ML19323C897
| ML19323C897 | |
| Person / Time | |
|---|---|
| Site: | Zion File:ZionSolutions icon.png |
| Issue date: | 05/09/1980 |
| From: | Naughton W COMMONWEALTH EDISON CO. |
| To: | Harold Denton Office of Nuclear Reactor Regulation |
| References | |
| NUDOCS 8005190388 | |
| Download: ML19323C897 (11) | |
Text
p 'N Commonwealth Edison 8005190 3
/
/ one First N: tion 11 Plut. Chicago, llhnois
'(
v/ Address Reply to: Post Office Box 767 Chicago, lilinois 60690 May 9, 1980 Mr. Harold R.
Denton, Director Of fice of Nuclear Reactor Regulation U.S.
Nuclear Regulatory Commission Washington, DC 20555
Subject:
Zion Station Units 1 and 2 Additional Information on Environmental Qualification of Electrical Equipment NRC Docket Nos. 50-295 and 50-304 References (a):
March 20, 1980 letter from A.
Schwencer to D.
L.
Peoples (b):
May 2, 1980 letter from D. L.
Peoples to H.
R.
Denton
Dear Mr. Denton:
In reference (a), the NRC Staff requested Commonwealth Edison Company to provide the Staf f with data necessary for the Staf f calculation of containment environmental parameters.
Reference (b) indicated that Commonwealth Edison's response would be delayed about one week since a major portion of the information was being provided by Westinghouse. to this letter contains Commonwealth Edison's response to the NRC Staff's request for data contained in Enclosure 2 of Reference (a).
Pleas Adress any questions that you might have concerning this matter to this office.
i THIS DOCUMENT CONTAINS POOR QUALITY PAGES
t
' Commonwe lth Edison Mr. Harold R. Denton, Director May 9, 1980 1
Page 2 One (1) signed original and thirty-nine (39) copies of this letter are provided for your use.
1 Very truly yours, William F.
Naught n i
Nuclear Licensing Administrator Pressurized Water Reactors Attachment SUBSCRIBED and S ORN to before me this U'
day of
- Onii, 1980 I
l lliL H Pii ~)k M Of h,.in ifota'ry 'Public 7
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c-ATTACHMENT 1 Commonwealth Edison Company's Response To NRC Staff Request For DATA NECESSARY FOR THE STAFF CALCULATION OF CON'TAINMENT TEMPERATURE AND PRESEURE DECAY TIME FOR ZION STATION UNITS 1 AND 2 I
ZION - UNITS 1& 2 A.
Containment Net Free Volume 6
3 2.736 x 10 ft B.
Passive Heat Sinks Thickness (in)
Area (ft2)
~
.25 steel, 12 concrete 54447
.25 steel, 12 concrete 15026 18 concrete 15500
.25 steel, 12 concrete 2000 12 concrete 36000 9 concrete 7000
.25 steel, 12 concrete 16000
.25 steel 54860
.375 steel 89300 0.6249 steel 1060 5.25 steel, 12 concrete 1147
.64 steel, 12 concrete 1400 10.51 steel, 12 concrete 186 24.25 steel, 12 concrete 54
.75 steel, 12 concrete 440 7.287 steel,12 concrete 604 12.0308 steel, 12 concrete 181 0.25 steel, 12 concrete 14862 0.25 steel, 12 concrete 3712 0.375 steel 32000 Where steel only is listed, the exposed area is for both sides Conductivity Density Specific Heat Btu lb/ft3 Btu /lb F HR-ft F Steel Lined Concrete 511 0.11 26 Concrete 146 0.24 1.6 Steel 511 0.11 26 S
1.1
C.
Initial Containment Conditions Temperature 90*F Pressure 14.7 psia Relative Humidity 0.69 psia D.
Containment Spray System Spray setpoint 23 psig Spray system activation time Elapsed time to activate spray 5 sec Elapsed time for all remainirig items b thru g 41 sec 46 see E.
Fan Cooler System Delay time for RCFC to effect heat removal 43 sec Heat removal capability Figure 14.3.4-1 attached F.
No other heat removal system.-
G.
Worst single failure is the loss of the emergency diesci for Bus 148.
Equipment not operating:
2 Fan Coolers 1 Spray Pump 1 RHR Pump 1 SI Pump H.
Mass and Energy Release Date Tables 014. 28-3 and 4 a t?. ached.
l 1.2 6
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FAN COOLER HEAT REMOVIJ. RATE VS.
CONTADIMENT PRZSSURE
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'IGURE 14.3.4-1 F
r 1
TABLE _014.28-3 t
MASS AND ENERGY RELEASE OVER BLOWD_O_WN Time Mass Rate.
