ML20079L435
| ML20079L435 | |
| Person / Time | |
|---|---|
| Site: | Comanche Peak  |
| Issue date: | 10/30/1991 |
| From: | Woodlan D TEXAS UTILITIES ELECTRIC CO. (TU ELECTRIC) |
| To: | NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| References | |
| TXX-91402, NUDOCS 9111060290 | |
| Download: ML20079L435 (17) | |
Text
_ _ _ - _ _ _ _ _. _ _ _ _
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.T Log # TXX-91402 h
j File # 10010 915 YUELEC1RIC October 30, 1991
% tillam J. Cahlll. Jr.
o.. i. vn r n.&u U. S. Nuclear Regulatory Commission Attn: Document Control Desk Washington, D. C.
20555 SUDJECT: C0HANCHE PEAK STEAM ELEC1RIC STATION (CPSES) UNIT 3 DOCKET NO. 50 445 REQUEST FOR ADDITIONAL INFORMATION ON RXE 88 102 "TUE 1 DEPARTURE FROM NUCLEATE BOILING CORRELATION" REF:
Letter from the NRC to Mr. William J. Cahill, Jr. dated October 4, 1991, Requesting Additional Information regarding Topical Report RXE 08-102 Gentlemen:
Attached, please find TV Electric's resnonse to the list of questions provided in the referenced letter.
Should clarification or additional information regarding responses to the referenced letter be required to enable the Staff to complete its review, contact Mr. Jimmy D. Seawright at 214/812 4375.
Sincerely, William J. Cahill. Jr.
6 By:
D. R. Woodlan Docket Licensing Manager HCP/gj Attachment c - Mr. R. D. Martin, Region IV Resident inspectors. CPSES (?)
Mr. T. A, Bergman, NRR
,- 1, Em E,
_5ADOCK0500ggy>
hg
- DR 4m N.otne street LB. s1 Datin,Te as 7520t P
l
, Attadimcat to TXX-91402 Page 1 of 16 Pcsponse to IMC Rtquest for IdliticnT1 Infornition on ILXI;-88-102-P 1.
[E LPigacat: The nunter of experirental data points, 934, was tatulated for th eticcts of array size, axial heat flux distrilution, grid pitch, heatal lenyth, ard guido tutes. This translates to atxut 187 data points per effect. To ocriplete the revicw of the 'IUE De correlation ard ocxTarlsons with other correlations, ploano tMJulate the numtxtr of data p3fnts corrnqxnling to the varicin pressure levolc ard msa fluxen investigatal during the tastirg.
E Lflectric Pfroorra Four ditx::rcto pressure levels can bo identified within the experimatal data tuno unod to devolep the IUE-1 D E Correlation. The ranges of these pressure Icvola ard the respectivo number of data points within each rango are:
IT[matro Farng Lof Data noints within._rarug 1485 - 1565 pola 108 1785 - 1825 paia 176 2045 - 2205 pain 281 2365 - 2435 paia 269 1ha mas flux ratryo over which the correlation was developed is rot as conveniently discretizcd as the pressure rargo. As Figure 5-2 in RXE-88-102-P shcus, the local mas flux is relatively continuously distributed over the entire rargo. Ilom ver, to facilitata an asscsment of the adcquacy of thn number of Gata points for a subat of the mss flux rargo, the follcuin) local mass flux levels, alory with the numter of da' ' points in each level, have been emlocttd:
Mrs Flux layng Lpf Data noints within raDG9 0.90 - 1.60 Mlin/hr-ft2 172 1.60 - 2.25 Mitn/hr-ft2 306 2.25 - 2.70 Mlin/hr-ft2 187 2.70 - 3.53 M11n/hr-ft2 269 2.
IRC P/xnnt,: 'Iho ncuenclaturo given on page 2-4 identifies Z as o
"the tviling leryth." In the literaturn, boiling lergth refers to the portion of the boated lertJth that is experiencirn boiling cordit.icns, stillo 1UE has chocen this parameter to be the distanco fran the inlet to the heated soction to the paint where toiling
4
. Attachment to 'D:X-91402 Pago 2 of 16 1
first occars. Pleaso clarify that this paramtnr, which reticcts the mdrmled lerntn, has been prcperly uccd in tim devolquent ard use of dio correlation.
