ML19241C107

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March/Corral Analysis of Hypothetical Meltdown Scenarios for Contingency Planning
ML19241C107
Person / Time
Site: Crane Constellation icon.png
Issue date: 05/22/1979
From: Cybulskis P, Kurth R, Wooton R
Battelle Memorial Institute, COLUMBUS LABORATORIES
To:
Shared Package
ML19241C105 List:
References
ZAR-790522, NUDOCS 7907260716
Download: ML19241C107 (7)


Text

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al.a 1 c. f,

.at

.ait'71.

idi-

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Le l a t.> r 3ts of. r. a l;. fs alco EiCnG.

Ts.ble 1 ' m.c s the principal th.es of int =r<

it for i t i a n s c.- erics

  • art ng at 3 da's :nd 7 dy s.

It was :ss:

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~o r.ae, Nil,cas tht t' e

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,.0 m.,utes t o su ce r il hours could 'oe M3ed to the ti.e for *.e5.ning of ulting de; c ading ytions re3_at:n3 to r.,et=al

. rati icat2on in t.oe

sse,.

.in t,ae calcu-en >-

,ition 02 cccay,acat an.inite irrau:3tica time was ascu eu,;

t..ats teaus to c.

3

':atract

.ac s_ o i,t o g c t i me,a y a p p r o:..mtety so,,.. anu c0 at g cays anc 7 cays, 4

3 -

i 3

r.=.pecti;0 y.

iae per:cd or core ne,t,n

s
s onsitise to

.2 cay anat 3

I cm-of the relatively la:ge cont:ibutien of 2tal-cater. e act ion to care heatup.

The r.: dial cad axial re.;er di<-tributions.ced in these analyses were

.nore pen ed than the T'iI specific ealues for the actual burnup e:..perienced.

Eh m uently, on i.pril 7, 3attelle was requested to perfora eight "J.RCH ca.,1yses to aid the '.RC ntaff at T'irae file Is1c ad in centinency a

p i c2..a i n g.

U.e cases run lu201ced 1cus of cooling ind.=tcup ater to the sael it 14 7.y s iad 2]

',js folicw a.'

s.,u t down.

But ;ariat -ens in centni r'at a

. "; > 30

.el-rs>

(2)

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i

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'.S e cont i -:nt pce:nuces m

-n in T.ib l e 2 do not i.c ? ud e ' ae t ects o

of hadro::n Lurnina.

If the h.dco^ca bur.s as it is elcased frca the 'r.;r,v s

a a

a a

r 5 ;. " t a, the rates of s c e r.E,y

'1 p u t into the c o n t a ir T a n t at:';;paere sre rels-tlw ?ly low and t';e

?ffect c n t'a e contai ent p r c c c u r ce

.S rinor.

If, on the o t,n e.- ' int, t,ne dyorogen accumulates above i l a;.

C a l e 1.1 'l t s.ce. ore 13nition 4

y c

g nd then burns rapidly, Significant prPscure increa3c:s ( an result.

'"h e rast crit.~ cal time of potential hvdrcran burni r 3,41: 1rs to b > the ti::e o f re actor a

a c

cor tae. ice) cent ca n as cc

.s' c

. 2 : e,1

a l,. a re.

1

.anc ;ere t,a e e c.~: l t i : n o.

the centair., int atrasphere at this tire is 'irely in the ?le. cable range.

Burning of the hydrogen dern to the fic. ability liait '.could produce a small a sinnifi-a,r m ore in c re a se >- canplete reaction of the h,vdro-en 1culd lead to a

ant pr., are rise.

.na.co r s t ccasination or.a,v a re. e n c e f...arration c c c.4,,ete t.

1 a

m 0actien) t gather :ith at ca, p roductica trom the que,ching of the (.o re i eb ris euld Icad to the pce.iict.en of cont 2 ont fiilure.

,,- n ii 3 a m J N;${'{

r-lI yhhhh hY[.)%hb i

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  • 3 27

.d core cit M.1 33

f. '. 4 32 re.3 f.11 o r e 25.2 46
f. 4. 5

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0 47.6 174 0

0 10 bri;i rit

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0 '.r em e t. t e At

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0 be c:

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0 47.6 17 123 0

0 10 h r i nc:cre : It

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19 57.6 17

.-.9 0.3 16 20 hr <c:cr

- relt 59.5 20

20 42 51 57.6 70 219 38

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i.8 15 3 ;re nit 25.1 73 t'.4 21

~c d '.iltre M.2 20 4.5 29

- M.s e t s e nch 75.3

'. 9

'. 4. 6 47 Ic;'n car.cre e c -I t 33.5 13 115 0

0 47.6 28 110 0

0 10 hr cc.. crete it 48.5 IS 102 2

19 57.6 IS 97 0.3 16 20 he cene ri:e - alt

$8.5 21 107 40 51 67.6 20 102 35 46 cc,t.in c,t c.e:pr uure

' c r.e une fc!!ure

=.=...-- =c

=..:.---_---- :--~--=:-==_-_==.--:-=-:-.-.- - - _ = _ _._

- =

es I,itfal a d!?'-.,s prit.n y full cf cO' T'.n cr at.~23 psta; c u mb r/

? _. M t o '.- e d ry.

! - de.

.rd

.cr.:e,ener a:fon, cm.

'2 < r_!ial e-c t e ; " n.- t r a '. n, cm.

