ML20207K506

Issue a to Effect of Intentional Depressurization on Cooldown from 39% Power Using One Reheater Module (1-1/2 H Delay)

ML20207K506
Person / Time
Site:	Fort Saint Vrain
Issue date:	12/22/1986
From:	Richards M GENERAL ATOMICS (FORMERLY GA TECHNOLOGIES, INC./GENER
To:
Shared Package
ML20207K390	List: ML20207K386 ML20207K416 ML20207K441 ML20207K446 ML20207K501 ML20207K506 ML20207K512
References
909217, 909217-IA, TAC-63576, NUDOCS 8701090436
Download: ML20207K506 (32)

Text

.

CP,T Roll 2122 (N/C & A) e OA 1486 (REV.10/92)

GA Technologies inc, 6

ISSUE

SUMMARY

TITLE EFFECT OF INTENTIONAL DEPRESSURIZATION ON O R&D 2 APPROVAL LEVEL C00LDOWN FROM 39% POWER USING 1 REHEATER ODV&S MODULE (1-1/2 HOUR DELAY) O DESIGN DISCIPLINE SYSTEM 00C. TYPE PROJECT ISSUE N0/LTR. I l0OCUMENT NO. '

I 01 CFL 1900 3 909217 A I

QUALITY ASSURANCE LEVEL SAFETY CLASSIFICATION SEISMIC CATEGORY ELECTRICAL CLASSIFICATION I FSV-I FSV-I N/A g PREP ^"

APPROVAL ISSUE ISSUE DATE hg BY ENGINEERING

{

FUNDING PROJECT APPLICABLE PROJECT DESCRIPTION /

CWBS NO.

1 IN/C DEC 0 3 gg:1.B .Richarc s W DMY G.P. Conners Initial Release 9 g4./J - dg. . , up

/

, 2970106 A 1 enoy ~

A J. Kennedy ( 757)

(

9'A a.4/d y DEC 2 2 '986 M.B. Richards Release Basis CN - 005653 2970106 CONTINUE ON GA FORM 1485-1 NEXT INDENTU RED Issue Su= mary = DOCUMENTS 1 3 HOT

• MODULE Comp. Runs = 90 Text 2-6 = 5 (30 pages)

Calc. Review Report ST1582 909113

= 3 ST1483 (30 pages)

Appendix A = 21 ( Pages)

Appendix B = ST1673 2

3 RECA Computer Runs = 764 TOTAL = 885 S!0787 (254 pages)

ST3535 (255 pages) 8701070436 861230 ST8750 (255 pages) PDR ADOCK 05000267 F pop i'

( Cmputer output not distributed)

REV SH REV SH 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 REV SH 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 PAGE 1 0F885

, 909217-A CONTENTS

1.

SUMMARY

.................................................. 3

2. INTRODUCTION ............................................ 3 3 ANALYSIS ................................................ 4 4

RESULTS AND CONCLUSIONS .................................. 5

5. REFERENCES .............................................. 6

6. CALCULATION REVIEW REPORT ................................ 7 APPENDIX A. RECA and HOT

• MODULE Results . . . . . . . . . . . . . . . . . . . . . A-1 APPENDIX B. Storage of Computer Analysis .................... B-1 TABLES

1. Summary of results ....................................... 5 FIGURES A-1 Results for no depressurization ......................... A-2 A-2 Results for 700 s of depressurization ................... A-7 A-3 Results for 1200 s of depressurization .................. A-12 A-4 Results for 1800 s of depressuri zation . . . . . . . . . . . . . . . . . . A-17 Page 2

909217-A

1.

SUMMARY

The effect of an intentional depressurization through the helium purification system (HPS) during a plant cooldown using firewater through one reheater bundle from an operating power level of 395 (355 feedwater flow) was studied using the RECA and HOT

• MODULE codes. Forced cooling was assumed to be unavailable for the initial 1-1/2 h of the transient, which is consistent with the Ref. 1 study. The intentional depressurization is simulated at I h into the transient to initially lower the primary pressure such that the PCRV relief valve setpoints are not exceeded later in the transient when forced cooling is restored.

Depressurization times of 700, 1200, and 1800 s were considered in this study.

Results show that depressurizing for 700 s will. keep the peak primary pressure about 20 psi below the relief valve setpoint of 832 psia assumed in the Ref. 1 study and depressurizing for 1800 s will keep the peak primary pressure about 100 psi below this setpoint.