Ellectric Reoronse Tho grameter Z, in the non-uniform axial o
heat flux factor, the stardan! 7 tog factor, does irdocd repreocnt the m*m, lod leryth of a channel. 'Iho uso of the subcooltd length as the lower limit in tho inttgral in tho 7brg factor is consistent with the development of the 1brg factor as dcocrilxd in Refercrea 3 of RXE-88-102-P.
It has been correctly applied in both the developtent ard the subcoquent uno of the 1UE-1 um cortvlation.
3.
NPC Reaueat:
'Ib miko the tablo on pago 2-5 (of RXE-88-102) ompleto, pleaso identify the rarges for the followiry parameters:
- 1) fuel rtd diamater, 2) thitnblo guido tubo diameter, 3) rod pitch,
- 4) distanco frun inlet at khich um occurrod, ard 5) enthalpy at the DG locatien.
Please also supply the inlet testparature for the testa.
'lho rfagic for items 1 thrurJh 4 requestod above are:
ruel Rod Diameter:
0.374 - 0.422 indies 1hitnble cuido lubo Diameter:
0.482 - 0.544 in tes Itd Pitch 0.496 - 0,555 indies Distance to T/d):
68 -
168 indns
'Iho rarge of the dktanco to DS over shich the ctrrelation is considortd applicable is not limittd to distances greater than 68 inches even thatyh this reprments the 1cuor limit of the aperirrental data used in the correlation developtent. As Figure 1 (attachod) chows, the behavior of the.:alculated !Out exhibita rm trord with chargiJg distances to DS. 'Ihis lxhavior iraicsten that extrapolation below the 68" value is acceptable.
1ho rargo for the enthalpy at tho um location is not identified.
The equivalent fluid prqmrty which acooants for tho effect of the local fluid crmyy on um ard which is used directly as input into the itJE-1 correlation is the local quality. The local quality is used to establish the rarna of fluid encryies over which the correlatJon can be considered valid. The raryo of the local quality is providad on page 2-5 of RXE-88-102-P.
Similarly, a grameter which reflects tha inlet taporaturo ard i
khidt represents the effect of inlet taperature on am ja the inlet fluid energy with rtunct to saturation oorditions.
For thin reasco, the rargo of inlet subcoolity in terms of Btu /1tn is rrsro l
amuriate for defininy a li titirg rargn. 'Iho raryo of tho inlet subcoolire is given on p.,o 2 5 of RXE-88-30?-P.
l
l l
. Attachment to TXX-91402 Page 3 of 16 4.
UBC_Bggest: To allcu for a more quantitativo masure of the bias, please provide fits of Que pratictal as a function of Cum measured for cad) test section ard for all data cambirai. '1ho interoopt of the fits r#x11d havo the valuo 0.0, with a sicpo of 1.0.
21LElcctric Ecqam: The fits of Cum prodletod as a function of QDNB masural for all data combined ard for each test section inilvidually have been performd usiin linear regression.
't.ho results of the linear regression fits are sumarized in Table 1.
1 Plots of predicted OlF vtrsas masured heat flux for all test cista ambined and for each test section aru provided in Figures 2 through 21. TW lines are shown on each plot. The top lino i
represents the locus of points corrmpording to a Mumn of 1.16, l
Mtich ia.the 95/95 limit for the WC-1 DNB correlation. '1he other lins represents the locus of points correspording to a MumR of i
1.0.
5.
LGU' Pasatil;: tha correlatico does not extrapolate outsido the rangec of the experimntal data base, and urder certain ocn11tions i
the correlation pralicts nsyative values of the um hoat flux.
In view of these concerns, please describo the controls in the VIPRC-01 oude to doal with such cirunstanma ard also explain wtat i
is done when the VIPRE-01 calculutal conditions excoed any of the experimental data baso rarges, inc1'xlirq the correlation and the Tr49 F-factor.
'BLElnet,ric Pesoonse: h VIIRE-01 codo will terminata with a fatal error massage if a rogative critical heat flux is calculatai. Thera are to conttels within VIPRE-01 to f3hg when calcult.tod cmlitic.m my be cntside the raroe of applicability of the acrrelation. It is the responsibility of the ww.r to ensure that the onrrelation has not, been usal cutside its rarge of
.i applicability. Chould any of the calculatad corriitions exceed the raivja of the 1VE-1 correlation, Etm would be assumod to occur.