Energy Rate (Sec)
(Ibs/sec)
(BTU /sec) 1.00000E-08 6.61248E+04 3.43247E+07 2.50105E-02 6.61248E+04 3.43247E+07 2.50186E-01 7.11571E+04 3.72120E+07 6.752.03E-01 6.13477E+04 3.3033SE+07 1.30007E+00 5.43747EF04 3.02425E+07 2.20017E+00 4.32824E+04 2.48544E+07 3.20029E+00 3.59018E+0,4 2.11422E+07 4.25020E+00 3.16976E+04 1.89517E+07 5.40007E+00 2.86282E+04 1.72621E+07 6.55016E+00 2.66701E+04 1.61317E+07 20 7.70038E+00 2.55990E+04 1.54883E+07 8.60053E+00 2.41229E+04 1.46062E+07 2.27579E+04 1.37243E+07 9.90039E+00 1.10007E+01 2.18515E+04 1.32595E+07 1.20007E+01 1.85517E+04 1.20816E+07 1.30504E+01 1.80259E+04 1.12783E+07 1.42008E+01 1.70114E+04 1.07334E+07 1.55009E+01 1.51140E+04 9.78390E+06 1.70504E+01 1.32596E+04 8.79639E+06 1.35002E+01 1.19109E+04 7.98460E+06
^
1.96504E+01 1.16897E+04 7.36935E+06 2.07003E+01 1.11030E+04 6.51444E+06 2.16501E+01 9.49383E+03 5.39679E+06 2.25501E+01 8.54853E+03 4.66998E+06 2.34000E+01 7.72378E+03 4.09195E+06 j
2.42501E+01 5.98365E+03, 3.22452E+06
(,
2.57253E+01 2.8457*iEF03 1.54730E+06 2.77229E+01 1.61236E+02 2.08499E+05 2.86954E+01
'O.
O.
i 1.00000E+05 0.
0.
t Amendment 26 11 arch, 1973 1.4
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TABLE 014.28-4 MASS AND ENERGY RELEASE FOR REFLOO_D_
See LBM/Sec BTU /Sec O.
2.8490000E+01
'O.
2.8500000E+01 0.
O.
3.0500000E+01 0.
O.
3.0600000E+01 0.
O.
3.5500000E+01 7.8501751E+02 1.0059575E-:6 3.8500000E+01 8.4178010E+02 1.0767557E-:5 4.8500000E+01 8.00A4957E+0'2 1.0182715E-:5 5.0000000E+01 7.9464092E+02 1.0100316E-:5 5.8500000E+01 7.6499884E+02
- 9. 6819319E-: 3 6.8500000E+01 7.2489503E+02 9.1287659I-:3 7.8500dO0E+01 6.8800906E+02 S.6229601E-:3
[
S.850000bE+01 6.6203519E+02 8.2584164E-: 3 1 7000000E+02 6.3500856E+02 7.883056EE-:3 1.L350000E+02 6.1456972E+02 7.6027595E-:3 1.2335000E+02 6.1183357E+02 7.5262950E-:3 1.4850000E+02 5.0650133E+02 6.1740934E-:3 1.6:77400E+02 4.9670118E+02 6.0552363E-:3 1.8178100EA02 1.4368498E402 1.7440187E--:3 2.0000000r+02 1.3340997E+02 1.6191978E ~3 3.0000000E+02 9.7286706E+01 1.1802778E-:3 1.0000000E+03 7.3584759E+01 8.9229170E*:4.
2.0000000E+03 5.6246115E+01 6.8156188 E-:-
5.000t;00Et03 4.1849646E+01 5.0638 *.20E-:e 1.0000000E404 3.3249525E+01 4.0168314Ee:.:.
Entrainment Ends At 123.4 Seconds for Design Case - Mass Release beco:s: ' 5 5 l':: se,
Energ; Release becomes 1.92 x 105 LTU/see, and resimes with this Table c:
200 seconds.
Entrainment Ends At 161.78 Seconds for 10' Case i
1.5
.inendnent 2i y
- '. arch, 197 3
.i
~
-b 4
a s
\\
Spray
.523o i
l GPM
. A l
7 79o0 GPM Rh*ST s
389000 Galiens
^
Se nantI h ~/cc *p Spill EPM rc=p
~
FIGURE 1 INJECTION PHASE
![ll'EN,D'
$M LE^ h?-/L L12C 9
~ 6fC
{'$} LUGS ~(t V E^'
9 g
e 1.6 O
e
. en
\\
Containment" g
Spray Flow GPM l.
l 4
6 A
6 b
o d
6 6
Residusi M A-l Spray
'gpg Flow Cooling GPM Water Flow To Core GFM Y
~
n-
~
Reactor h
e..
7 Cooline YAOO 7
OM NM l
WaterF16w GPM To Spill GPM I
(/000o Totti Recirc. Flow GPM 6
Containner.t Spray HX UA x10 Cooling kater Temp F/A
- F RICIRCULATION I
0 3
RHR (Shutdown) HX L'A 26.O x10 Cooling Vater Temp 95
~'F i
FIGURE O RECIRCULATION PHASE Nc' Singw fsa.uw loa wan p
h va Sasu 1.7
L l*
TABLE 1 SPILL FLOWRATE TIME O = END OF BLOWDOWN TIME SPILL FLOW 3
(sec)
(ft /sec) 0 0
4
.73 65
~
5.83 104 FROM ACCUMULATOR 16.7 85 31 0
46
.261 62 1.461 79.25 2.939 97.23 4.349 116.44 5.736 137.08 7.114 2
159.49 8.502 184,12 9.9 l
CONSTANT AFTER 184.12 sec t
'l.8