ML20128C767

Forwards Method & Calculations Used to Evaluate Total Failure of Util Pressurized off-gas Sys

ML20128C767
Person / Time
Site:	Monticello
Issue date:	11/30/1971
From:	Zavadoski R US ATOMIC ENERGY COMMISSION (AEC)
To:	Grill R US ATOMIC ENERGY COMMISSION (AEC)
References
NUDOCS 9212040526
Download: ML20128C767 (8)

Text

,

f'd J43 DR h0VSO M R. P. Qrill, Chief, Site Safety Dranch, IRL AOCHDir ANALYSIS CF KNfmPJJD OPP-GAS SYSHM Attachmi are tie nettrx1 ard calculations used to evaluate the total failure of the 7txiticello Pressurized Off Oas Systora.

Urder the extreruely conservative conitticna W11ch were usui in tre analysin the doses tlat were obtajned were as follows:

Wole Dody 2.4 Ran

'nytnid 2.4 Ran a /20}&Iv R. W ZavManM Site Safety Branch Division of Beactor Licensing l

Enclosure Accident Analysis -

lenticello oc w/ enclosure:

H. R. Denton R. S. Iby1 D. YJMth V. Benaroya Distribution:

DRL Rdg.

Suppl.

S&RS Personnel i SSB Rdg.

! S&RS Rdg.

oma, DR D . .. . . . . . . . .

..g.g.L sunar , RKayados.ki;M. .. ..

11/26/71 ~ ~ = =

is,m ac..i.E ... - ..nm,m 4b . . . .. --

9212040526 DR 711130 ADOCK 05000263 PDR

-u. _ - . . . - .m

,,p ._.

.g -. - - * . ~ _ . _ _ _ . __.m . . _ - - - _ mm . - _ _ _. m. _ _ . _,

t s .  :

J.

e 1

ID.'TricrJln - f.cc)P.7tf /J1/J.E.1') 0F 11E U O D'.F.D O.'T GA" CONCdlT i

i 1

{ Input

.27 CJ 5 x[  ;:

).

e <,

f 4

TA?E I TA!M 2 TANK 3 T/E 4 TAL'K 5 i 12h f.t. IEh f.t. 22h f.t. 32b f.t. 32 h T.t.

Oh d . t . ^, 12n d.t. 24h d.t. 36h d.t. 48 h d.t.

i

-- - ~ ' ~ ~

f . <. . r fill t i;. -

I I

i d.t. = de o/ Lame Acca~pt icr.n

3. Irp:t it .27 Curirc/cw (ar:"r 30 ;n rt r7), t i!Lci c mixt ur >.

2. 'Welv. hourn are required to fill one t0nh.

3 All five tanho rupture nimitaneously upon completlen of fill 3ng the fifth tard.

4. farety Guide Meteorology in uncd for a ground 3evel releace with Pasquill

Type F stability and 1 Wcea at a dictance of 500 m.

i S. Condencer in-lealace in 28 sc1H .

6. Credit in taken for decay during the filling operation arrl for dead I atorace in the first foa" t?.nho.

4 1 A. Mnle Bady Doce Tm total initial Curje inventory for $sotopa 1 in cach tanh (without credit for decay on filling) is pc -

A1= 11(g)x12hrx3600ceexcarg le 1@ pc 1

I When credit is taken for the duration of the fill, the inventory of isotope-1 is j 0

i =A1f1 j where p

i

=f O12he 1Ddt 12h

/ dt i,

i

, ._-__.. _ . . _ . . . . . . . _ . . _ . , _ _ _ . . . - - . _ . ._, .,J.

. ,-- i i * ,

~

i i

W1y;n credit la taken for duny for 11 hourn fi 1

, r ,

C i

= Affi i 11 .

. wlere f yy in the decay fsetor for icotope 1.  ;

then all five tanks are considered with crcdit for fill tnl dead storage l decay =l C y a Ayy f .,.Af fg y 12+^1 iI2440 1136 I

1. Aff) l i hf C1 = h .2Y) (1+TT11) -

The 0-2 he hhae D2Jy Dato 13 .;

fune = 1/h(I C yg E ) (X/Q) 1 .. ,

2  :.

(X/Q) = 2.1x10 'nechr' (frea S?.foty Gui'Je)

@ 901), F a)d 1 Wec, Ground level relcam.

