ML18227B017
| ML18227B017 | |
| Person / Time | |
|---|---|
| Site: | Turkey Point  |
| Issue date: | 12/30/1976 |
| From: | Adomat E, Robert E. Uhrig Florida Power & Light Co |
| To: | Stello V Office of Nuclear Reactor Regulation |
| References | |
| L-76-439 | |
| Download: ML18227B017 (35) | |
Text
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UrSr NUCLEAR REGULATORY COMMISSION
<2-Vol NRC DISTRIBUTION FQR ART 56 DOCKET MATERIAL DOCKET NUMB
~
50-'2 FILE NUMBER To: V. STELLO, JR.
FROM:
FLORDIA POWER& LIGHT CO.
MI+II, FLORDIA R.E.
UHRIG DATE OF DOCUMENT 12/30/76 DATE RECEIVED 1/6/77 OLETTER I3OR IGINAL QCOPY 0 NOTO R IZE D
-S UN C LASS IF I E D PROP INPUT FORM I p r
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NUMBER OF COPIFS RECEIVED 1
DESCRIPTIOA I'I 77
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I ~ l l l IP.Cllr 1 'l i 1 ENCLOSURE J 7,
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SUPPLEMENTAL -INFORMATION PERTAINING ZO THE:ZCCS" RE><~PLUATIOS
(
1 CARBON SIGNED CY'. RECEiVED)
( 15 PAGES)
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TURKEY PT // 3 &'4 I
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P. O. BOX 013100, MIAMI, FL 33101 1 Rc FLORIDA POWER & LIGHT COMPANY gAcp7 g December 30, 1976 L-76-439 Office of Nuclear Reactor Regulation A-tn:
Victor Stello, Jr., Director Division of Operating Reactors U. S.
Nuclear Regulatory Commission Washington, D. C.
20555
Dear Mr. Stello:
COAQ11)10 5
Re:
Turkey Point Units 3 and 4
Docket Nos.
50-250 and 50-251 ECCS Reevaluation Su lemental Information The ECCS Peevaluation performed for Turkey Point Units 3
and 4 was submitted by Florida Power 6 Light Company on December 9, 1976, (L-76-419).
Attached herewith is supplemental information related to the reevaluation which was requested by your staff.
Very truly yours, Robert E. Uhrig Yice President REU/GDW/hlc Attachment, cc:
Norman C. Moseley, Region II Robert Lowenstein, Esq.
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QUESTION I Justify the statement, made in the L-76-419 letter of December 9, 1976, that Cycle 3 is more limiting than Cycle 4 in terms of the parameters used in determining the ECCS performance.
ANSVER The following response addresses Turkey Point Unit 3.
The Unit 4 response will be included in the Unit 4 Cycle 4 RSE which will be submitted at a future date.
The ECCS analysis was performed for Cycle 3, Region 3.
Region 3 fuel, which has the lowest theoretical density (92.0%)
has the largest stored energy of any fuel region in.the core, and therefore results in the highest calculated peak clad temperature for the ECCS analysis.
Unit 3, Cycle 4 will not contain any Region 3 fuel, and the new fuel added (Region 6) has a higher theoretical density (94.5%)
and lower stored energy than Region 3 fuel.
Therefore Cycle 3 is more limi.ting than Cycle 4 with respect to ZCCS performance.
QUESTION Show which of the curves in Figuresla through Sd correspond to hot spot location and which to clad burst location (most of the curves are unlabeled).
ANSNER Figures la through 4d and 7a through Sd have been labeled'o that comparison with Table 2 will show which curves correspond to hot spot location and which to clad burst location.
The labeled curves are attached;
.S 5
lo' TlME (SECONDS) l02 2
Figure 1a Fluicl Quality DECLG (Cp 10)
.95 UJ
.90
.85 U
U CD d.o 70)0-'0 2
5 l0 2
TIME (SECONDS) io 2
Figure 1b, Fluid Quality pECLG (Cp ='0.6)
l.2 iv l.p LU Q
Ch D
9 4.o T-I
~.~,U
~7
,G 5
lpga.
2 5.'
Ipl
.2 TIME (SECONDS)
Ip 2
IP3 FIgure lc.
