ML19319A833

Forwards Request for Addl Info Required for Facility ECCS Analysis Review

ML19319A833
Person / Time
Site:	Oconee
Issue date:	10/15/1975
From:	Purple R Office of Nuclear Reactor Regulation
To:	Parker W DUKE POWER CO.
References
NUDOCS 7912190865
Download: ML19319A833 (5)

Text

,

w.

5 b

- w;,3 e

W MA DISTRIBUTION Docket Files (3)

Docket Nos. 50-269 OCT 151975 NRC PDR (3) h tocal Pon 50-270 ORB #1 Reading and 50-287 -

KRGoller-#

y v ' of.im {c TJCarter'.!

~

4

.. A 3.~4 M.

^

. T.. :J.

/ / 1 y y" u;

OEDD 7

7 J

,w OIGE. (3),

F-Duke Powsk Company

• 1 RAPurple,I

, c..

ATIW Mr. William O. Parker, Jr.

G2ech Vice President CHrrammell

~s Steam Production SMSheppard 0.

P. O. Box 2178

} ',

SVarga,

1 422 South Church Street.

DEisenhut?

q;

^

I~

Charlotte n

a;j %y., x,q., North.% Carolina' '28242 IBAbernathy, DTIE,. 9 g'

e 4

n

. g J.

p.w u.

a Jo z: wmx -

am. - ACRS (16):

.n

. w w 9 ~S Gentleman ~:, 4: M k : M ' W,,.', w n:.

if Se

. w

. :.1 - -

W fa

~,. ww.

u-

.e v m,HP

~.m

.u-4; egpg&m,pegww;. m w.wn ~ :mWC; o ~a-

~s W 4 ' E m'W go a e:y; 70.y9. m~wwA m.O

. ~ - ~

n...

my 0

Wya.ww.g sy.

wnwa m

u m W '.,v l' V

B W. _ Oth. ' enclosure 4 7.v;

_7W, require far~ou.,t_o this letter' identifies' additional..information tha.t mm.- n m

..w w

n.ms,n.... ~ r revie~w of the Oconee Nu g.

.a n' %n +,n. a n.m n.m n.,u

. v.s.,,. m. m..,m.. clear' Station ECCS analysis 6, l*

~ cl ' 3 c

W, -

?

n m n u.

e As noted in "our T1stter,to you" dated 's n.

a a.:

a ww om, ~.: m.. +.,:s n. a,.

., n y

>.~

.,. ~

e,.,. ~;

y.

(complete [odr7evalsationToffyour'RCC5~ analysis prior,to issui

~

Octoberf14,19757we will no#:,,

~

~

tot' $

E cy, g ge.

y-# '

you'have

" power l1111mit curves'for" ope; requested that'would ir.cMhte rod w "drawa t

v iration of Un 7 i

daysWh.. -Q,y~MWiM.py,it 1: beybnd 250 effektive' 1911 ' '

+

.j s

Oy yA y lg pc C ",

; %

.G:.L. R,. M

,,.m o. m: 'i,

,+ n;u w ny~

m.. s,.=

s,

~

.w,

+> <:

r rm,.

u

~

o..-.* w.

,A.- m, j.u, ~, s.

81acerely

.s :

s W>

W; j

w, _'

j :. _.,f

^~'

, p:

s g g"33.g T.7- _;,,'K &

a.

...m, t,

~.

s.

s 3 n

,n s

g te.xyu.8

<7

~ original signed by'.

• c, m..

r w

,g

'~

R. A. Npk

?

3

~(

.h )

.-P

. Robert A. Purple,'Chieff

.c 3

.c,

... i. _. * ~'.A Operating Reactors Branch #1 N, e (l~

- m. vision of. Reactor Licens_ing'. y,.' -

u Di

~

e y

n 'N

,y

s.."- f

BDCl.osur$2'- # D.W

[

-- E Retpasst for Mitiona1,~ SDp,55N.,f[ 'w' Nii M.r.d? N<

, ? '-'

5

^

p 1

'O T

',3 s

3.

J n

Informatica? ;

7 d ';,, K j h'7 g d '( " -

' ~ '

M - ;f 1 &

' i e.svM mg 9,y w %e w.7, u.+.;% w Q'k;* pF ',&E -

=p.

if

" ;* 4;s s CCs!:_ -

-A..

p. 4, q s -

b 4

p,.,.

