ML20213D975
| ML20213D975 | |
| Person / Time | |
|---|---|
| Site: | Columbia  |
| Issue date: | 01/28/1982 |
| From: | Notafrancesco Office of Nuclear Reactor Regulation |
| To: | Kudrick J Office of Nuclear Reactor Regulation |
| References | |
| CON-WNP-0448, CON-WNP-448 NUDOCS 8202180469 | |
| Download: ML20213D975 (3) | |
Text
_
DCs a
s eid JA:.' 2 0 592 Ec) 3 '? 9 MEMORANDUM FOR: John Kudrick, Containment Systems Branch, DSI FROM:
Allen Notafrancesco, Containment Systems Branch, DSI i
SUBJECT:
WPPSS NUCLEAR PROJECT NO. 2 RESULTS OF THE REACT 0P.
CAVITY SUBCOMPARTHENT ANALYSIS
. - 7 R'ElsREtlCE:
- 1) Letter, fl. O. Strand to A. Giambusso, " Response to
' ' i's.:.
RequestforAdditionalInformatJon,SacrificialShield
@y.
Wall Design," dated August 19,'1975,(G02-75-240/WPPSS e
/.>
'g' Report No. WpPSS-74-2-R2-8) m,. J,.
2c.m"C*ib
- 2) *etter, G. D. Bouchey to A. Schwencer, " Response to L. ;
(cd 1
, e*,Jj 's Issue #37, dated January 6,1982, (G92-82-03 ).
Q y,t, o
v.
y
; Wh. owing are the results of our confirmatory analysis to verify the w la '
tric blowdown loads in the WPPSS No. 2 reactor cavity. The HPPSS applicant has presented the pressure transients of a spectrum of pipe breaks in reference (1) and resultant force acting on the pressure ves-sel and the sacrificial shield walls in reference (2). The most severe y
postulated breaks are the 24 inch recirculation break in the lower por-tion of the reactor cavity and the feedwater ifne break in the upgr por-tion of the reactor cavity. The applicant used the RELAP-3 computer code.
A thirty node model was set-up out of a 180' reactor cavity segment.
The mass and e'ergy released from the postulated pipe breaks are located n
in the sacrificial shield wall (SSW) sleeve penetration. There exists orifice-type plates restricting the flow to the annulus.
In the appli-cants modeling of the break volume, the nass and energy is directly routed to the annulus and drywell based on area ratio. To assess the conservation of this assumption, peripheral studies of putting the full blowdown into the SSW penettation with different Moody multipliers at the break volume, resulted in less force-moments than puttino the pro-portional mass / energy directly in the annulus and drywell (Table 1).
Obviously, this was due to the critical flow condition at the orifice plates. Therefore, the applicant's methodology is conservative.
n.
-[M In an attempt to verify the applicant's analysis, Los Alamos ational
'g Laboratory had independently modeled the RRPSS reactor cavity. A seventy-three node model was utilized by LAtlL to calculate the force-moment pro-rao N (8 files acting on the sacrificial shield wall using the ceMMPE N001 g9 conputer code for the 24 inch meirculation line break.
g o E8 The analyses presented in reference I was based on old and more conserva-tive assumptions; such as, non-compression of the RPV insulation and in-9 stantanoons break opening time data. The design of the structures are M
based on these assumptions. Whereas, piping and components attached to
[
the SSW or the RPV use the current state of the art nethods (nresented in Issue W - October rgsponse) such as, conpressfon of the RPY insulation 1 0 omesp.......and finife breek opening tice deta.
The vet & m cedh.mit! -have a t;4 e-m co!!. Tact!. A:..!!stafranpce...CSa,i.nsr
- ...& g 911. 3,......
tacNm m m n,wvem OFFICIAL RECORD COPY ucroa o-mm
P" J.M. i 2 3 ;32 l
b John Kudrick '
factor added to the pressureetraces and force profiles. The results of using the mass and e,LANI. model with the postulated 24 inch recirculation line break nergy data yielded peak calculated force on the SSil of about 15% lower than those calculated by applicant (Table 2). This slight dis-crepancy is probably due to the difference in the computer codes.
In conclusion, the applicants analyses are acceptable.
./c
/
Allen Notafrancesco Containment Systems Branch Division of Systems Integration ec:
F. Eltawila
- 11. Butler DISTRIBUTION CENTRAL FILE CSB READING FILE ANOTAFRANCESCO
, (L I
........7.............
M l.........:.DS !............... S b
.C..S B...:.D.S...I CSB:D cFhCE)
..s....o......m.J...i.K..u dr4 c..k.................
.W..B u tl e r............ '
P....I.IOTAN o t..I.8.I......
afranc e c :n su:mus) 1
................/.*.N...
f2........................ 1../..../. 8. 2........
_.n >
Nac ro:u sie pow hacu mo OFFICIAL RECORD COPY usom. mi-maa
k,
.o WPPSS NO. 2 - REACTOR CAVITY ANALYSIS TABLE 1 - PARAMETRIC STUDY Note:
a.
LANL model based on Ref. (1) data b.
Mass / Energy release rates based on finite break opening time data (Issue 37 - October Response) c.
