ML20235W189
| ML20235W189 | |
| Person / Time | |
|---|---|
| Site: | Beaver Valley |
| Issue date: | 07/15/1987 |
| From: | Tam P Office of Nuclear Reactor Regulation |
| To: | Sieber J DUQUESNE LIGHT CO. |
| References | |
| NUDOCS 8707230484 | |
| Download: ML20235W189 (4) | |
Text
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July 15,1987 O
r-icket No. 50-334 Distribution:
Docket File NRC & L PDRs Branch Files ACRS (10)
SVarga BBoger JPartlow Mr.' J. D. Sieber, Vice President EJordan PTam Nuclear Operations OGC-Bethesda SNorris Duquesne Light Company Glainas RWright Post Office Box 4 Shippingport, PA 15077
Dear Mr. Sieber:
SUBJECT:
BEAVER VALLEY UNIT 1 - WATER CHEMISTRY SURVEY As a result of the Surry pipe erosion / corrosion incident in December of 1986, the NRC is preparing a report that will reference existing research information available and describe the actions being taken by utilities regarding erosion /
corrosion in feedwater pipes in nuclear power plants. Central to an understand-ing of erosion / corrosion in pipes is an accurate assessment of erosion / corrosion experience, piping design, feedwater and condensate chemistry and piping materials.
To ensure that both the NRC and the nuclear industry have available a comprehensive collection of data regarding erosion / corrosion in feedwater pipes, the NRC will assemble a summary of utility information related to ongoing water chemistry actions in pressurized water reactors. To accomplish this task we ask that you complete the enclosed questionnaire.
The information being requested is quite extensive and will require a diligent effort on your part and ours to assure accurate and timely completion. Also, we realize that parts of the information may already be available to the NRC, but not in a convenient format which is readily accessible. Therefore, we requast that you assist us by returning a single completed copy of the enclosed questionnaire within 60 days of receipt of this letter. We believe the questionnaire is self explanatory; however, if questions arise or clarification is required, please contact me.
This request is covered by Office of Management and Budget (OMB) Clearance Number 3150-0011 which expires December 31, 1989. Comments on burden and duplication may be directed to the Office of Management and Budget, Room 3208 New Executive Office Building, Washington, D. C.
20503.
Sincerely,
/S/
B7072304B4 870715 Peter S. Tam, Project Manager PDR ADOCK 05000334 Project Directorate I-4 P
PDR Division of Reactor Projects I/II
Enclosure:
PWR Erosion-Corrosion Questionnaire cc w/ enclosure:
See ne t, pa ge P0 PDI-4 PD l
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J Mr. J. D. Sieber Beaver Valley 1 Power Station Duquesne Light Company cc:
Mr. W. S. Lacey Pennsylvania Power Company Station Superintendent James R. Edgerly Duquesne Light Company Post Office Box 891 Daaver Valley Power Station New Castle, Pennsylvania 16103 Post Office Box 4 Shippingport, Pennsylvania 15007 Mr. Jess T. Shumate, Commissioner State of West Virginia Department Mr. S. Sovick, Acting Supervisor of Labor of Licensing 1800 W6shington Street, East Duquesne Light Company Charleston, West Virginia 25305 Post Office Box 4 Shippingport, Pennsylvania 15077 David K. Heydinger, M.D.
State Director of Health Mr. John A. Levin State Department of Health Public Utility Commission 1800 Washington Street, East Post Office Box 3265 Charleston, West Virginia 25305 Harrisburg, Pennsylvania 17120 Regional Administrator, Region I Gerald Charnoff, Esquire U.S. Nuclear Regulatory Commission Jay E. Silberg, Esquire 631 Park Avenue Shaw, Pittman, Potts and Trowbridge King of Prussia, Pennsylvania 19406 2300 N Street, N.W.
Washington, DC 20037 Mr. R. Janati Bureau of Radiation Protection Charles E. Thomas, Esquire Pennysivania Department of Thomas and Thomas Environmental Resources 212 Locust Street P.O. Box 2063 Box 999 Harrisburg, Pennsylvania 17120 Harrisburg, Pennsylvania 17108 John D. Burrows, P.E.