  1. p- } en ~ C 0

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N[t a.

  • i C 3
  • - k. 5 7 -

u#

- ' I '. T ; # : n f T c. * "L'7 C '1, s o n.

c o rs 0 ir5 Arme

, < <; ).

S.

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J19095 9

g

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j..

- t L s' :) ' i h.

c; m

uj 5

4

'Ili e nItdtwn t:a: : Tent s t. i r t ". n g a t 14 41ys aft..

'.ut dewn i t h no cont ain: ynt pra ; or ecolers will be u

! es a pccific e pie of the

,atuntial eff.: cts of hydrogen.

!n this came :Le cont ain -'nt pr.

sure i: ne-diately followine vecual failure is 45.naia-linited :.'.e d r o : en turnine, muld a

r.iise this to 73 paia.

S t._ c < w at: : n

',e to daris y chi. ; by

e ater o

in the re icto r c..vi ty could rai.e t he p ri-ore :. 0 /6 puf i; l'at d I.,iro f n

  • m r n i n o, at t'i i s t i: e wauld r: : ;e t '.e..t< > ;u re to 33 p-ia.

r[ tne dati.,.wtion is am :ed t o r, cult in cerplete

.y ' c e,y n 3ct

^n ~5e c c. n t a i :

't c' uru

.l' 4 t.rly

'oll",

.;c, e1 ' ti'- ce wmuld ;o 7<

'.5 to i 3 , : i 1.

'n iLe l

's

.) !s*f

.;, )['s

[.

  • (

, ~ * ~

e[

, s 't

,}

e id

){

Ck 0 1

)

  • y g s

x

~* <

e

..n of 157 ;;ia : :s L.

n calcul,: -d.

For r..'o.

ace, t l.e

- inal ecn-t it f a ilure p res t ':re is ta-;en to be 135 psia.

for I.

  • ll" P l. I C ;; s ile CJ es :n.' I } l C,a C C' il t. t i : r '.(:at

, c '., c a '"

10lil].

le

.J.-

i n of ',oo,-n

's not y ce as.2'reat 3

.,at to.

+

t

.' - r i t,. at ti s _hertly a f ter melt :., n.

is t.,e,; r o c z e.' s,

.r, t 'i e

,e m'

'on of 'yd v n

.a

<he contai-c at will c,ntr ue to r ;a.

Ta

..e

- s e.cc of

.rually a..jdrej a

._m...at.

..aa

id s _

,u wr _ucaIn;,

ed

.,e

,.ot,in;r3tien iruid alt.entrir.r at i, n w i t.a cae.oo.ing c.u.u:t

n

'se.

at cuen t _.c ?s, a c :, arr, t.ne a l r _ o r ce c on c e n t ra t i :s o f t,,ie 2 2 0 a u c,. i a s

_ 'Id be very low and the ce s aqu :nces of the addit., nal rnis ce ;cuid be r e'.it i. cly minor.

Orca the :edelline of concrote m metr 7 tion in 14 CH it is act a

r i

?oc,ible to conclusively

-ta te whether or not the molten co re sill penet rate the hac< at of thn ecntaiacent.

T~l e I '. f E R r o u t i:' e o f : '., R C'i is primarily pli-Ole to

'e initial m lod of c ncrete attack ad ; c

.ot el:ible 'or p r edic t. ng lo ng--t. a behavio r.

Tables 3 :.ad 4 illuctrate the predicted vr.et ra t ion as a f u n c t io n o f t ime f o r two o f t h e

.'.R CH c a s e s.

In addition to the difference in dec]y heat for the two tabi-s, the core cas assumed to be 9 mched (to ibout 500

?) prior to cc tete at tack for the 14  :) case

.ner,as the core eac at app roxina t ely.'i130

/ at the te3 naing of ceacrete i

al'~ ack for the 3 day c.2Se.

1 16L d4soss mJ uW b is i,sg: y u.

.v.u t

5 T/'.LE 3.

co:

r.F rE e.-;aATIc, von ACCID-;f I '; I T I.'. 2. D AT l!RI.- OAYS"

=.....=-:. :.=:___

T. > jlr _ _ _ _ _ _ _.3,_ g ___

_, y.

cq O

O 117 2

3.1 704.4 4

37.9

?:o.1 6

%.2

.4 S

236.1

,3. 8 10 IJ3.9

'0.2 12 135.1

's3.6 14

' S. 6

'co.5 16 157.3

'13.7 gv-n '-

,,.'.r v n 18 1 2.8 713 3

..e e.

" #t~ h 20 1.19.5

' ? ',. O

~

L'7T *?3 C U.1

.-~.._.,

6i, V;,

Te pcreiturc of core at i

<2 n-if.

ning of concrete attsck 2s

- < 1_;, o..

v p.

\\-

T.13LE 4 CO::G E TE F-? -T? ATICN r 0R ACCID.i.:.E IN1 rI ATED AT 50ERTEES DAYS *

?:.

Q_.,,,

: :_. : = - -. : = =. = =

l,. ~. ~.,..

m, hr Z,

c, R,

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s p:n inh o

0 179 25 35.3 237 51

' 3. 3 T73 100 63.7 343

00

'9.4

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? '4. 0

'4.$ 7

-- - ::.2 =

= =.=.==: = = -

Care,ar

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^

to - 25000 F pt-for to c:,c cte art,ck.

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