ML20065T362
| ML20065T362 | |
| Person / Time | |
|---|---|
| Site: | Byron, Braidwood, 05000000 |
| Issue date: | 10/27/1982 |
| From: | Tramm T COMMONWEALTH EDISON CO. |
| To: | Harold Denton Office of Nuclear Reactor Regulation |
| References | |
| 5319N, NUDOCS 8211020347 | |
| Download: ML20065T362 (10) | |
Text
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O Commonwe:lth Edison j ) one First National Plaza, Chicago, tilinois O 7 Addrsss Riply to: Post Office Box 767
(/ Chicago, Illinois 60690 October 27, 1982 Mr. Harold R. Denton, Director Of fice o f Nuclear Reactor Regulation U.S. Nuclear Regulatory Commission Washington, DC 20555
Subject:
Byron Station Units 1 and 2 Braidwood Station Units 1 and 2 Main Steamline Break Subcompartment Analyses NRC Docket Nos. 50-454, 50-455, 50-456, and 50-457 References (a):
Augus t 10, 1982, letter from T. R. Tramm to H. R. Denton.
Dear Mr. Denton:
This is to provide advance copies of revised FSAR information regarding the consequences of a postulated break in a main steam pipe at Byron and Braidwood stations.
This updates analytical information provided in reference (a) and in FSAR Amendment 39.
Attachment A contains corrected figures for the steamline break report.
The changes are necessary to correct computational errors.
The overall results o f the analysis are not altered.
This information will be incorporated into the FSAR in the next amendment.
Please address questions regarding this matter to this office.
One signed original and fifteen copies o f this letter and the attachments are provided for your use.
Very truly yours,
,/
a
av b W ~
T.R.
Tramm Nuclear Licensing Administrator 1m Attachment A 5319N l
82110203C B21027 PDR ADOCK 05000454 A
e
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ATTACHMENT A REVISED FIGURES BYRON /BRAIDWOOD FSAR ATTACHMENT C 3.6 C3.6-3 C3.6-5 C3.6-6 C3.6-8 l
C3.6-9 C3.6-ll C3.6-12 C3.6-14 5319N
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30.
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BYRON /BR AIDWOOD ST ATIONS l
i FIN AL S AFETY AN ALYSIS REPORT
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r FIGURE C3.6-3 l
DIFFEREtiTIAL PRESSURE VS. TIME FOR fl00ES 2, 3, 4, AllD 5 (BITAr I!! f!ODF 5)
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10.0-g MRINSTERM LINE BRERK IN L8HER 2ND QURD. VRLVE RBOM (NSDE 5)
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BYRON /BR AIDWOOD STATIONS FIN AL S AFETY AN ALYSIS REPORT FIGURE C3.6-5 4
DIFFERErlTIAL PRESSURE VS. TIME
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BYRON /BR AIDWOOD ST ATIONS FIN AL S AFETY AN ALY SIS REPORT l
P I
FIGURE C3.6-6 DIFFEREllTIAL PRESSURE VS. TIME FOR fl0 DES 2, 3, 4, Afl0 5 1
1-(porny pl r:nnr 6)
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FIN AL S AFETY AN ALYSIS REPORT l
FIGURE C3.6-8 1
1 t
DIFFERENTIAL PRESSURE VS. TIME FOR N0 DES 9,10,11, AND 12 (BREAK IN N00E 6)
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MRINSTERM LINE BRERK IN 2ND 4 IST QURD TUNNEL (NODE ?)
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BYRON /BR AIDWOOD ST ATIONS FIN AL S AFETY AN ALYSIS REPORT FIGURE C3.6-9 1
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10 0 MAINSTERM LINE BRERK IN S
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BYRON /BR AIDWOOD ST ATIONS i
il FIN AL S AFETY AN ALY SIS REPORT I
FIGURE C3.6-ll DIFFEREflTIAL PRESSURE VS. TIME FOR fl0 DES 9,10,11, Afl012 h
(BREAr: Irl fl0DE 7)
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10 0-o NRINSTERN LINE BRERK IN 1
U IST QURD TUNNEL (NODE 8) a.
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m E
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Nodes 2 & 3 2.5 -
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10-3 10-2 10-1 10 TIME (SEC) 10.0
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IST QURO TUNNEL (NODE 8) n.
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w e
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i.i.i iiiii i.i..iiiii z
-z.5 10-3 10-2 10-1 100 P
TIME (SEC)
BYRON /BR AIDWOOD STATIONS FIN AL S AFETY AN ALYSIS REPORT h
FIGURE C3.6-12 DIFFEREflTIAL PRESSURE VS. TIME FOR fl0 DES 2, 3, 4, AtlD 5 (BREAK IllfiODE 8)
. M1W il l.
l l
/
10 0
~
0 MAINSTERN LINE BREAK IN y
1ST QUAD TUNNEL (NODE 8) w 75-U p
E Node 9 E
5.0 -
Node 10
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t 25-e w
b 5
.0 N
=
-2.5 10-3
.....,,,,,,2 10-10-1 100 TIME (SEC) 10 0 MAINSTERN LINE BREAK IN m
IST QURD TUNNEL (NODE 81 m
7.5 -
U
~
S Node 12 m
E 5.0 -
Node 11 a
.Ei!.
25-w E
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b 5
.0 3
8 o
Z
-25
,,,,,,,,,,g
..,,,,,,,,g 10-3 10-2 10-1 100 TIME (SEC)
BYRON /BR AIDWOOD ST ATIONS FIN AL S AFETY AN ALYSIS R EPORT FIGURE C3.6-14 DIFFEREtlTIAL PRESSURE VS. TIME FOR fiODES 9,10,11, AtlD 12 (BREAK Irlfl00E 8)
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