ML19242A774

Forwards,Per s Ramos Request,Analyses of Design Basis Accident & Loca,In Support of Renewal of License R-47

ML19242A774
Person / Time
Site:	Lynchburg Research Center
Issue date:	08/01/1979
From:	Olsen A BABCOCK & WILCOX CO.
To:	Reid R Office of Nuclear Reactor Regulation
References
NUDOCS 7908060222
Download: ML19242A774 (7)

Text

i.

Babcock &%iilcox

, s #

r- .,

POR a l 'n. ! , - Vi ^ b T- r

_ ;) . ,111

u st 1, 1919 Mr. ronert W ield, Chief Operating '

< .cLors Granch 74 DIV i t '(41 o f 0;ri f;

• i: r i':f r f t :r b IJ . S . ic l e.i r R.Julatary Cem.i :lon

hiu3 ten, D. C. ?O%S

' 2> ject: I. i c t ib re al, R-47, di.eket 50-99

(.cn t !

• cn:

In .. m ;e to a *

m st f rc. "r.

v ,. c, I .it' ic , ,"

the .n'al: s of t ;.o D< u pn " ;is i it 1 ut .:nd tht io of C: > 1 :, u t Ac lii o t for the Iq n .c hb u r y, I io l r otur (T.: R) , lit t o . PA 7 .

t ibi: ir to .upport :y r. qu- ,t for rm - il of th  ! ii o Sincerely, 2 ' E, COCK & W iliOX Ltr c a.NY L:, nc hbu rg E< st .it ch Cen t er

,/ } ( 2f).-lL~

A. F 0); en I,i c ; A? " ,:rator rbf rne, ore

.bb zirVUto or is a

7 9 08 06 02A2.

-u C fj . ;f ldE !) 9 U ', ' w I :,

The har1rde >

.i'ie2diti ictor t Oc t at ien3 at 1000 a srise chiefly from the p ro.!uo t ii'n ad at t < cl-ition of fi ;Ien uodu<ts 4.nce tho a : . I ...um cr.W ble accident w'uld not result in the ici. ,so of fi sion productr, a P' i r,n R>:is accident (h ' A) .omly

.n , t'ut the saf.:ty control 1, , o fail to iall ,nto a co re following the :. i: ' .ua credible accis :n t . The 1 metor it inn e sn by ltin; t II C u pil fuel f ri q a Cent 1 11 elt 'nt fo o enhale IOT lhL C. t '

reaCtiVily.

Thi unt of fool is 2p p r, it ely ru -thi rd of a f uel ele: nt ,.hich . , o i- en s 2.f of the total fi , ion pr. 'uc t " n at or y of +'m 'o n fh e thyroid nad , ,ol e Smiy i '- >s were al~nlat d iny the 'w o c a 6 iilcox i.0C AC L ( cc: .pu t e r c ade f o r c a l c u l a t i n g, iho int e at ed c: , fi oT aitt cat mie s se in .icc<>rd nce ,sith RG1.4. 'l h r U' ' rt

, t, a ,

a nl l y i r r t i f i(. d cedo ,

ed for DBA do e calrulati..ns by n %'.

n pt i t - ' + in the c:il cul at t on ar'

1. The v. otor 1.. o;., :te' at I C ad r. .. For %5 d iys

2. So i r. dit is t -n for 'h. 1 tp of ,

i> in tk building

3. :o ;tean v ia. hrs t h e- top of the , ool ca t e r. '

4. Cos pe t (_en t of t' e  : 1 , " are carri.>d to t i .e top o f t he pool s ter ad o pe. Fo rt p. - rc e n t. of the neble ;a s cf yes to ti>e reur tir.

':o l i d fi: ; ion pr s ine t s cent ribut t to +he at only by n: r et iinc of sinht c' ,e;ure frco the i.PR. since thu ;it e hv d i . .nt n ut the 1.P R '

not line of sieht 4nd the ,

ro t line of site int 'th t he ' r'R . 50

• c rs s re not ce' ' tad in the d- alet ' . ion.

di tant, <, o l i d fi: lon p mda-t m s rhe it ,

-phe ri e d; o -ii.n r<ct.n, -d in t i. '

c.a culat on s obtained ,' r o m t! o MC wite eteorolo;ical tudy p. r f o i . 3d for the Ce :reial ':n c i c a r Fuel 3

Plant located on ite The result s of t he rel e :;e are :s f oll, s Radiation Do- s at t 'e e Tinit of tre -11u, ion

.\ re a ('80m) , 2 liou r Do ';e

'G o l e t'o d y 0.013 raa Thytoid 0.12 rem g, A T' D P. O O i.i k TJk'ih Mpgiih,ldDidWN

.a 3

468 2:1

,e calt ulation are e a i de r ed < eaae r it 4 ' '

.ince M o d t i: . of re ict or e p r .a t i on is nch li,n).e r t! m is 1 'u 1 :, to octur.