Doce = 5 25x10-4 (t c13 E) i 1

See Table 1 for Evaluation of I C 3g E i 1 a

t k

i l'

I I

i f I

i i ,

i I 1 .

e jr i

I .

t i

...,p--m, em----,-- g... e,.-g ..u, m,+ ',.r ,,,..mn.,.  ;, 4v.,,.y -,..e,-,-,,,n,,,,--,'wr.,~.n.-r- ,g,, m,w.r-+ ,,0..",,._gn.,m-.,,,,b

,1 1- . .

l 00ulod IG l'C.TI.CistJD AOCIIEttr A!UM.Z  !,

l i I

• ?

i TABIE 1 r

~

! EUCE!Tf t 1/2 A cec Sourec# f 3

f 12 I

24 36 I

4B " 11 pc/cee Yr 83m 114 m 3.04(-4) 6.7 6(3) . 220 .011 .000 0 0 .011 f i Ty 85n 4 36h 4 38(-5) 1 56(4) .449 .151 .023 .003 .001 .177  !

, Kr 85 10 76y 2.31(-9) 2.01(1) 1 1 1 1 1 4 i ry 87 78 m 1.48(-4) 4.17(4)- .156 .002 .000 0 0 .002 .

rr 88 2 77h 6.83(-5) 4.62(4) . 319 .051 .003 .000 0 .054  !

Kr 89 3 2m 3 6)(-3) 7 19(2) .006 0 0 0 0 0 Xe 131m 12d 6.O(-7) 4.c2()) 985 972 944 .917- .891- 3 723

!  : Xe 133m 2 3d 3.48(-6) 4 9f'(2) ..9P8 .860 .740 .636 548 2 785 t j Xe 133 b.27d 1.52(-6) 1.34(4) 959 936 .877 .821 769 3 403 i

Xe 135m 15 6m 7 55(-4) 2.G (4) .031 0 0 0 0 0  !

i Xe 137 4.2m 2 96(-3) a.65(3) .003 0 0 0- 0- 0 i Xe 133 17. Cn . 6.00(-4) 7 16(4) .034 0 0 0 0 0 l' i

f g(1+If3y) .A g C; F

~y(N) - oEg1 l

f curiec curies L*.cv  !

t

? .223 292 65 .0418 27 L 529 674 356 .h4 160 2 5 .

.87 4.4 .24 1.1 i

.156 1801 282 2.8 792  !

i 336 1996 672 2.08 1395 i- .006 31 .2193 .4 l' 4.655 1 73 8.1 .16 13 '

3 514 22 77 3 97 75 4 .031 968 -30 527 15 7 i 1.0S1 2091 2260 -62.62 1400 j- .003 114 9 1.46 1.2

.034 3093 105- 2 32 241 l EC Ey 3 = 4553 i

j # See Shble 6-1 pp. 53-54 in NSP, Manticello Nuclear Generating Plant,

3 Answers to DRL Questions of June 3,1971, October 1971.

i' i.

Co cent: Thi cource tenn ic a reasonable diffusion mixture.

y .

i j; I 1

1

+  ?

e - y 1

- - - - - . -,,,-..___.-.a.,

,. ._ ,...,,.s -

_....,._...,_,_,,-,.,._,._.._,_;___.,m...,__.-,_,......_m.,_-m._,_

t

.I 4  !

i .

. j i

l i

Daae = 5.P5x4. W3x10 I ,

= 2.4 Ike (Applicant cets .88 liem)  ;

lidditiorni Annunctions

,1. Only Ibble Gaces are concidered in wicle bajy done. (sco the cource I tems referenced in Puble 1), -

i i

13 . Thyroid Dxe  !

. 1

+

Ac et.c..in..t.3_on.s t

1. Off can Octivity ot' dodine correcpunJn to an lod $no concentratJon in th; primey coolant, which in' turn correspondo to an off clAn activity of .27 C1/uca for lioble cacea ,

nfter 30 mln. delny).  ;

J

2. A cicanup cystcra Offect.1vemsc of .23 V is anctw J bre:1 on natually neemd valu:c at Montice.llo (P. enden me. ware:i .072 hr4) . .

.27 Curies / cec for a 1630 IUt plant represents

.815%"failedfuell P

. i i

t 4

t

}

1 Prom previous work .711 Curies /sec =. -

X Curjes/sec l _

3500ist 1630 X = .331 curies /sec-for 1% failed fuel -

. 270 .

. 331

= 81 5  ;

. .-- .815% failed fuel ,

m--e,, , . .-,%..__._... ._,m.m,,,,,,_

, _r_.,.,.,.,.,,m.,,_.,_g,.,,,,_.,-, ym m m..,,, ,y...%.,-_y,__wy__.y.m,c....,,__,...-.m., , _ _ . , ,

1, 8

Tne activity for 3cotopo J at cattration in the coolant in given by:

^(d) A-- ( .86'.c.1012v) (p) cc s A3 01 9 For I-131:

1; = 2x10~ cce ~1 (eN:pe rate cociTieicut) c) ' .23 hr~3

= 6 3h10~U-m- ~3 ( 1

• age c-'ates effect iveneca) t = Jg -I ec[ .

