P s 7

There shall be a mintcm e rif

( b ei, 2nd cutout current 10),300 gallons of dies,t go,g tu asu. e-es.ts sha } l be logfed in the standby diesel genera.

at intarvals not to exceed ter fuel tar.ka.

2k nontr.s.

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, E *~cl h' * / 5' ' ? W j

w L 114171NC CCNDITIONS FOR CPIRATION S's AVII L LAN C E af 0'J I R O'J.NT S

),9.8

,Cverstien with Inoperable 4.9.3 Operation with Ireesrahic n

Equiracnt Equipaont Vhanever-e reactor is to Startup U

mode or kun rode and not in a cold D +,,

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condition. the s'iallsbility of l

electric pvver shall be ao speci-I j

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fled in 3.9.A. sacept as specified kcrain.

1.

From and after the date that 1.

When one 161-kV line or one corxnom one 161-kV line er one conmon station transformer and its parallel station transformer and its cooling tower t ransf ormer and 4 kV parallel cooling tower bus tie board or one start bus is t ransf orner and 4 kV bus found to be inoperable, all units Lie board or ont start 1us 1 and 2 diesel generators and becomer, inoperable, reactor associated boardr, must be demon-operation i s, pe rm i ss i b l e strated to be operable immediately under this condition for and daily thereafter.

seven day +.

2.

When one of the units 1 and 2 2.

h o one of the units 1 ced 2 diesel generator is inoperable, diesel generator is found to be continued reacter operation is 1coperable. s11 of the CS, R)iR pe rzis sible during the succeedinp.

(LPCI and Containcent Cco ling )

7 days, provided that both off.

Systess and the remaining diesel s i te 161-kV t ranscis sion linas 2ecerators and carocia,ted boards and to c h c o::taon s t a t ion t r an s.

shell be de:onstrated to be operable for:ers or one ce= en t rans fe r= e r izr,cdiately and daily tharaafter.

sad one cooling tewer transfomer (not parallel with the enerfixed ce=z>on t r a n s f o rme r ) are avail-able, and all of the CS, RHR (1.P CI and Containcent Cooling) Systans, and the recaining three units 1 and 2 diesel generators are ope rable.

If this requirement canaot be re t, an ordarly shut-dovn shall be initiated and both reacters shall be shutdevn and in the cold condition within 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />.

295

..endmen t fiu.

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L4 Pil18 @ f#XtJ,8 0!), [0] Ot18LAT !n,*l 5tht v t t i. LAM' r. R Er)tt ! WET s

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),9 8 Oj e r.s t 1,o,n w i t_b inoperable 6.9.8 Cperetion with In gerable f.e u t pe e n t Equipwent 3

Vhen one ur.its 1 ar.b 2 L-)V y

shutdovn bosrd is inoperable, continued reactor operation la permissible for a period not to exceed 5 days, provided

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• y'~9' that both off-site 161-iV

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transmissicu lines acd beth comon s ta. tion tru.s forcers or ene cor_ con transfor::er and ene coeling tower transformer and 4-kV bus tie board 3.

When one 4-kV shutdovn board is are available acd the rer.aln-found to be inoperable, all ics k-dV shutdovn bor.rds and fer.alning 4-kV shutdevn boards e.s sx iated die s el.Itnert. tors,

and associated diesel genera-CC, M.n (LPCI knd Contai nent tors, CS and R G (1.PCI snd Ccoling ) Systees, ar.d s1.1 LCO V Con t a irvs e n t Ceolin2) Systems emergency gover boerds are supplies by the ren41ning 4-kV

erable. If this requirerent shutdown boards shall be de

:en-cann:t te net, ar. orderly shut-strated to be operable, i nP. e -

dovn st.11 be initiated eM distely and daily thereafter, both reactors she.11 he shutdovn snd in the cold condition vithin

'A

hours, i

1., Fren and after the dito thst one of the three 250.blt mit b4t.

ter1*s and/or its associated A

battery board is found to be inopora cle for any reason, Q

continued rea ctor cosro tie:s is pertissibic during the succeeding seven days.

Except for routine curveillante testing the VRC shall Se notified within 2I. hours of the eitnetten, the preceutions te be tal.en during this period and the plans to return the failed ca.tponent to an operable

state, t

5.

