ML19210A575
| ML19210A575 | |
| Person / Time | |
|---|---|
| Site: | Crane  |
| Issue date: | 02/13/1978 |
| From: | Herbein J METROPOLITAN EDISON CO. |
| To: | Office of Nuclear Reactor Regulation |
| References | |
| GQLL-0200, GQLL-200, NUDOCS 7910300613 | |
| Download: ML19210A575 (11) | |
Text
.
REGULATORY INFORMATION DISTRIBUTION S/ STEM (RIDS)
"ISTRIBUTION FOR INCOMING MATERIAL 50-289 REC:
GRG: HEREEIN J G DOCDATE: 02/13/78 NRC METROPOL EDISON DATE RCVD: 02/16/7?
DOCTYPE: LETTER NOTARIZED: NO
SUBJECT:
COPIES RECEIVED LTR 1 ENCL 1 FORWARDING COMFLETED QUETIONNAIRE CONCERNING STEAM GENERATOR OPERATING HISTORY.
PLANT NAME: THREE MILE ISLAND - UNIT 1 REVIEWER INITIAL:
XJM DISTRIBUTOR INITIAL:
- DISTRIBUTION OF THIS MATERIAL IS AS FOLLOWS *+****************
RELIABILITY OF STANDGY DIESEL GENERATOR UNITS.
(DISTRIBUTION CODE A014)
FOR ACTION:
BRANCH CHIEF REID**W/3 ENCL INTERNAL:
O FG F I L.E NRC PDR**W/ ENCL Int **W/2 ENCL OELD**W/ ENCL HANAUER**W/ ENCL F ROSA +*W/ ENCL F CLEMENSON**W/ ENCL DIS SER BR-MC**W/ ENCL EXTERNAL:
LPDR'S HARRISBURG, PA**W/ ENCL TIC **W/ ENCL NSIC**W/ ENCL ACRS CAT B**W/10 ENCL 1491
.518 DISTRIGUTION:
LTR 25 ENCL 25 CONTROL NER:
7h0460249 SIZE: 1P+9P
+++++++++++++++*********++*********
THE END
+++++++***+*********4*************~
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METROPOLI FAN EDISON COMPANY POST OFFICE BOX 542 RE ADING. PENNSYLVANI A 19003 TELEPHONE 215 - 929-3601 February 23, 1973 GQL 0200
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Director of Nuclear Reactor Regulatf.cns
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U. S. Nuclear Regulatory Cenmissier
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Washington, D. C.
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Dear Sir:
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Three Mile Island Nuclear Station, Unit II (CG-2)
Operating License No. DPR-50 Docket No. 50-289 Enclosed please find our conpleted questionnaire concerning steam generaer operating history.
Should you have any questions cencerning this respense, please contact R. O. Earley at Three Mile Island Nuclear Statien.
c'ncerely,
/
. G. Herbein Vice President-Generation JGH:DGM:cj g Enclosure 1491 319 780480249 Aely S M
///
E'ICLCSURE 1 STEAM GE'IERATOR OPERATI:iG HISTORY QUESTION:iAIRE NOTE: All percentages should be roported to four significant figcres.
I.
3ASIC PLANT I:lFORMATION Plant:
" tree Mile Island - Unit 1 Startup Date:
2 September 197h Utility:
Metropolitan Edison Cc=pany Plant Location:
Middletown, Pennsylvania Thermal Power Level:
2535 E Nuclear Steam Supply System (NSSS) Supplier:
Babecek & Wilcox Co.
Number of Loops:
2 Steam Generator Supplier, Model No. and Type:
B&W, N/A, OTSG Tube Si::e and Material:
0.625" 0.D./0.034" vall/56' 2 3/8"/Incenel Number of Tubes Per Generator:
15,531 II.
STEAM GE'iERATOR OPERATING CONDITICNS Normal Oteration Prim.
Sec.
Te=perature:
602.8 F/570 F 6
Flow Rage:
65.6 x 10
/5.3 x 10 A11cvable Leakage Rate: I131<1 pCi/cc Primary Pressure:
2200 psia Secondary Pressure:
925 psia Accidents Design Base LCCA Max. Delta-P:
925 psia Main Steam Line Break (MSLB) Max. Delta-P: 2200 psia III.
STEAM GENERATOR SUPPORT PLATE I'TFCRMATION Material:
Carbon Steel Design Type:
Broached Cpening Design Ccde:
SA-212-3 Dimensions:
L.3 3/8" Diameter 6
Flev Rate:
5.3 x 10
?1be Hole Dimensicns: 20.320 in. min. radius / tube Flev Hole Dimensions: 20.135 sq. in./ tube 1491
.420 IV.