Relief can be initiated as low as 804 psig due to rupture disk limits being exceeded. The loss in helium inventory from intentional depressurization lowers the heat removal capability which results in somewhat higher core region exit temperatures. The maximum economizer tube temperature varies from 1312*F for no intentional depressurization to 1323*F for 1800 s-of depressurization, which is still below the 1350*F limit determined from stress analysis (Ref. 3) on the economizer tube bundle.

2. INTRODUCTION The Ref. 1 study considered a plant cooldown using firewater through one reheater bundle after a 1-1/2 h interruption of forced cooling. A single flooded reheater was used for cooldown with the'five remaining reheaters and the six EES bundles assumed to be empty. The other loop was assumed to be unavailable (isolated). The Ref. I study considered Page 3

l

. 909217-A l l

1 operating power levels of 28.6%, 39.25, and 54.15. Power levels below approximately 40% yielded economizer tube temperatures below the maximum allowed value of 1350'F. Specifically, for the 39.2% power case the maximum economizer tube temperature was 1312'F. However, the primary coolant pressure reached a maximum of 832 psia for that case, which results in an opening of the PCRV relief valve and a venting of about 10% of the primary coolant inventory.

The purpose of this study was to consider an intentional, operator controlled depressurization through the HPS for a sufficient period of time (within the 1-1/2 h delay) such that the primary coolant pressure remains below the PCRV relief valve set point for all times later in the transient when forced cooling is restored.

3 ANALYSIS The RECA code was used to determine the core region exit temperatures and flow rates. The HOT

• MODULE code, described in Appendix B of Ref. 1, was then used to determine the temperature distribution among the six operating steam generator modules. As discussed in Ref. 1, the gas entering a given module is well mixed by the time it reaches the economizer tube bundle. The hot module temperature can thus be used as an estimate for the maximum economizer tube temperature.

The RECA runstream for the Ref. 1 39.2% power case was modified to allow for an intentional depressurization through the HPS during the 1-1/2 h delay period before forced cooling is restored. Data for fractional inventory remaining as a function of depressurization time was derived from the Ref. 2 RATSAM analysis and incorporated into the RECA AVGFLO subroutine. For this analysis the depressurization was assumed to start at 1 h and depressurization times of 700, 1200, and 1800 s were considered.

l l

, Paga 4

i l

909217-A 4 RESULTS AND CONCLUSIONS The sequence of events and operating conditions used for this analysis was the same as that fc' the Ref.1 study except that an intentional, operator controlled depressurization through the HPS was simulated for depressurization times of 700, 1200, and 1800 s beginning at 1 h into the 1-1/2 h delay prior to return of forced cooling. The RECA and HOT

• MODULE transient plots are shown in Appendix A. Results are summarized in Table 1.

TABLE 1

SUMMARY

OF RESULTS Intentional  % Primary Pressure at end of Peak Peak Depressurization Inventory Depressurization, Pressure Economizer Time, seconds Released psia psia Tube Temp. 'F 0 to ---

832 1312 700 4.8 571 813 1314 1200 9 35 347 771 1318 1800 14.5 519 732 1323 As seen from the above results, the loss in inventory from an intentional depressurization prior to restoration of forced cooling prevents the PCRV relief valve from opening but also lowers the initial heat removal capability somewhat, which in turn results in slightly higher peak economizer tube temperatures. However even for 1800 s of depressurization the peak tube temperature is below the 1350*F limit determined from stress analysis calculations for the 39.25 power level considered in this study.

The start time for depressurization was arbitrarily selected at a point in time during the 1-1/2 h delay (1 h) for this analysis so that available data from Ref. 2 for inventory lost as a function of time would be applicable. If more time is needed to provide cooling water for HPS components, then intentional depressurization initiated at a point in time after forced cooling has been restored but before the l

Page 5

909217-A l

1 primary pressure has peaked could also be effective in preventing 1

relief, provided there is sufficient time during this period to remove j enough helium. For a given amount of helium removed, the depressuriza-tion time will decrease as the primary pressure increases. The heat removal will be somewhat better for intentional depressurization during the forced cooling period since more helium is available for a longer period of time.

5. REFERENCES

1. Potter, R. C, " Firewater Cooldown Using One Reheater Module (1-1/2 Hour Delay)," CFL 909113- 6 , ocu d e .7.L 1986.

2. Silady, F. A. to W. H. Clarke, " Technical Memo of FSV LTA Analyses for Two-Stage Depressurizatibn After LOFC of an Equilibrium Core,"

SAM:255:FAS:77, October 13, 1977.