From and after the date that one of the fear 250-volt shutdown 296 Amendnent tio. 37 t

/-

L1 H I T I NG t e".91 T I O* 's F O R Oi'f a t rinN SURVL ! t.L ANC E 9 F.T.:1 R I. M E N T S O aratinn with Inoperabic 4.9.B 0;cration with Inoperable 3.9.D f_

[

Eqo s pme,n t Eqtil pne n t board batterics'and/or ita associated bettery board la

'found to be inoperable for*

any reason, continued reac-tot operation is perm!*.91ble durinr the succeed 1n: five days in accordince with 3.9.D,4

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When one divistoa of the 1.ngle System in inoperabic. cnntinur<t re e tcr c;rrat ian is permissible under thf* tendition for 9even i

dayo, provided the CGCS c c <,u i t c-mentc its;cd in 9pecific.ition 3.7.H.2 arc sati-fied.

Thc NRC shal: be notified within 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> l

of the n!tuation,'the precautions to be taken Juring this p:riod and the plans to return the failed f

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componcat to an operable state.

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CONDITIC't.", MR OPERATION StfRVEIL!.ANCE hEOUT RTMENTS 1.9.C operacion in cold shutdown i

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Vhenever both reactor $ are in Cold shutdown cor.dition with trradiated fuel in either reactor, the avail-ability of electric power shall ba O

hO

() g as specified in section 3.9.A U

(J c

except as specified herein.

1, At least two units 1 and 2 diesel generators and their 4

associated 4-kV shutdown boards shall be operable.

2.

An additional source of power consisting of at least one of the following:

a. One 161-kV transmissi..n line and its a'mociated con non station transformer either cooling tower transformer and a 4 kV hun tie hoard capable of supplying, power i

to the Units 1 and 2 shut-down boards.

b. A thir d operable die'sel generator i

y 3.

At least one 480-V shutdown n

board for each unit must be operable.

298 Amendment No.

37

/-

I

I h /saW (-27 78 3.,

u_qs The objective of this specification to to assure an adequate source of q

elect ric al power to operate f acilities to cool the plant during shut-

'dovn\\and to operate P.he engineered safeguards following an accident.

Ther: are three mources of alternating current electrical energy avat lable, namely, the 161-kV transmission system, the nuclear geners-

%/

ting. units, and the diesel generators.

The 161-kV offsite power supply consints of two lines which are fed from

.lifferent acetiona of the TVA 161-kV grid.

In the normal mode of opers.

tion, the 161-bV aystem is operating and four diesel generatorn are opers-tionpl.

If one diegel generator is out of service, there normally remain the 161-kV oources, :he nuclear generatinr, units, and the other three diesel r,enerators.

For a diesel generotor to be considered operable its associated 125 V battery must bc operable.

The minimum fuel oil requirement of 10),300 gallons to sufficient for 7 d a y,. o f f ull lond operat ton of 3 diesels and is conservatively based on evollability of a replenishment supply.

Auxiliary power for fir own s ferry Nuclear Plant is supplied from two sources; cither the unit t,tation transformers or from the 161-kV transmission systesi through the comron station transintmetr. or the cooling tower t r.tn s f o r me r s,

i f a corrynon sta t ion tran formci is lost, the units can continue to operate since the unit station trans-formers are in s e rv i c e, t he ot her coman stat ion transformer and the cooling tower t ranc f orine r s are available, and four diesel generators are operat ional.

t D

hhk-A 4.kV nhuttovn heard is.311 owed to be out of operation for a brief period to allow for maintenance and testing, providing all remaintne. 4-kV shutdown hontd, and au*ociated diesel generators CS, RhR, (LPCI and Containment Coo l i nr. ) Systema supplied by the remaining 4-kV s hu t t.ovn boa rd s, and all emergency 400 V power boards are operable.

There are eithe 250-vnlr d-c battery 9y9tems each of which consiot s of a hntteiv, battery charger, and d19tribution equipment. Three of these sys-teme provide power for unit control functions, operative power for unit

,,ator I nl v, and al ternit ive drive pever for a ll5-volt a-c unit preferred matar-cencritor act.

One.' 5 0 - vo l t d-c nyttem provides power f or comon plant and tranmission ayatem control functiens, drive power for a ll5-volt n-r plmt rreferred motor-cencrator set, and emergency drive power for certain unit large motor londe.

The four remaining systems deliver con-trol power to the 4160-volt shutdovn boards.

Amendment No. 39 gg s..

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.t EURVEILLANCE REQUIREMENTS Y

r LIMITING CONDITIONS FOR OPERATION D

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3.9 AUXI LI AR Y ELECTRICAL SYSTEM 3.