STEAM GE'IERATOR BLOWDt '4N INFORMATICN Frequency of 310wdown-Not Required Normal 31cvdown Rate:
NA 31cvdown Rate v/ Condenser Leakage: NA Chemical Analysis Results NA Results Parameter Control Limits NA NA V.
WATER CHEMISTRY INFOPl4ATION Secondary Water Type of Treatment and Effective Full Power (EFPl Months of Operation:
A=monia and Hydrazine added to feed water - Powdex polishing 32 EFFM Typical Chemistry or Impurity Limits:
Anmonia 2-20 ppm Hydrazine
>50 ppm Catalyzed Hydrazine >25 ppm pH 9770F 9.5-10.5 Cation Conductivity <10 the Na
<l.0 ppm Cl-
<1.0 ppm Feedvater Typical Chemistry or Impurity Itaits:
pH 977 F 9.3-9.5 Max Solids
<50 ppb Cation Conductivity <5 Unho Max. O, 7
ppb Max Si"0 20 ppb 2
Max. Fe 10 ppb Max. Cu 2
ppb Condenser Cooline Water
?ypical Chemistry or Impurity Limits:
- 1. Ccncentration centrolled to 2-3x river water solids concentration by blovdcvn
- 2. Maintain 0-0 5 L'Angelier Index by adding sulfuric acid
- 3. Chlcrination 0.h ppm free Cl by adding for threa 15-minute periods per day during vars =onths only Demineralizers - Type: None Cooling Tower (open cycle, closed cycle er ncne):
Closed Cycle 1491 T21
. VI.
TURBINE STOP VALVE TESTING (applicable to Babecek & Wilcox (B&W) 9.G. only)
Frecuency of Testing Actual:
1 per month Manufacturer Reccc=endaticn:
1 per day Power Level At Which Testing is Conducted Actual:
50%
Manufacturer:
Not specified Testing Procedure (Strcke leneth, stroke rate, etc.)
Actual:
100% stroke 9 <1 min. full open to full close Manufceturer Reccc=endation: Not specified VII. STEAM GENERATOR TUBE DEGRADATION HISTORY (The following is to be repeated for each scheduled ISI)
Inservice Inspection (ISI) Date:
3/76 3/77 Number of EFP Days of Operation Since Last Inspection:
Baseline 257 (The following is to be repeated for each steam generater)
Note: There were h67 EFFD as of the 3/76 inspection.
Steam Generator Number:
A B A
B Percentage of Tubes Inspected at This ISI:
3% 3%
6.3%
3.2%
Percentage of Tubes Inspected at This ISI That Had Been Inspected at the Previous Scheduled ISI:
3%
0.85 Number of Tubes Plugged Prior to This ISI:
2 3 2
3 Number of Tubes Plugged at This ISI:
0 0 2
6 Percentage of Tubes Plugged That Did Not Exceed De-gradation Limits:
50%
0 Percentage of Tubes Plugged as a Result of Exceedance of Degradation Limits:
50%
1005 Sludge Layer Material Chemical Analysis Results:
Not applicable Sludge Lancing (date):
NA Ave. Height of Sludge Before Lancing:
NA Ave. Height of Sludge After Lancing:
NA Replacement, Retubing or Other Remedial Action Jonsidered:
Briefly Specify Details NA NA Support Plate Hourglassing:
NA Support Plate Islanding:
Tube Metalurgical Exam Results:
NA 1491 322
Fretting or Vibration in U-Bend Area (not applicable to B&W S.G.) AS OF (4)
- IA Other Preventive Measures Percentage of Tubes Plugged NA Wastace/ Cavitation Erosion AS OF (4)
(Repect this infor::aticn for the cold leg on Combustion Engineering Hot Leg:
(C.E.) and Westinghouse (W) 5.G.)
a b
c d ie ng Area of Tube Bundle (1)
% of Tubes Affected by Wastage / Cavitation Erosion noT LePLI :ABLE
% of Tubes Plugged Due to Exceedance of Allowable Limit (2)
% of Tubes Plugged That Did not Exceed Degradation Limit Location Above Tube Sheet (3)
Max. Wastage / Cavitation Erosion Rate for Any Single Tube (Tube Circum. Ave) (Mills / Month)
Max. Wastage / Cavitation Erosion in Any Single Unplugged Tube (Tube Circum. Ave) (Mills)
Cracking AS OF (4)
Caustic Stress Corrosion Induced in C.E. and 1 S.G.
Flow Induced Vibration Caused in B&W S.G.
NA Q}
5_
Crackin9 (Cen't) vepeat this infomation for the colc leg on C.E. and E S.G.)