3 Nichols, M., "FSV Calculations for Circulator Temperature-Related Operating Limits," CFL 908861-N/C, November 13, 1986.

1 Page 6

GA1563mEV.11/80) 4 0 y 2. / "f - A ,

CALCULATION REVIE1N REPORT TITLE: Eppge7 of: jgw y7 o af A f, pepps sy o af g/477sv APPROVAL LEVEL _2r._

dA/ COOL. DO Al Al Fgo nt a b u t K r o - % us c At J 4 */. [#82A.

a uuJ 1 MS/ AJ K / A'E 4fAh QAL LEVEL I DISCIPLINE SYSTEM 00C TYP( PROJECT 00CUMENT NO. ISSUE N0s LTR.

L 01 cFL 1900 9 0 Sal l Ul C INDEPENDENT REVIEWER:

NAME di* C# M b ORGANIZATION d' *di REVIEWER SELECTION APPROVAL: BR MGR DATE /#' N A . S t+e u o'Y REVIEW METHOD: YES NO ERROR DETECTED t

ARITHMETIC CHECK X LOGIC CHECK N ALTERNATE METHOD USED 5 SPOT CHECK PERFORMED I I" COMPUTER PROGRAM USED A NEM Ar f isk V %e Afr t.i /

REMARKS: (ATTACH LIST OF 00CUMENTS USE0 IN REVIEW)

J, ,peju.ssact:.tirber a time us inis,,irt efric ted 0:m E ' .2.(%e t 171.nc ..aa 2~' ;..n'>

/afer.) 77' esc' da se:; are iiO, fi dy ./d('rn.surorhn < v* 5's li'*',a sil?-: -

[*

St.trtisj a f %* C Suetsk dis e, fr e u . r~ ik hof aI5tr Wl2f'*>^'"'"'l be a h ir v es .crq a s,1) .upsid .w i,,, J n.w .it m/ .,~ dep o s u" ' : '*]' ' ^ '

O N a. Minor ~)'erturkh r?, Jc eur'helfa / di/">'m > -

A. Bc;.ui.,,ng HPs in.~ps%n L Erc % ha :< s .r. c' c':s twiri ; c'y d

4*'**

3pc,a/J kas t' .4 trin'tM! t + tc-ci".;n A/H

\

l l

CALCULATIONS FOUND TO BE VAll0 AND CONCLUSIONS TO BE CORRECT:

O' INDEPENDENT REVIEWER 2 '/ ./[-INabuS/d < - DATE /'/?Nd

./ SIGNATURE ' '

Page 7

GA1543(REU.11/80)

CALCULATION REVIEW REPORT TITLE: EF(cr o s xd rsar tod,4 L BE*85m&f-& rod M coo'# " d APPROVAL LEVEL J Mon as Y. saaex usrso i tene trex ,Mosure

( s '/4 #ou,< etc4r) QAL LEVEL I ,

DISCIPLINE SYSTEM 00 C. TYPE PROJECT 00CUMENT NO. ISSUE N0/LTR.

2 $O N A $I l oi C F L., / 1 00 k l

INDEPENDENT REVIEWER:

NAME #- "G ORGANIZATION 45/W EM"W #M REVIEWER SELECTION APPROVAL: BR MGR b - DATE A 'I 'f*'

4. S he m y /)

REVIEW METHOD: YES NO ERROR DETECTED X

ARITHMETIC CHECK LOGIC CHECK de ALTERNATE METHOD USED X

SPOT CHECK PERFORMED T

COMPUTER PROGRAM USED X huhm ekk V s-u & br/w REMARKS: (ATTACH LIST OF DOCUMENTS USED IN REVIEW) y o,'a d g h y 7 Q ye p t

}\lt. k Thib revoE4 tb fsf<rr~ek h N !"l- N cadL}w& w&swA % L. Ed ava e sn . n,'<n .

fc@h visa-t. s s- M C & fu. ..

l l

l l

CALCULATIONS FOUNO TO BE '/All0 AND CONCLUSIONS TO BE CORRECT:

INDEPENDENT REVIEWER DATE e O w uRe y , , , , 1

909217-A APPENDIX A RECA AND HOT

• MODULE RESULTS i

l Page A-1

e l 909217-A Fig. A-1. Results for No Depressurization Sheet 1 of 5 mun.st34ss  :,esees sateessa naca asa ru rtou m cootape no stretss.