Marvin Fein Director of Utilities Utility Counsel State of Ohio City of Pittsburgh Public Utilities Commission 313 City-County Building 180 East Broad Street Pittsburg, Pennsylvania 15219 Columbus, Ohio 43266-0573 Resident Inspector Pennsylvania Office of Consumer U.S. Nuclear Regulatory Commission Advocate Post Office Box 298 ATTN: Michael Bardee Shippingport, Pennsylvania 15077 1425 Strawberry Square Harrisburg, Pennsylvania 17120
4 a.
s PWR EROSION-CORROSION QUESTIONNAIRE (Check or Circle All Applicable)
Utility Company: Duquet.ne Light Company Unit Name:jleaver Valley _j MWe
- filled by:
Date:
Phune No.
In service: 19....
Water Treatment:
AVT with ammonia, morpholine. hydrazine.
Condensate polishers: none, cation. powdex. mixed bed;
.....% of feedwater flow; installed 19....; operated la: H-OH NH4-OH for:n.
Cooling water: fresh, salt, brackish. cooling tower.
Copper alloy condenser tubing:
yes, no. Copper alloy FW heater tubes:
Boric acid used since: 19...; during: operation, layup, low load soaks other.......
A.
EROSION-CORROSION EXPERIENCE I.
Erosion-Corrosion identified in wet steam piping:
yes, no.
2.
Erosion-Corrosion of MSR Chevrons or mesh:
yes, no.
Chevron material:
stainless steel, carbon steel, other.....................
3.
E oston-Corrosion of feedweter piping: yes, no.
Date found...................
Feedwater piping materials:
4.
Erosion-Corrosion of:..... e l bows,..... T s...... d if fusers....... : reducers.
.... valves..... orifices..... other components (specify)..................
5.
Erosion-Corrosion of J-Tubes:
yes, no.
6.
Erosion-Corrosion of feedwater distribution ring: yes, no.
7.
Erosion-Corrosion of turbine:
8.
Erosion-Corrosion of other cycle components (identify)...................... 6*
9.
Feedwater temperature range where erosion-corrosion found: from.... to..... f 10.
Inspection frequency for feedwater piping..... years. Steam lines..... years.
II, Inspection methods used: ultrasonic thickness radiography, visual, other......
B.
PIPING DESIGN
~
1.
Maximum feedweter flow velocity............ feet /second.
2.
No. of feed pumps operating at 100% load........ second pump On at
.....% load.
3.
Maximum flow velocity when only 1 pump is operating............... feet /second.
4.
No. of feedwater piping components:....... e l bows....... Ts....... d i f fuser s.
reducers....... valves....... orifices.
...... Other components (specify)
S.
Maximum flow velocity in wet steam piping............ feet /second.
6.
Feedwater pressures and temperatures (agtual (preferred) or design):
Full load (pressure, psla/ temperature.
f):
P:
P:
P:
P:
P:
T:
T:
T:
T:
T:
r-Q g
y4
- l 9 4
y Condensate Pump Cond. Polishers BF Pump Steam Generators O
low load (typical
...% of full load):
P:
P:
P:
P:
Pr.....
T T:
T:
T:
T:
U Q
U v
y V
y m
y CondTnsate Pump Cond. Polishers BF Pump Steam Generators Please attach copies of the heat balance diagrams for your actual full load and typical low load. - - - _ _ - _ _ - _ _ _ _ _ _ _ _ _ _ _ - _ _ _ _ _ _ _ _ _ _ - _ _ -
J
.a C.
FEE 0 WATER AND CONDENSATE CHEMISTRY
- 1. -
Please complete the attached Table.
2.
Feedwater chemistry history (average or typical values, final feedwater):
Year of oper.:
1st 1974 1976 1978 1980 1982 1983 1985 1986 1987 pH of FW maximum.
minimum.
average.
pH of condensate maximum.
minimum.
average.
- 00. ppb maximum.
minimum.
average.
Cat. Cond. uS/cm.
Spec. Cond. uS/cm.
NH, ppb Nh. ppb y
85ron, ppb Air inleakage.
SCFM Please send any water chemistry summary reports and data.
3.
Chemical additions
3.1 Ammonia
typical concentration in feedwater.... ppb; added at...........
l
3.2 Hydrazine
typical concentrat ion in feedwater.... ppb; added at.........
3.3 Boric acid:
typical concentration in feedwater.... ppb as B; l
added at..................
l 0.
-MATERIALS l.
Feedwater piping - list ASTM or other specification numbers....................
l l
2.
Wet steam piping:
3.
Attach results of chemical analysis by you or pipe vendors.
70/ Doc 4