- TA F0t Leg:
II)
Area of Tube Bundle a
b c,
d e
% of Tubes Affected noT APPL:cA3LI By Cracking k of Tubes Plugged Due to Cracking i of Tubes Plugged That Did Not Exceed Degradation Limit Location Above (3)
Tube Sheet Rate of Leakage From Leaking Cracks (gpm)
Denting (Not applicable to B&W S.G.) AS OF (4) nA (Repeat this information for the cold leg on C.E. and 1 S.G.)
Hot Leg:
Area or Tuce Bundle (1) a b
c d
e NCT.JPLIr Antz
% of Tubes Affected by Denting l
% of, Tubes Plugged Due to Exceedance of Allowable Limit (2)
% of Tubes Plugged That Did Not Exceed Degradation Limit Rate of Leakage From Leaking Dents (gpm)
Max. Denting Rate for Any Single Tube (Tube Circum. Ave) (Mills / Month)
Max. Denting in Any Single Unplugged Tube (Tube Circum. Ave) (Mills)' -
1491 324 Denting (Con't) n Support Max. Denting in Any Single
" of Tubes Affected By Plate Tube in Bundle Aree Denting in Bundle Levels (Tube Ave) (Mills) (1)
Area a
b c
d e
a b
c d
e ITOT R?LIC.GLE 1
2 3
l 4_
5 6
i 7
l l
I I
a.-
10 i
11 12 l
l 1491 325
7-TABLE KEY NOTE: All percentages refer to the percent of the tubes within a given area of the tube bundle.
(1)
Area of the Tube Bundle No. of Tubes Within the Area a.
Periphery of Bundle
~6870 (wi/20 rows for B&W; wi/10 rows for C.E. and W) b.
Patch Plate NA (wi/4 rows)
Missing Tube Lane (B&W only)
~770 (including 200 from part A) c.
(wi/5 rows, Flow Slot h eas (C.E. and W only)
NA c.
wi/10 rows d.
Wedge Regions (C.E. and W only)
NA (wi/8 rows) e.
Interior of Bundle
~8090 (remainder of tubes)
(2)
Allowable Limit for Wastage / Cavitation Erosion: ho%
Allowable Limit For Denting:
Not Applicable (3) 1.
Specifies area between the tube sheet and the first support plate 2.
Specifies in the following locations: (list the additional locations)
Wastage / Cavitation Erosion:
NA Cracking.
NA (4)
Specify the date of the inspection for which results have been tabulated.
1491 326 VIII. SIO:IIFICA!iT STEAM GE:iERATOR AB:IORMAL CPERATIC:iAL EVE:iTS DATE SUIC!ARY (Include event description; unscheduled ISI results; if per-formed; and subsequent remedial actions)
Date Event 03G 1.
HFT*
11 cycles on EF no::les A&B 2.
12/76 1 hr. @ 500 F vith FW<90 F A&B 3.
12/76 hr. @ 520 F vith FW<90 F A
h.
11/77 6h hr. @ 532 F vith FW<90 F A&B 5
10/77 3.6 pH for about 3 hours3.472222e-5 days <br />8.333333e-4 hours <br />4.960317e-6 weeks <br />1.1415e-6 months <br /> (secondary)
A&B 6.
HFT OTSG Leve1<97% RC>300 F numerous cycles A&B IX.
CO:iDENSER I:IFCRMATIO!I Condenser Tube Leakage Detectable Detection Method Material Date Rate (gpm) timit 30h SS HFT*
160 gpm 0.1-0.2 gpm Cat. Cond.: High 6-9/76 0.h-1.5 0.1-0.2 gym Sodium: High Powdex Perfor=ance X.
RADIATIC?! EXPOSURE HISTORY WITH RESPECT TO STEAM GE'TEPATORS Date Exam Dosage (Man-Rem)
Repa r Dosage (Man-Rem)
Cor:ments 76 Data not available NA 77 12.83h 1%n-Rem 9.h67 Man-Rem
- HF"' = Hot Functional Testing Period lkhl
$}[
9 XI. DEGRADATION HISTORY FOR EACH TYPE OF DEGRADATION EXPERIENCED FOR TEN REPRESENTATIVE, UNPLUGGED TUBES FOR WHICH THE RESULTS OF TWO OR MORE ISI'S ARE AVAILABLE If the results for ten tubes are not available, specify this infor-mation for all those tubes for which results are available.
NA (repeat the following information for each tube and degradation type)
Steam Generator No:
Tube Identification: NOT APPLICABLE Type of Degradation:
(specify denting, wastage, cavitation erosien, caustic stress corrosion cracking, or flow induced vibration cracking)
(repeat the following information chronologically for each ISI for which results are available)
ISI Date:
Amount of Degradation:
(specify amount and units)
EFP Months of Operation Since Last ISI for Which Results are Given:
1491 328