I-6.
LUC Pruuest:
Is there any intent.to apply the WE-1 correlation to i
fuel assemblies that have been roccnstituted to include one or more 1
I; dumy fuel rcds?. If so, define the configuration limits for such.
J applications ard justify the atylicability of the experimntal data c
[
l W Electric Resocnse:
h 'lUE-1 cotrelation is considerx! to be arplicable to reconscitutal fuel aramblics with the limitation that the TUE-1 correlation cannot be a;pliori to rods which share a single enbchannel with two or more " cold" rods.
(" Cold" rods are either guide thimble tubos, instnment thimble tubes, or reconstitutal fuel rods.) This limitation is nocat m ry becaura the
- Attach T.at to TXX-91402 Pa9e 4 of 16 experimntal data hws dorn rot inclaio any tect sections khich cinulata this configuration. 'Iha test soctions in the 'IE-1 correlation data base were designcxi to represent Wentirghouse 15X15 ard 17X17 fuel assenblics. !kxna of the test cectiom inc1wkwl an urheated rod to cinulato a guido thirble tute or an instrurent thirble tubo. A " cold vall -factor" is includod in the IE-1 corrolation to acemnt for the Ctm b*.havior of a heated rtd which shtav.s a subchannel with an unhoated rod as e>hibitui in the tests. The cold wall offect of a reconstituti.d fuel rod is ocnsidered to be acrnparable to the cold wall effect of the thinble tubos. '1herefore, as Icog as the configuration of the reconstituted fuel ascourblies doca tot incinio two or core unhoated Itda sharing a single subctannel, the exTr.rlmntal data loro is cosidanad to be reprecentativo of the fuel assembly ard the 'IUE-1 carrelation is applicable.
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.Attachmnt to TXX-91402 Pago 5 of 16 TAB 12 1.
'IT!Tr 111.HBIR FIGURE 51DPE SID.
Y ETID.
SILTIOti OF DATA litMBFR DGOR 11TI7ICFI'r DBOR IN NIllis "m"
OF "m" "b"
OF "b" R'2 AIL 934 2 0.92521 0.00802 0.04022 0.00487 0.93458 124 34 3 0.49569 0.07041 0.45141 0.05345 0.60764 125 33 4 0.56143 0.08606 0.437E9 0.08299 3.57857 127 37 5 0.60838 0.10133 0.30/44 0.09199 0.50739 131 37 6 0.86961 0.06641 0.05932 0.03167 0.83048 132 36 7 0,81511 0.07688 0.05845 0.03540 0.76778 134 38 8 1.09186 0.05874 -0.04428 0.02714 0.90565 139 38 9 0.93280 0.06286 0.03141 0.02953 0.F5950 140 32 10 0.64434 0.08522 0.26891 0.01300 0.65581 146
'38 31 0.82746 0.07395 0.07832 0.03593 0.78605 148 69 12 0.95622 0.03573 0.02506 0.01723 0.91445 153 41 13 1.17559 0.08458 -0.06700 0.04113 0.83202 157 75 14 0.85608 0.03555 0.09511 0.02252 0.88412 158 66 15 0.67123 0.04017 0.18308 0.02656 0.81445 160 66 16 0.65900 0.03852 0.22535 0.02644 0.82058 161 67 17 0.93811 0.05669 0.02030 0.02554 0.80815 162 68 18 0.97977 0.02625 0.02123 0.01277 0.95477 163 41 19 0.63544 0.07604 0.23757 0.04933 0.64162 164 69 20 0.99791 0.03054 0.00781 0.01385 0.94094 166 46 21 0.99344 0.08582 0.01251 0.04309 0.75283 9
I
. Attachment to TXX-91402 l' age 6 of 16 FIGURE 1.
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FIGURE 3.
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1,2 Woosured Heat flus (JBtu/hr-f t2)
. Attactment to T)0(-91402 Page 7 of 16 FIGURE 3.
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l AttadtT.nt to TXX-9140; Page 8 of 16 FIGURE 5.
