ML19338C684

Forwards Results of March Calculations.Table Describing Case Runs & Summarizing Containment Pressures Encl

ML19338C684
Person / Time
Site:	Sequoyah
Issue date:	08/12/1980
From:	Wooton R Battelle Memorial Institute, COLUMBUS LABORATORIES
To:	Tinkler C Office of Nuclear Reactor Regulation
References
NUDOCS 8008180449
Download: ML19338C684 (21)

Text

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@Battelle Columbus Laboratories 505 King Avenue Columbus Ohio 43201 Telephone (614) 424-6424 Teies 24-5454 August 12, 1980 Mr. Charles Tinkler Mail Stop 904 U.S. Nuclear Regulatory Commission Washington, D.C. 20555

Dear Mr. Tinkler:

Enclosed are results of MARCH calculations performed for the Sequoyah plant. Table 1 is a description of the cases rua, and a summary or the containment pressures.

Please call me at (614) 424-7522, if you have questions on these results or the modeling assumptions.

Yours very truly, s ,w

' ^

, ,; / , ,

Roger 0. Wooton Nuclear and Flow Systems Section ROW:rde Enclosure cc: Mr. Mark Cunningham 5

50 Years Of Service

//

8 008.180@y -

h 4

TAllt.E 1. SUtttlARY OF RESilLTS l

, . . . ~ . . . _ , _ . . _ _ - - - - . . . - - - - .-- 6 Ignition horn -------**-==-~-----~T"'"-~****~*""""'""'"~~~*

i gio i n t limit Flame Bnru propagation

.C__a se . _.,___.__"  !

" U2 "!" U 2 time, see l ',2 E

PT d sla(1) PNEW, psia (2) PflAX, psp 1 10 0 1 no 23 58 141 3

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no 22 44 j 5 10 122 4 25 no 22 6 44 114 12 0 1 no 24 64 141

/ 12 0 25 no 23 64 8 8 137 0 1 no 22 51 9 8 132 0 25 no 22 51 10 8 127 4 1 4

no 22 36

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} 0 '

1 yes 24 fl0 ICE (4) 41 Ill 10 0 L l no .11 79 1

146

.- - _ ..... , - .. ~ --, . --.- - . ~. - - -- - ,,,. - - . .--.-.a . . - ~ = - . , - - - - , , ,

(1% ' i.erik n.ressure prior to core slump 4

j (2h peak ad shliatic 11 l> urn pressure prior to core slump - '

2

(3) peak containment pressu m after head failure j

(4) ice melt complete at 21 win.

1 I nratt melt = 62 min.

co re s i n.mir ' 93- min.

heail tall = 914 min.

4 ice melt complete = 102 1

4

SUMt RY O F .14 RCH RESULTS

^ ~" ~ ~

S E 0tJ 0 V A H S20 -

1 ICE CONOINSER CCNT A! 6HENT _ _ _e_ _ , _ _ . _e __ _

THE ACCIDEt:T IS A SMALL LOCA _

CONT *INM!NT SP3AY WORKS ECC !YSTEM WORKS

,_Hv DR CGE N . BURNS ARE ACCJJNTED FOR ST ARTING WITH NUPL ACE = 1 _ _e e e .

SWR BWR TIPE PRIrARY .0EBRIS DEORS FRAC. CLAD SUMP SUMP ORYWELL ORYWELL EVE 1T (MIN) P (PSIA) _ _CONTMNT P (PSIA) MASS (LBI TEnP (F) REACTED MASS (LB3 TEMP (F) MASS (LBI TEMP (F)

SPRAY ON 7.!21E-01 1.637E*01 7.771E+G3 2 014E+C2 F t.N ON 1. 0 0 3E + 01 .. _ ...e - _

CosE UNC1VER 4.30AE+01 _1 589E+031.888E*01 _. 1.3 7 7E + 01 STAQT M EL T 6.20 7E

• 01_1 3 94E + 0 3 1.974E*01._ 4.13CE+C3 1 560E-02 . _ _ _ . . - . _ _ _ ...e_.

ECO OFF 6.207E+01 1 399E+03 1.S74E*01 3. 723E + 0 6 1 163E+02

_ _ D9 AY R EO 1PC r_oN 6sr7EEt31 a

1W E?Ci __ _

3.462E*QtL_1,1M EiGt CORE SLU19 9.281E+01 5.853E+D2 1 955E+01 7.557E-01+_ _ _ _ _ _ _ . .7.449E+03 4.753E-01 t FRACTICN CORE MELTED __ _ _ _ .

END OF B3IL 9.1J4E*C1 _ 7.747E+33 2 3 78E

• 01 5.1G6E+G5 4.441E+C3 . 9.983E-01 4. 2 35E + C 6 1 121E+C2 COTTOM t.EAD FAIL . 9.3?5E+C1______e__ e.__ 2 7 72E

• 01 - 5.856E+C5 3.94 2E + 0 3 9.983E-01 4.712E+06 1.139E+02 .

ICE MELT CCPPLE TE 1.015E*02 4.368E*01 5.663E+06 1 154E+02

_ _END HOTQ10P hi 4 8.E + 0 2 1 347E*01 5.857E+c5 2.597E+03 1 30.0 0 g +.Q G 5,_789E+L6 1 19Gg+E2

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