LOCA . _'.' M.Y S I.S._ -

A cond ;iccident that was com ' Ar re d a s ie r ' 'u r . rit st, is t 'ie le >

o f c i a l . i n t_

from the 1 P il p . a l . "12 i c c c . .'. n r , thit tho 1. "s hr "' en cd ratiny, for five e , n :'e t u t . = .' y, ; at 1000 i', en a o! ic .:u b d nillitine break occurs in the pool outlet pipe at the . int t;o re t'e pipe enters tb<

uct ion end of the p1 1'.ary coolant pu a.

We t.pe rat o r in >d t o

• a; no + : e :1

thi < r4 41 occurr, h ewi er, the reactor ut c: :<t i cally 1 s a n the real 1, s el ac eps below 11.5' i- 'e

, the core, p l c.c i n g, t h e re act or i n t% d ' c as !.e a t t s ide .

The tir. nece ;a r: for the rol to drain is deri ul G s- eq: ition (1) by n as ide ring the rate o f ch a of the rm o] level ub:n t h .- 6" J1ar ter , ,eenle

'0 outlet pipe is ;ecerod:

+

h O

A dh r =

S ,-

(1) b

. 6 11

- ,n.

I whe re

- = Line t o di c rease pool ]< el f: 'm h 1- to h o

~

A - C'rlace a rea of ' on1 9 Ciols <ecii al aica oi ,utlet pipe p, = .*i c c e l e r a t i on < ~ Iavity h - m > 1;h t ot w 1t e r l e' el A '- c'u l e t .

pe F- :atien (1) p red i ct s that the 1 e .s pool 1. ', e l sc: vill occur 03 e m is after the start of the accid .!t. Th e core will be c >1.tely 'nces cred in -

', 6 ', ends (441 sec. after reactor "butdczn) corte.veldi to an tve ra ;, ' lo< , ate of l'+07 al s /ri n .

m vs A PN p] A' A'j P1.

• > *F*

b

,' ;nk .1:4 * ; r ,-* i!

+

t1 *' <,.q ' '\-) d R, f , %' , .s th . **v < ' ,a Qp h h. b,'e\y'.\ c'c<b 1  : . m. .i

.3u w 's a v" y il t ~ ~a d 1

4{6 '\j 'bl N qrg 468 cJL

The .1' 'uel pla'e c 1:nu i u ;, t. , rature is cal en'a i d fot thi' .

nt en ;r,iur the e r : re I :, stutdoxn for '4'41 m o n &, ' . f o . e it is totally : 1cc cred.

N ' <

iliv ute th. u nh the ci re during thi: '44 1 > c ci c ol i r m .- t ea l p i i > c i s'. >

a Ic,rv i ount of fetced cent?ctive ecol in , s.iich > n t .n ns the uitial fuel t te e t .it u r e unt il the ciire i: uncevered. .\ f t e r um ering, aly .t ural air co, 4 etien t o 1: the core The : n . i i :. ; i t t!n id as.> d for th 1. F ' .' i in t ' d u. d for t i. ef tv

.nal'lis of tin- i !.! R -

ind L'. .\ R in chich INA 1 l ii ;w ol < >n 1 1 ! !' a ri-

- n t :, hi t e t h< ,,.re c.in ac t uall y "1ci ered i l d t l o- 1 ' . '~ n I ti i r o < <: re is f -

a fonetion of t '

t r- >

nred.

w t a a ,i :. : I s is e i; en m 7,ation useui tn . tais 3 1 "4 :.

-c p

x dt

- Q(t) - hA^; (2) ch. . re

=

'c-T3 =7 .- rm u re i iiff...nce 1 m en '

ien*

air .nd '

>?1 elid (Cr')

Q(t) Jiosion product d cay in-.3 t orce (? h')

hA P ro 'uc t of t' equivalent , ,! u ral c e:tvee t : on co 1 ric . .n t :n d < . e t i..e t is e h e :< t ti ><>:r

ica of on. .'l- ent P.J / " F)

,c = The e#fective heat c,.pacity of ~ r uc1 ole nt h

( ".J sec/"F) ne vaine of (h A) u: ed in t i ie Ll'R .!rul :i s is ;i s -n vy :

(6.4 x 10 hA 7.75 x-10 + U . 3 ): ?.s / F

~iS i s ' ,! ue 4 s 0. t;3 t i: , thu valu4 ~ed fo r the .#, 1 >l :it .n.e the LPR fuel ele: :nt h .e 10 plate > ra t he r th m 18 and ...e 'u.it t .tr : fe r ena per pl .it e is ipp rox i m t ely lu:11.

