ML20207N189
| ML20207N189 | |
| Person / Time | |
|---|---|
| Site: | Summer  |
| Issue date: | 10/13/1988 |
| From: | Bradham O SOUTH CAROLINA ELECTRIC & GAS CO. |
| To: | NRC OFFICE OF ADMINISTRATION & RESOURCES MANAGEMENT (ARM) |
| References | |
| NUDOCS 8810190014 | |
| Download: ML20207N189 (8) | |
Text
-__ -______ _ ___ _ _ _
Rcergn m s oss con,ser e7 m
gin, ige sc 2ns Nuci.ar operation.
SCE&G
' = " "
October 13, 1988 i
Document Control Desk U. S. Nuclear Regulatory Commission Washington, DC 20555
Subject:
Virgil C. Summer Nuclear Station i
Docket No. 50/395 Operating License No. NPF-12 Technical Specifications Change VANTAGE 5 fuel Gentlemen:
In support of the review of the South Carolina Electric & Gas Ccmpany request to amend the Technical Specifications to allow refueling and operating with VANTAGE 5 fuel, the Staff has requested additional copies of the following figures from Technical Specifications.
Figures: 2.1-1 3.2-2 3.1-0 3.9-1 3.1-3 3.9-2 3.2-1 These figures are attached to this letter, and should you have any questions concerning this matter, please call at your convenience.
Very truly yours k
A
/
- 0. S. Bradham i
MOB /OSB: led l
Attachments l
{
c:
D. A. Nauman/J. G. Connelly, Jr./0. W. Oixon, Jr./T. C. Nichols, Jr.
4 E. C. Roberts W. A. Williams, Jr.
R. L. Prevatte Regional Administrator J. B. Knotts, Jr.
I J. J. Hayes, Jr.
H. G. Shealy General Managers M. D. Blue
(
C. A. Price /R. M. Campbell, Jr.
L. R. Cartin i
R. 8. Clary NSRC K. E. Hodland RTS (TSP 880013) ok J. C. Snelson NPCF G. O. Percival File (813.20) 8910190014 gggog3 DR ADOCK 05000395 p
p 670 665 UNACCEPTABLE CPERATION
}
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(2 %.630) 2250 2
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)
When opera ting in the reduced RTP region of Technical l
Specification 3.2.3 (Figure 3.2 2) the restrictedpower levelmust be co'sidered 100*4 RTP for this figure.
Figure 2.f.f Reactor Core Safety Limit. Three loops in Operation i
Summer. Unit 1 22
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% OF RATED THERMAL POWER FIGURE 3.10 MODERATOR TEMPERATURE COEFFICIENT VS POWER LEVEL Summer UNtT1 3/4 1 5a
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0 1
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6 7
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10 11 12 BOT 10M TOP OF CORE HEIGHT, FT.
op FUEL FUEL i
i FIGURE 3.21 l
l K(z) NORMAll2ED Fo(1) AS A FUNCTION OF CORE HEIGHT 1
I l
F i
l l
I r
i l
i I
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l l
I Summer UNIT 1 3/4 2 7 l
MEASUREMENT UNCERTAINTIES OF 2.1% FOR FLOW AND 4.0% FOR INCORE MEASUREMENT OF FN.ig ARE INCLUDED IN THIS FIGURE 38 ACCEPTABLE UNACCEPTABLE OPERA *10N REGION OPERATION REGION l
36 I
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SEE NOTE (1.00,28.08) y 3,
(1.00,27.79) i Sn s.r.
(1.00,27.50) a i
1 26 24
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1.05 1.1 4
R = F%W1.56 [1.0 + 0.3(1.0 P))
FIGURE 3.2 2 RCS TOTAL FLOW RATE VS R THREE LOOP OPERATION P:OTI: When eserateg in thes region, the tostrioed power leweis shaW cosadored to be 100% of rated thermal power (RTP)for f agure Lt.1 SUMMER UNIT 1 3/4210
30 27.5
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s 12.5 f
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W UNACCEPTABLE 7.5
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g
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5 2.5 I
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3.25 3.5 3.75 4
4.25 FUEL ASSEMBLYINITIAL ENRICHMENT,WT.% U 235 FIGURE 3.91 MINIMUM REQUIRED FUEL ASSEMBLY EXPOSURE A5 A FUNCTION OF INIT!AL EN RICHMENT TO PERMIT STORAGE IN REGION 2
$UMM ER - U NIT 1 3/4915
45 42.5 i
40 3
37.5 o
r Mo 35 B
/
I 32.5
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d l
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ACC[H
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d 10 l
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=
5
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0 1.25 1.5 1.75 2
2.25 2.5 2.75 3
3.25 3.5 3.75 4
4.25 i
FUEL ASSEMBLYINITIAL ENRICHMENT,WT.% U 235 I
i FIGU RE 3 9-2 MINIMUM REQUIRED FU!L ASSEMBLY EXPOSURE A5 A FUNCTION I
05 INITIAL ENRfCHMENT TO PERMIT STORAGE IN REGION 3 i
i
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i SUMMER UNIT 1 3/4916 i
-