1* = 1Q3 11. L Yg = .0291 _

V a 4.l:J10 cc (n, + '.ea fra Dec: den 631- ).

v = .005).5 ucc = .233 uc/cc (1/ontjce130 retc .22) . ,

A(cc)

Clarent A ( pc/cc)

I 131 .233 I 132 .141 I 233

.475 I 134 .142 1 135 346 For condenser in leakaz;e of 28 SOFA ,

=-A(yc)*2.832x10 cc x 28 ft3 ,, g x 1

pc- 0 80 cc iT3 min EU~sec 17 DF = Distribution Factor N

!bnticello measured 10 -3x10 for a DF i -p For the accident analysis DF has been chosen to be 10 .

J

1 r

1 i

1 .

i j Actjvity du the Off-tac (ue/wa) = A

• 13'.M Off-Dan after P11ter  :

l A Off-Gas (pe/ rec) -(pe/cre) l

! I 131 .233 300 30.8 l t 1 I 132 .141 106 16.0 1 1 133 .479 628 61.8 .

~ '

i I .134 .142 188 12.6 1

1 i I 139 346 457 43.4 1 .

3 i

! The Off-Car chr em;) F D te* c.re Lne- a t o be 903 Treetive.  ;

j ('redit it tato D 30 tan. : hy, fill!ng I inu ud Ar.y t .bu.

1 No crcUr 30 teen for p1w :'ut in the ind:c :or in the nnsocinted

' i j p$pind. ,

t 5 3 $C1 ^'

• 9 ~?

I tl bole FxvJy Dore = R.42 x2.1x10 " ica 4, 4 1  ; =

?

.0065 Rem >

, Iodine VTnole Body u Nobic Gas vinole Body See Table 2 of i

i Calculations i

Thyredd DS:u (See 'hble 2 for derivation of cource ter:n)'. -

Dare a Satu'ae (Rens) (Va)' B

$ C -3 -4 m

=

3.P5x10 'x2.1x10 x3 47x10 ,

i i = 2.4 Henu e

1 4

L i

e 5 a

k 2

i i '-:  ;

. _ . ~ _ -._ ,.,. ,_.-..__,,...,_c_,. ._,._ _ , _ , _ . _ - . , _ _ _ _ . _ , _ . . . . . . . , . . , ~ . . .

_ - _.. - - - _ _ _ - _ _ _ - - _ - . . _ _ = . .__ .. . . _ _ . . . _ _ - - ._ . -._-

(*

I 'iv.w l. ? - Y,:(D a o p r cW;p!!Jr10::::

7 FJ ls .F.t n' A(cec ~) Coo]:ait Off Can l'i oft-Gan off-Dan Art ei. Curla pc/cc pc/cuc. 3(tn decay After Delay F1.lt,.pe/ cec in Ow: 'e

., I 131 1 (-6) .233 308 1 303 30.8 1 32 i I 132 8.37(-5) .141 186 .860 160 16.0 .69 I 1 333 9 05(-6) .475 628 .934 618 61.8 2.64 1 134 2.2(-4) .14:' 38R .673 326 12.6 54 .

I 13S 2.87(-S) 346 H 950 434 43.4 1.87 i

a EUGG;;r f, )n p f) Fill g p p p 3ng, p (3np ,

I ly ' 979 . E '. .la? .f 4 ? .00 4.% ' h.491 l 1 10.' .269 .0_, .001. 0 0 3 .0:ll .270 ,

.202 2. 6;'4 2.169 1153 .G24 . 6'/1 . !. 50 3 0.'

1 334 . 3 0',) .000 0 0 0 1. 00') .105

.I 3 3 5 .073 .2G .00 4 .D? h . 0'J7 1.1% .639 i

5 i EU2G' C E C ni Tscuk $ W *

$ "3 3 $ 3 1 131 1.32 4.493 518 3 07 1.4B(6) 1.95(6)

I 132 .69 .276 2.84 54 5 3(4) .04(6) 1 133 2.64 2.162 1.09 6.25 3 95(5) 1.02(6)

I 134 54 .105 2.h9 .14 2 54(4) .01 1 135 1.87 .639 2.08 2.48 1.23(5) .23(6) l 12.48 3 25(6) r I

t 1

._. .- . .- . _ . _ _ - , , _ . . . . . . , . , - _ . _ . _ - . . . .. . .