ML19319B504
| ML19319B504 | |
| Person / Time | |
|---|---|
| Site: | Davis Besse  |
| Issue date: | 05/19/1978 |
| From: | Roe L TOLEDO EDISON CO. |
| To: | Stolz J Office of Nuclear Reactor Regulation |
| References | |
| NUDOCS 8001230628 | |
| Download: ML19319B504 (6) | |
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TOLEDO
%ms EDISON LOWELL E. ACE Docket Sc. 50-346 ll',7lll',",'m,,,,,
.csi rse sna Operating License No. NPF-3 Serial No. 437 May 19, 1978 Director of Nucient Reactor Regulation Attn:
Mr. John F. Stolz, Chief Light Water Reactors Branch No. 1 Division of Project Management United States Nuclear Regulatory Concission Washington, D. C.
20555
Dear 'tr. Stolz:
As requested in your letter dated March 15, 1978, concerning the Davis-Besse Nuclear Power Station Unit I steam generators, enclosed is the questionnaire including the appropriate h1 formation. Since there have been no in-service inspections to date on the Davis-Besse Unit I steam generators, Sections VII, VIII, IX and X are not applicable and have not been included.
Very Ltuly yours, Enclosure bt b/2 a e a>\\i uV wh$i [
r.a 781450269 k\\
%? 9p THE TCLEDO EDISCN COMPANY EDISCN PLAZA 300 MACISCN AVENUE TOLEDO. OHIO IGE 52 l
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.g Docket No. 50-346 ENCLOSURE 1 Operating License-STEAM GENERATOR OPEPATING NPF-3 Serial No.437 HISTORY QUESTIONNAIRE May 19, 1978 n;p.g s
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p NOTE: All percentages should be reported to four significant figures.
I.
BASIC PLANT INFORMATION Plant:
Davis-Besse Nuclear Power Station Unit No.1 mm...
Startup Date:
August, 1977 5,.,
Co^1-
Utility:
Toledo Edison Company Plant Location:
Oak Harbor, Ohio Thermal Power Level:
2772 MW Nuclear Steam Supply System (NSSS) Suoplier:
Babcock & Wilcox company Number of Loops:
2
,,. _,p O
Steam Generator Suonn er, Moeel No. end Type.
8abceck & witcex ce.,
Once Through Steam Generator
.A Number of Tubes Per Generator:
15,457 Tube Size and Material:
0.625 in., Inconel II.
STEAM GENERATOR OPERATING CCNDITIONS Normal Operation Inlee outlet Temperature: Primary 608"F 556yF p,
Secondary 470 F 570 F
- c 1b/hr* Allowable Leakage Rate
Primary - Igpm W
Flow Rate: Primary - 74.45x106 Primary rressure:
2200 psia (inlet)
Secondary Pressure: 925 psia (outlet)
Accidents
't Design Base LOCA Max. Delta-P:
925 psi 7
Main Steam Line Break (MSLB) Max. Delta-P:
2200 psi III.
STEAM GENERATOR SUPPORT PLATE INFORMATICN Material:
SA 515, Gr.70 Er ached Plate Design Type-Design Code:
ASME Section III,1968 used as a guide 15/
I Dimensions:
117 32 32 in, 1\\ in. plate Flow Rate:
6.12x106 lb./ r.
Q h
Tube Hole Dimensions:
Broached Holes
.320" sinimum drill radius
.875" !
.010", tube pitch Flow Hole Dimensions:
N/A
.430" max rad.i broached hole
.427" min rad.J.
- Based upon heat balance at 907. rated power.
DB-1 b
M
- DI N7"@2~.F.~M-
' QN.c-W%(kkYkhTMQ YYEYg["^M@42.*.'.~N'%.~':s'-:.= 9:j 2 W #:Co K K W.9.2.': @ @. C XV"
g 1Y.
STEAM GENERATOR BLOWDC INFCRMATION 0 (Once Through Steam Generator)
Frequency of Blowdewn:
Nomal B1cwdewn Rate:
0 Blowdown Rate w/ Condenser Leakage:
0
_y' Chemical Analysis Results N/A
'h Results Parameter Control Limits PY
.[e -O g
7..
V.
WATER CHEMISTRY INFORItATICN
)
syv
.y' Secondary Water Type of Treatment and Effective Full Power (EFP) Months of C% ration:
AVT
- Typical Chemistry or Impurity Limits:
See Next Page feedwater
.G.&,.
Typical Chemistry or Impurity Limits:
Q:.'
See Next Page Condenser Cooling Water Typical Chemistry or Impurity Limits:
Langelier Saturation Index - 0.2-0.0 Free Chlorine 0.05 - 0.3 4
6.s' Demineralizers - Type:
None Cooling Tower (open cycle, closed cycle or none):
- The reactor has operated about 3 EFPM. The Steam Generators have been operated for these 3 EFPM plus some additional time (which is not readily available) for Startup testing.
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DB - 1 SOND h' Y -N' S-50 M M-rs.M M S-N ;c M W # v&s,.W]W w.Y Y~~D R & NIdC TI-R & &'Q.1,? '
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. Steam Generator Water Condition: ( 157. Full Power
- Analysis Specification Chloride 1.0 ppm max as Cl-Sodium 2.0 ppm max as Na+
Cation 10.0 pmho/cm max j
Conductivity Silica 2.0 ppm max pH @ 77 F NA
- NUIE: SG water is not sampled above 157. power.
Steam Generator Steam Condition: Operating Analysis Specification pH @ 77 F 9.3 - 9.5 Cation
.5 umho/cm max Conductivity Steam Generator Feedwater Condition:
Operation Analysis Specification pH @ 77 F 9.3 - 9.5 Cation
.5 umho/cm max Conductivity Hydrazine 20 - 100 ppb Conductivity 5.2 - 8.4 umho/cm Dissolved 02 7 ppb max Total Silica 20 ppb max Total Iron 10 ppb max Total Copper 2 ppb max Total Solids 50 ppb max DB - 1
4
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. V VI. TUR5!fiE~ STOP VALVE TESTItG (applicable to Babcock & Wilcox (B&W) 5.G. only)'
Frecuency of Testing Actual:
Daily when operating below 65*2 -full nower Monthly when operating above 85,/. full power 4
Manufacturer Recornnendation:
Daily
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&f Power Level At 'ahich Testing is Conducted W.
Actual:
Operating Pressure, but not greater than 657. full power Manuf acturer Recer:Tnendation:
Any Power Level Testing Procedures (Stroke length, stroke rate, etc.)
Actual:
Full Stroke
- h" Manufacturer Recorn=endation:
Full Stroke g.;.
1 s
t n
e 4
4 a
e e
5 DB - 1 i
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