Fluid Quality DECLG {Cp ~ 0,4)
I.P cQ
,9 U
.8
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~ 7 IO-'
IO 2
5 IO 2
TIME (SECONDS)
IO 2
Figure 1d, Fluid Quality - DECLG (Cg 0.4)
O
<0 1'P
0
~ w 50 I
. - loo g -l50 C.o
-200
-250to-'o' lpl 2
TtME (SEepltOS)
S to~
2 t03 Figure 2a, Mass Velocity DECLG AC@ = I,O)
P
lpp W
0 I
-50 lsJ
~~
-IOO 4.0 g4o g.5
-I50
TIME (SECONDS) 5 lp 2
Figure 2b, Mass Velocity DECLG (Cp 0.6)
tip 30
- lO.
-20 lo' IOl 2
TlME (SECONDS) lp~
2 Figure 2c.
Mass Velocity DECLG (Cp 0.4)
%0 30 w
Qp I
IO I-g2 tl.l cn 0
4,o' lp 20 fO' 5
lo 2 '.
TlME (SECONDS) lo 2
5 IO Figure 2d.
Mass Velocity - DECLG.(CD
> 0.4)
lp3 0l I
lp2 l
4J CD UUM ED 5
C.o'pl r
~ j+
4.Z5" lp' l00 200 TlWE (SECONOS) 300
%00 500 Figure 3a, Heat Transfer Coefficient DECLG (CD 1.0)
ip3 O
I 2
lp~
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Ltl CD U
2 CD UJ
)0)
<<C ts.
r
+I
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liJ 4,.o'.s'o' 200 300 TiME (SECONDS)
Figure 3b, Heat Transfer Coefficient DECLG (Cp = 0.6) a ED I
O
l0~
'02 4,o'o'00 200 TlME (SECOVOS) 300 000 500 Figure 3c, Heat Transfer Coefflclent DECLG (CD ~ OA'I
IO~
U0 l I
U I
I UJ UUU4 ED hlit lx VP o~I0',.o tOO 0
l00 200 TIME (SECONDS)'00
'000 500 Figure 3d, Heat Transfer Coefficient 'ECLG ICp
~ 0.4i O
I tOI t4
2500 2000
!509 a-l000 7OP g 8or7-o<
500 l0 TlME (SECOllOS) l5 20 25 Figure 4a, Core Pressure - DECLG (CD ~ 1,0}
2000 1750 I500 U
I 250 tellg I000 o
750 4.o'00 250 0
200 TIME (SECOHOS) 300.
400 500 O
I/I tel
.2000 I750 I 500 I250 4.o'
'000 750 "00
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250 0
200 TIME (SECONDS) 300 500 Figure 8c, Fluid Temperature - DECLG (CD 0.4) o CD I
Ca)
2000 I750 I
QQ l250 l000 4
2) 750
.,gds 500 250 0
0 loo 200 300 TIME (SECONDS) 400 500 Figure Sb, Fluid Temperature DECLQ (Cp 0.0)
2000 1750 1500 1250 1000 750 500 250 200 TIME (SECOHDS)
QOO Figure Sa.
Fluid Temperature DECLG (CD 1.0)
2500 u
2000 0
1000 I
1500 I
LC IQ A
500 0
0 IOO 200
.T1ME (SECONOS) 500 Fiq~>rc 7d, Penk C1nd Tnmpnrntttre - Ol=.CLG (Cp OAI
2500 2000 CO I
C) 1500 l000 Cl d.o'00 0
l00 TIME (SECONDS) 300 400 Figure 7c.
Peak Clad Temperature DECLG (Cg 0.4j
2500 o
2000 Ch C)
I CO l600 I-L
~
A
'I l000 o
500 g.o' 0
I00 200 TlME (SECONDS)
%00 500 Flcguro 7b.
Peuk Clue Tcmpvruturv - DECLG tCp ~ O.G)
2500 2000 ChO g
l500 4.Zg g
l000 500 0
0 IOO 200 TIME (SECONDS)
%00 500 Figure 7a.
Peak Ctad Temperature DECLG (Cg 1,0)
2500 2000 l500 l000 TOP4 BorT oH 500 l0 20 TlME (SECONDS'0 50 Figure 4d.
Core Pressure DECLG (Cg 0,4j
2500 2000 ul C/7 CA tel e
TOP4 80T7oW (0
20 Vie (SECONOS) 30 Figure 4c, Core Pressure DECLG {CD ~ 0.4)
2500 2000 l500 a&
C/5 l000 78/ g 80770M 00 0
.IO TIME (SECONOS3 I5 20 Figure 4b, Core Pressure - DECLG (CD O.G)
HI C