9 TEMPERATURES 2000

- TINPOS

$ 8 ,..... ,

TINFOS - Core Inlet Temperature ATOUTF = Average Cor. Outlet Temperature gyggyp 1500 - TAVOTF - Averese 5.G. Inlet Temperature _ ,,,,,,g.,,,,,

- m - ><-= Core Temperature E

D

s TAUOTF

- -4.-

o 7 ...,,,

R y X--X U "

M Z D ,--- - . . . . - - - - TMAX 1000 #

E -

~,,-__ . _.u --

' ~

S -

F $ OOO see 0I -,

0' 2 4 6 8 19 TIME, HOURS Page A-2

4 909217-A Fig. A-1. Results for No Depressurization Sheet 2 of 5 IBUM*Sf 3469 t t/99eM 18ee6113 IIILCA 354 FW FLW llM C00 LIMO MO MPMSS.

HEAT GENERATI0H AND REMOUAL RATES 60 =

SUMQ O

HEATR 40 - - - X --

M E .

mm - rocal c r H. e c.a.cated, w G HEATR - Total Cor. Heat Removed. W A h U 20 - r A , , $.

T T l\\

S s

3 ...'X--.... 7_....# ,

y. . .. y.. . ._ ,,._.._,y,,,_,

-20 , , , , ,

0' E 4 6 8 10

TIME, HOURS Page A-3

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

909217-A I

Fig. A-1. Results for No Depressurization Sheet 3 of 5 1

m smes si,es,se is,,,,,3 ,ge,3,, ,, ,g,, ,, ,,,L,,, ,, ,t,,$s.

PRIMARY SYSTEN PRESSURE 900 PHPSI

- m.

800-P '

S 700-N 5  : u- -

4 600- - ,

! se0 I , , . ,

8' 2 4 6 8 10 TINE, HOURS 4

l l

I l

l i

Page A-4

l 909217-A 4

Fig. A-1. Results for No Depressurization Sheet 4 of 5' i

r l

• stues : <es.se saiesen weg mo re rtov = coeu e o span.

i CIRCULATOR HELIUM FLOW RATE 49 y( _ m

~

m ,,

FLOHTX i f O

! 39 -

~

L B

i S -

/ 29

) 9

( E -

, C .

19 -

s .

9 CO,O , ,

9' 2 4 6 8 19

, TIME, HOURS i

)

i i

i Page A-5

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

909217-A 1

Fig. A-1. Results for No Depressurizaticn Sheet 5 of 5 1

l

)

4

.I i 8.8. latt? tres. ass ru rLov ** coouns - untu e.o espeess.

! Legend I

. Hot Module 1300 ' ' -- -

+

8 . Avg Module a . .

p -

e r '

a 1200 -

L -

l '.

u r

U. '.

e . .

1100 i '.

D 5 .

e -  ;

g -

F 1000 A

1 .

W 900 '

i , ,

] ,

' E 4 6 8 10 ta i Time, Hours i

l Page A-6 l

909217-A Fig. A-2. Results fo." 700 s of Depressurization Sheet 1 of 5 l

PUM*910?17 llells94 00:34:34 atCA 354 rit FLOW IM toot!Ne 7te SEC ptPetSS.

TEMPERATURES 2000-TINPOS

.' TINFOS - Core Inlet Temperature O pa U.....N,

' ATotTIF - Averese Core Outlet Temperature ATOUTP

~ ,

TAvorF - Averese s.c. .talet Temperature - - X ---

1500 - ', THAt - Max w Core Temperature TAVOTF

's

• ~

D . '''''''

E

N'#  %

G 'W,'E'-D- TNAX W -XX- S R  : , - -~ W = A'::t = - . . , .

.e ---.

1000 - _

E , , "

C E -

S .

F $ OOO 500 -

i 0j . , , ,

0' 2 '4 6 8 10 TIME, HOURS j

l Page A-7

. 909217-A Fig. A-2. Results for 700 s of Depressurization Sheet 2 of 5 see.stete7 tisteres tes34 34 sten see FW FLOW RM C00 LIMO Tee SEC MPRESS.

I HEAT GENERATION AND REMOVAL. RATES 60 SUMQ O

HEATR y.

4g N strito - Total core n.ac cen.cated, w E ,

HEATR - Total Core Heat Removed, W 0

' A ,g W 20 --  :

A ' X.t-

\

T *

\

T S o, a'~.X---- 3 .. ..y . . . .. , . .y.._..,..__..y___

g=.gy Y' i i . . . .