4 p,3 3

4 r y

t 3v

. _ p, a. y y.

x.

s-es n

%ef

. m..

n jq d _.

g n WQup Mp p W(W[..

,g

,s, _,,.

,e

.z y s n.,;w v; s, 4 h O h.;k y ~ w,'[&g m.. %j. < g e f f'% ;,['

?

h gyp _\\ ;f.Wyw..*~ m-Q_u :x y 4 W:.d '

,s

- ~

u m.

j e

e

.':Q,,y a';q. M y h y f Q Q g'"*}r. av.C_h i : ~ _L*^*lRw e,4

' ~ ~, m,, - ^ _~

~

j

' ~ '

xi W' T.M.& =wW'*y

~

%' :K x..

> ~:.h f KM u s

. ~

u c

e(<

y

pQf, v.~

, j L

s,4 % N L. 'a 9'e s-g,~

Y_

..p y.

.3

<.- e s..j..ta d; yY ' *%,N: "n L,

W W; ' 'm% 3,,;$ Q <:'-v % *:. ~ % x; Q. M T $ ;;;,,

fa

&-; N s W 7_

+'%

=4

l. _'.

LRA'*

y a

_w a w, n.s.~Q.q ),,0. o\\'n Q.%.AJ,f, f,&. n?'n,:,m y;,@;.~

u

,;,g %, w+ ~e m a, s w & ; S, W & &.~ m %,,M+

. pe j

. ~u d.'

- r42 '~ 2

'N.

. - ;,, - w 4

S

~

y us - -

., s, O

1 v s

-+.

w.u m. n..;$,, i 'm% 'N

~

n.

+& y,.

} ' $;. A.c..? p } >. '

.w...

o V

m m

m x

m ' w. ;.6 a.e ? ;4) ' '.

o a p/

v g& :mergy.y s an.

RAP g,e %

^ eu.a gg4 p m~ ~ - ~ mn_

}%

gg s

_g g m M c%&T V9WX 9 '~:W-W %

y aa:R

' Am sd' ?

1 r

Wate ABC 3IS (Ene. 9 5.m) ABCat 9240gn%n,gNG a ;s. n..nwesw poemme omes m l

n a _ yWu w~n t

, u_,qggxw 3

, ggggwgggy.seeaeQy pg pg;; W:g ~

e gg.w.m _

7912190 k f

e t '

t

< e

,,. ):

i 7.

s

-g-g-

Duk!EPower' Comp:ny; 2-15 M c

cc: ~Mr. William L. Porter Duke Power.-Company P. O." Box 2178 422-South Church' Street Charlotte, North-Carolina 28242-

..s.

Mr.-Troy-B. Conner Conner, Hadlock'&-Knotts 1747 Pennsylvania Avenue, IN

~

Washington, D. C..

20006.

Oconee Public Library 201 South Spring Street i

Walhalla, South Carolina 296'*1 i

5 8

(

4 4

x s

h.

. -q

,p i'

• s4 s

+

t a

g 7. g.

- - - <- - s i

.n%g. -

u.

x

?

X

's

. ^

..~

et s

yyi _

.x,

'~

X.

q<c

~

vy,

w r

,R

.:l I.,

~

p.

[,lp,*1 ; cst }f or Addi t.ionn1 Inf orrri t i:ni.

.1

=

Oconce-1, 2, 3 m

r.

4 11; 'UltifregardTtoLlic-single'failureanalysis,_yvurdiscissionis

- finsuf ficient. t d v11rni. an adequate eva16ation.

1a)) ~; ?Confirith5t L veur annivnes considered a nin::le f:n1.1nre or operator err or :that. causes any canually ~ cconolled.

~

~

ccicetrica.tly-rperated valve to smee' to a ;iceir ten that lcould ntiWtocly aff ect the ECCS (i.e., Service 'fater I

System Vrives,JBuildin;; Spray Sys:te:a Valven, itoren Dilutio.n Vatven, etc.).

b.); Drewin;; P0 102A1 chos8 LPI volven LP-V4A and L7 V4B te be tuorriall. ~ clover!.