'4 hen one unit 3 4 - kV 3.

When one unit 3 4-kV shutdown board is shutdown board'is

• inoperable, continued found to be reactor operation is inoperable, all perrnissible for a remaining unit 3 4-kV i

period not to exceed shutdown boards and 5 days, provided that associated diesel both of f uite 161-kV generators, CS and transmission lines RHR (LPCI and j

and both cooling tower Containment Cooling) transformers are Systems supplied by available and the the remaining 4-kV shutdown boards shall remaining unit 3 4-kV shutdown boards and be demonstrated to be j

associated diesel operable, immediately generators, CS, RHR and daily thereafter.

(LPCI and Containment Cooling) Systems, and l

all unit 3 480-V emergency power boatds are operable.

If this requirement l

cannot be met, an I

orderly shutdown shall be jnitiated and the reactor shall be shutdown and in the cold condition within 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />.

1 I

D Amendment No. 13 324

Revised 11-30-79 LIMITING CONDITIONS FOR OPERATIOtl SURVEILLANCE REQUIREMENTS 3.9 AUX 1LIARY ELECTP.ICAL SYSTEM 4.9 AUXILIARY ELECTRICAL SYSTEM j4 From and after the date that the 250-Volt Simtalown board batteries or one of the three 250-Volt tmit batteries and/or its associated battery board is found to be inoperable for any reason, continued reactor operation is permissible during the succeeding seven days.

Except for routine surveillance testing, the NRC shall be notified j

within 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> of the situation, the precautions to bc taken during this pas period and the plans to return the failed component to an operable state.

5.

When one division of the Logic System is inoperable, continued reactor operation is permissible under this condition for seven days, provided the CSCS requirements listed in Specif ication 3.9.B. 2 are satisfied.

The t3RC shall be notified within 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> of the situation, the precautions to be taken during this period and the plans 4

to return the failed component to an

)

operable state.

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Anendnent tb. 28

Revised 11-30-79 i

g"m-3.9 13AS ES

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f The objective of this specification is to assure an adequate source of electrical power to op0 rate f acilities to cool the unit during shutdown and to operate the engineered safeguards following an necident. There are three cources of niternating current el ec t rie n t enerry avullnblo, namely, the 161-kV transmission system, the nucienr generating units, and the diesel generators.

The 161-kV of f site power supply consists of tw lines which are fed from different sections of the TVA 161-kV grid.

In the normal mode of operation, the 161-kV system is operating and four diesel generators are operational.

If one diesel generator is out of service, there normally remain'the 161-kV sources, and the other three diesel generators.

For a diesel generator to be l

considered operable its associated 125 V battery must be operable.

The minimum fuel oil requirement of 103,300 gallons is sufficient for 7 days of full load operation of 3 diesels and is conservatively based on availability of a replenishment supply.

Offsita noxiliary pnver for 14rowns Ferry Nuclent Plant Unit 3 is nupplied from two neurcen: the unit ot ntien trnnaformers from the enin generator or the 161-kV tran9ninnion syntem through the cooling tower transformers. If a cooling tower trnne former in lont. the unit enn continue to operate since the ctation t r an n fo rme r it in cervice, the other cooling tower transformer is available, A

and four diecci fenerators are operational.

A 4-kV shutdown board is allowed to be out of operation for a btief period to allow for maintenance and testing, providing all remaining 4-kV shutdown boards and associated diesel generators CS, RHR, (LPCI and Containment Cooling) Systems supplied by the remaining 4-kV shutdown boards, and all emergency 480 V power i

boards arc operable.

There are five 250-volt d-c battery systems each of which I

consists of a battery, battery charger, and distribution equipment.

Three of these systems provide power for unit control functions, operative power for unit motor loads, and alternative dri ve powe r f or a 115-volt a-c unit pref erred motor-generator set.

One 250-volt d-c system provides power for common plant and transmission system control functions, drive power for a 115-volt a-c plant preferred motor-generator set, and emergency drive power f or cer tain unit large motor loads. The fifth battery system delivers control power to a 4-kV shutdown board.

The 250-Volt de system is so arranged, and the batteries sized such, that the loss of any one unit battery will not prevent the safe shutdown and cooldown of all three units in the event of the loss of offsite power and a denien basis accident in any one unit.

Loss of contrn1 power to any engineered safeguard control 327

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Amen & ent No. 28