6 8 10 0' 2 4 TIME, HOURS I

Page A-8 wm.

909217-A Fig. A-2. Results for 700 s of Depressurization Sheet 3 of 5

?

EH.S19787 11/18/06 e3:34:34 R(CA 254 FU FLOU RM C00Lif90 700 SEC CEPetSS.

t i CIRCULATOR HELIUM FLOU RATE 40

- - - FLOHTX

_ _-c - - '

g f

30 -

( _

B S

/ 20 -

S -

E -

C -

10-0- % 0. O > > ' '

0' 2 4 6 8 10 TIME, HOURS Page A-9

909217-A Fig. A-2. Results for 700 s of Depressurization Sheet 4 of 5 nun.steter tiensies eensassa aca ssa rv stou nu coot:He too uc uruss.

PRIMARY SYSTEM PRESSURE 900 PHPSI

~

A 800 I

p

% w -.

S 700-I -

A -

600 500 . . . . .

' 6 8 10 0 2 4 TIME, HOURS i

I Page A-10 l 1

l 1- -

909217-A i

Fig. A-2. Results for 700 e of Depressurization l Sheet 5 of 5 '

i i

?

i s.s. Inst tanes. ass ru rtou . me cootins . uttu too set osmss.  ;

f400 Legend i

- I

- Hot Module ,

7 1300 ^ Avs Module j

=

(

i C ~

r a 1200 ,' .

t .

u j

• r  : ' .. ,

e -

1100 D - .

e -

g - * .., ...

A '

1000 F -

ggg i i e i e 0 2 4 6 8 10 12 Time, Hours Page A-11

, 909217-A Fig. A-3 Results for 1200 s of Depressurization Sheet 1 of 5 espe.stign ::.se es es:Hele sten 355 Fw rtou me toottne teos ste MPMSS.

e TEMPERATURES 2000 -

TINPOS

~

.q "

~

[,,g. ' TINFOS - Core talet Temperature

~

' ATOUTF - Average Core Outlet Temperature giggyp TAY0TF - Average S.C. Inlet Temperature _ ,,,,,,g.,,,,,,

1500- ,

\ N - ""*"'s Core Temperature

~

TAVOTF D

E

-  % _ . _ 4. . .

7 g .

4 --X. g *' . Y,,, I * ' U -- - ...,.

TNAX R

1999-yX- X Il ,

C 1--- ..

- ~ ~ - -

' - --- o---.

E '

E -

S -

F $ 00 O see- -

i 9- , , . . .

0' 2 4 6 8 19 TIME, HOURS Page A-12

9092f7-A Fig. A-3. Results for 1200 s of Depressurization Sheet 2 of 5 i

sun.etww stessess esseeste Mca Nt PW FLOW SM C00tlHS late 9tt DEPMSS.

HEAT GENERATION AND REMOVAL RATES 69 --

SUNQ

. O l

HEATR 4, _ .X -

l N

E ..

smig - totet Core u.at c.n. rat.4, w MEATR - Total Core Heat Removed, W 89 -

U A , ,  ;'g\

T \

T k ...~y*~---

$ %n .

- a ,...--..v.........,.......y......,r. . _ y..

(

q_ -g .u - _,

t i

1 9' 2 4 6 8 19 TIME, HOURS ,

i Page A-13

, 909317-A Fig. A-3 Results for 1200 s of Depressurization Sheet 3 of 5 sL90.gtNN listeits teeMelt Atte M4 fW Plow see teettMe teet MC Mpette.

CIRCULATOR HELIUM FLOW RATE 40

• FLOHTX n n . .

. *

• y Vy

/

39- -

~

L, ..

~

5

/ 20 =

S 1 E -

C -

l .

19

= = ^ ^

j 0-9 e 2 4 6 8 it TIME, HOURS 1

l l

i Page A-11 t

4 1

~

909217-A ]

2 Fig. A-3 Results for 1200 s of Depressurization Sheet 4 of 5 suee stan ti,isen esiseine a ca ni av rtou m con m : = ne u m n. .

PRIMARY SYSTEM PRESSURE 809-PHPSI

~

i

N A 799- g P -

S .

I

. - A .

600 -+

S00- . . .