Tre allow :operat f.on of the I.PI -to-LPI cr'onsover'rubac<1uent to a CTT line break and a ninnie ac tive. car.ypsnent failure. these valves must he required by Station -lechnienl: Specificati<,ns t.o be opeu, power

. reninved. and breakers locked. open.

~

c.) :Your'cvaluntlen on par.c.-2 of Attachment 3'fe?

tha -Dit

.. ( cooler sinibtf nud out let ' valves. dora:. not : nppear to be correct. ; For:,a CFT line breck and on inadve tant

^

lclonorettif.a valve'in the unaffectcJ low prr3cora in-ij ection J ina, the - LPI-t o-LPI ' crossover '~tteul d d - rendered,

LineffectI ve.'

Station Technical S;iecificatiene trat 3 require ; t ht pover.' b<r dircorinccted and breckbra.tocked open ' to; LP;^ r'ator-oporated. valves downst ren:O o f the s-L LPI-to-LP!'_. cro::sover (valves nor:.;tily open) at:d that.'

a_periodi.' tent'bc performed'to.starn of abustn:11. leakage e

iofJ thef check-valves in the ILPI fulection Ili es inside i

- contai n.i3en t. - Thene changes provide further assurcuce

~

tthat; nbt nd.mt-core coolin<; 1s 'available for a. Cr1 i

linc

break'.nnd nininize The potential for a -LOCA estnide -

r contai ntien tr.

I~

t-p

+

y r

NA

~

~

Jk

?

(

s b

.'r "g

4

},- _'

k".:~

)

4 j

m e, x, +.

.a_

ps'

~s',~

g

~

r s s.. y g

,u

_.e, :,. x y 49

[

s s

g,.

w

. ~. +

3^

y ;- ~

q

p

]-

n

' w g..,

,s+.

N'

, :L zg

fff.;Y f=

q u

g y

, y 3

p ~

. 2_.

s

-w -

c. d;) ~ WIN M p.i O t Jhu falliern open: of a CrT vc*"

~

ci i ve,.

' thu 'poniLion it ht ;this;is ~a very lou probah!1it -

event-is not 6fl'cient juritification o f t :e 8

Oconc6f denit;sm Technical Specifications wre:

r c. -

. quirc : thnt, prNerf t.o : thes6 valven be dinconne et t 6 Ehnd~the bedukers locked.open.

- c.)\\ $111e~ follouhi'; rotor-operated valves' do not appear to 3 be addre::ned in Attachment 3: L

~

y t !!P-27 LP-17 l!P-24~

-LP-18

11P--25

• LP-21 LP-22

. Confirm thit these valv s could not move to a puoition that. coult adversely cficer F.CCS periorinance.

~

2.'

With re<*ard t.o t.lc dJ scussion on subner;;est equipr4nt. She analysis is insuffieleti:.i.nallov an adequate evaluhtlun.

5 ecify tbc scope

_ ofi t.lw study fiFleras of systeniconsidered in the analysis.

P

' that pont-h0C\\ leur.-s cru coolini; requiremeats ucr e ee:twidered (i.e..

Cunfirm syst.casiitteded in:linit boric acid concentration in t.1 e reactor Nssel).

Provide-the !.anL c ior the ~ coin:1usion that 'certcIn : t% tor buihling isointion*valven -could be closed upon F.S actuatien os fore becenim:

, submerged.

For -tiwie valves ~

indicato the cxpect ed tinn of isolation af ter a werstL-case break =1ocation and compare to the,;pected'. time at fuhich-the water icvel'in the semp uould first reach thi v'alve rotor.

Specify1 the:heintit above.the containment. floor of each of these valves 3.

S'ith r' gard to the Oconce 1 ECCS cvaluation (Attac!rmt 2);

e m

' a.)

Par,c; 2::descr ibe: the testa and provide the caleviations v

tipon which: the' CrT line resistance'is based. -

{

- bi)). Page;9Eindicates.that the.' dEFLOOD cede. version names arc

' jdifferent. enlri:;uren 4~and 8.

If the coden ate not the T

• same,l describe the.differencesi

'c 4 Figur s14"d d 6:

e o.