.n IPR fuel cl. ,s b d on the The e f f e e t i.ve in a t c a p ., ' i t v (rep) of -

cat

'c after p used in the F.J R :m a : ' tii for m R type fuel ele at .ut for the I

t-rodoced rher of fuel plat as '" an U'R ele: ent.

< eat c,pacity for an

!.PR el nt ed 'n t his :a l', : i: i: - ,_n by:

-_ 3 A /_ O Or7

=

3.5 x 10 ~ "'. mc/oF '-t V U L. .J J

'P la. s tt a. . . . (

gt i a

's i i ' l ,! },' MA. f ij as -(it, ->l c. J-ti ua $ '\ ,i w g? .

+ .. , *. g *, L:e* i

.J L.; L , , ;3 ,

3_

ne in at mum, g(t ) , is ni ven in tne 'ay s' i .. ne r c.iu it ion for .t. 1y 'o at

'rodpction .ift.' hotd.4n:

-o - (t

• O -n',]P g(t) 6.22 x 10 ~[t o c r.e)

,;be re t ti. aft.r but J %n F , actor >

, .atim tir.e P t.cn a t i:. 1

.s e r o f t h e o l t . ent

'!1; e o ..itin.p, ,- ,a*r of the ele.ent, P g, ur ed in thi: ..il y n i s 1: thu acer: ..'e pese r pr oduced in an el :,;nt at 1000 kW r ni t i pli ed by the radial peak to av rage r at io of t he TPR (1.5). A i r, 'athod was al s.o used in the N R a n d U V.'1 R .nalysis.

We react or op at in ; t ir e, T, u s . . d w. > , 5de, as < a t od p revi o' sly.

Con 5fning t! < p ir ters int o r

at i on (2) y i e l d:; .

d? -0.2 , --0.2 1.72

1. C .; [ t - (trf) - 1.31 x 10 6 ]:

at

- 1.03 x 10 n is t o n.i t i . n - <

il s 'd for 4 a .i . . 100 , < not e r. Thc 1

1. a t air o

t( pe ra t ure, T a,

.d as 100 F.

The rc: ult > of th_a < putation are shown in Fi < g u re 1. Th e txiron e l .n!d i n g t .- perature was feund to 751"F at. " 1,94 he.u r: af t er th- 4 t a r '.- of file accident shirh ia wall holow the clad i '

I ' i n i, p i > i n t, of l !' .' O f .

It is t he re fore concluded that the ' c:, s of r < >ol ant fro- ti.e IPR due to a evere b re ak in the surlet pipe, which is h i r11 3 enlikely, will iat t . ul t :n fuel plate c.e l t i n g .

m 1 lrl 6.un _ ", o t

_ 3 7 . .

2

./ i

!4 -- ) \ ~

Fi p ,u re 1. Fue1 C1.i h! ) n:, . c . . u r . i t u t ,. '

,> mt dmn fir >

12 t)0 -

1100 -

L

' ' t i ..)

C c

UO -

a c

b , .

D L )I.)

C-2 7i)U N N

5 u

v s h00 -

_'w~. _ _ ~ ,

O E*

• 3(10

'4 ( ) 0 "

J30

~

~

i 200 .-

100

_1- 1 _ ___s _ _ _ L _ _ _ 1. . L __ _4  ! _ __1. 1 .f____t t____..____

2 4 6 8 10 12 14 20 16 18 22 2. 26 Tim tfter Rhutdm.m (k s e c )

or" 468 2A

1. D.y ; .e t t , S . Q . , f.( >t 'M :1. 3d 1.' ' .K I; P r o, . r l'o r Det e r :ai n:it i on o f i n t e g r.it t d Di s e ' From Af ilso nie e l c :n is, .i'( .D - 1 M - 6 3 8 , ?mie l '> / 8 .

2. liol; .. n m , E. G., Sa fo !rd % cort for Open P

9 S t a t u s Report on the N ,a t' ,t n act or eith 1,ei<.ed Safety

'.al;ais, I on A1: ros Se l ent i fi c iahoratory, LA-4192, July 19b9.

5. "em, .I . I.., Pcv i . d a fe ty An al; :i: "eport in Support of

. 'n 'c . nt to License R-66 for Two "ey,awatt 0; e ra t i on, G'AR-l S , Pa rt I. , Oct. 19/0.

?

468 256