2 4 6 8 19 9'

TINE, HOURS Page A-15

909217-A Fig. A-3 Results for 1200 s of Depressurization Sheet 5 of 5 J

1 s.o. tutet tems ase rv atou au cootter. - vitu saes sse espotss.

Legend T 0 Hot Module e 1300 .

• A'vg"M"od"u l"e P . .,

e .f ,

r '

a 1200 '

L -

u -

0 '.'.

r e

l*

1100 '

~

D .

e -

g 1000

F .

A 4

l i

900 - '

i , ,

9 2 4 6 8 10 12 I . Time, Hours l

l i

1, 1

l I

l 1

Page A-16

. 909217-A Fig. A-4 Results for 1800 s of Depressurization Sheet 1 of 5 i

PUN.$tgiS9 33/37,33 33880889 MCA 355 FW Ft0W AM C00LjNG 1990 SEC MPet!S.

TEMPERATURES 2000 TINPOS 9

-f..e..

. TINF0S - Core Inlet Temperature O ATOUTF - Average Core Outlet Temperature

,,' ATOUTP 1500 - , TAVOTT - Average S.C. Inlet Temperature _

D

- ' nsAt - u==4-= core Temperature , , , , , ,,_

E u , 7AVOTF G

7 a -

R y X-Xh ,

Y-E'* -

2)p.:g- ,-g . .

TMAX S

.- -l F c=cc 500 -

9 - i i

0' 2 4 6 8 10 TIME, HOURS 1

Page A-17

- 909217-A Fig. A-4. Results for 1800 s of Depressurization Sheet 2 of 5 IRM.9ft?Se Stel?/06 18129899 #tCA 354 Fu FLOW Rs4 C00 Lites 1000 SEC MPetSt.

HEAT GENERATI0H AND REMOVAL RATES 60 SUMQ m

- v HEATR 40 - - X-- --

N sum - Teest core u. e cen. raced, m E _

G REATR - Total Core Heat Removed, W A ,

W 20 A

~

, h s

S F0 3 ..M ----

g - - - -- x . . .. . . .,__.__...y......,_.._,y,,_,,,_,

_. u .v - - ;

0 __ MV4 0' 2 4 6 8 10 TIME, HOURS i

l l

l l

l l

Page A-18

. . l

- 909217-A Fig. A-4. Results for 1800 s of Depressurization Sheet 3 of 5 SUM *$f8790 ll/87eM 18880889 9tte Me PJ FLOW 1I84 C00LIPet 1800 SCC MParggg, i

CIRCULATOR HELIUM FLOW RATE 40 FLOHTX C C t C A

~

f 30 -

L -

B S

/ 20 -

S -

E -

C -

10 -

0-- --,m , , , ,

e' 2 4 6 8 10 TIME, HOURS ,

1 Page A-19

a. .

~

. 909217-A Fig. A-4. Results for 1800 s of Depressurization Sheet 4 of 5

,we.stene  :, sues seiaein uca 35 Su 'Lov m cootim isu sac unuss.

PRIMARY SYSTEM PRESSURE 800--

. PHPSI O

I W -

vee-P L 1 g --

I A -

600 --

See- i i i * '

' 10 g 2 4 6 8  :

TIME, HOURS .

Page A-20

909217-A i Fig. A-4. Results for 1800 e of Depressurization Sheet 5 of 5 i

s.e. Inutt tenps ses rv rtov . au cootino - witu tsee uc paretss.

1400 Legend

~ Hot Module T

, 1300 1% -- -- - ---

Avg Module

~ f m -

T p .

/

e

• r a

1200 u ll r  : .,

e - '

1100 '

j o . .

. .4. . .

i e .

l. '* ..,

g 1000

.. A F -

900 ' ' i i i 0 2 4 6 8 le 12 Time, Hours l

Page A-21

909217-A APPENDIX B STORAGE OF COMPUTER ANALYSIS l

I 1

i 1

)

Page B-1

909217-A APPENDIX B STORAGE OF COMPUTER ANALYSIS The results presented in Appendix B were generated with the RECA and HOT

• MODULE codes. These codes and the runstreams are stored in archive file SYSD4040. The computer runs was made for this study are identified as follows:

Depressurization Time RECA HOT

• MODULE 700 s ST0787 ST1582 1200 s ST3535 ST1483 1800 s ST8750 ST1673

(

Page B-2

,y,- . ._ g .J s . ...w -. - --- - - - - - - - - - - - - - - - - - - - - - ' - - - -

6 J

s 1

ATTACHMENT 11 4

h