It :Is not obvjous-from thesc Plots that (flooding : r.ites?ofi:less fthan* 1 in/sce are not predicted.

x

( Anlindiented. in theistat f 's "flinlmum Requirtuents for

[

s -

".: ECCS; Brealf Spectrum Subnittals" ' dated ' April 25. 1975, re '

~)

l 1 hub: nit.ithesuifI;;urce ut fli'zine,'engineerinn graph p iper

.t

.toTsuch'a-scale:astto.alluu jicater reading accuracy.

'{;

f,~',

~,_

.1

~

b y.

,.n D&

j

9",

Y f

e G

r

x

c. ~

m v.*w= " = ::

...M 'Ti AW s

~ '. " ~l f$M ~,1/?p W.M.% ~p;;-, n%( n ' 1' $x. ?

P QW

, Et -

i gyrm y

m z-w v

-+t'O

~

N r

a n J D f Q'm 2 :^npa w--

'~'

- r

' y: ]

Q -

., s.._ '9 ;

%.p; -

7.-

w.,

?? = l f:

,4 k

?.

W mg 7 m,

yj

.p

,s q m rr r

y

' n.*

~

-yc

, q, M

sd.)[FJhurM2: _ci::. plain yhat in enusing the diet.Jni:t. necond.

i ff

f' ref 3 ikd.}Mjap;.i!Out (20Mecondn and; relat c tr the g' l.same pint %,; thef Leo -Iodt ' elevation in I:AW 10'n3. _

R'c

. _ " 'zs J

m s

c v..

y

.,M,

, 'es)X FJ g6ce!:5 : 1.:pinini the? drop in heat' transfer co rficient a

C f. '

- ~

st fabout:55..: mconds1(relative to"BAU-10103).

4

.r

_...m._

4 i ~

f.)(1xplain:.';hyih"c hot" spot _shJfted!to_the~ unruptured-

^

q.

• '.fuode?ot? t.he;2-foot arid ' 4-foot 7

~

elevation ~ (rclar!/zu to

' ~

t. BAlf-1010'.) V

'n.

j g.)' LProvide 'the.vf.l ue of vdlumetric averane f ucl t e r;ierature..

l

, ansumed zi:i-thes oconce 1 'calcula tions. '(at 18 l u/f t eith<

2580*F.cinh tenperature).-

K?

h.) 'It is notUcpperent that you. have suffic.fently rpecified' z andljust liied all input pararacters revised f or 'the

,,1

.Oconces t-una1.yc is.

For~ examp1., - no exp1nnat. inn * :a.

' c givene for the changes in 'initir.1 pin pressure f.pa.;c 7)

~

relativci to t he gencric cal cula tion -in BAW-10102.

Confirm t hat.y nll-input ebmbos 4va been idntji::ed

~

~

nnd.expinined.

J.

... ~..

J4. ; 31t 11s ~ poted ; that )s. tor-operated - valves LP-211 1 P-22 ord lip-24 f rom -thchlMST are $hown norma 11y closed.

It appe rs that, assuof"g sufficient statie-hbad-ucre availabic, the potentic) far a vater-g

_ s hammar uben ECC :is Jnjected. into La ' dry line 'votild i n redOced O

iconsiderably,if thetis valves ucre.normallylleft cl-Picase Aliscuss.

~

n.

+

c r5. i 1)incusa hoeli Ms Jintended that' the LPI-to-1.PI crossover vould-be -

k act,uated af t.cr. si.CrT;1ine bren!r ~(and 'a failiire of the t'.icscl on the l

j una f f ected ;1w prcscure injectioniline)... noting. that one'of the-

~

4 cerossover: valve r:ntors would also be r.cudered inoperabic.

g x

':D

{

4 i M 'i

• }

f 5 -

e I $

w

,4 7

+

.+-:

y

[ h.-

[

3'~'

5 s

p_.

f

}T e

g

/..-

'+

t' e

+

t v

p g l.

sf*

e,

w i

':y .

N; -_

~

),,

l

. y w

w m

4. s y.

r :..e

.t

~

- - x

+ -

aL%

..m-N }

[-f

.f..,

y c ?

pp q -'

• w.,.

p pg i-q

-g<

m;

.h[@

- ^

fp-

_.,., y y',', s" ye

_gg.,

r

% ~

,,; % Q[ ',

?._

~

t 8

w _ gb::c -

s li " ~

• l' + j;..

3 d

? ; e4

~. p w'

w%

tm.,

, c_.--

1

.1

,g

,