24 inch recirculation line break d.
Since model is a 180" segment - blowdown is halved MODEL DESCRIPTION RESULTANT FORCE 1.
Blowdown in SSy sleeve 5.62E5 LBF
.6 moody mult, everywhere in.028 sec 2.
Blowdown in SSW sleeve 7.48E5 LBF 1.0 moody mult. surrounding in.0295 sec break volume
.6 moody mult., elsewhere 3.
Blowdown separated in drywell 9.17E5 LBF and annulus regions directly in.0285 sec
.6 moody mult.everywhere TABLE 2 - COMPARISON OF APPLICANTS SUBMITTAL PEAK CALCULATED FORCE ON SSW NOTE:
a.
Geometry and blowdown are based on reference (1) data b.
24 inch recirculation line break (halved due to symmetry)
MODEL DESCRIPTION RESULTANT FORCE 1.
LANL MODEL 1.22E6 LBF Blowdown separated in the in.0175 sec drywell and annulus region
.6 moody mult everywhere COMPARE computer code 2.
Applicant 1.43E6 LBF Separated blowdown in.026 sec RELAP 3 computer code 1.4 factor subtracted frcmRef(2) submittal
j'd - 17 7
/L1 em
&L/r+ n g!*/8 W I
\\
WWf fyy9-OV97 l
l x
l x
i
}
f
.G
\\
\\\\
DISTRIBUTION:
f See attached list zlu
- /
Docket fio.: 50-397 MEl10RA;400ii FOR:
A. Schwencer, Chief' Licensing Branch lio. 2 Division of Licensing.
FR0l4:
R. Auluck, Project Manager Licensing Branch lio. 2 Division of Licensing
SUBJECT:
FORTHC0filflG MEETIf4G WITH WASHIt4GT0ft PUBLIC POWER SUPPLY SYSTEM (WPPSS)
DATE & TIME:
Thursday, Febuary 11, 1982 3:30 am LOCATI0ti:
WiP-2 Site Richland, Washington PURPOSE:
Review of Containment Buckling Analysis PARTICIPAl1TS:
liRC WPPSS S. B. Kim R. lielson and D. Bushnell supporting staff D
R. Auluck, Project itanager Licensing Branch fio. 2 Division of Licensing cc: See next page
' ' '2 8202160199 B20201 PDR ADOCK 05000397 TrrUPIM/'liI -
c-A PDR
/
Ie 4
/
RA%T(0Lf2')
DLR8t2)
DL:
,,,,,,,4(. cli77t""
ASm dpgr ",, ", ", ",,, ", ",, ",, ", ", ", ", ", -
", ",, ", ", ",,, ",, ", ",, ~ ~ ",
,,,,,,,...,,,,1,,,,,,,
b.,,,,,,,
suazac k
,1,/,, J.. 8, 2...,,,,,,1/.,.)p 2
care >
hac roau sie tio-soi encu c:4a OFF1ClAL RECORD COPY uso*oani-m.co i
3 Mr. R. L. Ferguson Managing Director Washington Public Power Supply System P. O. Box 968 3000 George Washington Way Richland, Washington 99352 cc:
Nicholas Reynolds, Esquire Debevoise & Liberman 1200 Seventeenth Street, N. W.
Washington, D. C. 20036 Richard Q. Quigley, Esquire Washington Public Power Supply System P. O Box 968 Richland, Washington 99352 Nicholas Lewis, Chainnan Energy Facility Site Evaluation Council 820 East Fifth Avenue Olympia, Wahington 98504 Roger Nelson, Licensing Manager Washington Public Power Supply Systen P.O. Box 968 Richland, Washington 99352 Mr. O. K. Earle, Project Licensing Supervisor Burns and Roe, Incorporated 601 Williams Boulevard Richland, Washington 99352 Mr. Richard Feil U.S.N.R.C. Resident Inspector WPPSS-2 NPS P.O. Box 69 Richland, Washington 99352 1
1 i
i I
FEB 1 1982 MEETING NOTICE DISTRIBilTION:
DATE:
NRC, Region I Bra nc ea ing File NRC, Region II NRC PDR NRC, Region III Local PDR NRC, Region IV NSIC NRC, Region V TERA E.G. Case NRC
Participants:
D.G. Eisenhut/R. Purple
~
T. Novak 5,B Kim S. Varga D. Bushnell u.djA D. Vassallo N,
R.A. Clark
/./
J.F. Stolz
/
g R. Tedesco i
-9 B.J. Youngblood
,3 Ts A. Schwencer F. Miraglia Ef s
E. Adensan 4
J.R. Miller y
G.C. La inas
~'e-T. Ippolito W.T. Russell bec: Applicant Service List D.M. Crutchfield R.H. Vollmer Branch: Licensing Branch No. 2 R.J. Mattson H. Thompson Project Manager:
R. Auluck V. Moore S.H. Hanauer Licensing Assistant: E. Hyl ton J.P. Knight W.V. Johnston D.R. Muller P.S. Check R.W. Houston L.S. Rubenstein i
F. Schroeder i
M.L. Ernst Attorney, OELD' Ol&E OSD (7)
{
ACRS (16)
Resident Inspector i
i l