Ye st $ec tic.n 127 1.2
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FIGURE 6.
Test $sttion 131 1.2
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Attactu%nt to 'IXX-91403 Page 9 of 16 FIGURE 7.
toit section 132 1.2 t.1 -
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FIGURE 8.
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AttactLvnt to TXX-91402 Page 10 of 16 FIGURE 9.
Test Section 139
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Attactment to 'IXX-91402 l
Page 11 of 16 FIGURE 11.
test section 146 1.2 -
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FIGURE 12.
Test Section 148 1.2
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Attadtwat to TXX-91402 Page 12 of 16 FIGURE 13.
1.s s.o,o n iu s,2,,i-.. -
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1.2 ueosured Heat flas (MDiu/hr-f t2)
FIGURE 14.
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1.2 ueosured H.ot Fluu (W0tv/hr-f t?)
Attactr.Ent to TXX-91402 Page 13 of 16 FIGURE 15.
Test Section 158 1.2
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FIGURE 16.
Test Section 160
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1.2 Measured Heat Flux (WBlu/hr-f t2)
- -. _ - _... ~ _.. _ _ _. _ _ _. _ _.-
4 Attachment to TXX-91402 Payc_ 14 of 16-FIGURE 17.
t..i s.citon ist 1.2
, /,.
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2
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aa
- 31
,'$chY E
0.2 -
p/
h 0.1 -
a V
O i
i i
i i
0 0.2 0.4 0.6 0.8 1
1.2 Woosured Hool Flus (MBlu/hr-f t2)
FIGURE 18.
Test Section 162
- 1. 2 -
/
/
/
/
/
1.1 =
/
l,
,/
'[
g 09-4
/
i
[//
y 7
- 0. 8 -
/
/
/
/
g 2
0.7 - -
0.6 -
UU O P
- 0. 5 -
i'
/ qpr'o Q(
5
- 0. 4 -
S v
&a 0.3 -
f f
,/
n 0
0 0.2 0.4 0.6 0.8 1
1.2 Measured Heat Flus (MBlu/hr-f t2) l
l l
l Attachmnt to TXX-91402 l
Page 15 of 16 FIGURE 19.
Test Section 163 1,2
/
1.1
/
1 -
,/
./
'/
^
- 0. 9 -
j-'/
U
+
'/
L 0.8 -
/
ld.U/
k
. q,, ty,-f;/ CDU
.a O,7 _
,,(g[1] h;' O 0,0
{
- 0. 6 -
g
- Dy di h
g ft 0 0.59
]
,/,/ D f
- 0. 4 -
,,/'./
e s
'/
e s
//
4 0.3 -
,,/]/'
//
0.2 -
[
O.1 -
/
/
9 i
i i
I i
i i
i 0
0.2 0.4 0.6 0.8 1
i,2 Woosured Hool flus (MBlu/hr-if 2)
FIGURE 20.
Test Section 164 1.2
,./
',r'
,r '/
/
1,1 -
/
/
1 -
/
,/
,/
/
/
/
0.9 -
^
/
/
T
/
,l 0.8 --
/
/
5
/
, /
E'lo Wo 2
0.7 -
aM
- 0. 6 -
d0/O g
b jgt (S n/
U 0.5 -
y tv~f n$sE
- 0. 4 -
g g
0.3 -
0.2 -
7, 0.1 -
,9 0-i i
F
'~
1 i
i O
0.2 0.4 0.6 0.8 1
1,2 Measured H at Flux (WBlu/br-f t2)
o httachrrmt to TXX-91402 Pago 16 of 16 clGURE 21.
Test Set tien 10 ft
,,;.~..._.....~--- _ - _ -..
1.t
, a g
0.9 A l
n o s -]
t 2
0.7 m
3 O
gp'i:3r w an { C
- 0. 6 -
~
1 jh m' Ayn t t'
')
0.s.
o
~
u s
j u-0.3 7
0.2
//
0.1 0.,/__,_._ _,
.7_.,_,_._,.__r.___r__,___,___7 0
0.2 0.4 0.6 08 1
1,2 Measured Hoot flum (MBlu,ihr-f t2)
_ _ - _ _ _ _ _ _ _ _ _ - - _ - _ _ _ _ - _ _